CN100574727C - The carbonaceous femoral head prosthesis of enchased with metal liner - Google Patents
The carbonaceous femoral head prosthesis of enchased with metal liner Download PDFInfo
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- CN100574727C CN100574727C CN200710169967A CN200710169967A CN100574727C CN 100574727 C CN100574727 C CN 100574727C CN 200710169967 A CN200710169967 A CN 200710169967A CN 200710169967 A CN200710169967 A CN 200710169967A CN 100574727 C CN100574727 C CN 100574727C
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Abstract
The carbonaceous femoral head prosthesis of enchased with metal liner is made of carbonaceous femoral head, is characterized in being fixedly connected with inner metal sleeve in the holddown groove of carbonaceous femoral head.The present invention can make the carbonaceous femoral head of different size all can be used with general prosthese handle, has reduced operating difficulty, has avoided the error that anthropic factor caused, and operating time obviously shortens, and can make carbonaceous femoral head popularize widely and use.The quality of fit height of inner metal sleeve and prosthese handle, the mechanical strength height, the energy stable for extended periods of time is indeformable, has improved the stability of prosthese in medullary cavity, and anti-pressure ability improves more than 1 times than existing prosthese.The present invention had both made things convenient for orthopedist's operation technique, and the prosthese handle of the different size of various biotypes that carbonaceous femoral head can adapt with individual patients and abiotic type is complementary, and had realized that the long-term personalization of thirsting for of medical personnel selects.Have practical value, will produce good social benefit and economic benefit after applying.
Description
Technical field
The present invention relates to the improvement of carbonaceous femoral head prosthesis, is a kind of carbonaceous femoral head prosthesis of enchased with metal liner specifically, belongs to the pseudocolloid in the medical domain.
Background technology
Carbon-titanium combination type is gone into worker's femoral head (ZL99126815.6,91233139.9), because of its carbonaceous femoral head has light weight, wear-resisting, withstand voltage, corrosion-resistant, advantages such as mechanical strength is high, long service life, has been widely used in clinical.But, the doctor will select suitable carbonaceous femoral head according to different patients' concrete condition in clinical operation, and according to patient's medullary cavity, match only several titanium prosthese handle that can be complementary with it, again carbonaceous femoral head and titanium prosthese handle are adhesively fixed with bone cement, become as a whole postposition to go in the medullary cavity.The operation process more complicated has necessarily required certain empirical specialist to get rid of various anthropic factors, makes carbonaceous femoral head and titanium prosthese handle accurate location and installation when bonding, could obtain ideal surgical effect.And only several titanium prosthese handle, far can not satisfy numerous patients' individual variation, the prosthese after inserting is swung in medullary cavity, cause thigh pain etc.
Summary of the invention
The objective of the invention is at above-mentioned deficiency, a kind of simple in structure, carbonaceous femoral head prosthesis that can be complementary, simplify the enchased with metal liner of operating difficulty with the prosthese handle of various models is provided.
The technical scheme that realizes the object of the invention is:
The carbonaceous femoral head prosthesis of this enchased with metal liner is made of carbonaceous femoral head, is characterized in being fixedly connected with inner metal sleeve in the holddown groove of carbonaceous femoral head.
Described inner metal sleeve is made of the cover of columnar body and blind end top, is provided with annular cover eaves at the outward flange of inner metal sleeve.
Can adopt adhesive such as medical bone cement to be connected between the holddown groove of carbonaceous femoral head and the inner metal sleeve, in order when being adhesively fixed, to get rid of gas and excessive binding agents such as medical bone cement, and connect accurate positioning, on annular cover eaves, have steam vent; Be provided with the annular positioning sleeve of fixedlying connected in annular cover eaves inboard with the junction of holddown groove with inner metal sleeve.
For the holddown groove of strengthening carbonaceous femoral head and the bonding strength of inner metal sleeve, also can adopt screw thread to fixedly connected between the holddown groove of carbonaceous femoral head and the inner metal sleeve.At this moment, the junction between carbonaceous femoral head holddown groove and inner metal sleeve is respectively equipped with intermeshing screw thread.
In order further to strengthen the holddown groove of carbonaceous femoral head and the bonding strength of inner metal sleeve, prevent the inner metal sleeve turn, on annular cover eaves, also be provided with the anti-hole of revolving, have the anti-hole of revolving on the anti-carbonaceous femoral head that revolves the hole correspondence, revolve the hole and anti-revolving is equipped with the anti-pin that revolves in the hole anti-.
In order to cushion the longitudinal impact force of human body, between annular cover eaves and carbonaceous femoral head, also buffering spacer can be housed to carbonaceous femoral head.
Inner metal sleeve cooperates accurately with general prosthesis handle button, stablizes in order to make, non-loosening, external diameter, length and the tapering of the internal diameter of described inner metal sleeve, the degree of depth and tapering and the general prosthesis handle button coupling that matches.
The carbonaceous femoral head prosthesis of enchased with metal liner of the present invention, simple in structure, the carbonaceous femoral head of different size all can be inlayed the inner metal sleeve of same inner diameter, the degree of depth and tapering, make the use that all can match of the carbonaceous femoral head of different size, make the adaptability of carbonaceous femoral head more extensive with general prosthese handle.Need only the carbonaceous femoral head prosthesis of selecting with the akin enchased with metal liner of patient's human femoral head size in the operation, and the general prosthesis handle that is complementary of selection and patient's medullary cavity, assign in the inner metal sleeve form a whole set of prosthese after, can insert in patient's medullary cavity and finish operation.Thereby greatly reduce the difficulty of operation, help carbonaceous femoral head and popularize more widely and use.Owing to the quality of fit of inner metal sleeve and general prosthesis handle button can be done very highly, and all the energy stable for extended periods of time is indeformable in operation and after the operation, and the comparable existing prosthese of its anti-pressure ability improves more than 1 times.The carbonaceous femoral head prosthesis of enchased with metal liner of the present invention had both made things convenient for orthopedist's operation technique, the general prosthesis handle of the different size of various biotypes that carbonaceous femoral head can adapt with individual patients and abiotic type is complementary, has satisfied the individuation requirement of patient prosthese.Have practical value, will produce good social benefit and economic benefit after applying.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the structural representation of inner metal sleeve among Fig. 1.
Fig. 3 is the left TV structure sketch map of Fig. 2.
Fig. 4 is an embodiment of the present invention and structural representation after the general prosthesis handle is connected.
Fig. 5 is the structural representation of the another kind of embodiment of the present invention.
Fig. 6 is the structural representation of carbonaceous femoral head among Fig. 5.
Fig. 7 is the structural representation of inner metal sleeve among Fig. 5.
Fig. 8 is the another kind of embodiment of the present invention and structural representation after the general prosthesis handle is connected.
Among the figure: 1 carbonaceous femoral head, 1-1 holddown groove, 2 inner metal sleeves, 3 steam vents, 4 bodies, 5 cover tops, 6 cover eaves, 7 positioning sleeves, 8 medical bone cements, 9 prosthese handles, 10 buttons, 11 anti-hole, 12 anti-hole, 13 anti-pin, 14 buffering spacers of revolving of revolving of revolving.
The specific embodiment
The present invention is further described with the embodiment that provides below in conjunction with accompanying drawing.But the present invention is not limited to embodiment, and those of ordinary skills do some modification, all in protection domain of the present invention.
Embodiment 1: the carbonaceous femoral head prosthesis that adopts the enchased with metal liner of bone cement connection
With reference to Fig. 1,2,3,4, the carbonaceous femoral head prosthesis of the enchased with metal liner that this employing bone cement connects is made of carbonaceous femoral head 1, is fixedly connected with inner metal sleeve 2 with medical bone cement 8 in the holddown groove 1-1 of carbonaceous femoral head.Inner metal sleeve is made of the cover of columnar body 4 and blind end top 5, is provided with annular cover eaves 6 at the outward flange of inner metal sleeve, has steam vent 3 on annular cover eaves; Inboard at annular cover eaves is provided with the annular positioning sleeve 7 of fixedlying connected with inner metal sleeve.External diameter, length and the tapering of the button 10 of the internal diameter of inner metal sleeve, the degree of depth and tapering and general prosthesis handle 9 coupling that matches.
The manufacture method of present embodiment is simple, a certain amount of medical bone cement of filling in the holddown groove of the carbonaceous femoral head of various models, treat that it solidifies in preceding (wire drawing phase) holddown groove with inner metal sleeve centre bit embedding carbonaceous femoral head, with medical bone cement fully contact treat that it solidifies after, carbonaceous femoral head is fixedlyed connected with inner metal sleeve be integral.When inner metal sleeve was fixedlyed connected with carbonaceous femoral head, the outside diameter d of annular positioning sleeve 7 played the axial location effect; Annular cover eaves 6 plays the longitudinal register effect; And utilize the steam vent 3 on the annular cover eaves to get rid of gas and excessive medical bone cement, therefore can make in the accurately firm holddown groove that is fixed on carbonaceous femoral head of inner metal sleeve.
Embodiment 2: the carbonaceous femoral head prosthesis that adopts the enchased with metal liner that is threaded
With reference to Fig. 5,6,7,8, the carbonaceous femoral head prosthesis of the enchased with metal liner that this employing is threaded is made of carbonaceous femoral head 1, adopts screw thread to be fixedly connected with inner metal sleeve 2 in the holddown groove 1-1 of carbonaceous femoral head.Inner metal sleeve is made of the cover top 5 of columnar body 4 and blind end, outward flange at inner metal sleeve is provided with annular cover eaves 6, on annular cover eaves, be provided with the anti-hole 11 of revolving, have the anti-hole 12 of revolving on the anti-carbonaceous femoral head that revolves the hole correspondence, with anti-revolving the anti-pin 13 that revolves is housed in the hole in the anti-hole of revolving, between annular cover eaves and carbonaceous femoral head, buffering spacer 14 is housed.External diameter, length and the tapering of the button 10 of the internal diameter of inner metal sleeve, the degree of depth and tapering and general prosthesis handle 9 coupling that matches.
The manufacture method of embodiment 2 is simpler, in the holddown groove of carbonaceous femoral head, utilize screw thread that inner metal sleeve directly is installed, after inner metal sleeve screws in the certain depth location, on the anti-carbonaceous femoral head that revolves the hole correspondence, leave the anti-hole of revolving, excessively cooperate then to be pressed into and prevent revolving pin, making also can't turn in the accurately firm holddown groove that is fixed on carbonaceous femoral head of inner metal sleeve.The carbonaceous femoral head prosthesis of the enchased with metal liner that this employing is threaded has been avoided having strengthened the mechanical performance of this carbonaceous femoral head prosthesis owing to the aging prosthetic loosening that causes of bone cement, has prolonged the service life of prosthese.Adding buffering spacer can also make human body that the longitudinal impact force of carbonaceous femoral head is cushioned.
Test example 1: the carbonaceous femoral head prosthesis of enchased with metal liner of the present invention and the capital clinical practice contrast test of first generation carbon-titanium combined type artificial
Beneficial effect for the carbonaceous femoral head prosthesis of examining or check enchased with metal liner of the present invention, the inventor in JIUYUE, 2005-2007 year JIUYUE two in the period of, utilize the carbonaceous femoral head prosthesis of the enchased with metal liner of first generation carbon-titanium combined type artificial femoral head and embodiments of the invention 1 or embodiment 2, done 72 routine carbonaceous femoral head replacements altogether, clinical practice and return visit are reported as follows.
1, first generation carbon-capital clinical practice of titanium combined type artificial and return visit report
Displacement first generation carbon-capital totally 25 examples of titanium combined type artificial (matched group), wherein left side 18 examples, right side 7 examples; Male's 20 examples, women's 5 examples; Oldest 88 years old, minimum are 55 years old; Fracture of the femoral head 17 examples, aseptic necrosis of femoral head 5 examples, proximal femur pathological fracture 3 examples.The tracking time is the longest 24 months, and is the shortest 3 months.Result of the test sees Table 1-3.
2, the clinical practice of the carbonaceous femoral head of enchased with metal liner of the present invention and return visit report
Replace totally 47 examples (test group) of the carbonaceous femoral head of enchased with metal liner of the present invention, wherein: left side 28 examples, right side 19 examples; Male's 29 examples, women's 18 examples; Oldest 85 years old, minimum 45 years old; Fracture of femoral neck 29 examples, aseptic necrosis of femoral head 12 examples, proximal femur pathological fracture 6 examples.The tracking time is the longest 36 months, and is the shortest 6 months.Result of the test sees Table 4-6.
The age distribution situation (example) of table 1, matched group case
The Harris scoring situation (example) that table 2, matched group patient follow up a case by regular visits to
A situation arises (example) for table 3, matched group patient complication
The sick Diagnosis that plants | Acetabular bone wearing and tearing Acetabular Wearing | Handle sinking Stem sinkafe | Ectopic ossification Acetabular ossifcation around the hip joint | Add up to |
1. fracture of femoral neck Femoral neek fracfure | 0 | 2 | 1 | 3 |
2. ischemic necrosis of femoral head Arascular necrosis of femoral head | 0 | 1 | 0 | 1 |
3. proximal femur pathologisch Bruch Pathologic fracture of upper end femur | 0 | 1 | 0 | 1 |
4 add up to Total | 0 | 4 | 1 | 5 |
The age distribution situation (example) of table 4, test group case
The Harris scoring situation (example) that table 5, test group patient follow up a case by regular visits to
Table 6, a situation arises for test group patient's complication (example)
The sick Diagnosis that plants | Acetabular bone wearing and tearing Acetabular Wearing | Handle sinking Stem sinkafe | Ectopic ossification Acetabular ossifcation around the hip joint | Add up to |
1. fracture of femoral neck Femoral neck fracfure | 0 | 0 | 1 | 1 |
2. ischemic necrosis of femoral head Arascular necrosis of femoral head | 0 | 0 | 0 | 0 |
3. proximal femur pathologisch Bruch Pathologic fracture of upper end femur | 0 | 1 | 1 | |
4 add up to Total | 0 | 1 | 2 | 3 |
Conclusion: show that through inner 72 routine carbonaceous femoral head replacement clinical comparison tests the carbonaceous femoral head prosthesis of enchased with metal liner of the present invention obviously is better than first generation carbon-titanium combined type artificial femoral head.
First generation carbon-titanium combined type artificial femoral head, the operation process complexity, need in the art at first to select and the akin artificial femur head of carbon of the former femoral head size of human body, after in the holddown groove of artificial femur head of carbon, putting into the bone cement of an amount of hot candied phase, again old-fashioned prosthese handle is embedded in the holddown groove, adjust the bone cement that cooperates excision unnecessary, treat just can insert human body after it solidifies.Operating time is long, generally needs about 1 hour 20 minutes, and is hemorrhage many, and life security is poor relatively.The prosthese initial stability is poor, and the thigh pain is often arranged, and has indivedual osteoporotic patients prosthese to occur and sinks, and influence function, can not early ground be movable down, could descend after generally wanting for 6 weeks activity, and range of motion is little.The experienced specialist of requirements of operation, and need to get rid of various artificial factors, it is adhesively fixed when accurately reaching the center, could prolong the service life of prosthese.Can only select old-fashioned prosthese handle, the range of choice is little, can not satisfy patient's individuation requirement.
Use the carbonaceous femoral head prosthesis of enchased with metal liner of the present invention, operation process is simple, need only the carbonaceous femoral head prosthesis of selecting with the akin enchased with metal liner of patient's femoral head size in the art, the prosthese handle that is complementary with carbonaceous femoral head prosthesis directly is installed, is vertically kowtowed to hit and make it embed human body to get final product.Simplified the difficulty of operation, avoided the error that anthropic factor caused, operating time obviously shortens, and reduces patient's bleeding generally about half an hour, shortens anesthesia duration, makes patient's life safer.The quality of fit height of inner metal sleeve and prosthese handle, the energy stable for extended periods of time is indeformable, has improved the stability of prosthese handle in medullary cavity, does not sink, having eliminated original prosthese, that the initial stage is installed is recurrent, because prosthese is swung caused thigh pain etc. in medullary cavity.Postoperative can be walked down ahead of time, can descend ground movable after general 2 weeks, and function of joint obviously improves.Improved the mechanical strength of prosthese, anti-pressure ability improves more than 1 times, has prolonged the service life of prosthese.Carbonaceous femoral head prosthesis of the present invention, can select various biotypes and the abiotic type general prosthesis handle that is complementary with it for use according to patient's concrete condition, make things convenient for the orthopedist to operate installation, fully satisfy the individuation requirement of patient, realized the long-term personalization selection of thirsting for of medical personnel prosthese.47 routine cases are far away through postoperative, return visit (the longest 3 years, the shortest half a year) in the recent period all obtains very ideal medical effect, are subjected to patient and medical personnel's favorable comment.
Test example 2: the carbonaceous femoral head prosthesis of enchased with metal liner of the present invention and the capital comprcssive strength contrast test of first generation carbon-titanium combined type artificial
Be carbonaceous femoral head prosthesis and the first generation carbon-capital comprcssive strength of titanium combined type artificial of examining or check enchased with metal liner of the present invention, the inventor is with the carbonaceous femoral head prosthesis of the enchased with metal liner of first generation carbon-titanium combined type artificial femoral head and embodiments of the invention 1 and embodiment 2, send national biological product check institute and carbon element factory, Jilin laboratory (national specialty), can make the comprcssive strength contrast test on the Material Testing Machine in the WE-30B type, result of the test sees Table 7.
Table 7, comprcssive strength comparative test result
The femoral head model | Diameter (millimeter) | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 |
Carbon-titanium combined type artificial femoral head | Comprcssive strength (kilogram) | 1738 | 2040 | 2328 | 2510 | 2830 | 3105 | 3270 | 3562 | 3891 | 4420 |
The carbonaceous femoral head prosthesis of the enchased with metal liner of |
Comprcssive strength (kilogram) | 2870 | 4138 | 4800 | 5214 | 5780 | More than 6000 | More than 6000 | More than 6000 | More than 6000 | More than 6000 |
The carbonaceous femoral head prosthesis of the enchased with metal liner of |
Comprcssive strength (kilogram) | 2650 | 3920 | 4570 | 4890 | 5300 | 5760 | More than 6000 | More than 6000 | More than 6000 | More than 6000 |
Illustrate: be the compression test limit more than 6000
Conclusion: show that through contrast test the comprcssive strength of the carbonaceous femoral head prosthesis of enchased with metal liner of the present invention obviously is better than first generation carbon-titanium combined type artificial femoral head.The comprcssive strength of the carbonaceous femoral head prosthesis of the enchased with metal liner of totally 5 kinds of models of femoral head diameter 48-56 millimeter has all surpassed the measuring limit of 6000 kilograms of compression tests.The carbonaceous femoral head prosthesis of enchased with metal liner of the present invention is described, except that having the distinctive light weight of carbonaceous femoral head, wear-resisting, corrosion-resistant, advantages such as mechanical strength is high, good biocompatibility, long service life, significantly improved comprcssive strength, its comprcssive strength mostly improves more than 1500 kilograms.
Claims (5)
1, a kind of carbonaceous femoral head prosthesis of enchased with metal liner, constitute by carbonaceous femoral head, the inner metal sleeve that the fixedly connected cover top by columnar body and blind end constitutes in the holddown groove of carbonaceous femoral head, the annular cover eaves that is provided with at the inner metal sleeve outward flange, it is characterized in that:
Adopt adhesive to be connected between the holddown groove of carbonaceous femoral head and the inner metal sleeve, on annular cover eaves, have steam vent, be provided with the annular positioning sleeve of fixedlying connected with the junction of holddown groove with inner metal sleeve in annular cover eaves inboard.
2, a kind of carbonaceous femoral head prosthesis of enchased with metal liner, constitute by carbonaceous femoral head, the inner metal sleeve that the fixedly connected cover top by columnar body and blind end constitutes in the holddown groove of carbonaceous femoral head, the annular cover eaves that is provided with at the inner metal sleeve outward flange, it is characterized in that:
Adopt screw thread to fixedly connected between the holddown groove of carbonaceous femoral head and the inner metal sleeve, on annular cover eaves, be provided with the anti-hole of revolving, have the anti-hole of revolving on the anti-carbonaceous femoral head that revolves the hole correspondence, revolve the hole and anti-revolving is equipped with the anti-pin that revolves in the hole anti-.
3, the carbonaceous femoral head prosthesis of enchased with metal liner according to claim 1 is characterized in that the binding agent of fixedlying connected between inner metal sleeve and the holddown groove is medical bone cement.
4, the carbonaceous femoral head prosthesis of enchased with metal liner according to claim 1 and 2 is characterized in that between the annular of inner metal sleeve cover eaves and carbonaceous femoral head buffering spacer being housed.
5, the carbonaceous femoral head prosthesis of enchased with metal liner according to claim 1 and 2, external diameter, length and the tapering that it is characterized in that internal diameter, the degree of depth and the tapering of inner metal sleeve and the general prosthesis handle button coupling that matches.
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CN200710169967A CN100574727C (en) | 2006-12-29 | 2007-11-09 | The carbonaceous femoral head prosthesis of enchased with metal liner |
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Application Number | Priority Date | Filing Date | Title |
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CN 200610170805 CN100998890A (en) | 2006-12-29 | 2006-12-29 | Carbon femur inlaid with metal endotheca |
CN200610170805.6 | 2006-12-29 | ||
CN200710169967A CN100574727C (en) | 2006-12-29 | 2007-11-09 | The carbonaceous femoral head prosthesis of enchased with metal liner |
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CN101172061A CN101172061A (en) | 2008-05-07 |
CN100574727C true CN100574727C (en) | 2009-12-30 |
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Families Citing this family (5)
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CN107595438B (en) | 2011-12-07 | 2020-12-08 | 史密夫和内修有限公司 | Orthopaedic implant augment |
US9814582B2 (en) * | 2011-12-07 | 2017-11-14 | Smith & Nephew, Inc. | Orthopedic augments having recessed pockets |
EP4245267A3 (en) * | 2015-07-09 | 2023-11-29 | Waldemar Link GmbH & Co. KG | Sleeve augment device for an articulated joint |
JP6574298B2 (en) | 2015-07-09 | 2019-09-11 | ヴァルデマール・リンク・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コムパニー・コマンディットゲゼルシャフトWaldemar Link GmbH & Co. KG | Reinforcement device for artificial knee joint, and system including the reinforcement device |
CN109009574A (en) * | 2018-09-07 | 2018-12-18 | 北京安颂科技有限公司 | A kind of femoral head prosthesis and hip prosthesis |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US4035848A (en) * | 1975-03-21 | 1977-07-19 | Heinz Wagner | Hip capitulum cap for a hip joint prosthesis |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US4035848A (en) * | 1975-03-21 | 1977-07-19 | Heinz Wagner | Hip capitulum cap for a hip joint prosthesis |
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