CN105250054A - Hip joint femoral stem with distributed bearing rivet - Google Patents
Hip joint femoral stem with distributed bearing rivet Download PDFInfo
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- CN105250054A CN105250054A CN201510585924.7A CN201510585924A CN105250054A CN 105250054 A CN105250054 A CN 105250054A CN 201510585924 A CN201510585924 A CN 201510585924A CN 105250054 A CN105250054 A CN 105250054A
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- holdfast
- carrying
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- femoral stem
- stem
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Abstract
A hip joint femoral stem with distributed bearing rivets belongs to the medical equipment and artificial hip joint replacement medical technical field, and comprises a femoral stem formed by a femoral stem neck and a femoral stem body; the femoral stem body comprises a body near end and a body far end, and is provided with a plurality of holes or slots; the bearing rivets are arranged and fixed in the holes or slots. The distributed bearing rivets with memory function can form sufficient jointing strength on interface body, thus effectively preventing femoral stem loosening, enhancing reliability, stability and long term anti-loosening ability of the hip joint femoral stem implanted and fixed in a femoral marrow cavity, and the femoral stem cannot damage the inner wall bone substance in the marrow cavity when being implanted in the human body marrow cavity; the femoral stem can provide clinic promotion values for further rejuvenation of joint replacement objects.
Description
Technical field
The invention belongs to medical apparatus and instruments and artificial hip joint replacing field of medical technology, be specifically related to a kind of femoral hip stem with distributed carrying holdfast.
Background technology
U.S.'s artificial hip joint replacing operation in the successful implementation sixties of 20th century, its successful Application is that the vast patient suffering from serious joint disease brings glad tidings, and makes them alleviate ailing and again obtain the ability of motion, achieves good curative effect.After this, artificial joint starts extensive use, and the quantity of prosthetic replacement's operation is that progression increases.From the seventies, artificial joint replacement is also popularity in Asia.Domesticly carry out hip replacement surgery gradually from the eighties in 20th century, be that vast Chinese patients with joint diseases solves ailing puzzlement, through groping and experience accumulation after a while, also achieve certain achievement.Although joint replacement is through effort for many years, clinical effectiveness improves greatly, but the bone that some problems Periprosthetic as postoperative in joint replacement infects, wear debris causes dissolves and causes the problems such as prosthetic loosening, dislocation, venous thrombosis pulmonary infarction still can not to be avoided completely, and then affect joint replacement effect, make the quantity every year causing prosthese to be fixed unsuccessfully needing to overhaul because of a variety of causes equally also in continuous increase.
Analyze and biomechanics Research according to up-to-date articular prosthesis failure statistics, aseptic loosening to cause in artificial hip joint replacing, at a specified future dately to lose efficacy and the first factor of overhauling, and in the Holonomic Mechanics fixed system formed at " prosthese-interface-host bone ", three parts forming this system all may become the problem aspect loosening and lost efficacy, and (1) interface itself does not form the enough combinations of intensity.Now, clinically can find that joint heavy wear does not occur, but prosthese loosening, is the early stage dominant mechanism loosened; (2) stress shielding causes near-end bone resorption.Due to the implantation of prosthese, the stress in joint handle near-end host bone is starkly lower than the numerical value in natural femur, produces stress shielding.According to Wolff effect, the bone amount at this place will significantly disappear, and forms bone resorption district, and causing the failure fixed and prosthetic loosening, is one of risk factor of prosthetic loosening at a specified future date.
And the femoral hip stem of prior art, as notification number: " wing-shaped spine " as described in CN201404312 " femoral stem with wing-shaped spine " patent is fixing strip spinous process, after implant into body pulp cavity, main stress point is in the lower end of " wing-shaped spine ", stress point Relatively centralized; In addition, because it is fixing strip spinous process, during implant into body pulp cavity, strip spinous process can damage pulp cavity inwall sclerotin.What same notification number: CN201759699U " Combined thigh bone handle " patent was addressed is a kind of fixing double wedge, can damage equally during implant into body pulp cavity near end of thighbone sclerotin, will the double wedge on top be made not reach stressed requirement time serious.
Above description shows, the task of top priority will invent a kind of interface itself can form the enough combinations of intensity, effectively can prevent prosthetic loosening, and the femoral hip stem that can not can damage pulp cavity inwall sclerotin when implant into body pulp cavity.
Summary of the invention
The object of the invention is the disadvantage existed for above-mentioned existing femoral hip stem, a kind of femoral hip stem with distributed carrying holdfast is provided, it is by adopting the distributed carrying holdfast with memory function, make interface itself can form the enough combinations of intensity, effectively can prevent femoral stem from loosening, and can not can damage pulp cavity inwall sclerotin when implant into body pulp cavity.
Above-mentioned goal of the invention is achieved through the following technical solutions, a kind of femoral hip stem with distributed carrying holdfast, and it comprises femoral stem, and femoral stem is made up of femoral stem neck and femoral stem body; Femoral stem body comprises body proximal end and body distal end, and its main points are, femoral stem body is shaped with multiple hole or groove, is mounted with carrying holdfast in hole or groove.
As preferably, described carrying holdfast is made up of memorial alloy or titanium alloy or medical stainless steel or vitallium.
As preferably, described carrying holdfast is made up of memorial alloy.
As preferably, a kind of femoral hip stem with distributed carrying holdfast is in operation before implant into body pulp cavity, first femoral stem and carrying holdfast should be placed in 0-5 degree cold water K cryogenic treatment, carrying holdfast is by deformation retract to the hole or groove of femoral stem body, make to damage human body pulp cavity sclerotin when femoral stem and carrying holdfast implant into body pulp cavity, when carrying holdfast and returning to the temperature of normal body temperature, recoverable force is protruded femoral stem body outer wall and is inserted in human body pulp cavity skeleton by carrying holdfast.
As preferably, described femoral stem body is shaped with multiple hole or groove, is the hole or the groove that are shaped with multiple regular distribution in body proximal end, in hole or groove, is mounted with carrying holdfast; Circular or the prismatic in carrying holdfast cross section or triangle or regular polygon or ellipse.
As preferably, described femoral stem and carrying holdfast, its surface all or local be compounded with bioactivity coatings, or carry out sandblasting or polishing.
The use operation of the present invention in artificial hip joint replacing operation is as follows: first surgical incision skin, subcutaneous tissue, fascia lata; cut-away portions gluteus medius and gluteus minimus, cut-out joint capsule; expose near end of thighbone; under the protection of wide periosteum stripping, goose saw blocks femoral stem neck; by anterior dislocation of hip joint, appear femoral head section.Expand marrow with manual marrow expanding device, connect Myelocavity file by a number file pulp cavity with bone hammer, Myelocavity file connection handle, until pulp cavity shape matches with femoral stem size, then femoral stem is inserted in femoral bone cavitas medullaris (use bone hammer if desired).When carrying holdfast and selecting memorial alloy, before femoral stem, carrying holdfast implant pulp cavity, first femoral stem and carrying holdfast should be placed in 0-5 degree cold water K cryogenic treatment, carrying holdfast is by deformation retract to the hole or groove on femoral stem surface, can not damage femur sclerotin when making femoral stem and carrying holdfast implant pulp cavity, when carrying holdfast and returning to normal body temperature, distortion is protruded femoral stem outer wall and is inserted in skeleton by carrying holdfast.The transmission of the power of the femoral stem neck come, by femoral stem body and be dispersed in the carrying holdfast going down of femoral stem body surrounding to femur, realize femoral stem and implant pulp cavity fixing reliability, stability, anti-sinking ability, anti-rotation performance and loosing prevention ability, avoid producing stress shielding phenomenon near end of thighbone simultaneously.
The present invention's beneficial effect compared with prior art: it makes full use of the abundant spongy bone district of near end of thighbone, use in the hole of multiple regular distribution or groove and fixing carrying holdfast is installed, the solidifying technique for fixing like root pile formula, avoid because implanting the stress shielding and prosthese fixing-stable sex chromosome mosaicism that high rigidity femoral stem causes, under the Rigidity and strength not reducing articular prosthesis, reach the power stream effectively avoiding femoral head to be subject to produce stress shielding phenomenon by femoral stem going down near end of thighbone in a large number and cause near-end bone resorption and prosthetic loosening, achieve strengthening femoral hip stem implanted femur pulp cavity initial stage fixing reliability, stability, anti-sinking ability under the long-term loading conditions of enhancing femoral hip stem in pulp cavity, raising femoral hip stem and femur immobile interface have enough anti-rotation performances when sitting posture stands up with the state of squatting down, increase the loosing prevention ability of femoral hip stem life-time service.Again because carrying holdfast memorial alloy manufactures, can not damage femur sclerotin when making femoral stem and carrying holdfast implant pulp cavity, thus further enhancing the loosing prevention ability of reliability, stability and the life-time service that femoral hip stem implanted femur pulp cavity is fixed.The present invention will have more its clinical expansion to the further rejuvenation of joint replacement object and use meaning.
Accompanying drawing explanation
Fig. 1: structural representation front view of the present invention
The left view of Fig. 2: Fig. 1
Fig. 3: Figure 1A place's enlarged drawing
Fig. 4: the using state figure after implant into body pulp cavity of the present invention
In Fig. 1-4,1-femoral stem, 2-femoral stem neck, 3-femoral stem body, 4-body proximal end, 5-body distal end, 6-groove, 7-carries holdfast, 8-human body pulp cavity.
Detailed description of the invention
The invention will be further described for embodiment below just represented by Fig. 1-4, and it comprises femoral stem 1, and femoral stem 1 is made up of femoral stem neck 2 and femoral stem body 3; Femoral stem body 3 comprises body proximal end 4 and body distal end 5, and body proximal end 4 is shaped with the groove 6 of multiple regular distribution, and be mounted with carrying holdfast 7 in groove 6, carrying holdfast 7 cross section is circular; Described carrying holdfast 7 is made up of memorial alloy.The present embodiment is in operation before implant into body pulp cavity 8, first femoral stem 1 and carrying holdfast 7 should be placed in 0-5 degree cold water K cryogenic treatment, carry holdfast 7 by deformation retract in the groove 6 of femoral stem body 3, make to damage human body pulp cavity 8 sclerotin when femoral stem 1 and carrying holdfast 7 implant into body pulp cavity 8, when carrying holdfast 7 and returning to the temperature of normal body temperature, recoverable force is protruded femoral stem body 3 outer wall and is inserted in human body pulp cavity 8 skeleton by carrying holdfast 7.Described femoral stem 1 and carrying holdfast 7, its surface is all compounded with bioactivity coatings.
Claims (10)
1. be with a femoral hip stem for distributed carrying holdfast, it comprises femoral stem, and femoral stem is made up of femoral stem neck and femoral stem body; Femoral stem body comprises body proximal end and body distal end, it is characterized in that, femoral stem body is shaped with multiple hole or groove, is mounted with carrying holdfast in hole or groove.
2. a kind of femoral hip stem with distributed carrying holdfast according to claim 1, is characterized in that, described carrying holdfast is made up of memorial alloy or titanium alloy or medical stainless steel or vitallium.
3. a kind of femoral hip stem with distributed carrying holdfast according to claim 2, it is characterized in that, described carrying holdfast is made up of memorial alloy.
4. a kind of femoral hip stem with distributed carrying holdfast according to claim 3, it is characterized in that, it is in operation before implant into body pulp cavity, first femoral stem and carrying holdfast should be placed in 0-5 degree cold water K cryogenic treatment, carrying holdfast is by deformation retract to the hole or groove of femoral stem body, make to damage human body pulp cavity sclerotin when femoral stem and carrying holdfast implant into body pulp cavity, when carrying holdfast and returning to the temperature of normal body temperature, recoverable force is protruded femoral stem body outer wall and is inserted in human body pulp cavity skeleton by carrying holdfast.
5. a kind of femoral hip stem with distributed carrying holdfast according to claim 1 and 2, it is characterized in that, described femoral stem body is shaped with multiple hole or groove, is the hole or the groove that are shaped with multiple regular distribution in body proximal end, in hole or groove, is mounted with carrying holdfast; Circular or the prismatic in carrying holdfast cross section or triangle or regular polygon or ellipse.
6. a kind of femoral hip stem with distributed carrying holdfast according to claim 3, it is characterized in that, described femoral stem body is shaped with multiple hole or groove, is the hole or the groove that are shaped with multiple regular distribution in body proximal end, in hole or groove, is mounted with carrying holdfast; Circular or the prismatic in carrying holdfast cross section or triangle or regular polygon or ellipse.
7. a kind of femoral hip stem with distributed carrying holdfast according to claim 4, it is characterized in that, described femoral stem body is shaped with multiple hole or groove, is the hole or the groove that are shaped with multiple regular distribution in body proximal end, in hole or groove, is mounted with carrying holdfast; Circular or the prismatic in carrying holdfast cross section or triangle or regular polygon or ellipse.
8. a kind of femoral hip stem with distributed carrying holdfast according to claim 1 and 2, is characterized in that, described femoral stem and carrying holdfast, its surface all or is locally compounded with bioactivity coatings, or carries out sandblasting or polishing.
9. a kind of femoral hip stem with distributed carrying holdfast according to claim 3, is characterized in that, described femoral stem and carrying holdfast, its surface all or is locally compounded with bioactivity coatings, or carries out sandblasting or polishing.
10. a kind of femoral hip stem with distributed carrying holdfast according to claim 5, is characterized in that, described femoral stem and carrying holdfast, its surface all or is locally compounded with bioactivity coatings, or carries out sandblasting or polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585924.7A CN105250054A (en) | 2015-09-15 | 2015-09-15 | Hip joint femoral stem with distributed bearing rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585924.7A CN105250054A (en) | 2015-09-15 | 2015-09-15 | Hip joint femoral stem with distributed bearing rivet |
Publications (1)
| Publication Number | Publication Date |
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| CN105250054A true CN105250054A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585924.7A Pending CN105250054A (en) | 2015-09-15 | 2015-09-15 | Hip joint femoral stem with distributed bearing rivet |
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| CN (1) | CN105250054A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259900A (en) * | 2018-09-06 | 2019-01-25 | 北京安颂科技有限公司 | The method for implantation of acetabular component, hip prosthesis and acetabular component |
| CN110393613A (en) * | 2019-08-14 | 2019-11-01 | 北京市春立正达医疗器械股份有限公司 | A kind of elbow joint prosthese |
| CN111839821A (en) * | 2020-07-13 | 2020-10-30 | 北京市春立正达医疗器械股份有限公司 | Hip joint prosthesis for femoral neck remaining operation |
| WO2021149057A3 (en) * | 2020-01-23 | 2021-09-02 | Entis Allan C | Joint replacement apparatus |
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| CN2484918Y (en) * | 2001-05-28 | 2002-04-10 | 韦兆祥 | Artificial hip joint and femur shaft |
| CN1909848A (en) * | 2004-01-16 | 2007-02-07 | 扩展整形外科公司 | Bone fracture treatment devices |
| CN1943522A (en) * | 2005-08-05 | 2007-04-11 | 比德曼莫泰赫有限公司 | Bone anchoring element |
| CN101123921A (en) * | 2004-03-31 | 2008-02-13 | 奥叟菲克斯公司 | Intramedullary nail provided with shape memory material elements |
| US20080243264A1 (en) * | 2007-03-26 | 2008-10-02 | Fonte Matthew V | Proximally Self-Locking Long Bone Prosthesis |
| US20090060977A1 (en) * | 2005-05-20 | 2009-03-05 | Neotract, Inc. | Devices, systems and methods for treating benign prostatic hyperplasia and other conditions |
| CN203388965U (en) * | 2013-06-13 | 2014-01-15 | 重庆润泽医药有限公司 | Hip joint replacement transplantation femoral stem |
| CN204337023U (en) * | 2014-11-20 | 2015-05-20 | 张弛 | Head marrow nail |
| CN204909734U (en) * | 2015-09-15 | 2015-12-30 | 浙江科惠医疗器械股份有限公司 | Hip joint femoral stem of anchor nail is born to area distributing type |
-
2015
- 2015-09-15 CN CN201510585924.7A patent/CN105250054A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2484918Y (en) * | 2001-05-28 | 2002-04-10 | 韦兆祥 | Artificial hip joint and femur shaft |
| CN1909848A (en) * | 2004-01-16 | 2007-02-07 | 扩展整形外科公司 | Bone fracture treatment devices |
| CN101123921A (en) * | 2004-03-31 | 2008-02-13 | 奥叟菲克斯公司 | Intramedullary nail provided with shape memory material elements |
| US20090060977A1 (en) * | 2005-05-20 | 2009-03-05 | Neotract, Inc. | Devices, systems and methods for treating benign prostatic hyperplasia and other conditions |
| CN1943522A (en) * | 2005-08-05 | 2007-04-11 | 比德曼莫泰赫有限公司 | Bone anchoring element |
| US20080243264A1 (en) * | 2007-03-26 | 2008-10-02 | Fonte Matthew V | Proximally Self-Locking Long Bone Prosthesis |
| CN203388965U (en) * | 2013-06-13 | 2014-01-15 | 重庆润泽医药有限公司 | Hip joint replacement transplantation femoral stem |
| CN204337023U (en) * | 2014-11-20 | 2015-05-20 | 张弛 | Head marrow nail |
| CN204909734U (en) * | 2015-09-15 | 2015-12-30 | 浙江科惠医疗器械股份有限公司 | Hip joint femoral stem of anchor nail is born to area distributing type |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259900A (en) * | 2018-09-06 | 2019-01-25 | 北京安颂科技有限公司 | The method for implantation of acetabular component, hip prosthesis and acetabular component |
| CN109259900B (en) * | 2018-09-06 | 2023-08-22 | 北京安颂科技有限公司 | Acetabular prosthesis, hip joint prosthesis and method for implanting an acetabular prosthesis |
| CN110393613A (en) * | 2019-08-14 | 2019-11-01 | 北京市春立正达医疗器械股份有限公司 | A kind of elbow joint prosthese |
| WO2021149057A3 (en) * | 2020-01-23 | 2021-09-02 | Entis Allan C | Joint replacement apparatus |
| CN111839821A (en) * | 2020-07-13 | 2020-10-30 | 北京市春立正达医疗器械股份有限公司 | Hip joint prosthesis for femoral neck remaining operation |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |
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| RJ01 | Rejection of invention patent application after publication |