CN105167890A - Multifunctional elbow joint replacement prosthesis - Google Patents
Multifunctional elbow joint replacement prosthesis Download PDFInfo
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- CN105167890A CN105167890A CN201510702988.0A CN201510702988A CN105167890A CN 105167890 A CN105167890 A CN 105167890A CN 201510702988 A CN201510702988 A CN 201510702988A CN 105167890 A CN105167890 A CN 105167890A
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Abstract
The invention provides a multifunctional elbow joint replacement prosthesis which comprises a humerus assembly, an ulna assembly, a radius assembly and a pin shaft assembly. The humerus assembly comprises a humerus handle, a yoke and a capitulum humeri. The ulna assembly comprises an ulna handle, an ulna neck and an ulna head. The radius assembly comprises a radial head and a radial bone marrow needle. The pin shaft assembly comprises a pin shaft outer nail of a hollow barrel structure and a pin shaft inner nail inserted into the pin shaft outer nail. One end of the pin shaft inner nail is provided with an anti-disengagement piece used for preventing the whole pin shaft inner nail from entering the pin shaft outer nail. The other end of the pin shaft inner nail is provided with a locking piece. The pin shaft assembly enables the ulna assembly to pivot around a shaft and fixes the capitulum humeri to a first convex lug. The multifunctional elbow joint replacement prosthesis accords with human body daily behavior movement characteristics, has the good stability and safety, can achieve partial replacement or whole replacement, improves biocompatibility with the sclerotin, and is not likely to cause looseness or infection or instability or other complications and long in service life.
Description
Technical field
The present invention relates to orthopaedics implanted prosthetics field, particularly relate to a kind of Multifunctional elbow knuckle replacement prosthesis.
Background technology
When because of rheumatism, morphotropism joint or wound equivalent damage elbow joint time, make the afunction of elbow joint, meanwhile, feel fierce pain.In this case, in order to recover elbow joint function, need the replacement operation carrying out artificial elbow joint.Such as, at full Elbow replacement intra-operative, surgeon by the far-end of prosthese humeral component patients with implantation humerus, and by the near-end of prosthese ulna assembly patients with implantation ulna.Prosthese humeral component and prosthese ulna assembly are usually by chain connection, and described hinge makes the pivoting action between prosthese humeral component and prosthese ulna assembly become possibility, are engaged to reproduce naturally dissecting of elbow joint.
Existing artificial elbow joint prosthese is completely with reference to the anatomical shape of human elbow, it mainly comprises humeral component and ulna assembly, though meet the daily behavior kinetic characteristic of human body, but the following technical problem of elbow joint prosthese ubiquity: and what (1) caused due to the defect of structure loosens, infects and the complication such as unstable (subluxation or dislocation); (2) initial stability of humeral component and ulna assembly and combination stability all not high, stressed unreasonable, cause Elbow replacement prosthese not long for service life; (3) the bone cement component of elbow joint prosthese is unreasonable, affects stability and the safety of postoperative elbow joint.
Therefore, how to invent a kind of safe, to stablize life-span longer Multifunctional elbow knuckle replacement prosthesis be that those skilled in the art have technical barrier to be solved.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of Multifunctional elbow knuckle replacement prosthesis, this Multifunctional elbow knuckle replacement prosthesis not only meets human body daily behavior kinetic characteristic, and there is good stability and safety, aliquot replacement can be carried out or all replace, improve the biocompatibility with sclerotin, not easily occur loosening, infecting and the complication such as instability, long service life.
For solving the problems of the technologies described above, the present invention includes following technical scheme:
The invention provides a kind of Multifunctional elbow knuckle replacement prosthesis, comprise humeral component, ulna assembly, radius assembly and Assembly of pin,
Wherein said humeral component comprises humerus handle, yoke and capitulum of humerus, described yoke has the first lug and the second lug that extend respectively from the relative both sides of the base portion of described yoke, described first lug and the second lug are respectively equipped with the first hole and the second hole, described capitulum of humerus is set on the first lug, and with the through hole be communicated with described first hole, the base portion of described yoke oppositely extends the flange for clamping humerus cortical bone;
Described ulna assembly comprises ulna handle, ulna neck and head of ulna, and described head of ulna has the connecting hole laterally run through, and described ulna neck is arranged between head of ulna and ulna handle;
Described radius assembly comprises capitulum radii and radius broach, and the end face of described capitulum radii is as articular surface and the formation articular cavity that caves inward, and described articular surface is cambered surface;
Described Assembly of pin comprise bearing pin follow closely outward with bearing pin in follow closely, described bearing pin is followed closely as hollow tubular structure outward, one end that bearing pin is followed closely outward is provided with the first annular flange flange, follow closely the other end followed closely from bearing pin in described bearing pin and be inserted therein portion, in described bearing pin one end of nail be provided with for prevent the overall bearing pin that submerges of nail in bearing pin follow closely outward in anti-falling piece, in bearing pin, the other end of nail is provided with closure, and described Assembly of pin supplies described ulna assembly around axle pivotable, and is fixed on the first lug by described capitulum of humerus.
As preferably, in described bearing pin, nail is column solid construction, described anti-falling piece is the second annular flange flange being located at nail near-end in bearing pin, described closure is by the hollow-core construction be located in bearing pin some shell fragments of following closely far-end and formed, the root of described shell fragment follows closely remote extension along in described bearing pin, and the end of shell fragment is provided with the projection of band lead-in chamfered.Shell fragment gathers rear projection together in truncated cone-shaped, and in bearing pin, the easy bearing pin that inserts of nail is followed closely outward, and simultaneously due to the agnail effect of projection and the elasticity of shell fragment itself, when not having instrument, in bearing pin, nail skids off in not easily following closely from bearing pin.
Multifunctional elbow knuckle replacement prosthesis of the present invention, more meets human body daily behavior kinetic characteristic by the improvement of structure, by bearing pin follow closely outward with bearing pin in follow closely the Assembly of pin that forms while sealed humeral component and ulna assembly for ulna assembly around axle pivotable; The closure of nail can be resisted against on the inwall that bearing pin follows closely outward by the projection on shell fragment tightly in bearing pin, under the cooperation of second annular flange flange of following closely in first annular flange flange of meanwhile also following closely outward at bearing pin and bearing pin, Elbow replacement prosthese is made to have better stability and safety, and not easily occur loosening, infecting and the complication such as instability, long service life; In addition, also according to the disease condition of patient, aliquot replacement or the whole displacements with capitulum radii can be carried out.
As preferably, described capitulum of humerus is provided with and is set in opening on the first lug for it, capitulum of humerus with the contact surface of the first lug on be distributed with annular boss along described through hole outer rim, described annular boss to stretch in the first hole and is resisted against on the inner peripheral in described first hole, and described capitulum of humerus is provided with the groove for accommodating described first annular flange flange on the end face away from described contact surface.The opening sleeve of capitulum of humerus is on the first lug, and its opening portion has a breach just to engage with the first lug, effectively can play anti-effect of revolving.
As preferably, be respectively equipped with the first bulge loop and the second bulge loop in described first hole and the second hole, described first bulge loop and the second bulge loop abut with described annular boss and the second annular flange flange respectively.Humerus axle sleeve and ulna axle sleeve are located at the first bulge loop and the second bulge loop respectively, the impact of external forces can not be subject to and slippage easily, improve the stability of replacement prosthesis.
As preferably, the surface of described humerus handle, ulna handle and radius broach is coated with bone cement, and described bone cement is made up of the raw material of following mass percent: magnesium oxide 10%-25%, titanium chloride 10%-20%, cobaltous chloride 5%-10%, polyacrylamide 10%-15%, collagen protein 10%-15%, methylcellulose 2%-4%, D-glucosamine 0.5%-1%, chitosan 0.5%-1%, Polyethylene Glycol 1%-2.5% and deionized water 20%-30%.
The present invention is more conducive to the combination with human body bone by bone cement prepared by above material, and impact can not be played on the sclerotin of surrounding, be conducive to metabolism and the growth of skeleton, and can body fluid balance be kept, keep suitable blood volume, the pH value of blood pressure and body fluid; And bone cement provided by the invention has very strong anti-corrosive properties and water proofing property, and then improve the service life of Multifunctional elbow knuckle replacement prosthesis.
As preferably, humerus axle sleeve is all embedded with in first hole of described humeral component and the second hole, be equipped with ulna axle sleeve in the connecting hole of described ulna assembly, the material of described humerus axle sleeve and ulna axle sleeve is ultra-high molecular weight polyethylene, is preferably high crosslinked polyethylene.High crosslinked polyethylene has good biocompatibility and wear-resistant property.
As preferably, the cross section of described humerus handle is triangular shaped, and the cross section of described ulna handle is diamond shape.The cross section of triangle and rhombus all can play anti-effect of revolving, and adds initial stability and the combination stability of elbow joint prosthese.
As preferably, described humerus handle and vertical direction are 8-10 ° of angle.Loosening of postoperative people's elbow joint prosthese is relevant with Biomechanical factor, when elbow joint flexing 90 ° and hand is subject to the active force of side time, distal humerus can produce larger turning moment, very large tension force can be brought to ligament, humerus handle offset from perpendicular 8-10 ° of angle, decrease tension force suffered by ligament, reduce the probability that complication occurs.
Further preferably, the outer surface that described bearing pin is followed closely outward is for reducing the high burnishing surface with the coefficient of friction of ulna shaft room.The wearing and tearing of ulna axle sleeve and Assembly of pin can be reduced like this, improve the service life that Multifunctional elbow knuckle displacement is false, make the pivotable of ulna assembly more freely simultaneously.
Beneficial effect of the present invention is as follows:
Multifunctional elbow knuckle replacement prosthesis of the present invention, this Multifunctional elbow knuckle replacement prosthesis is by more meeting human body daily behavior kinetic characteristic after the improvement of structure, and there is good stability and safety, aliquot replacement can be carried out or all replace, improve the biocompatibility with sclerotin, not easily occur loosening, infecting and the complication such as instability, long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of Multifunctional elbow knuckle replacement prosthesis of the present invention;
Fig. 2 is the structural representation of humeral component of the present invention;
Fig. 3 is the structural representation of capitulum of humerus proximal end face of the present invention;
Fig. 4 is the structural representation of capitulum of humerus distal face of the present invention;
Fig. 5 is the structural representation of ulna assembly of the present invention;
Fig. 6 is the structural representation of radius assembly of the present invention;
Fig. 7 is the structural representation of Assembly of pin of the present invention.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of Multifunctional elbow knuckle replacement prosthesis in embodiment of the present invention.This Multifunctional elbow knuckle replacement prosthesis comprises humeral component 1, ulna assembly 2, radius assembly 3 and Assembly of pin 4.
As shown in Figure 1, humeral component 1 comprises humerus handle 11, yoke 12, capitulum of humerus 13 and humerus axle sleeve 14.
As shown in Figure 2, the cross section of humerus handle 11 is triangular shaped, and leg-of-mutton cross section plays anti-effect of revolving, and adds initial stability and the combination stability of present embodiment elbow joint prosthese.Humerus handle 11 and vertical direction are 8-10 ° of angle, loosening of postoperative elbow joint prosthese is relevant with Biomechanical factor, when elbow joint flexing 90 ° and hand is subject to the active force of side time, distal humerus can produce larger turning moment, very large tension force can be brought to ligament, humerus handle 11 offset from perpendicular 8-10 ° of angle, decreases tension force suffered by ligament, reduces the probability that complication occurs.
Yoke 12 has the first lug 15 and the second lug 16 extended respectively from the relative both sides of the base portion of yoke 12, and the base portion of yoke 12 oppositely extends the flange 17 for clamping humerus cortical bone.First lug 15 and the second lug 16 are respectively equipped with the first hole 151 and the second hole 161, the first bulge loop 1511 and the second bulge loop 1611 is respectively equipped with in first hole and the second hole, all be embedded with humerus axle sleeve 14 in first hole 151 and the second hole 161, humerus axle sleeve 14 is between the first lug 15 and the second lug 16 and the bulge loop all do not exceeded in position in respective hole.
As shown in Figure 2, Figure 3 and Figure 4, capitulum of humerus 13 is provided with opening 132, and capitulum of humerus 13 is set on the first lug 15 by opening 132, and opening 132 has a breach just to engage with the first lug 15, effectively can play anti-effect of revolving.Capitulum of humerus 13 is also with the through hole 131 be communicated with the first hole 151, capitulum of humerus 13 with the contact surface (i.e. proximal end face) of the first lug 15 on be distributed with annular boss 133 along through hole 131 outer rim, annular boss 133 stretches into first interior also its side, hole 151 and is resisted against on the inner peripheral in the first hole 151, its end face abuts with first bulge loop 1511 in the first hole 151, and capitulum of humerus 13 is being provided with groove 134 away from the end face (i.e. distal face) of described contact surface.
The material of humerus axle sleeve 14 is ultra-high molecular weight polyethylene, is preferably high crosslinked polyethylene.High crosslinked polyethylene has good biocompatibility and wear-resistant property.
As shown in Figure 5, ulna assembly 2 comprises ulna handle 21, ulna neck 22, head of ulna 23 and ulna axle sleeve 24.The cross section of humerus handle 11 is triangular shaped, and leg-of-mutton cross section plays anti-effect of revolving, and adds initial stability and the combination stability of present embodiment elbow joint prosthese.Ulna neck is arranged between head of ulna 23 and ulna handle 21, and head of ulna 23 has the connecting hole 231 laterally run through.Humerus axle sleeve 14 interference fit is arranged in connecting hole 231, and the material of humerus axle sleeve 14 is ultra-high molecular weight polyethylene, is preferably high crosslinked polyethylene.High crosslinked polyethylene has good biocompatibility and wear-resistant property.
As shown in Figure 6, radius assembly 3 comprises capitulum radii 31 and radius broach 32, and the end face of capitulum radii 3 is as articular surface 311 and the formation articular cavity that caves inward, and articular surface 311 is cambered surface and the center of circle is positioned on the axis of radius broach 32.
As shown in Figure 7, Assembly of pin 4 comprises bearing pin and follows closely nail 42 in 41 and bearing pin outward, and Assembly of pin 4 supplies described ulna assembly 2 around axle pivotable, and is fixed on the first lug 15 by the capitulum of humerus 13 of humeral component 1.
Bearing pin follows closely 41 outward for hollow tubular structure, and the outside that bearing pin follows closely one end of 41 is outward provided with the first annular flange flange 411, and the other end that in bearing pin, nail 42 follows closely 41 from bearing pin is inserted therein portion.The outer surface that bearing pin follows closely 41 is outward the high burnishing surface of the coefficient of friction for reducing and between ulna axle sleeve 24.The wearing and tearing of ulna axle sleeve 24 and Assembly of pin 4 can be reduced like this, improve the service life that Multifunctional elbow knuckle displacement is false, make the pivotable of ulna assembly 2 more freely simultaneously.
Nail 42 be column solid construction in bearing pin, and in bearing pin, one end of nail 42 is provided with and follows closely anti-falling piece in 41 outward for preventing from following closely in bearing pin the 42 entirety bearing pin that submerges, and the other end following closely 42 in bearing pin is provided with closure.Wherein anti-falling piece is that the end face being located at second annular flange flange 421, second annular flange flange 421 of following closely 42 near-ends in bearing pin abuts with the second bulge loop 1611.Closure is that the root of shell fragment 422 is along the remote extension following closely 42 in bearing pin, and the end of shell fragment 422 is provided with the projection 4221 of band lead-in chamfered by the hollow-core construction be located in bearing pin some shell fragments 422 of following closely 42 far-ends and formed.Shell fragment 422 is gathered rear projection and is collected together together in truncated cone-shaped, nail 42 in bearing pin is made easily to insert the inside that bearing pin follows closely 41 outward, simultaneously due to the agnail effect of protruding 4221 and the elasticity of shell fragment 422 itself, when not having instrument, in bearing pin, nail 42 is not easily followed closely in 41 and is skidded off from bearing pin.
The surface of humerus handle 11, ulna handle 21 and radius broach 32 is coated with bone cement, and described bone cement is made up of the raw material of following mass percent: magnesium oxide 10%-25%, titanium chloride 10%-20%, cobaltous chloride 5%-10%, polyacrylamide 10%-15%, collagen protein 10%-15%, methylcellulose 2%-4%, D-glucosamine 0.5%-1%, chitosan 0.5%-1%, Polyethylene Glycol 1%-2.5% and deionized water 20%-30%.
The bone cement prepared by above material in embodiment of the present invention is more conducive to the combination with human body bone, and impact can not be played on the sclerotin of surrounding, be conducive to metabolism and the growth of skeleton, and can body fluid balance be kept, keep suitable blood volume, the pH value of blood pressure and body fluid; And bone cement provided by the invention has very strong anti-corrosive properties and water proofing property, and then improve the service life of Multifunctional elbow knuckle replacement prosthesis.
In sum, Multifunctional elbow knuckle replacement prosthesis of the present invention, this Multifunctional elbow knuckle replacement prosthesis is by more meeting human body daily behavior kinetic characteristic after the improvement of structure, and there is good stability and safety, aliquot replacement can be carried out or all replace, improve the biocompatibility with sclerotin, not easily occur loosening, infecting and the complication such as instability, long service life.
The above embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (9)
1. a Multifunctional elbow knuckle replacement prosthesis, comprises humeral component (1), ulna assembly (2), radius assembly (3) and Assembly of pin (4), it is characterized in that,
Described humeral component (1) comprises humerus handle (11), yoke (12) and capitulum of humerus (13), described yoke (12) has the first lug (15) and the second lug (16) that extend respectively from the relative both sides of the base portion of described yoke (12), described first lug (15) and the second lug (16) are respectively equipped with the first hole (151) and the second hole (161), described capitulum of humerus (13) is set in (15) on the first lug, and with the through hole (131) be communicated with described first hole (151), the base portion of described yoke (12) oppositely extends the flange (17) for clamping humerus cortical bone,
Described ulna assembly (2) comprises ulna handle (21), ulna neck (22) and head of ulna (23), described head of ulna (23) has the connecting hole (231) laterally run through, and described ulna neck (22) is arranged between head of ulna (23) and ulna handle (21);
Described radius assembly (3) comprises capitulum radii (31) and radius broach (32), the end face of described capitulum radii (31) is as articular surface (311) and the formation articular cavity that caves inward, and described articular surface (311) is cambered surface;
Described Assembly of pin (4) comprises bearing pin and follows closely nail (42) in (41) and bearing pin outward, described bearing pin follows closely (41) outward for hollow tubular structure, one end that bearing pin is followed closely outward (41) is provided with the first annular flange flange (411), the other end that the interior nail (42) of described bearing pin follows closely (41) from bearing pin is inserted therein portion, one end of nail (42) is provided with and follows closely anti-falling piece in (41) outward for preventing from following closely in bearing pin (42) entirety bearing pin that submerges in described bearing pin, in bearing pin, the other end of nail (42) is provided with closure, described Assembly of pin (4) supplies described ulna assembly (2) around axle pivotable, and described capitulum of humerus (13) is fixed on (15) on the first lug.
2. Multifunctional elbow knuckle replacement prosthesis as claimed in claim 1, it is characterized in that, in described bearing pin, nail (42) is column solid construction, described anti-falling piece follows closely second annular flange flange (421) of (42) near-end in bearing pin for being located at, described closure is the hollow-core construction formed by the some shell fragments (422) being located at nail (42) far-end in bearing pin, the root of described shell fragment (422) follows closely (42) remote extension along in described bearing pin, and the end of shell fragment (422) is provided with the projection (4221) of band lead-in chamfered.
3. Multifunctional elbow knuckle replacement prosthesis as claimed in claim 1, it is characterized in that, described capitulum of humerus (13) is provided with and is set in opening (132) on the first lug (15) for it, capitulum of humerus (13) with the contact surface of the first lug (15) on be distributed with annular boss (133) along described through hole (131) outer rim, described annular boss (133) to stretch in the first hole (151) and is resisted against on the inner peripheral of described first hole (151), described capitulum of humerus (13) is provided with the groove (134) for accommodating described first annular flange flange (411) on the end face away from described contact surface.
4. Multifunctional elbow knuckle replacement prosthesis as claimed in claim 3, it is characterized in that, be respectively equipped with the first bulge loop (1511) and the second bulge loop (1611) in described first hole (151) and the second hole (161), described first bulge loop (1511) and the second bulge loop (1611) abut with described annular boss (133) and the second annular flange flange (421) respectively.
5. as Multifunctional elbow knuckle replacement prosthesis that claim 1 is stated, it is characterized in that, described humerus handle (11), the surface of ulna handle (21) and radius broach (32) is coated with bone cement, described bone cement is made up of the raw material of following mass percent: magnesium oxide 10%-25%, titanium chloride 10%-20%, cobaltous chloride 5%-10%, polyacrylamide 10%-15%, collagen protein 10%-15%, methylcellulose 2%-5%, D-glucosamine 0.5%-1%, chitosan 0.5%-1%, Polyethylene Glycol 1%-2.5% and deionized water 20%-30%.
6. as Multifunctional elbow knuckle replacement prosthesis that claim 1 is stated, it is characterized in that, humerus axle sleeve (14) is all embedded with in first hole (151) of described humeral component and the second hole (161), in the connecting hole of described ulna assembly (2), (231) are equipped with ulna axle sleeve (24), the material of described humerus axle sleeve (14) and ulna axle sleeve (24) is ultra-high molecular weight polyethylene, is preferably high crosslinked polyethylene.
7. as the Multifunctional elbow knuckle replacement prosthesis that claim 1 is stated, it is characterized in that, the cross section of described humerus handle (11) is triangular shaped, and the cross section of described ulna handle (21) is diamond shape.
8. Multifunctional elbow knuckle replacement prosthesis as claimed in claim 1, is characterized in that, described humerus handle (11) and vertical direction are 8-10 ° of angle.
9. Multifunctional elbow knuckle replacement prosthesis as claimed in claim 1, is characterized in that, the outer surface that described bearing pin follows closely (41) outward be the high burnishing surface for the coefficient of friction between minimizing and ulna axle sleeve (24).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702988.0A CN105167890B (en) | 2015-10-26 | 2015-10-26 | Multifunctional elbow joint replacement prosthesis |
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|---|---|---|---|
| CN201510702988.0A CN105167890B (en) | 2015-10-26 | 2015-10-26 | Multifunctional elbow joint replacement prosthesis |
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| CN105167890A true CN105167890A (en) | 2015-12-23 |
| CN105167890B CN105167890B (en) | 2017-04-12 |
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| CN201510702988.0A Active CN105167890B (en) | 2015-10-26 | 2015-10-26 | Multifunctional elbow joint replacement prosthesis |
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Cited By (7)
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| CN107647945A (en) * | 2017-10-16 | 2018-02-02 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthese |
| CN110192935A (en) * | 2019-05-10 | 2019-09-03 | 北京市春立正达医疗器械股份有限公司 | Elbow joint prosthese |
| 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 |
| CN110446475A (en) * | 2017-03-31 | 2019-11-12 | 沃尔德马连接两合公司 | The connecting sleeve of the anchor for the prosthese being relatively arranged for two |
| CN110538007A (en) * | 2019-09-12 | 2019-12-06 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
| CN113786269A (en) * | 2021-11-17 | 2021-12-14 | 北京爱康宜诚医疗器材有限公司 | Wrist joint prosthesis |
| CN113876473A (en) * | 2021-08-31 | 2022-01-04 | 浙江大学 | Elbow joint prosthesis pin shaft external nail feeding device and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110446475A (en) * | 2017-03-31 | 2019-11-12 | 沃尔德马连接两合公司 | The connecting sleeve of the anchor for the prosthese being relatively arranged for two |
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| CN113876473A (en) * | 2021-08-31 | 2022-01-04 | 浙江大学 | Elbow joint prosthesis pin shaft external nail feeding device and working method thereof |
| CN113876473B (en) * | 2021-08-31 | 2022-08-23 | 浙江大学 | External pin nailing device for elbow joint prosthesis pin shaft and working method of external pin nailing device |
| CN113786269A (en) * | 2021-11-17 | 2021-12-14 | 北京爱康宜诚医疗器材有限公司 | Wrist joint prosthesis |
| CN113786269B (en) * | 2021-11-17 | 2022-04-19 | 北京爱康宜诚医疗器材有限公司 | Wrist joint prosthesis |
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