CN216090940U - Novel femoral prosthesis - Google Patents
Novel femoral prosthesis Download PDFInfo
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- CN216090940U CN216090940U CN202122164282.7U CN202122164282U CN216090940U CN 216090940 U CN216090940 U CN 216090940U CN 202122164282 U CN202122164282 U CN 202122164282U CN 216090940 U CN216090940 U CN 216090940U
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Abstract
The present invention provides a novel femoral prosthesis comprising: the upper part of the medullary cavity fixing piece is provided with a plurality of pin holes for the penetration of transverse pins, and the transverse pins penetrate through cortical bone to fix the medullary cavity fixing piece in the medullary cavity; the lower part of the medullary cavity fixing piece is inserted into the connecting piece and then locked on the upper part in the connecting piece through a locking nut thread; the upper part of the osteotomy segment is in conical fit connection with the lower part of the connecting piece; the upper part of the femoral condyle is in tapered fit connection with the lower part of the osteotomy section, and the lower part of the femoral condyle is used for implanting a knee joint. The advantages are that: compared with the common broach, the intramedullary nail is more stable, the whole structure of the intramedullary nail can share partial bone stress, a free motion environment suitable for bone fusion is provided, bone resorption is prevented, bone growth is promoted, and the stability of prosthesis implantation is further improved.
Description
Technical Field
The utility model relates to the technical field of orthopedic implants, in particular to a novel femoral prosthesis.
Background
The femur is the longest tubular bone of the human body, and after a tumor or other pathological changes occur in the human femur, the pathological changes on the femur usually need to be removed by an operation, and then the femur prosthesis is used to replace the pathological changes after removal, so as to meet the general requirements of patients on the femur, although related prostheses used at the femur are disclosed in the prior art and are successfully applied;
however, the narrow medullary cavity of the patient has the defect that the diameter of the common broach cannot be matched with the narrow medullary cavity; in addition, the existing prosthesis also has the defects of being incapable of sharing stress for bones, being incapable of providing free motion relief suitable for bone fusion and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel femoral prosthesis, which aims to overcome at least one technical defect, reduce design and process cost and facilitate accurate installation.
In order to realize the purpose of the utility model, the utility model provides the following technical scheme:
a novel femoral prosthesis comprising: the upper part of the medullary cavity fixing piece is provided with a plurality of pin holes for the penetration of transverse pins, and the transverse pins penetrate through cortical bone to fix the medullary cavity fixing piece in the medullary cavity;
the lower part of the medullary cavity fixing piece is inserted into the connecting piece and then locked on the upper part in the connecting piece through a locking nut thread;
the upper part of the osteotomy segment is in conical fit connection with the lower part of the connecting piece;
the upper part of the femoral condyle is in tapered fit connection with the lower part of the osteotomy section, and the lower part of the femoral condyle is used for implanting a knee joint.
Preferably, the intramedullary canal fixing member further comprises a cylindrical anchor bolt and an insertion section located at the lower part of the anchor bolt, the anchor bolt and the insertion section are integrally formed, and an external threaded section is arranged at the lower part of the insertion section and used for inserting the insertion section into the connecting member, and the locking nut enters from the bottom of the connecting member to be in threaded connection with the external threaded section;
wherein, the pinhole sets up on the crab-bolt, the one end of horizontal round pin is followed the pinhole of crab-bolt one side penetrates and follow the pinhole of crab-bolt opposite side is worn out the back and is penetrated the cortex bone, with the crab-bolt is fixed in the marrow intracavity.
Preferably, at least two groups of transverse pins are arranged on the anchor bolt along the transverse direction of the anchor bolt, at least two transverse pins are arranged in each group of transverse pins and are arranged at equal intervals along the longitudinal direction of the anchor bolt, and the adjacent transverse pins on the transverse direction of the anchor bolt are arranged in a staggered manner;
each transverse pin corresponds to two pin holes, and the transverse pins are located on the anchor bolts.
Preferably, the connecting piece includes that cavity main shaft, cross section structure are circular shape hollow minor axis, with No. one the longitudinal section structure that osteotomy section awl joins in marriage the connection is a cavity awl post of inverted isosceles trapezoid, the cavity main shaft hollow minor axis No. one the awl post is from last to connecting in order down, and vertical central line altogether, be used for the insertion section is followed cavity main shaft upper portion inserts the back, makes the external screw thread section is located No. one in the cavity awl post, and pass through lock nut follows No. one cavity awl post lower part enter into external screw thread section threaded connection, with will the connecting piece with medullary cavity mounting is connected fixedly in
The hollow secondary shaft is symmetrically provided with two first flat position grooves in the circumferential direction and is used for being matched with two symmetrical first clamping blocks protruding in the circumferential direction at the upper part of the osteotomy section;
preferably, a plurality of countersunk threaded holes which are obliquely arranged from top to bottom are formed in the circumferential direction of the hollow secondary shaft, so that the insertion ends of the fixing nails penetrate out from the top end face of the hollow secondary shaft after being inserted from the lower part of the hollow secondary shaft to abut against the hollow main shaft;
the first flat position groove is formed between two countersunk head threaded holes connected with each other.
Preferably, the osteotomy segment further comprises a first hollow taper sleeve with an opening facing the connecting piece, the first hollow taper sleeve is matched with the first hollow taper column, and the first clamping block is positioned at the upper part of the first hollow taper sleeve and protrudes out of the upper edge of the first hollow taper sleeve;
the novel femoral prosthesis has the advantages that: the femur is fixed by adopting the mode of the anchor bolt matched with the transverse pin in the prosthesis structure, compared with the common broach, the femur is more stable, the whole structure can share partial bone stress, a free motion environment suitable for bone fusion is provided, bone absorption is prevented, bone growth is promoted, and the stability of prosthesis implantation is further improved;
in addition, the surface of the part, inserted into the osteotomy segment, of the medullary cavity fixing piece is subjected to double spraying of titanium and Ha, so that the growth of sclerotin is promoted, and the implantation stability of the prosthesis is effectively improved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is an exploded view of the femoral prosthesis of the present invention;
FIG. 2 is a schematic structural view of the novel femoral prosthesis of the present invention, in which a portion of the lower part of the connecting member is cut away;
FIG. 3 is a schematic view of the upper portion of the femoral prosthesis of the present invention coupled to a femur;
FIG. 4 is a schematic perspective view of the femoral prosthesis of the present invention without femoral condyles;
FIG. 5 is a schematic perspective view of a portion of the connector;
FIG. 6 is a schematic perspective view of the intramedullary canal fixation member coupled to a transverse pin;
FIG. 7 is a schematic view of the configuration of the intramedullary canal fixture and connector without the spacer;
wherein:
the intramedullary canal fixing piece 10, the pin hole 11, the anchor bolt 12, the insertion section 13 and the external thread section 14;
a cross pin 20;
a connecting piece 30, a hollow main shaft 31, an upper section 31a, a middle section 31b and a lower section 31 c; the hollow secondary shaft 32, a first hollow conical column 33, a first flat groove 34, a countersunk threaded hole 35, a bushing 36 and a positioning bulge 37;
a lock nut 40;
the bone cutting device comprises an osteotomy segment 50, a first fixture block 51, a first hollow taper sleeve 52, a second hollow taper column 53 and a second flat position groove 54;
a femoral condyle 60, a second hollow taper sleeve 61 and a second fixture block 62;
the pin 70 is fixed.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Example one
The object of this embodiment is to provide a novel femoral prosthesis, according to the description of fig. 1-3, comprising
The intramedullary canal fixing piece 10 is provided with a plurality of pin holes 11 for the penetration of transverse pins 20 at the upper part, and the transverse pins 20 penetrate through cortical bone to fix the intramedullary canal fixing piece 10 in the intramedullary canal;
the connecting piece 30, the lower part of the intramedullary canal fixing piece 10 is inserted into the connecting piece 30 and then is locked on the upper part in the connecting piece 30 through the thread of the locking nut 40;
an osteotomy segment 50, the upper portion of which is in tapered engagement with the lower portion of the connector 30;
a femoral condyle 60, the upper portion of which is conically coupled to the lower portion of the osteotomy segment 50, and the lower portion of which is configured for implantation in a knee joint.
In a specific implementation process, the insertion end of the transverse pin 20 is a pointed end, so that the insertion is convenient.
The working principle of the technical scheme is as follows:
the prosthesis of the utility model penetrates cortical bone through the transverse pin 20 to fix the intramedullary canal fixing piece 10 in the intramedullary canal, the diameter of the upper part of the intramedullary canal fixing piece 10 can be selected according to the diameter of the medullary canal of a patient, the length of the transverse pin 20 is preferably 2mm exposed out of the cortical bone, and the proper specification is selected;
in the present invention, the osteotomy segment 50, the connector 30 and the taper connection manner before the femoral condyle 60 can be matched with any osteotomy segment 50 with different specifications according to the difference of the osteotomy length of the affected part.
The beneficial effects of the above technical scheme are:
the osteotomy segment 50 in the prosthesis is matched with the upper part and the lower part through conicity, so that the stability of the prosthesis can be ensured, and in addition, the osteotomy segment 50 with the adaptive length can be selected according to the difference of the osteotomy lengths of the affected parts; the femoral condyle 60 is instead provided to remove bone from the knee joint and is replaced with the femoral condyle 60, so that the prosthesis of the present invention more closely conforms to the free motion environment at the joint;
in this technical scheme, the fixed mode of horizontal pin 20 is more stable than ordinary broach.
Example two
According to the embodiment I, as shown in FIGS. 1-4, 6 and 7, the intramedullary canal fixing member 10 further comprises a cylindrical anchor bolt 12 and an insertion section 13 located at the lower part of the anchor bolt 12, the anchor bolt 12 is integrally formed with the insertion section 13, and the lower part of the insertion section 13 is provided with an external threaded section 14 for inserting the insertion section 13 into the connecting member 30, and is connected to the external threaded section 14 by the locking nut 40 entering from the bottom of the connecting member 30 in a threaded manner;
wherein, the pin hole 11 is arranged on the anchor bolt 12, one end of the transverse pin 20 penetrates through the pin hole 11 on one side of the anchor bolt 12 and penetrates through the cortical bone after penetrating out of the pin hole 11 on the other side of the anchor bolt 12, so as to fix the anchor bolt 12 in the marrow cavity.
Preferably, the intramedullary canal fixture 10 is integrally formed.
The beneficial effects of the above technical scheme are:
the specific structural design of the intramedullary canal fixing member 10 is such that after the insertion section 13 is inserted, the locking nut 40 is screwed onto the external thread section 14 to continuously screw the locking nut 40 onto the external thread section 14, and the connecting member 30 is continuously compressed to apply a preset stress value to the femur to achieve the pre-stress effect, wherein the pre-stress can share the stress for the bone, and at the same time, a free motion environment suitable for bone fusion is provided, thereby preventing bone resorption.
EXAMPLE III
According to the novel femoral prosthesis of the second embodiment, as shown in fig. 1-4, 6 and 7, at least two sets of the transverse pins 20 are arranged on the anchor bolt 12 along the transverse direction thereof, at least two transverse pins 20 are arranged in each set of the transverse pins 20 and are arranged at equal intervals along the longitudinal direction of the anchor bolt 12, and the transverse pins 20 adjacent to each other in the transverse direction of the anchor bolt 12 are arranged in a staggered manner;
each transverse pin 20 corresponds to two pin holes 11, and the transverse pins 20 are located on the anchor bolts 12.
The beneficial effects of the above technical scheme are:
the layout design of the transverse pin 20 on the anchor bolt 12 further improves the stability between the prosthesis and the femur.
Example four
According to the novel femoral prosthesis of the second embodiment, as shown in fig. 1-5 and 7, the connecting member 30 includes a hollow main shaft 31, a hollow secondary shaft 32 with a circular cross section, and a first hollow conical pillar 33 with an inverted isosceles trapezoid longitudinal section, wherein the hollow main shaft 31, the hollow secondary shaft 32 and the first hollow conical pillar 33 are sequentially connected from top to bottom, and share a vertical central line, so that after the insertion section 13 is inserted from the upper portion of the hollow main shaft 31, the external thread section 14 is located in the first hollow conical pillar 33, and enters the external thread section 14 from the lower portion of the first hollow conical pillar 33 through the locking nut 40 to be in threaded connection with the external thread section 14, so as to connect and fix the connecting member 30 and the intramedullary cavity fixing member 10
Two first flat position grooves 34 are symmetrically arranged on the circumferential direction of the hollow secondary shaft 32 and are used for being matched with two symmetrical first clamping blocks 51 protruding on the upper portion of the osteotomy section 50 in the circumferential direction.
The beneficial effects of the above technical scheme are:
the connecting piece 30 is convenient to be in conical fit connection with the osteotomy segment 50, and the implantation stability is improved; meanwhile, the specific structure of the connecting element 30 makes the implantation thereof more stable while applying pressure.
EXAMPLE five
According to the novel femoral prosthesis of the fourth embodiment, as shown in fig. 5 and 7, a plurality of countersunk threaded holes 35 are formed in the circumferential direction of the hollow secondary shaft 32 and are inclined from top to bottom, so that the insertion ends of the fixing nails 70 penetrate out from the top end surface of the hollow secondary shaft 32 after being inserted from the lower part of the hollow secondary shaft 32 to abut against the hollow main shaft 31;
the first flat position groove 34 is formed between and connected with the two countersunk threaded holes 35.
In a specific implementation process, a side of the fixing nail 70 away from the nut thereof is provided with a smooth surface, and an end thereof away from the nut thereof is provided with an external thread structure adapted to the countersunk threaded hole 35.
The beneficial effects of the above technical scheme are:
the design of the fixing nail 70 and the adapted countersunk head threaded hole 35 enables the fixing nail 70 to be screwed into the countersunk head threaded hole 35 after a prestress value is applied to the femur in a compression mode, so that the stability of the connecting piece 30 and the femur is improved, and the stress value is ensured not to be changed due to violent movement of a person;
and the first flat position groove 34 is arranged at the position for facilitating the assembly of the prosthesis.
EXAMPLE six
According to the novel femoral prosthesis of the fourth embodiment, as shown in fig. 1 to 5, the connecting element 30 further includes a bushing 36 sleeved on the lower portion of the hollow main shaft 31, and a bottom end surface of the bushing 36 abuts against an upper end surface of the hollow secondary shaft 32;
two symmetrically-arranged positioning protrusions 37 are formed in the circumferential direction of the bushing 36, so that when the connecting element 30 is connected with the intramedullary canal fixing element 10, the osteotomy segment 50 and the femoral condyle 60, the positioning protrusions 37 correspond to the first flat position groove 34.
The beneficial effects of the above technical scheme are:
the position and the structural design of the bush 36 protect the hollow main shaft 31, and meanwhile, the positioning protrusion 37 on the bush 36 corresponds to the first flat position groove 34 when being assembled, so that the quick assembly is realized.
EXAMPLE seven
According to the novel femoral prosthesis of the sixth embodiment, as shown in fig. 7, the hollow main shaft 31 is composed of an upper section 31a, a middle section 31b and a lower section 31c which are integrally connected in sequence from top to bottom, and the upper section 31a, the middle section 31b and the lower section 31c are coaxial, and the outer diameter of the middle section 31b is larger than that of the upper section 31a and smaller than that of the lower section 31 c;
wherein, the bushing 36 is sleeved on the lower section 31 c.
The beneficial effects of the above technical scheme are:
the hollow main shaft 31 is designed in such a way that the insertion section 13 is sleeved inside and the intramedullary canal fixing member 10 is prevented from being pulled out of the connecting member 30 during movement.
Example eight
According to the novel femoral prosthesis of the fourth embodiment, as shown in fig. 1 and 4, the osteotomy segment 50 further comprises a first hollow taper sleeve 52 with an opening facing the connecting element 30, and a second hollow taper column 53 located at the lower part of the first hollow taper sleeve 52 and sharing a vertical central line with the first hollow taper sleeve 52, wherein the first hollow taper sleeve 52 is adapted to the first hollow taper column 33, and the first fixture block 51 is located at the upper part of the first hollow taper sleeve 52 and protrudes out of the upper edge of the first hollow taper sleeve 52;
the second hollow conical column 53 is adapted to a second hollow conical sleeve 61 arranged on the upper portion of the femoral condyle 60, and is used for the conical connection between the femoral condyle 60 and the osteotomy segment 50.
The beneficial effects of the above technical scheme are:
the specific structure design of the osteotomy segment 50 enables the connecting element 30 and the femoral condyle 60, which are connected with the osteotomy segment at the upper end and the lower end, to be in taper fit connection, so that the rapid assembly can be realized, and the time is saved.
Example nine
According to the novel femoral prosthesis of the fourth embodiment, as shown in fig. 1, two second fixture blocks 62 protruding from the upper edge of the femoral condyle 60 are symmetrically arranged on the upper portion of the femoral condyle 60 in the circumferential direction and are used for being matched with the second flat position groove 54 formed in the lower portion of the first hollow taper sleeve 52;
the second flat position groove 54 corresponds to the first latch 51.
The beneficial effects of the above technical scheme are:
the structural design of the femoral condyle 60 can meet the requirement of the degree of freedom of the affected part to a greater extent on one hand, and enhance the stability of prosthesis implantation on the other hand.
Example ten
According to the novel femoral prosthesis in the fourth embodiment, the surface of the hollow secondary shaft 32, which is in contact with the osteotomy surface, is coated with paint in a double-spraying manner of titanium spraying and Ha spraying.
Specifically, firstly, titanium is sprayed and coated on the surface of the titanium-coated titanium substrate, and then Ha is sprayed and coated on the surface of the titanium-coated titanium substrate.
The beneficial effects of the above technical scheme are:
in the spraying part and the spraying method, the external thread section 14 is positioned in the first hollow conical column 33 and enters the external thread section 14 from the lower part of the first hollow conical column 33 through the locking nut 40 to be in threaded connection, so that the connecting piece 30 and the medullary cavity fixing piece 10 are connected and fixed, the growth of sclerotin can be effectively promoted, and the implantation stability of the prosthesis is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. Novel femoral prosthesis, its characterized in that: comprises that
The intramedullary canal fixing piece (10) is provided with a plurality of pin holes (11) for the penetration of transverse pins (20) at the upper part, and the transverse pins (20) penetrate through cortical bone to fix the intramedullary canal fixing piece (10) in the intramedullary canal;
the lower part of the medullary cavity fixing piece (10) is inserted into the connecting piece (30) and then locked on the upper part in the connecting piece (30) through a locking nut (40) in a threaded mode;
an osteotomy segment (50) having an upper portion thereof in tapered engagement with a lower portion of the connector (30);
a femoral condyle (60) having an upper portion conically coupled to the lower portion of the osteotomy segment (50) and a lower portion for implantation in a knee joint.
2. The novel femoral prosthesis of claim 1, wherein: the intramedullary cavity fixing piece (10) further comprises a cylindrical anchor bolt (12) and an insertion section (13) positioned at the lower part of the anchor bolt (12), the anchor bolt (12) and the insertion section (13) are integrally formed, an external threaded section (14) is arranged at the lower part of the insertion section (13) and used for inserting the insertion section (13) into the connecting piece (30), and the locking nut (40) enters from the bottom of the connecting piece (30) to be in threaded connection with the external threaded section (14);
wherein, pinhole (11) set up in on crab-bolt (12), the one end of horizontal round pin (20) is followed pinhole (11) of crab-bolt (12) one side penetrate and follow pierce through the cortex bone after pinhole (11) of crab-bolt (12) opposite side are worn out, with crab-bolt (12) are fixed in the intramedullary canal.
3. The novel femoral prosthesis of claim 2, wherein: at least two groups of transverse pins (20) are arranged on the anchor bolt (12) along the transverse direction of the anchor bolt, at least two transverse pins (20) are arranged in each group of transverse pins (20) and are arranged at equal intervals along the longitudinal direction of the anchor bolt (12), and the adjacent transverse pins (20) on the transverse direction of the anchor bolt (12) are arranged in a staggered manner;
each transverse pin (20) corresponds to two pin holes (11) and is used for positioning the transverse pin (20) on the anchor bolt (12).
4. The novel femoral prosthesis of claim 2, wherein: the connecting piece (30) comprises a hollow main shaft (31), a hollow secondary shaft (32) with a circular cross section, and a first hollow conical column (33) with an inverted isosceles trapezoid longitudinal section, wherein the first hollow conical column (33) is in conical fit connection with the osteotomy section (50), the hollow main shaft (31), the hollow secondary shaft (32) and the first hollow conical column (33) are sequentially connected from top to bottom and share a vertical central line, and after the insertion section (13) is inserted from the upper part of the hollow main shaft (31), the outer thread section (14) is located in the first hollow conical column (33) and enters the outer thread section (14) from the lower part of the first hollow conical column (33) through the locking nut (40) for threaded connection, so that the connecting piece (30) is fixedly connected with the medullary cavity fixing piece (10);
two first flat position grooves (34) are symmetrically formed in the circumferential direction of the hollow secondary shaft (32) and are used for being matched with two symmetrical first clamping blocks (51) protruding in the circumferential direction of the upper portion of the osteotomy section (50).
5. The novel femoral prosthesis of claim 4, wherein: a plurality of countersunk threaded holes (35) which are obliquely arranged from top to bottom are formed in the circumferential direction of the hollow secondary shaft (32), so that the insertion end of a fixing nail (70) penetrates out from the top end face of the hollow secondary shaft (32) after being inserted from the lower part of the hollow secondary shaft (32) to abut against the hollow main shaft (31);
wherein, the first flat position groove (34) is provided with and connected with two countersunk head threaded holes (35)
In the meantime.
6. The novel femoral prosthesis of claim 4, wherein: the osteotomy segment (50) further comprises a first hollow taper sleeve (52) with an opening facing the connecting piece (30), the first hollow taper sleeve (52) is matched with the first hollow taper column (33), and the first fixture block (51) is located on the upper portion of the first hollow taper sleeve (52) and protrudes out of the upper edge of the first hollow taper sleeve (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164282.7U CN216090940U (en) | 2021-09-08 | 2021-09-08 | Novel femoral prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164282.7U CN216090940U (en) | 2021-09-08 | 2021-09-08 | Novel femoral prosthesis |
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| CN216090940U true CN216090940U (en) | 2022-03-22 |
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| CN202122164282.7U Active CN216090940U (en) | 2021-09-08 | 2021-09-08 | Novel femoral prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616389A (en) * | 2021-09-08 | 2021-11-09 | 河北春立航诺新材料科技有限公司 | Compression type prestress femoral prosthesis |
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2021
- 2021-09-08 CN CN202122164282.7U patent/CN216090940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616389A (en) * | 2021-09-08 | 2021-11-09 | 河北春立航诺新材料科技有限公司 | Compression type prestress femoral prosthesis |
| CN113616389B (en) * | 2021-09-08 | 2024-03-26 | 河北春立航诺新材料科技有限公司 | Compression type prestress femur prosthesis |
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Address after: 054700 east of Tengfei road and south of Xinde Road, Weixian high tech Industrial Development Zone, Xingtai City, Hebei Province Patentee after: Hebei Chunli hangnuo New Material Technology Co.,Ltd. Address before: 054700 Tengfei Road, high tech Industrial Development Zone, Wei County, Xingtai City, Hebei Province check the east side and the south side of Xinde road in the map Patentee before: Hebei Chunli hangnuo New Material Technology Co.,Ltd. |
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