CN219782855U - Implanted artificial limb connecting device - Google Patents
Implanted artificial limb connecting device Download PDFInfo
- Publication number
- CN219782855U CN219782855U CN202321026379.4U CN202321026379U CN219782855U CN 219782855 U CN219782855 U CN 219782855U CN 202321026379 U CN202321026379 U CN 202321026379U CN 219782855 U CN219782855 U CN 219782855U
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- China
- Prior art keywords
- connecting rod
- prosthesis
- skin
- connection device
- limb
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- 239000007943 implant Substances 0.000 claims abstract description 30
- 238000002513 implantation Methods 0.000 claims abstract description 16
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000011241 protective layer Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 208000015181 infectious disease Diseases 0.000 abstract description 5
- 230000028327 secretion Effects 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 210000003414 extremity Anatomy 0.000 description 27
- 210000004872 soft tissue Anatomy 0.000 description 7
- 238000007920 subcutaneous administration Methods 0.000 description 6
- 206010028851 Necrosis Diseases 0.000 description 5
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 5
- 230000017074 necrotic cell death Effects 0.000 description 5
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010883 osseointegration Methods 0.000 description 4
- 206010033675 panniculitis Diseases 0.000 description 4
- 210000004304 subcutaneous tissue Anatomy 0.000 description 4
- 206010003694 Atrophy Diseases 0.000 description 3
- 206010016654 Fibrosis Diseases 0.000 description 3
- 230000037444 atrophy Effects 0.000 description 3
- 230000004761 fibrosis Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 206010018910 Haemolysis Diseases 0.000 description 2
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- 230000004927 fusion Effects 0.000 description 2
- 230000008588 hemolysis Effects 0.000 description 2
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- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 206010018833 Haematocoele Diseases 0.000 description 1
- 208000005873 Hematocele Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 210000001185 bone marrow Anatomy 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004053 dental implant Substances 0.000 description 1
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- 238000005534 hematocrit Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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Landscapes
- Prostheses (AREA)
Abstract
The utility model belongs to the technical field of medical appliances, and particularly relates to an implantable artificial limb connecting device. The utility model comprises a prosthesis connector and a connecting rod, wherein the prosthesis connector is used for being implanted into a limb stump cavity, and the prosthesis connector is used for connecting a prosthesis to a limb stump of a limb stump through the connecting rod; the connecting rod comprises an implantation part for penetrating the skin of the implant body and an exposed part exposed outside the skin of the body, the implantation part is connected with the prosthesis connector, the exposed part is connected with the prosthesis, the connecting rod is a conical structure which is reduced from the tail end of the bone to the outside of the skin, a plurality of step-shaped structures are arranged on the connecting rod at intervals along the axial direction of the connecting rod, and a right angle part of each step-shaped structure is provided with a plurality of suture holes; the surface of the connecting rod is provided with a plurality of longitudinal stripe bulges which are arranged at intervals. The utility model reduces the risk of infection; avoiding secretion accumulation and stinking; the stability of the connecting device is enhanced.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to an implantable artificial limb connecting device.
Background
The concept of a bone-connecting prosthesis originated in the 70 s of the 20 th century, and the professor Branemark in sweden was inspired by the dental implant principle and invented a bone-implanted prosthesis by reference to the artificial joint technique. The bone connecting artificial limb is a novel artificial limb which is implanted into the bone marrow cavity of the limb stump of an amputee and extends out of the body through muscle skin, solves the defect of connecting the traditional artificial limb with the limb stump end, and accords with the principle of human biomechanics.
Over the last decade, related studies of even-bone prostheses have been ongoing in many countries of the world. In Sweden, branemark et al have conducted in vivo experimental studies on biomechanical properties of a bone-linked prosthesis, and have conducted relevant reports on osseointegration and stress distribution of implants in the tibia of dogs; hagberg et al conducted long-term follow-up investigation on users of a coupled prosthesis, and conducted observation studies mainly on comfort, flexibility and problems of the prosthesis, and the results showed that patients using coupled prostheses were improved to different extents in all the above-mentioned aspects. In contrast, the research direction in japan is based on the material of the endosteal implant, and the Kusakabe et al HAs shown that the novel Hydroxyapatite (HA) coating with a multi-layer network structure is significantly superior to the conventional granular structure coating in biomechanical and osseointegration ability after the Hydroxyapatite (HA) coating is added to the surface of the implant. Preliminary research results carried out by university of Sichuan in association with Qinghua university in fifteen days of China show that the novel technology of compounding the biological activation of the titanium surface with the hydroxyapatite coating can obviously improve the osseointegration strength of the implant. In the aspect of the intraosseous implant, the national biological material engineering center of Sichuan university provides a design of a multi-section intraosseous implant aiming at the problem of stress shielding of the conventional one-section structure intraosseous implant so as to reduce the degree of stress shielding. Meanwhile, the model is built by using human femur CT data, and the multi-section type intraosseous implant is evaluated by using finite element analysis and comparing with a one-section type structure. In the aspect of the external artificial limb, the university of Qinghua invents a multiple artificial limb protection device which can protect the intra-osseous implant and the residual bone when the artificial limb is subjected to excessive load. With the progress of scientific technology, the technology of the lower limb even bone artificial limb is gradually perfected, but the technology is still very important in clinical application.
Currently, research efforts on even bone prostheses remain focused on several aspects: (1) the percutaneous biological sealing problem is one of the reasons for directly restricting the popularization of the artificial bone; (2) the problem of mechanical compatibility of the implant in bone is the reason for aseptic loosening of the implant, which is closely related to the material property and structural design of the implant; (3) biocompatibility of implant materials and studies related to osseointegration ability. Therefore, the even-bone artificial limb is further studied, and a long path is needed for further improving the functions.
The traditional implanted artificial limb connecting device is in a columnar structure, the contact position between the implanted artificial limb connecting device and the stump is easy to cause skin edge inversion (due to atrophy, necrosis and fibrosis of subcutaneous soft tissues) of a skin port, the skin edge inversion can cause stump infection, and secretion is easy to accumulate at the position to cause stink.
Disclosure of Invention
The present utility model has been made to solve the above problems, and provides an implantable prosthesis connection device.
The utility model is realized by adopting the following technical scheme: an implantable prosthesis coupling device comprising a prosthesis coupler for implantation into a stump cavity of a limb and a coupling rod, the prosthesis coupler coupling the prosthesis to a stump of the limb through the coupling rod;
the connecting rod comprises an implantation part for penetrating the skin of the implant body and an exposed part exposed outside the skin of the body, the implantation part is connected with the prosthesis connector, the exposed part is connected with the prosthesis, the connecting rod is of a conical structure which is reduced from the tail end of the bone to the outside of the skin, a plurality of step-shaped structures are arranged on the connecting rod at intervals along the axial direction of the connecting rod, and a right angle part of each step-shaped structure is provided with a plurality of suture holes;
the surface of the connecting rod is provided with a plurality of longitudinal stripe bulges which are arranged at intervals.
Further, a protective layer is coated on the surface of the implantation part.
Further, the tail end of the limb stump is sleeved with gradient pressure socks.
Further, the gradient pressure sock applies a pressure in the range of 23-32mmhg and the pressure decreases progressively from the distal end to the proximal end of the limb.
Further, the plurality of step structures on the implantation part are arranged at equal intervals; the distance between two adjacent step-shaped structures is 5mm.
Further, a plurality of the sewing holes are uniformly spaced along the circumference of the step-shaped structure; the included angle between two adjacent suture holes is 30 degrees.
Further, the longitudinal stripe bulges are equally arranged along the circumferential direction of the implantation part; the included angle between two adjacent longitudinal stripe bulges is 60 degrees.
Further, the diameter of the suture hole is 1-1.5mm, and the depth is 2mm.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the connecting rod is provided with a plurality of step structures to prevent the skin port skin edge from being turned inwards caused by the atrophy, necrosis and fibrosis of subcutaneous soft tissues, so that the infection risk is reduced; in addition, the growth contact area of subcutaneous soft tissue at the skin edge and the implant is increased, the probability of the mutual combination of the subcutaneous soft tissue at the skin edge and the implant is improved, and the biological fusion and integration are facilitated, so that secretion accumulation and odor are avoided;
according to the utility model, the longitudinal stripe bulges are arranged on the connecting rod, so that the rotation of skin and subcutaneous tissues is prevented, and the stability of the connecting device is enhanced;
the connecting rod is provided with the suture holes, so that tissues can be sutured and fixed in operation, and the device is firmly connected with the limb stump;
the gradient pressure socks are sleeved at the ends of the limb stumps, so that incision scar softening is promoted; plastic limb stump appearance; the physical fit of the skin margin and the subcutaneous to the implant body is increased, and particularly, the infection necrosis and unfused caused by the hematocrit of the implant body and the subcutaneous tissue are prevented in early stage.
The surface of the implantation part is coated with a protective layer; the protective layer is diamond-like carbon film coating (DLC), has high wear resistance, high hardness and good biocompatibility, is used as a carbon material, is relatively stable and nearly inert in physiological environment, and can not cause coagulation and hemolysis reaction.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the connecting rod of the present utility model;
in the figure: 1-prosthesis connector, 2-limb stump, 3-connecting rod, 3.1-implant, 3.2-exposure, 4-step structure, 5-suture hole, 6-longitudinal stripe protrusion.
Description of the embodiments
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which is to be read in light of the specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
Referring to fig. 1 to 2, the present utility model provides a technical solution: an implantable prosthesis connection device comprises a prosthesis connector 1 for implantation into a limb stump cavity and a connecting rod 3, wherein the prosthesis connector 1 connects a prosthesis to a limb stump 2 of a limb stump through the connecting rod 3;
the connecting rod 3 comprises an implant part 3.1 for penetrating the skin of the implant body and an exposed part 3.2 exposed outside the body for penetrating the skin, the implant part 3.1 is connected with the prosthesis connector 1, the exposed part 3.2 is connected with the prosthesis, the connecting rod 3 is of a conical structure which is reduced from the tail end of a bone to the outside of the skin, a plurality of step structures 4 are arranged on the connecting rod 3 along the axial direction at intervals, the step structures 4 prevent the skin port skin edge from being turned inwards caused by atrophy, necrosis and fibrosis of the soft tissue under the skin, the growth contact area of the soft tissue under the skin edge and the implant body is increased, the probability of the mutual combination of the soft tissue under the skin edge and the implant body is improved, and the biological fusion and integration are facilitated; a plurality of stitching holes 5 are arranged at the right angle of each step-shaped structure 4;
the surface of the connecting rod 3 is provided with a plurality of longitudinal stripe bulges 6 which are arranged at intervals, and the longitudinal stripe bulges 6 prevent the rotation of skin and subcutaneous tissues, so that the stability is enhanced.
The surface of the implantation part 3.1 is coated with a protective layer; the protective layer is diamond-like carbon film coating (DLC), has high wear resistance, high hardness and good biocompatibility, is used as a carbon material, is relatively stable and nearly inert in physiological environment, and can not cause coagulation and hemolysis reaction.
The end of the limb stump 2 is sleeved with a gradient pressure sock, the first promotion of incision scar softening and the second plastic limb stump appearance, and the third increase of the physical fit of the skin margin and the subcutaneous to the implant, especially early prevention of infection necrosis and unfused caused by the implant and subcutaneous tissue hematocele.
The gradient compression sock applies a pressure in the range of 23-32mmhg and the pressure decreases progressively from the distal end to the proximal end of the limb.
The plurality of step structures 4 on the implantation part 3.1 are arranged at equal intervals; the distance between two adjacent step structures 4 is 5mm.
The suture holes 5 are equally spaced along the circumference of the step-shaped structure 4; the included angle between two adjacent suture holes 5 is 30 degrees.
The longitudinal stripe bulges 6 are equally arranged along the circumferential direction of the implantation part 3.1; the included angle between two adjacent longitudinal stripe bulges 6 is 60 degrees.
The diameter of the suture hole 5 is 1-1.5mm, and the depth is 2mm, so that the suture hole is convenient for suture and fixation of tissues in operation.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (8)
1. An implantable prosthesis coupling device, characterized by: comprises a prosthesis connector (1) and a connecting rod (3) which are used for being implanted into a limb stump cavity, wherein the prosthesis connector (1) connects a prosthesis to a limb stump (2) of the limb stump through the connecting rod (3); the connecting rod (3) comprises an implant part (3.1) for penetrating the skin of the implant body and an exposed part (3.2) exposed outside the skin of the body, the implant part (3.1) is connected with the prosthesis connector (1), the exposed part (3.2) is connected with the prosthesis, the connecting rod (3) is of a conical structure which is reduced from the tail end of the bone to the skin, a plurality of step-shaped structures (4) are arranged on the connecting rod (3) along the axial direction at intervals, and a plurality of suture holes (5) are formed at right angles of each step-shaped structure (4); the surface of the connecting rod (3) is provided with a plurality of longitudinal stripe bulges (6) which are arranged at intervals.
2. An implantable prosthesis connection device according to claim 1, wherein: the surface of the implantation part (3.1) is coated with a protective layer.
3. An implantable prosthesis connection device according to claim 1 or 2, wherein: the tail end of the limb stump (2) is sleeved with gradient pressure socks.
4. An implantable prosthesis connection device according to claim 3, wherein: the gradient compression sock applies a pressure in the range of 23-32mmhg and the pressure decreases progressively from the distal end to the proximal end of the limb.
5. An implantable prosthesis connection device according to claim 4, wherein: the plurality of step structures (4) on the implantation part (3.1) are arranged at equal intervals; the distance between two adjacent step-shaped structures (4) is 5mm.
6. An implantable prosthesis connection device according to claim 4, wherein: the suture holes (5) are equally spaced along the circumference of the step-shaped structure (4); the included angle between two adjacent suture holes (5) is 30 degrees.
7. An implantable prosthesis connection device according to claim 4, wherein: the longitudinal stripe bulges (6) are equally arranged along the circumferential direction of the implantation part (3.1); the included angle between two adjacent longitudinal stripe bulges (6) is 60 degrees.
8. An implantable prosthesis connection device according to claim 4, wherein: the diameter of the suture hole (5) is 1-1.5mm, and the depth is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321026379.4U CN219782855U (en) | 2023-05-04 | 2023-05-04 | Implanted artificial limb connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321026379.4U CN219782855U (en) | 2023-05-04 | 2023-05-04 | Implanted artificial limb connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219782855U true CN219782855U (en) | 2023-10-03 |
Family
ID=88152190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321026379.4U Active CN219782855U (en) | 2023-05-04 | 2023-05-04 | Implanted artificial limb connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219782855U (en) |
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2023
- 2023-05-04 CN CN202321026379.4U patent/CN219782855U/en active Active
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