CN107518961A - Prosthesis and prosthesis system - Google Patents
Prosthesis and prosthesis system Download PDFInfo
- Publication number
- CN107518961A CN107518961A CN201710714216.8A CN201710714216A CN107518961A CN 107518961 A CN107518961 A CN 107518961A CN 201710714216 A CN201710714216 A CN 201710714216A CN 107518961 A CN107518961 A CN 107518961A
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- China
- Prior art keywords
- shell
- prosthese
- extending column
- distal end
- limited post
- Prior art date
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Links
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- 230000003068 static effect Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 8
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 5
- 239000011354 acetal resin Substances 0.000 claims description 4
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
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- 239000000155 melt Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 210000000689 upper leg Anatomy 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 210000003414 extremity Anatomy 0.000 description 5
- 229930182556 Polyacetal Natural products 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 239000000560 biocompatible material Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 210000002414 leg Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002745 epiphysis Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 201000008968 osteosarcoma Diseases 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 206010039722 scoliosis Diseases 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30075—Properties of materials and coating materials swellable, e.g. when wetted
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a prosthesis and a prosthesis system, wherein the prosthesis comprises a shell, a limiting column, an extending column and an elastic part, wherein: the extension column is accommodated in the limit column and extends towards the far end of the shell, the extension column comprises a body and at least one boss positioned at the near end of the body, and the boss extends outwards along the radial direction of the body and extends into the limit column; when an alternating magnetic field is applied to the outer side of the shell, the boss of the extension column generates heat, so that the position of the limiting column in contact with the boss is melted, and the elastic part pushes the extension column to move along the axial direction of the limiting column and towards the far end of the shell. The prosthesis and the prosthesis system are stable and controllable in the prolonging process, only pushed by internal spring force without operation, harmless to human body, simple in design structure and capable of overcoming the problem of poor safety of the prosthesis in the prior art.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of prosthese and prosthesis system.
Background technology
Children with tumour, the especially distal femur with high incidence and proximal tibia osteosarcoma, early stage cut
Limb treatment is slowly substituted by limb salvage treatment, needs to install an interior prosthese after infant ocal resection, traditional guarantor's limb is controlled
Treatment means mainly have autologous bone transplanting, allogenic bone transplantation, common prosthetic replacement.But with the growth of infant, its healthy side
Limbs can be elongated with body development, and be implanted into the side of prosthese then because epiphysis destruction can not normal growth, this will lead
Cause infant both sides leg length discrepancy problem.Not only profile is ugly for this, and is made troubles to the life of infant, can also cause pelvis
A series of complication such as inclination, scoliosis, the joint caused infringement of improper stress.
To solve the problems, such as children's leg length discrepancy after Limb preservation, the prosthese that extends common at present is divided into two classes：One kind is
Invasive extends prosthese, although can extend, design extension mechanism must row second operation could complete, if desired for
Surgical exposure prosthese, internal structure formula prosthese is turned with specific purpose tool, such prosthese need to perform the operation extension repeatedly, not only increase infant
Postoperative complications, waste time and energy, and also increase financial burden.Another kind of prosthese is such as a kind of for that can extend prosthese automatically
There is the prosthese of in-body power source, extracorporeal power source, the design structure of this kind of prosthese is complicated, and crash rate is high, and service life is limited, extends length
Degree is uncertain, and external power supply connection in vivo will be by hypodermis, and this will also result in some complication, and pacify in infant body
Supply unit is filled, this can not ensure the reliability of prosthese, easily fail, and design is unreasonable.
Therefore, it is necessary to design that a kind of safety is noninvasive to extend prosthese and prosthesis system.
The content of the invention
It is an object of the invention to provide a kind of prosthese and prosthesis system, extends unsafe ask to solve existing prosthese
Topic.
In order to solve the above technical problems, the present invention provides a kind of prosthese, the prosthese include shell, limited post, extending column,
Tumbler and elastic component are limited, wherein：
The shell has the first open end positioned at distal end and the first closing end positioned at near-end；
The limited post is placed in the shell, and is configured as at least keeping axial geo-stationary with the shell；
The extending column is placed in the limited post, and is extended to the distal end of the shell, and the extending column includes one
Body and at least one boss for being located at body proximal end, the boss extends radially outwardly along the body and stretches into described spacing
Post；
The limit tumbler, is contained in the shell, and motion is rotated for limiting the extending column；
The elastic component, to provide elastic force to the extending column, the extending column is set to be moved to the distal end of the shell
It is dynamic；
When the shell outside apply an alternating magnetic field when, the extending column boss heating, make the limited post with
The position of boss contact is melted, so that axial direction of the extending column along the limited post described in the resilient element urges, to described
Shell distal end is mobile.
Optionally, in described prosthese, the distal end of at least described extending column body is prism, the limit tumbler bag
Limit Rotational Cylindrical is included, the limit Rotational Cylindrical is located at the distal end of the shell, and is configured as at least keeping circumferentially opposed quiet with shell
Only, the limit Rotational Cylindrical is provided with first inner chamber, and at least partly described first inner chamber matches with the extending column distal end, with limit
Make the extending column and rotate motion.
Optionally, in described prosthese, the limit tumbler also includes multiple first alignment pins, and the limit Rotational Cylindrical is adjacent
The limited post is connected to close to one end of first open end, the outer wall of the limit Rotational Cylindrical and the inwall of the shell it
Between be provided with multiple axially extending pin-and-holes, each first alignment pin is inserted in a pin-and-hole so that limit Rotational Cylindrical with
Shell keeps circumferentially opposed static.
Optionally, in described prosthese, the distal end outer wall of the extending column body circumferentially has multiple axially extending
Groove, it is described limit tumbler include multiple second alignment pins, second alignment pin is fixed on the inwall of the shell, and footpath
To extending inwards, it is contained in the axial notch.
Optionally, in described prosthese, shell distal end inwall circumferentially has multiple axially extending grooves, institute
Stating limit tumbler includes multiple second alignment pins, and second alignment pin is fixed on the outer wall of the extending column distal end, and radially
Stretch out, be contained in an axial notch of the shell.
Optionally, in described prosthese, the outer wall surface of the body of the extending column close to the distal end of the boss has
There are multiple axially extending insertion grooves along the extending column.
Optionally, in described prosthese, the material of the limited post is resin, and the volume melt-flow of the resin is fast
Rate is 20~50cm3/ 10min, modulus of elasticity are 2.5~5GPa.
Optionally, in described prosthese, the resin is polyacetals or polyvinyl resin.
Optionally, in described prosthese, the resin is dimethoxym ethane resin or acetal resin.
Optionally, in described prosthese, the extending column is the ducted body with second inner chamber, and the extending column
Distal end is provided with the second closing end；
The prosthese also includes inner prop, and the inner prop includes extension body and base, and the base of the inner prop is adjacent to institute
The first closing end of shell is stated, the extension body is placed in the second inner chamber of the extending column, and to second envelope
Close end direction extension；
The elastic component is a compression spring, is socketed on the extension body, and the near-end of the elastic component with it is described
Base abuts, the distal end of the elastic component and the second closing end abutment.
Optionally, in described prosthese, the inner prop also includes magnetic conductance part, and the magnetic conductance portions house is in described interior
In the extension body of post, the relative permeability of the magnetic conductance part is 100~10000.
Optionally, in described prosthese, the magnetic conductance component materials are permanent-magnet ferrite.
Optionally, in described prosthese, the material of the outer wall of at least described extension body is biocompatible materials.
Optionally, in described prosthese, the outer wall of the inwall of the elastic component and the inner prop coordinates for gap, described
Second inwall of the outer wall of elastic component and the extending column coordinates for gap.
Optionally, in described prosthese, the prosthese also includes shell cap, and the shell cap is located at first open end
Near, the shell cap is to be detachably connected with the shell, so that the limit tumbler, limited post are kept relative to the shell
Axially opposing static, the shell cap has the 3rd inner chamber of insertion, and the extending column is extended to described by the 3rd inner chamber
The outside of shell.
Optionally, in described prosthese, the first closing end of the shell has the hole of insertion.
The present invention also provides a kind of prosthesis system, and the prosthesis system includes the prosthese and alternation magnetic described in any of the above-described
Field generating means, the alternating magnetic field generating means provide alternating magnetic field.
Optionally, in described prosthesis system, the alternating magnetic field generating means includes ring body and generating means main frame,
The generating means main frame is used to control alternating magnetic field, there is provided the prosthese is placed in ring body during alternating magnetic field.
In prosthese provided by the invention and prosthesis system, by being externally provided with an alternating magnetic field in outer side, i.e. human body,
The position that limited post contacts with extending column is melted, so that under the limitation of limit tumbler, the elastomer promotes extending column along institute
The axial direction of limited post is stated, it is mobile to shell distal end, i.e., to prosthese Outer elongate.In this way, it is stably and controllable during extending, only
Promoted using internal spring force, without operation, harmless, design structure is simple, and extending length can be according to alternation magnetic
Action time, FREQUENCY CONTROL determine, the problem of overcoming prosthese security difference of the prior art.
Specifically, the extending column includes body and the boss positioned at body proximal end, boss along the body radially outward
Extend and stretch into limited post, limited post can be made to be fixed in normal conditions with extending column, will not arbitrarily move；Make in alternating magnetic field
Under, the boss heating, melt the limited post with boss contact portion, extending column is overcome the resistance of limited post in elastic component
In the presence of it is mobile to distal end.
In a preferred embodiment, outer wall surface of the body of the extending column close to the boss distal end has more
The individual axially extending insertion groove along the extending column, so that in the presence of outside alternating magnetic field, projection section quickly produces
Heat amount, groove segment then because the magnetic circuit loop for producing vortex is cut off, do not produce heat, to avoid prosthese remainder from being heated
Damage.
In a preferred embodiment, the outer wall surface of the body of the extending column, at least distal end is prism-shaped, described
Outside limit Rotational Cylindrical of the limit tumbler including being located at shell distal end, the first inner chamber of the limit Rotational Cylindrical and the distal end of the extending column
Wall shape matches.The opposite face of the outer wall of limit Rotational Cylindrical described further and the inwall of the shell has multiple axially extending
Pin-and-hole, each first alignment pin is inserted in a pin-and-hole, so that limit Rotational Cylindrical and shell holding are circumferentially opposed quiet
Only.Therefore, the extending column and shell keep circumferentially opposed and static will not arbitrarily rotated.In another embodiment, it is described
The distal end outer wall of extending column body circumferentially has multiple axially extending grooves, and the limit tumbler includes the multiple second positioning
Pin, second alignment pin is fixed on the inwall of the shell, and extends radially inward, and is contained in the axial notch.Or
Person, shell distal end inwall circumferentially have multiple axially extending grooves, and the limit tumbler includes the multiple second positioning
Pin, second alignment pin is fixed on the outer wall of the extending column distal end, and extends radially outwardly, and is contained in the one of the shell
In axial notch.Equally, the extending column keeps circumferentially opposed static with shell.
In a preferred embodiment, the material of the limited post is that melt volume-flow rate is 20~50cm3/
10min, modulus of elasticity are 2.5~5GPa resin, preferably polyacetal resin or polyvinyl resin, more preferably dimethoxym ethane
Resin or acetal resin.Above-mentioned resin material, enough mechanical properties can be provided when prosthese usually uses, to overcome elasticity
Part can provide excellent mobility when prosthese needs to be extended, reduce the resistance to extending column to the elastic force of extending column.
In a preferred embodiment, prosthese also includes the inner prop being contained in the extending column, and the inner prop includes
There is magnetic conductance part, the relative permeability of the magnetic conductance part is 100~10000, it is preferable that the material of the magnetic conductance part is permanent magnetism
Ferrite.During extension, under outside action of alternating magnetic field, magnetic conductance part can further enhance the field strength of alternating magnetic field,
It is more efficiently promoting magnetic energy and is converted into electric energy, be further converted into heat energy, can so greatly improves the boss of extending column
The partial efficiency of heating surface, so as to shorten the time of action of alternating magnetic field, the agility of extension is improved, ensure efficient extension machine
System.
Brief description of the drawings
Fig. 1 is the prosthese overall schematic of one embodiment of the invention；
Fig. 2 is an axial cross-sectional views of the prosthese of one embodiment of the invention；
Fig. 3 is the prosthese extending column and inner prop assembling schematic diagram of one embodiment of the invention；
Fig. 4 is another axial cross-sectional views of the prosthese of one embodiment of the invention；
Shown in figure：10- shells；11- holes；21- limited posts；22- extending columns；221- boss；222- grooves；23- inner props；
24- limits Rotational Cylindrical；30- elastic components；The alignment pins of 41- first；50- shell caps；60- femurs are embedded in section；70- tibial prosthesis；81- rings
Body；82- generating means main frames.
Embodiment
Prosthese proposed by the present invention and prosthesis system are described in further detail below in conjunction with the drawings and specific embodiments.
According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that accompanying drawing is using very
Simplified form and non-accurately ratio is used, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
Described in the present invention " distal end ", " distal side " refer to prosthese close to the side of bearing of trend；Accordingly, it is " near
End ", " nearside " are the sides relative with " distal end ", " distal side ".
The core concept of the present invention is to provide a kind of prosthese and prosthesis system, dangerous to solve existing prosthese extension
The problem of.
To realize above-mentioned thought, the invention provides a kind of prosthese and prosthesis system, the prosthese includes shell, spacing
Post, extending column, limit tumbler and elastic component, wherein：The shell has positioned at the first open end of distal end and positioned at near-end
First closing end；The limited post is placed in the shell, and is configured as at least keeping axial phase with the shell
To static；The extending column is placed in the limited post, and is extended to the distal end of the shell, and the extending column includes one
Body and at least one boss for being located at body proximal end, the boss extend radially outwardly along the body and stretch into the limited post；
The limit tumbler, is contained in the shell, and motion is rotated for limiting the extending column；The elastic component, to
Elastic force is provided to the extending column, the extending column is moved to the distal end of the shell；When the outside of the shell applies
During one alternating magnetic field, the boss heating of the extending column, melt the position that the limited post contacts with the boss, so that institute
Axial direction of the extending column described in resilient element urges along the limited post is stated, it is mobile to shell distal end.
In prosthese provided by the invention and prosthesis system, by being externally provided with an alternating magnetic field in outer side, i.e. human body,
Alternating magnetic field is formed by an alternating magnetic field generating means, and alternating magnetic field generating means is the triggering that the prosthese of the present invention extends
Device, alternating magnetic field form vortex in the projection section of extending column, and heat caused by vortex makes the limited post be connect with the boss
Tactile position is melted, so that the elastic component 30 promotes axial direction of the extending column along the limited post, to the shell
Distal end movement, i.e., it is stably and controllable during extension to prosthese Outer elongate, only promoted using internal spring force, without
Operation, harmless, design structure is simple.
It is a kind of prosthese for being used to extend femur in following embodiments, it is not intended that the prosthese of the present invention can only be applied
In the prosthese for extending femur, it can also be applied to extend the prosthese of shin bone, the prosthese for extending ulna etc..As shown in figure 1, this hair
Bright embodiment provides a kind of prosthese, and the prosthese includes shell 10, limited post 21, extending column 22, limit Rotational Cylindrical 24 and elasticity
Part 30.Wherein：The distal end of the shell 10 has one first opening, and near-end has the first closing end；The limited post 21 holds
It is placed in the shell 10, and is configured as at least keeping axial geo-stationary with the shell, limited post 21 is used for extension
Post 22 carries out spacing；The limited post 21 is hollow columnar structures, and the extending column 22 is placed in the limited post 21, and to
The distal outer extension of the shell, the extending column includes a body and at least one is located at the boss of body proximal end, described convex
Platform extends radially outwardly along the body and stretches into the limited post 21, and it relative to shell 10 is extensible portion that extending column 22, which is,
Point, it releases limited post 21 to the spacing of its using the heating of projection section, is extended with realizing；The limit tumbler, is contained in
In the shell, motion is rotated for limiting the extending column；The elastic component 30 provides elastic force to the extending column,
When the outside of shell 10 has an alternating magnetic field, the boss of the limited post 21 and the junction of the extending column 22 are melted, with
The elastic component 30 is promoted the extending column 22, axially the shell distal end is moved along the limited post.The shell 10 is
The femur box part that can extend in femoral prosthesis, and the first closing end of shell 10 is fabricated to femur pass in the implementation case
Section, connect tibial prosthesis 70.Extending column connection femur insertion section 60, it can promote the change of femur length when extending.
Specifically, in described prosthese, the extending column 22 includes body and the boss 221 positioned at body proximal end, institute
It is the part that limited post 21 contacts with the extending column 22 to state boss 221, extending column 22 is carried out for limited post 21 spacing
Key point.From coming from the angle shown in Fig. 1, the boss extends radially outwardly from body, and gos deep into the limited post.Should
Understand, " radially extending " here is unable to narrow sense and thinks that the boss can only prolong to extend perpendicular to body axially direction, and answers
The boss that is interpreted as of broad sense is not in axial direction to extend.In addition, the in order that contact site of limited post 21 and boss 221
During thawing, boss 221 can smoothly be moved to target location, while can have fully usually, between limited post 21 and boss 221
Contact to realize limited post 1 to the part supporting role of boss 221, share the pressure of elastic component 30, boss 221 is designed to three
It is angular, preferably right angled triangle.From coming from the angle shown in Fig. 2, in order that hair of the boss 221 under action of alternating magnetic field
Heat and uniform force, the shape of cross section of at least part boss 221 is preferably circular, but is not limited to circle, as long as boss profile
Pattern curve be the continuous curve of second dervative.In addition, in order that extending column 22 move when, limited post 21 will not hinder
It is moved, and except boss is connected with the limited post 21, the inwall of the outer wall and the limited post 21 of the body of extending column 22 is
Gap coordinates.
Further, as shown in figure 1, in described prosthese, outer wall table of the body of extending column 22 close to boss 221
Face has multiple axially extending grooves 222 along extending column 22, so that in the presence of outside alternating magnetic field, boss 221
It is point quick to produce heat, then because partial loop that magnetic field is passed through or the cut-out of whole loop at groove 222, it is impossible to produce vortex because
Without producing heat, caused heat concentrates on projection section, plays the work to the remainder of extending column 22 or even prosthese protection
With.It is arranged in it is preferred that the groove 222 is axially uniform on body.Wherein, extending column 22 is hollow circular cylinder, and groove 222 is
Engraved structure.Quantity, the size of groove 222 of groove 222, can influence targeting heating effect and extending column 22 it is strong
Degree, the quantity of groove 222 is too many, axial distance is oversize, influences the mechanical property of the extending column 22.Therefore, the number of groove 222
Amount, axial distance depend on the material of extending column 22 and the fuel factor effect of boss heating.
Further, in described prosthese, the material of the limited post 21 is resin, the melt volume of described resin
Flow rate (MVR) is 20~50cm3/ 10min (testing standard ISO1133), modulus of elasticity are 2500-5000MPa (test marks
Quasi- ISO527-1, ISO527-2), to ensure that the resin has enough strengths to overcome elasticity of the elastomer to extending column
Power, ensure that the resin has enough mobility after heated again.It is preferred that the resin is polyacetal resin
(acetalresin), polyvinyl resin (polyethyleneresin), more preferably dimethoxym ethane (polyformaldehyde)
Or acetal (polyacetaldehyde).Polyacetal resin can have certain stream when heated with fast melt after thawing
Dynamic property, when elastic component 30 promotes the movement of boss 221, because the mobility of the polyacetal resin after being heated can be reduced to boss
221 resistance, when stopping heated, boss 221 can be timely and effectively fixed again, and further fix extending column 22.
In the present invention, realize that axially opposing static method has no particular limits between the limited post 21 and shell 10, Ke Yiwei
Connect and fix, riveting is fixed, or assembling stress is fixed.The inwall of the outer wall of the limited post 21 and the shell 10 it
Between can be gap coordinate.
In order that the extending column can not arbitrarily rotate around axis, it can only move axially, the prosthese is additionally provided with limit and turned
Moving part.In the present embodiment, the limit tumbler includes limit Rotational Cylindrical 24.The limit Rotational Cylindrical is located at the distal end of the shell,
And be configured as at least keeping circumferentially opposed static with shell, the limit Rotational Cylindrical is provided with first inner chamber.The first inner chamber
Shape is at least partially prismatic., it is clear that prismatic angle number can be any natural number more than 2, e.g. triangle here
Shape, quadrangle, pentagon, hexagon, hexagon etc..The extending column 22 by it is described limit the first inner chamber of Rotational Cylindrical 24, and to
Distal end extension.The extending column body distal end is at least partly shaped as prismatic, and body distal end should be with the first inner chamber
Match.For example, as shown in figure 4, the first inner chamber is octagonal, the distal end of extending column 22 is also octagonal, and in first
The size of chamber is suitable with the distal end of extending column 22.In this way, the extending column 22 can not rotate relative to limit Rotational Cylindrical 24.Enter one
Step, the inwall of outer wall and the shell 10 of the limit Rotational Cylindrical 24 match, the outer wall for limiting Rotational Cylindrical 24 with it is described
There are multiple pin-and-holes between the inwall of shell 10, such as there are 4 pin-and-holes being axially evenly arranged as shown in Figure 4.The number of pin-and-hole
Amount can also basis be actually needed further adjustment.Each first alignment pin 41 is inserted in a pin-and-hole.It is described to prolong
The distal end outer wall surface for stretching the body of post 22 is prismatic, the inwall and the extending column 22 of the first inner chamber of the limit Rotational Cylindrical 24
Outer wall shape match, it is described limit Rotational Cylindrical 24 keep circumferentially opposed static with shell 10, can not be relative with this extending column 22
Arbitrarily rotated in shell 10.
As shown in figure 1, in described prosthese, the extending column 22 is the ducted body with second inner chamber, and described is prolonged
The distal end for stretching post is provided with the second closing end.The prosthese also includes inner prop 23, wherein：Inner prop 23 includes extension body and bottom
Seat, the base of the inner prop 23 are adjacent to the first closing end of the shell, and the extension body of the inner prop 23 is placed in
The second inner chamber of the extending column 22, and extend to the described second closing end direction.At least described extension body of inner prop 23
Outer wall materials are biocompatible materials.It is preferred that from polyetheretherketonematerials materials, polyetheretherketonematerials materials have good bio-compatible
Property, possesses the ability of resist chemical.As shown in Figure 1,3, in described prosthese, the elastic component is compression spring, socket
On the extension body, the base of the near-end of the elastic component 30 and the inner prop 23 abuts, the distal end of the elastic component 30
End abutment is closed with the second of the extending column 22.The pressure and described first that the base of the inner prop 23 passes through elastic component 30
It is close together to close end.The outer wall of the inwall of the elastic component 30 and the inner prop 23 coordinates for gap, the elastic component 30
The inwall of outer wall and the extending column 22 be gap cooperation so that elastic component 30 can freely stretch.
As shown in Figure 1,3, the AB sections refer to the length of the extension body of inner prop 23, and CF sections refer in the second of extending column 22
The depth of chamber, the extension body that AF sections refer to inner prop 23 are deep into the second inner chamber length of extending column 22.Preferably, AB segment length etc.
In CF segment length, i.e. the extension body length of inner prop 23 is equal to the depth of the second inner chamber of the inwall of extending column 22.In addition, the limit
The axial length of position post 21 should be less than the drift of stage clip 30, be achieved in the life cycle of whole prosthese, described
Stage clip 30 can impose elastic force to extending column 22.In this way, when the extension body of inner prop 23 fully penetrates into extending column 22
Second inner chamber, when AB sections overlap with CF sections, elastic component 30 possesses the elastic force for having maximum.With, extending column 22 is mobile to distal end,
The elastic force that stage clip 30 provides reduces but still can overcome the resistance of locating part 21 after thawing.
Further, inner prop 23 also includes magnetic conductance part, the magnetic conductance portions house in the extension body of the inner prop,
The relative permeability of the magnetic conductance part is 100~10000, and the material of preferably described magnetic conductance part is permanent-magnet ferrite.In vacation
During body extension, under outside action of alternating magnetic field, magnetic conductance part can further enhance the field strength of alternating magnetic field, more efficient
Promotion magnetic energy be converted into electric energy, be further converted into heat energy, can so greatly improve the boss 221 of extending column 22
The efficiency of heating surface divided, so as to shorten the time of action of alternating magnetic field, the agility of extension is improved, ensure efficient extension mechanism.
As shown in figure 1, in described prosthese, the prosthese also includes shell cap 50, and the shell cap 50 is located at described first
At open end, and it is pressed in the limit Rotational Cylindrical 24, the shell cap 50 is to be detachably connected with the shell 10, such as is blocked
Connect or be threadedly coupled.The shell cap 50 has the 3rd inner chamber, and the 3rd inner chamber is axially through described in the extending column 22
3rd inner chamber extends to the outside of the shell.By the sealing end of limited post 21 and first abut, limit Rotational Cylindrical 24 with it is spacing
Post 21 abuts, and the shell cap 50 is pressed on the limit Rotational Cylindrical 24 and is to be detachably connected with the shell 10, it is possible to achieve limit
Position post 21, limit Rotational Cylindrical 24 keep axial geo-stationary with shell 10.
As shown in figure 1, the first closing end of the shell 10 has hole 11, it is easy to input steam by hole 11 to carry out
Sterilizing, in addition, when extending column 22 extends to distal end, hole 11 also acts as air circulation between inside and outside, keeps during extending
The balance of the inside and outside draught head of prosthese.
In other examples, the distal end outer wall of the body of extending column 22 circumferentially has multiple axially extending recessed
Groove, the limit tumbler include multiple second alignment pins, and second alignment pin is fixed on the inwall of the distal end of shell 10, and
Extend radially inward, be contained in the axial notch.In another embodiment, the distal end inwall circumference cloth of shell 10
Multiple axial notches are equipped with, the limit tumbler includes multiple second alignment pins, and second alignment pin is fixed on the extension
The outer wall of the distal end of post 22, and extend radially outwardly, it is contained in an axial notch of the shell 10.
In a word, in prosthese provided by the invention and prosthesis system, the process stabilization of prosthese to Outer elongate is controllable, only makes
Promoted with inner elastomeric part, without operation, to human body hurtless measure, design structure is simple, overcomes vacation of the prior art
The problem of body security difference.The extending column 22 includes body and radially outward prolonged along body positioned at body proximal end boss, boss
Stretch, and extend into limited post 21, limited post 21 can be made to be fixed with extending column 22 in the case of usually, will not be produced axially opposing
It is mobile.When needing to extend, alternating magnetic field is imposed to prosthese, the boss heating is in contact with it the limited post of part to melt,
And then in the presence of a tensile force, the extending column is mobile to distal end, and the outer wall of the body of the extending column 22 is provided with groove, outside
In the presence of portion's alternating magnetic field, 222 sections of groove is then because the loop for producing magnetic circuit is cut off, it is impossible to produces vortex, avoids vacation
Body remainder heat damage.
The part that prosthese in the present invention belongs in prosthesis system, as shown in Fig. 1~2, prosthesis system, which includes extending, to be led
Body, i.e. prosthese in the present invention, and alternating magnetic field generating means, alternating magnetic field are located at human external.Wherein prolongation main body
Critical piece includes：Shell 10, limited post (such as limited post 21), extending column (such as extending column 22), limit tumbler (such as limit
Rotational Cylindrical 24, be mainly used in limiting the rotation of extending column 22), the composition such as elastic component (such as elastic component 30)；Alternating magnetic field occurs
Device includes：Ring body 81 and generating means main frame 82.Wherein, the inside of ring body 81 includes coil, generating means main frame 81, is used for
Control the parameters such as the Frequency, Intensity, And Time of alternating magnetic field.During operation, prosthese is inserted in ring body 81, generating means main frame 82
Control alternating magnetic field.Boss that the alternating magnetic field generating means can cause the extending column in prolongation main body every empty (such as it is convex
Platform 221) efficiently heating so that limited post is local melting, effective in the presence of elastic component controllable extending column to be stretched out；
The design of limited post of the present invention and limit tumbler ensures that extension is reliable and stable.The present invention is applied to external drive and extended, and stabilization can
By efficient, be particularly suitable for use in extension prosthese.
To sum up, the various configuration of prosthese and prosthesis system is described in detail above-described embodiment, certainly, present invention bag
Include but be not limited to configuration cited in above-mentioned implementation, enter line translation on the basis of any configuration provided in above-described embodiment
Content, belong to the scope that the present invention is protected.Those skilled in the art can draw inferences about other cases from one instance according to the content of above-described embodiment.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.Foregoing description is only to the present invention
The description of preferred embodiment, not to any restriction of the scope of the invention, the those of ordinary skill in field of the present invention is according to above-mentioned
Any change, the modification that disclosure is done, belong to the protection domain of claims.
Claims (18)
- A kind of 1. prosthese, it is characterised in that the prosthese includes shell, limited post, extending column, limit tumbler and elastic component, its In：The shell has the first open end positioned at distal end and the first closing end positioned at near-end；The limited post is placed in the shell, and is configured as at least keeping axial geo-stationary with the shell；The extending column is placed in the limited post, and is extended to the distal end of the shell, and the extending column includes a body At least one is located at the boss of body proximal end, and the boss extends radially outwardly along the body and stretches into the limited post；The limit tumbler, is contained in the shell, and motion is rotated for limiting the extending column；The elastic component, to provide elastic force to the extending column, the extending column is set to be moved to the distal end of the shell；When the shell outside apply an alternating magnetic field when, the extending column boss heating, make the limited post with it is described The position of boss contact is melted, so that axial direction of the extending column along the limited post described in the resilient element urges, to the shell Distal end is mobile.
- 2. prosthese as claimed in claim 1, it is characterised in that the distal end of at least described extending column body is prism, described Limiting tumbler includes limit Rotational Cylindrical, and the limit Rotational Cylindrical is located at the distal end of the shell, and is configured as at least keeping with shell Circumferentially opposed static, the limit Rotational Cylindrical is provided with first inner chamber, at least partly described first inner chamber and the extending column distal end Match, motion is rotated to limit the extending column.
- 3. prosthese as claimed in claim 2, it is characterised in that the limit tumbler also includes multiple first alignment pins, described Limit Rotational Cylindrical is adjacent to the limited post close to one end of first open end, the outer wall of the limit Rotational Cylindrical and described outer Multiple axially extending pin-and-holes are provided between the inwall of shell, each first alignment pin is inserted in a pin-and-hole, so that Limit Rotational Cylindrical and keep circumferentially opposed static with shell.
- 4. prosthese as claimed in claim 1, it is characterised in that the distal end outer wall of the extending column body circumferentially has multiple Axially extending groove, the limit tumbler include multiple second alignment pins, and second alignment pin is fixed on the shell Inwall, and extend radially inward, it is contained in the axial notch.
- 5. prosthese as claimed in claim 1, it is characterised in that shell distal end inwall circumferentially has multiple axially extending Groove, the limit tumbler includes multiple second alignment pins, second alignment pin be fixed on the extending column distal end outside Wall, and extend radially outwardly, it is contained in an axial notch of the shell.
- 6. prosthese as claimed in claim 1, it is characterised in that the body of the extending column is close to the outer of the distal end of the boss Wall surface has multiple axially extending insertion grooves along the extending column.
- 7. prosthese as claimed in claim 1, it is characterised in that the material of the limited post is resin, the melt of the resin Rate of volume flow is 20~50cm3/ 10min, modulus of elasticity are 2.5~5GPa.
- 8. prosthese as claimed in claim 7, it is characterised in that the resin is polyacetals or polyvinyl resin.
- 9. prosthese as claimed in claim 8, it is characterised in that the resin is dimethoxym ethane resin or acetal resin.
- 10. prosthese as claimed in claim 1, it is characterised in thatThe extending column is the ducted body with second inner chamber, and the distal end of the extending column is provided with the second closing end；The prosthese also includes inner prop, and the inner prop includes extension body and base, and the base of the inner prop is adjacent to outside described First closing end of shell, the extension body are placed in the second inner chamber of the extending column, and to second blind end Portion direction extends；The elastic component is a compression spring, is socketed on the extension body, and the near-end of the elastic component and the base It is adjacent, the distal end of the elastic component and the second closing end abutment.
- 11. prosthese as claimed in claim 10, it is characterised in that the inner prop also includes magnetic conductance part, the magnetic conductance part It is placed in the extension body of the inner prop, the relative permeability of the magnetic conductance part is 100~10000.
- 12. prosthese as claimed in claim 10, it is characterised in that the magnetic conductance component materials are permanent-magnet ferrite.
- 13. prosthese as claimed in claim 10, it is characterised in that the material of the outer wall of at least described extension body is biofacies Capacitive material.
- 14. prosthese as claimed in claim 10, it is characterised in that between the outer wall of the inwall of the elastic component and the inner prop is Gap coordinates, and the second inwall of the outer wall of the elastic component and the extending column coordinates for gap.
- 15. prosthese as claimed in claim 2, it is characterised in that the prosthese also includes shell cap, and the shell cap is positioned at described the Near one open end, the shell cap is to be detachably connected with the shell, so that the limit tumbler, limited post are relative to institute State shell and keep axial geo-stationary, the shell cap has the 3rd inner chamber of insertion, and the extending column passes through the 3rd inner chamber Extend to the outside of the shell.
- 16. prosthese as claimed in claim 1, it is characterised in that the first closing end of the shell has the hole of insertion.
- 17. prosthesis system, it is characterised in that the prosthesis system includes the prosthese and friendship described in any one of claim 1~16 Varying magnetic field generating means, the alternating magnetic field generating means provide alternating magnetic field.
- 18. the prosthesis system as described in power 17, it is characterised in that the alternating magnetic field generating means includes ring body and generating means Main frame, the generating means main frame are used to control alternating magnetic field, there is provided the prosthese is placed in ring body during alternating magnetic field.
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| CN201710714216.8A CN107518961B (en) | 2017-08-18 | 2017-08-18 | Prosthesis and prosthesis system |
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| CN201710714216.8A CN107518961B (en) | 2017-08-18 | 2017-08-18 | Prosthesis and prosthesis system |
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| CN107518961B CN107518961B (en) | 2020-09-11 |
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| CN108261269A (en) * | 2018-05-31 | 2018-07-10 | 上海微创医疗器械（集团）有限公司 | Support structure, prosthesis and prosthesis system |
| CN115105260A (en) * | 2022-06-17 | 2022-09-27 | 应脉医疗科技(上海)有限公司 | Implantable prosthesis delivery device, system and method of manufacture |
| CN115501004A (en) * | 2021-06-07 | 2022-12-23 | 微创投资控股有限公司 | Prosthesis and Prosthesis System |
| CZ309950B6 (en) * | 2022-09-06 | 2024-02-28 | Prospon, Spol. S R.O. | Distraction device for implants |
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|---|---|
| CN107518961B (en) | 2020-09-11 |
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