CN107260368A - Prosthesis - Google Patents
Prosthesis Download PDFInfo
- Publication number
- CN107260368A CN107260368A CN201710661342.1A CN201710661342A CN107260368A CN 107260368 A CN107260368 A CN 107260368A CN 201710661342 A CN201710661342 A CN 201710661342A CN 107260368 A CN107260368 A CN 107260368A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- shell
- groove
- prosthese
- thrust ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- A61F2/28—Bones
- A61F2002/2825—Femur
-
- 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
- A61F2002/2892—Tibia
-
- 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
- A61F2002/2896—Ulna
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/3052—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts unrestrained in only one direction, e.g. moving unidirectionally
-
- 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
Abstract
The invention provides a prosthesis comprising a housing, a first sleeve, a second sleeve and a third sleeve received in the housing, wherein: the second sleeve is configured to remain axially relatively stationary with respect to the housing; the second sleeve is coaxially sleeved outside the first sleeve; the first sleeve is connected with the third sleeve through a limiting assembly, the third sleeve extends from the proximal end to the distal end and extends out of the shell, and the limiting assembly limits the third sleeve to rotate around the axis of the second sleeve; under the action of an alternating magnetic field, the second sleeve has a first working state and a second working state, when the second sleeve is in the first working state, the second sleeve drives the first sleeve to move along the axial direction of the shell, and when the second sleeve is in the second working state, the second sleeve enables the first sleeve to keep relatively static relative to the second sleeve in the axial direction.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of prosthese.
Background technology
Children with tumour, the especially distal femur with high incidence and proximal tibia osteosarcoma, section of early stage
Limb treatment is slowly replaced 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.This not only profile it is ugly, and 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 class is
Invasive extends prosthese, although can extend, but design extension mechanism must row second operation could complete, if desired for
Surgical exposure prosthese, turns internal structure formula prosthese with specific purpose tool, and 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, extension length
Degree is uncertain, and external power supply connection in vivo will be by hypodermis, and this, which will also result in some complication, and infant body, pacifies
Supply unit is filled, this can not ensure the reliability of prosthese, easily fail, designed unreasonable.
Accordingly, it would be desirable to design a kind of noninvasive extensible prosthese of safety.
The content of the invention
An object of the present invention is to provide a kind of prosthese, to solve the unsafe problem of existing prosthese extension.
An object of the present invention also resides in a kind of prosthese of offer, to solve the problem of existing borrowed structure is complicated.
An object of the present invention also resides in a kind of prosthese of offer, with solve existing prosthese need invasive procedures could be complete
Into the problem of extension.
An object of the present invention also resides in a kind of prosthese of offer, to solve the problem of existing prosthese easily fails.
An object of the present invention also resides in a kind of prosthese of offer, has in-body power source to solve existing prosthese and causes
The problem of complication.
In order to solve the above technical problems, the present invention provides a kind of prosthese, the prosthese includes shell, is contained in the shell
The first sleeve, second sleeve and 3rd sleeve, wherein：
The second sleeve is configured as keeping axial geo-stationary relative to the shell；
The second sleeve is coaxially socketed on the outside of first set cylinder；
First sleeve is connected by a limiter assembly with the 3rd sleeve, and the 3rd sleeve is proximally toward distal end
Extension, and extend shell, the limiter assembly limits the 3rd sleeve and rotated around the axis of second sleeve；
Under action of alternating magnetic field, the second sleeve has the first working condition and the second working condition, described second
When sleeve is in the first working condition, the second sleeve drives first sleeve to prolong the axial movement of the shell, described
When second sleeve is in the second working condition, the second sleeve makes first sleeve relative to the second sleeve holding shaft
To geo-stationary.
Optionally, in described prosthese, there are multiple 3rd grooves, the described 3rd is recessed on the outer wall of the second sleeve
Groove is equipped with permanent magnet；
The second sleeve is arranged to that the rotation of second sleeve axis can be surrounded；
When the second sleeve is in the first working condition, the second sleeve is under action of alternating magnetic field, with a direction
Axis around second sleeve rotates；
When the second sleeve is in the second state, the second sleeve is enclosed under action of alternating magnetic field with other direction
Axis around second sleeve rotates.
Optionally, in described prosthese, the outer wall of first sleeve has multiple lugs, the second sleeve it is interior
There is multiple first grooves and multiple second grooves on wall, wherein：
First groove is axially extended, and second groove is circumferentially；
Each first groove is connected with multiple second grooves, and connected with first groove it is multiple described in
Second groove is located at the same side of first groove；
The lug and first groove and second groove match, so that the second sleeve is in the first work
When making state, the lug can be moved axially in the first groove；It is described when the second sleeve is in the second working condition
Lug is placed in the second groove keeps axial geo-stationary relative to second groove.
Optionally, in described prosthese, the second sleeve is configured as that the rotation of second sleeve axis can be surrounded；
Under action of alternating magnetic field, the second sleeve rotates around the axis of second sleeve clockwise, drives described the
One sleeve prolongs axially to during the movement of distal end, and second groove is arranged on the left of first groove；In action of alternating magnetic field
Under, the second sleeve rotates around the axis of second sleeve counterclockwise, drives first sleeve to prolong axially mobile to distal end
When, second groove is arranged in the right side of first groove.
Optionally, in described prosthese, one end flexible body of second groove away from first groove, institute
Stating elastomer is used for lug described in clamping.
Optionally, in described prosthese, the prosthese also includes thread spindle,
External screw thread is provided with outside the thread spindle, and is fixed with the shell, the first sleeve coaxial sleeve is connected to described
There is the internal thread matched with the thread spindle external screw thread on the outside of thread spindle, the inwall of first sleeve；
When the second sleeve is in the first working condition, the second sleeve drives the first sleeve around second sleeve
Axis rotates, and then prolongs axial movement.
Optionally, in described prosthese, first sleeve is extended in the thread spindle distal end, and extends into described
3rd sleeve, the prosthese also includes at least one first latch, and at least one the 4th latch, first latch is fixed on institute
The near-end of thread spindle is stated, and the two ends extension of the first latch is fixed with the shell simultaneously, at least one described 4th latch is consolidated
Due to the distal end of the thread spindle, and simultaneously, the two ends of the 4th latch extend through after the 3rd sleeve and fixed with shell, with
The thread spindle is set to be fixed with the shell.
Optionally, in described prosthese, the limitation resistor includes end cap, the first thrust ball bearing, the second thrust ball
Bearing and the 3rd latch,
First thrust ball bearing, the second thrust ball bearing is located at the distal end of first sleeve, the end cap
Positioned at the distal end of first thrust ball bearing and the second thrust ball bearing, and it is detachably fixed and is connected with first sleeve,
So that first thrust ball bearing and the second thrust ball bearing relative to the first sleeve holding shaft to geo-stationary；
The end of the 3rd sleeve and the first sleeve connection end has an outward flange, and the outward flange is located at described
Between first thrust ball bearing and the second thrust ball bearing；
The 3rd sleeve has a 4th axially extending groove, and the 3rd latch passes through the 4th groove, and
The two ends extension of 3rd latch is fixedly connected with the shell.
Optionally, in described prosthese, the limiter assembly includes end cap, double-direction thrust ball bearing and the 3rd latch,
The double-direction thrust ball bearing is located at the distal end of first sleeve, and the end cap is located at the bidirectional propulsion
The distal end of ball bearing, and be detachably connected with first sleeve, so that the double-direction thrust ball bearing is relative to the first sleeve
Keep axial geo-stationary；
The 3rd sleeve is fixedly connected with the blowout patche of the double-direction thrust ball bearing；
The 3rd sleeve has the 4th groove, and the 3rd latch passes through the 4th groove, and the 3rd latch
Two ends extension be fixedly connected with the shell.
Optionally, in described prosthese, being shaped as the 3rd sleeve at least distal end is prismatic, and the prosthese is also wrapped
The 5th sleeve being contained in the shell is included, the 5th sleeve is located at the distal end of the shell, and is fixedly connected with shell,
The 5th sleeve has a first inner chamber, and at least partly described first inner chamber has the distal end shape phase with the 3rd sleeve
The shape of matching, is rotated with limiting 3rd sleeve.
Optionally, in described prosthese, the prosthese also include multiple second latches, the outer wall of the 5th sleeve with
At least one the 5th axially extending groove is provided between shell, second latch inserts the 5th groove, to limit
State 5th sleeve and enclose and rotate about the axis.
Optionally, in described prosthese, the prosthese also includes 4th sleeve, the 3rd thrust ball bearing and the 4th thrust
Ball bearing,
The 4th sleeve be located at be contained in the shell, the distal end of the second sleeve, and the 4th sleeve by with
Be set to and keep axial geo-stationary relative to the shell, the 3rd thrust ball bearing be located at the second sleeve and shell it
Between, the 4th thrust ball bearing is located between second sleeve and 4th sleeve, to realize the second sleeve relative to described
Shell keeps axial geo-stationary, and can be around the rotation of second sleeve axis.
Optionally, in described prosthese, the prosthese also includes 5th sleeve, and shell cap, the 5th sleeve is contained in
The shell, and positioned at the distal end of the 4th sleeve, the shell cap is located at the distal end of the shell, is removable with the shell
Connection is unloaded, the second sleeve, the 4th sleeve and the 5th sleeve is kept relatively quiet with the shell in the axial direction
Only；Shell cap described in the shell cap has second inner chamber, so that the 3rd sleeve is by the second inner chamber and to the shell cap
Distal end extension.
In the prosthese that the present invention is provided, by the way that under action of alternating magnetic field, the second sleeve has the first work shape
State and the second working condition, when the second sleeve is in the first working condition, the second sleeve drives first sleeve
Prolong the axial movement of shell, when the second sleeve is in the second working condition, the second sleeve makes the first sleeve phase
Keep axial geo-stationary for second sleeve, can to shells for prostheses Outer elongate, the prosthese that the present invention is provided have with
Lower beneficial effect：First, the prosthetic designs that the present invention is provided are simple, only have simple mechanical structure and dimensional fits, it is to avoid
The problem of mechanism that power supply provides power causes to control complexity, secondly, alternating magnetic field are located at outside human body, without in people's et al. Ke
Power source (such as power supply, battery), it is to avoid the complication for needing the internal external power supply connected by hypodermis to cause,
In addition, external alternating magnetic field is readily available, alternative height, it is to avoid power source failure, such as dead battery capability, power supply occur
Middle component damage failure, it is to avoid the potential failure that complex mechanism is present, further increases the reliability of this prosthese, enters
One step, the prosthese that provides of the present invention is only promoted using magnetic field force, alternating magnetic field can outside human body, without with prosthese first
Tube-in-tube structure is connected, harmless without there is invasive procedures without exposure prosthese, overcomes prosthese safety of the prior art
Property difference the problem of, further, the present invention provide prosthese manufacture and extension cost it is low, extension system is simple.In a word, this hair
Bright extension Mechanism Design is simple and effect is fine.
Brief description of the drawings
Fig. 1 is prosthese overall structure diagram of the present invention；
Fig. 2 is one embodiment of the invention the first tube-in-tube structure schematic diagram；
Fig. 3 is one embodiment of the invention second sleeve structural representation；
Fig. 4 is the sleeve of one embodiment of the invention first and second sleeve assembling schematic diagram；
Fig. 5 is the sleeve of one embodiment of the invention first and 3rd sleeve assembling schematic diagram；
Shown in figure：10- shells；20- thread spindles；The sleeves of 31- first；311- lugs；32- second sleeves；321- first
Groove；The grooves of 322- second；The grooves of 323- the 3rd；324- elastomers；33- 3rd sleeves；331- outward flanges；332- the 4th is recessed
Groove；34- 4th sleeves；35- 5th sleeves；The latches of 41- first；The latches of 42- second；The latches of 43- the 3rd；The thrust balls of 51- first
Bearing；The thrust ball bearings of 52- second；The thrust ball bearings of 53- the 3rd；The thrust ball bearings of 54- the 4th；80- end caps；90- shell caps.
Embodiment
Prosthese proposed by the present invention is described in further detail below in conjunction with the drawings and specific embodiments.According to following theory
Bright 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.
The core concept of the present invention is to provide a kind of prosthese, to solve the unsafe problem of existing prosthese extension.
To realize above-mentioned thought, the invention provides a kind of prosthese, the prosthese includes shell, is contained in the shell
First sleeve, second sleeve and 3rd sleeve, wherein：The second sleeve is configured as keeping axial phase relative to the shell
To static；The second sleeve is coaxially socketed on the outside of first set cylinder；First sleeve by a limiter assembly with it is described
3rd sleeve is connected, and the 3rd sleeve proximally extends toward distal end, and extends shell, the limiter assembly limitation described the
Three sleeves rotate around the axis of second sleeve；Under action of alternating magnetic field, the second sleeve have the first working condition and
Second working condition, when the second sleeve is in the first working condition, the second sleeve drives first sleeve to prolong institute
The axial movement of shell is stated, when the second sleeve is in the second working condition, the second sleeve makes the first sleeve phase
Axial geo-stationary is kept for the second sleeve.
In the prosthese that the present invention is provided, by the way that under action of alternating magnetic field, the second sleeve 32 has the first work
State and the second working condition, when the second sleeve 32 is in the first working condition, the second sleeve 32 drives described the
One sleeve 31 prolongs the axial movement of shell 10, can extend to the distal end of shells for prostheses 10；The second sleeve 32 is in second
During working condition, the second sleeve 32 makes first sleeve 31 keep axial geo-stationary relative to second sleeve 32.
The prosthese that the present invention is provided has the advantages that：First, the prosthetic designs that the present invention is provided are simple, only have
Simple mechanical structure and dimensional fits, it is to avoid the problem of mechanism that power supply provides power causes to control complexity, secondly, alternation magnetic
Field is located at outside human body, without at people's et al. Ke power source (such as power supply, battery), it is to avoid need to connect by hypodermis
The complication that causes of internal external power supply.In addition, external alternating magnetic field is readily available, alternative height, it is to avoid move
Power source is failed, such as dead battery capability, component damage fails in power supply, it is to avoid the potential failure that complex mechanism is present,
Further increase the reliability of this prosthese.Further, the prosthese that the present invention is provided only is promoted using magnetic field force, is handed over
Varying magnetic field can be outside human body, without being connected with the tube-in-tube structure of prosthese first, without exposure prosthese, without there is invasive procedures, to human body
It is harmless, the problem of prosthese security of the prior art is poor is overcome, further, prosthese manufacture and prolong that the present invention is provided
Long cost is low, and extension system is simple.In a word, extension Mechanism Design of the invention is simple and effect is fine.
" distal end ", " distal side " described in the present invention refers to close to the side of prosthese bearing of trend；Accordingly, it is " near
End ", " nearside " are then the sides away from prosthese bearing of trend.
It is a kind of prosthese of controllable extension femur in following embodiments, it is not intended that the prosthese of the present invention can only be answered
For extending in the prosthese of femur, it can be used for extending the prosthese of shin bone, prosthese of extension ulna etc..In the present embodiment,
The shell is the femur case portion point that can extend in femoral prosthesis, and femoral joint, prosthese one are fabricated in the implementation case
End connection tibial prosthesis, prosthese other end connection femur insertion section, it can promote tibial prosthesis and femur to be embedded in section point when extending
From.
As shown in figure 1, the prosthese includes shell 10, the first sleeve 31, second sleeve 32 and 3rd sleeve 33, wherein：
The second sleeve 32 is configured as keeping axial geo-stationary relative to prosthese；The second sleeve 32 is coaxially socketed on first
The outside of sleeve 31；First sleeve 31 is connected by a limiter assembly with the 3rd sleeve 33, the 3rd sleeve 33
Proximally extend toward distal end, and extend shell 10, the limiter assembly limits the 3rd sleeve 33 and surrounds second sleeve 32
The rotation of axis；Under action of alternating magnetic field, the second sleeve 32 has the first working condition and the second working condition, described
When second sleeve 32 is in the first working condition, the axial direction that the second sleeve 32 drives first sleeve 31 to prolong shell 10 is transported
Dynamic, when the second sleeve 32 is in the second working condition, the second sleeve 32 makes first sleeve 31 relative to second
Sleeve 32 keeps axial geo-stationary.In the present embodiment, the prosthese also includes setting outside thread spindle 20, the thread spindle 20
There is external screw thread, and fixed with the shell 10, first sleeve 31 is coaxially socketed on the outside of the thread spindle 20, described
There is the internal thread matched with the external screw thread of thread spindle 20 on the inwall of one sleeve 31；The second sleeve 32 is in first
During working condition, the second sleeve 32 drives the first sleeve 31 to surround the axial-rotation of second sleeve 32, further prolongs second
The axial movement of sleeve 32.
In the present embodiment, the second sleeve 32 is not only arranged to keep axially opposing quiet relative to the shell 10
Only, and can around second sleeve axis rotate.Specifically, the prosthese also includes 4th sleeve 34, the 3rd thrust ball
The thrust ball bearing 54 of bearing 53 and the 4th.The 4th sleeve 34 is located at the distal end of the second sleeve 32, and described 4th set
Cylinder 34 is configured as keeping axial geo-stationary relative to the shell 10, and the 3rd thrust ball bearing 53 is located at described second
Between the near-end and shell of sleeve 32, the 4th thrust ball bearing 54 is located between second sleeve 32 and 4th sleeve 34, with
Realize that the second sleeve 32 keeps axial geo-stationary relative to the shell 10, and the axis of second sleeve 32 can be surrounded
Rotation.
Further, as shown in figure 3, there are multiple 3rd grooves 323, the described 3rd is recessed on the outer wall of the second sleeve 32
Groove 323 is equipped with permanent magnet.Permanent magnet is fixed in the 3rd groove 323 of second sleeve 32, in order to avoid rocking, and can also be used
Permanent magnet is bonded in the 3rd groove 323 by glue.3rd groove 323 may be designed as opening to central reduction, such as swallow
Stern notch, makes permanent magnet be embedded in the 3rd groove.The number of permanent magnet typically can be 4 or 6, be evenly distributed on same flat
On face, and each magnet the direction of magnetization each parallel to the plane, each permanent magnet synchronous rotary under specific initial angle,
The vertical disc of rotary shaft, it is ensured that can form the rotating excitation field of constant size in disc center.When second sleeve is external in one
During the circle centre position of permanent magnet source, the rotation of second sleeve 32 can be driven.In the present embodiment, the second sleeve is in the first work
When making state, the second sleeve is under action of alternating magnetic field, and the axis with a direction around second sleeve rotates, and described second
When sleeve is in the second working condition, the second sleeve surrounds second sleeve under action of alternating magnetic field according to other direction
Axis rotation.More specifically, as shown in figure 3, when second sleeve is in the first working condition, the second sleeve is surrounded counterclockwise
The rotation of second sleeve axis, drives first sleeve to prolong axially mobile to distal end.Here " counterclockwise " and " clockwise ",
" left side " and " right side " is each meant come from the direction of prosthese proximate from.
In addition, there is multiple first grooves 321 and multiple second grooves 322 on the inwall of the second sleeve 32, wherein：
First groove 321 is along the axially extending of second sleeve 32, and second groove 322 is along the inwall week of second sleeve 32
To extension, it is preferable that second groove 322 is vertical with first groove 321；Each first groove 321 and multiple institutes
The second groove 322 is stated to connect, and multiple second grooves 322 connected with first groove 321 are located at first groove
321 the same side.In second sleeve 32 shown in Fig. 3, the second groove 322 is arranged in the first groove 321 for being attached thereto
Right side.Axially disposed into equal spacing between the second adjacent groove, this spacing is the spacing that reality extends every time, one
As take 0.8mm between 1.2mm.Or the spacing between the second groove is planned according to child growth phase feature.
As shown in Fig. 2 the outer wall of first sleeve 31 has multiple lugs 311.The lug 311 and described first recessed
Groove 321 and second groove 322 match, during so that the second sleeve 32 being in the first working condition, the lug 311
It can be moved axially in the first groove 321；When the second sleeve 32 is in the second working condition, the lug 311 is placed in
In second groove 322 axial geo-stationary is kept relative to second sleeve 32.Here " lug 311 and first groove
321 and second groove 322 match ", refer to that the shape and quantity of described lug should be with the first groove, the second grooves
Shape and quantity match, so that lug can vertically be moved freely in the first groove, and can be contained in the second groove
In.It is preferred that, lug shape is identical and is spacedly distributed on the outer wall of the first sleeve.The axial length of lug need to be slightly less than
The axial width of two grooves, is easy to the side wall with the second groove to coordinate, bears axial compressive force.
As shown in Fig. 2 having internal thread on the inwall of the first sleeve 31, coordinate with thread spindle formation screw thread.In alternation magnetic
In the presence of, first sleeve 31 can be driven in the presence of alternating magnetic field to be rotated relative to the thread spindle 20,
To move in the axial direction.Here screw thread, is preferably designed to coarse-pitch thread, and trapezoidal thread has certain axial direction to bear to meet
Power and the relatively small screw thread cooperation requirement of resistance in axial thread motion.
As shown in figure 4, when alternating magnetic field rotates, the drive of the magnetic force between permanent magnet and alternating magnetic field of second sleeve 32
Lower rotate counterclockwise, if now lug 311 is located at position shown in solid (near-end of the first groove 321), lug 311 and the
The left side of one groove 321 keeps contact, the first sleeve 31 is rotated, the rotation of the first sleeve 31 with the rotation of second sleeve 32
It is set to be axially moveable under the cooperation of the threaded connection of thread spindle 20.When the first sleeve 31 be moved in the first groove 321 with
After dotted line position same level line position, if the first sleeve 31 also needs to move axially further, the prosthese continues
In alternating magnetic field, the position until reaching first object in the first groove 321.If it is recessed that the first sleeve 31 reaches first
The position of first object is, it is necessary to make the first sleeve 31 keep axial geo-stationary with second sleeve 32 in groove 321.Now, change
The direction of rotation of alternating magnetic field, because the first sleeve 31, second sleeve 32 are there is no contact relation, the first sleeve 31 is relative to outer
The remains stationary of shell 10, second sleeve 32 turns clockwise alone, and the lug 311 enters in the second groove 322, until second recessed
Groove 322 and the right contact of the first sleeve 31.Now, the first sleeve 31 has and proximally moved under the driving of second sleeve 32
Dynamic trend, but prevented by the proximal, side wall of the second groove 322.Hereby it is achieved that the first sleeve 31 is relative to second sleeve
32 keep axial geo-stationary.In in addition, in described prosthese, second groove 322 is away from first groove 321
The flexible body 324 in one end, 324 pairs of the elastomer lug 311 applies radial forces, with lug 311 described in clamping.
Elastomer typically adds trapezoidal round end mechanical parts to constitute using little spring.Utilize the round end pressure extrusion lug of elastomer, it is to avoid
Under the conditions of improper extension, external perturbed force source makes lug 311 depart from the second groove 322.
The second sleeve is configured as that the rotation of second sleeve axis can be surrounded；Under action of alternating magnetic field, described
Two sleeves rotate around the axis of second sleeve clockwise, drive first sleeve prolong axially to distal end it is mobile when, described the
Two grooves are arranged on the left of first groove；Under action of alternating magnetic field, the second sleeve surrounds second set counterclockwise
The axis rotation of cylinder, drive first sleeve prolong axially to distal end it is mobile when, second groove is arranged in described first
The right side of groove.
In the present embodiment, the thread spindle 20 is contained in the inside of first sleeve 31, and with first sleeve 31
Threaded connection.Further, first sleeve 31 is extended in the distal end of thread spindle 20, and extends into the 3rd sleeve
33.In order that the first sleeve 31 is moved axially, thread spindle 20 must be fixed relative to shell 10.Specifically, the spiral shell
Line axle is realized by latch and fixed with the shell 10.In the present embodiment, the prosthese also includes at least one first latch
41, at least one the 4th latch, first latch 41 is fixed on the near-end of the thread spindle, and two ends extension simultaneously with it is described
Shell 10 is fixed, and the 4th latch is fixed on the distal end of the thread spindle 20, and two ends extend through described 3rd set simultaneously
Fixed after cylinder 33 with shell 10, so that the thread spindle 20 is fixed with the shell 10.Obviously, the 3rd sleeve is inserted the 4th
Pin is provided with an axially extending groove with the 3rd sleeve junction, in order to which the 3rd sleeve is moved axially.In addition, excellent
Choosing, the 4th latch extends through the rear of 4th sleeve 34 and is fixedly connected with shell 10, so the 4th latch is in stationary threaded shaft 20
While 4th sleeve 34 is fixedly connected with shell 10.
In the present embodiment, the limited part includes end cap 80, the first thrust ball bearing 51, the He of the second thrust ball bearing 52
3rd latch 43.First thrust ball bearing 51, the second thrust ball bearing 52 is located at the distal end of first sleeve 31.It is described
End cap 80 is located at first thrust ball bearing 51, the distal end of the second thrust ball bearing 52, and removable with first sleeve 31
Connection is unloaded, so that first thrust ball bearing 51, the second thrust ball bearing 52 keeps axially opposing relative to the first sleeve 31
It is static.Here thrust ball bearing can be single direction thrust ball bearing or double-direction thrust ball bearing.The 3rd sleeve
33 have an outward flange 331 with the end of the connection end of the first sleeve 31, form similar flange plate structure.The outward flange
331 are located between first thrust ball bearing 51, the second thrust ball bearing 52.Have one on the outer wall of the 3rd sleeve 33
The 4th axially extending groove 332, the 3rd latch 43 passes through the 4th groove 332, and two ends extension and the shell
It is fixedly connected.So, when first sleeve 31 rotates, the 3rd sleeve 33 remains in that static；Meanwhile, when
When first sleeve 31 axially moves, the 3rd sleeve 33 is axially moved by first sleeve 31 driving.Ability
Field technique personnel should have found that the 3rd latch 43 can also fix the thread spindle 20 simultaneously here.Therefore, from simplified borrowed structure
Angle set out, the 3rd latch 43 and the 4th latch can only select one.The distal end of first sleeve 31 as shown in Figure 5 has
External screw thread.The end cap 80 is tubular article.There is the external screw thread with first sleeve 31 to match for the inner chamber of the end cap 80
Internal thread.The distal end of the end cap 80 is provided with a baffle plate, to prevent the first thrust ball bearing 51, the second thrust ball bearing
52 axial movements.The baffle plate has a through hole, so that the 3rd sleeve 33 passes through.In another embodiment, it is described
Limited part includes end cap 80, double-direction thrust ball bearing.The blowout patche of the double-direction thrust ball bearing is fixed with the 3rd sleeve 33
Connection, remaining is similar to the above embodiments.
Further, the 3rd sleeve at least distal end be shaped as it is prismatic.The prosthese also includes 5th sleeve 35, institute
State 5th sleeve 35 and be located at the distal end of the shell 10, and be fixedly connected with shell 10, the 5th sleeve 35 has one first
Inner chamber, at least partly described first inner chamber has the shape that the distal end shape with the 3rd sleeve 33 matches, with further
Limitation 3rd sleeve 33 rotates motion.In the present embodiment, the prosthese also includes multiple second latches 42, described 5th set
Cylinder is located at the distal end of the 4th sleeve, and (does not show in figure provided with the 5th groove between the outer wall and shell of the 5th sleeve
Go out), the 4th latch inserts the 5th groove, is enclosed with to limit the 5th sleeve and rotated about the axis.
Finally, the prosthese also includes shell cap 90, and the shell cap 90 is located at the distal end of the shell, and is pressed on described the
On five sleeves 35 so that the second sleeve 32, the 4th sleeve 34 and the 5th sleeve 35 in the axial direction with it is described outer
Shell 10 keeps geo-stationary；The shell cap 90 and the shell 10 to be detachably connected, make the second sleeve, described 4th set
Cylinder and the 5th sleeve keep geo-stationary with the shell in the axial direction, and the shell cap 90 has a second inner chamber, so that
The 3rd sleeve 33 extends by the second inner chamber and to the distal end of the shell cap 90.The concrete structure of the shell cap 90 with
And the matching relationship with the shell 10, it may be referred to the structure of end cap 80 and the cooperation of the sleeve 31 of end cap 80 and first closed
System.The material of the shell 10 is polyetheretherketonematerials materials.The material of shell is polyetheretherketonematerials materials, and polyetheretherketonematerials materials have good
Good biocompatibility, possesses the ability of resist chemical.
In the present invention, under action of alternating magnetic field, the second sleeve has the first working condition and the second work shape
State, when the second sleeve is in the first working condition, the second sleeve drives first sleeve to prolong the axle of the shell
To movement, when the second sleeve is in the second working condition, the second sleeve makes first sleeve relative to described the
Two sleeves keep axial geo-stationary.Extend Mechanism Design simple and effect is fine, it is to avoid the potential mistake that complex mechanism is present
Effect.
In a preferred embodiment of the invention, the first groove 321 of the inwall of second sleeve 32 and the structure of the second groove 322
Design, i.e., the same side that multiple second grooves 322 are in the first groove 321, when second sleeve 32 is revolved clockwise or counterclockwise
When turning, from the cooperation that to produce two kinds different of the first sleeve 31, i.e. one kind is to be rotationally advancing the first sleeve 31, i.e., to extension
Long, a kind of is that the lug 311 on the first sleeve 31 is stuck in the second groove 322 and geo-stationary.First groove 321 and second is recessed
Groove 322 also has an important function to be to protect the first sleeve 31 and thread spindle 20 from two kinds of different matching relationships of lug 311
Screw thread coordinate, in the matching relationship that axial compressive force is married again to the groove 322 of lug 311 and second, prevent in actual applications
Destruction of the axial compressive force to screw thread.
In a preferred embodiment of the invention, the elastic pressure of lug 311 is kept away using the elastomer in the second groove 322
Exempt from the case of improper extension, external interference rotates the first sleeve 31, extension mechanism in destruction prosthese.
In a preferred embodiment of the present invention, the first groove 321 and the second groove 322 are designed as the second adjacent groove
Distance between center line between 322 is equal, and this design can realize accurate extension.Meanwhile, the first sleeve 31 and thread spindle 20 are used
The form that screw thread coordinates, can make the increased periods speed of extension uniform, prevent moment extension to patient's in actual applications
Actual bodily harm, more hommization, it is reasonable in design.
In a preferred embodiment of the present invention, the polygon outer wall design of 3rd sleeve 33 both meets axial movement
It is required that, and effectively prevent it from rotating, it is to avoid rotation causes prosthese dermoskeleton link structure, and such as femur is embedded in the destruction of section.
The present invention prosthese assembling extension process be：First, the first sleeve 31 and the screw thread of thread spindle 20 are coordinated, in end cap
The first thrust ball bearing 51, the second thrust ball bearing 52 and 3rd sleeve 33 are loaded onto in 80, then end cap 80 is threadedly coupled and matched somebody with somebody
Close onto the first sleeve 31.
Secondly, second sleeve 32 includes multiple permanent magnets, can with silica gel by permanent magnet be bonded at second sleeve it is the 3rd recessed
In groove 323, it should be noted that what is contacted with the 3rd groove 323 should be the same magnetic pole of permanent magnet.
Then, the 3rd thrust ball bearing 53, second sleeve 32, the 4th thrust ball bearing 54 and are sequentially loaded into shell 10
Four sleeves 34, the first sleeve 31 assembled in initial step is placed in the first groove 321 of second sleeve 32 with lug 311
Mode be placed in second sleeve 32, be then assemblied in shell 10, the near-end of thread spindle 20 is arrived to the near-end of shell, make
The neck of the proximal end of thread spindle 20 aligns with the through hole of outer casing bottom, the first latch 41 is injected through hole and fixes thread spindle
20, while the first sleeve 31 is assembled, the other end of stationary threaded shaft 20 is coordinated with the 3rd latch 43, wherein the 3rd latch 43
Will be by the 4th groove 332 of 3rd sleeve 33.
Then, the engagement sleeves of 5th sleeve 35 in 3rd sleeve 33, between the outer surface of 5th sleeve 35 and shell 10
The 5th groove formed, plugs the second latch 42, finally closes shell cap 90.
The two ends of shell 10 answer chain link to connect the component of human body, wherein the component for connecting human body is mainly key and cuts with scissors
Chain pedestal, assembly material selects the titanium alloy material of good biocompatibility.
Finally, when the prosthese for being implanted into human body needs extension, limbs is placed on the ferreous source center of external permanent magnetism, passed through
X-ray etc. aids in Visual Observations Observations, and when second sleeve 32 obtains the rotation direction power that power source is given, the first sleeve 31 is with second
Sleeve 32 is rotated together so that the axial advancement of the first sleeve 31, and then promotes the axial advancement of 3rd sleeve 33, prosthese extension；When
The first sleeve 31 is obtained by Visual Observations Observations to reach after specific length, opposite force is given in the external ferreous source of permanent magnetism, and second sleeve 32 is anti-
To rotation, the opposite case of the first sleeve 31 is static, then the lug 311 of the first sleeve 31 will move to second with respect to second sleeve 32
In second groove 322 of sleeve 32, after lug 311 contacted with the second groove 322 it is stuck after then stop external force source, once extension knot
Beam.
The present invention realizes the non-invasive of prosthese extension process, it is to avoid the prosthese of second operation or cortex implanted is to suffering from
The complication that person brings.The accuracy of prosthese extension is realized, the extension prosthese that presently, there are, which can not reliably be known, actually to be prolonged
Long actual length, present invention incorporates actual requirement, reasonably designing can extend and extending length is determined every time prosthese.
To sum up, the various configuration of prosthese is described in detail above-described embodiment, certainly, and the present invention includes but do not limited to
The cited configuration in above-mentioned implementation, any content for entering line translation on the basis of the configuration that above-described embodiment is provided, belongs to
The scope protected in the present invention.Those skilled in the art can draw inferences about other cases from one instance according to the content of above-described embodiment.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, 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, modification that disclosure is done, belong to the protection domain of claims.
Claims (13)
1. a kind of prosthese, it is characterised in that the prosthese includes shell, the first sleeve for being contained in the shell, second sleeve
And 3rd sleeve, wherein：
The second sleeve is configured as keeping axial geo-stationary relative to the shell；
The second sleeve is coaxially socketed on the outside of first set cylinder；
First sleeve is connected by a limiter assembly with the 3rd sleeve, and the 3rd sleeve is proximally prolonged toward distal end
Stretch, and extend shell, the limiter assembly limits the 3rd sleeve and rotated around the axis of second sleeve；
Under action of alternating magnetic field, the second sleeve has the first working condition and the second working condition, the second sleeve
During in the first working condition, the second sleeve drives first sleeve to prolong the axial movement of the shell, described second
When sleeve is in the second working condition, the second sleeve makes first sleeve keep axial phase relative to the second sleeve
To static.
2. prosthese as claimed in claim 1, it is characterised in that there are multiple 3rd grooves on the outer wall of the second sleeve,
3rd groove is equipped with permanent magnet；
The second sleeve is arranged to that the rotation of second sleeve axis can be surrounded；
When the second sleeve is in the first working condition, the second sleeve is surrounded under action of alternating magnetic field with a direction
The axis rotation of second sleeve；
When the second sleeve is in the second state, the second sleeve is under action of alternating magnetic field, with other direction around the
The axis rotation of two sleeves.
3. prosthese as claimed in claim 1, it is characterised in that the outer wall of first sleeve has multiple lugs, described
There is multiple first grooves and multiple second grooves on the inwall of two sleeves, wherein：
First groove is axially extended, and second groove is circumferentially；
Each first groove is connected with multiple second grooves, and multiple described second connected with first groove
Groove is located at the same side of first groove；
The lug and first groove and second groove match, so that the second sleeve is in the first work shape
During state, the lug can be moved axially in the first groove；When the second sleeve is in the second working condition, the lug
It is placed in the second groove and keeps axial geo-stationary relative to second groove.
4. prosthese as claimed in claim 3, it is characterised in that
The second sleeve is configured as that the rotation of second sleeve axis can be surrounded；
Under action of alternating magnetic field, the second sleeve rotates around the axis of second sleeve clockwise, drives the first set
Cylinder prolongs axially to during the movement of distal end, and second groove is arranged on the left of first groove；Under action of alternating magnetic field, institute
Axis of the second sleeve counterclockwise around second sleeve is stated to rotate, drive first sleeve prolong axially to distal end it is mobile when, institute
State the right side that the second groove is arranged in first groove.
5. the prosthese as described in claim 4 or 5, it is characterised in that the one end of second groove away from first groove
Flexible body, the elastomer is used for lug described in clamping.
6. prosthese as claimed in claim 1, it is characterised in that the prosthese also includes setting outside thread spindle, the thread spindle
There is external screw thread, and fixed with the shell, the first sleeve coaxial sleeve is connected to the outside of the thread spindle, first sleeve
Inwall on have and the internal thread that matches of the thread spindle external screw thread；
When the second sleeve is in the first working condition, the second sleeve drives the first sleeve around the axis of second sleeve
Rotation, and then prolong axial movement.
7. prosthese as claimed in claim 6, it is characterised in that first sleeve is extended in the thread spindle distal end, and prolongs
Extend into the 3rd sleeve, the prosthese also includes at least one first latch, at least one the 4th latch, and described first inserts
Pin is fixed on the near-end of the thread spindle, and the two ends extension of the first latch is fixed with the shell simultaneously, described at least one
4th latch is fixed on the distal end of the thread spindle, and the two ends of the 4th latch are extended through after the 3rd sleeve with outside simultaneously
Shell is fixed, so that the thread spindle is fixed with the shell.
8. prosthese as claimed in claim 1, it is characterised in that the limitation resistor includes end cap, the first thrust ball bearing, the
Two thrust ball bearings and the 3rd latch,
First thrust ball bearing, the second thrust ball bearing is located at the distal end of first sleeve, and the end cap is located at
The distal end of first thrust ball bearing and the second thrust ball bearing, and be detachably fixed and be connected with first sleeve, so that
First thrust ball bearing and the second thrust ball bearing are relative to the first sleeve holding shaft to geo-stationary；
The end of the 3rd sleeve and the first sleeve connection end has an outward flange, and the outward flange is located at described first
Between thrust ball bearing and the second thrust ball bearing；
The 3rd sleeve has a 4th axially extending groove, and the 3rd latch passes through the 4th groove, and described
The two ends extension of 3rd latch is fixedly connected with the shell.
9. prosthese as claimed in claim 1, it is characterised in that the limiter assembly includes end cap, double-direction thrust ball bearing and
3rd latch,
The double-direction thrust ball bearing is located at the distal end of first sleeve, and the end cap is located at the two-way thrust ball axle
The distal end held, and be detachably connected with first sleeve, so that the double-direction thrust ball bearing is kept relative to the first sleeve
It is axially opposing static；
The 3rd sleeve is fixedly connected with the blowout patche of the double-direction thrust ball bearing；
The 3rd sleeve has the 4th groove, and the 3rd latch passes through the 4th groove, and the two of the 3rd latch
End extension is fixedly connected with the shell.
10. prosthese as claimed in claim 8 or 9, it is characterised in that the 3rd sleeve at least distal end is shaped as prism
Shape, the prosthese also includes the 5th sleeve being contained in the shell, and the 5th sleeve is located at the distal end of the shell, and
It is fixedly connected with shell, the 5th sleeve has a first inner chamber, at least partly described first inner chamber has and the described 3rd
The shape that the distal end shape of sleeve matches, is rotated with limiting 3rd sleeve.
11. prosthese as claimed in claim 10, it is characterised in that the prosthese also includes multiple second latches, the described 5th
At least one the 5th axially extending groove is provided between the outer wall and shell of sleeve, the second latch insertion the described 5th is recessed
Groove, is enclosed with to limit the 5th sleeve and rotated about the axis.
12. prosthese as claimed in claim 1, it is characterised in that the prosthese also includes 4th sleeve, the 3rd thrust ball bearing
With the 4th thrust ball bearing,
The 4th sleeve, which is located at, to be contained in the shell, the distal end of the second sleeve, and the 4th sleeve and is configured as
Axial geo-stationary is kept relative to the shell, the 3rd thrust ball bearing is located between the second sleeve and shell,
4th thrust ball bearing is located between second sleeve and 4th sleeve, to realize the second sleeve relative to the shell
Axial geo-stationary is kept, and can be around the rotation of second sleeve axis.
13. prosthese as claimed in claim 13, it is characterised in that the prosthese also includes 5th sleeve, shell cap, the described 5th
Sleeve is contained in the shell, and positioned at the distal end of the 4th sleeve, the shell cap is located at the distal end of the shell, and described
Shell to be detachably connected, make the second sleeve, the 4th sleeve and the 5th sleeve in the axial direction with the shell
Keep geo-stationary；Shell cap described in the shell cap has second inner chamber so that the 3rd sleeve by the second inner chamber simultaneously
Extend to the distal end of the shell cap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661342.1A CN107260368B (en) | 2017-08-04 | 2017-08-04 | Prosthesis |
| PCT/CN2018/095453 WO2019024666A1 (en) | 2017-08-04 | 2018-07-12 | Prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710661342.1A CN107260368B (en) | 2017-08-04 | 2017-08-04 | Prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107260368A true CN107260368A (en) | 2017-10-20 |
| CN107260368B CN107260368B (en) | 2020-01-24 |
Family
ID=60076114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710661342.1A Active CN107260368B (en) | 2017-08-04 | 2017-08-04 | Prosthesis |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107260368B (en) |
| WO (1) | WO2019024666A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019227859A1 (en) * | 2018-05-31 | 2019-12-05 | 上海微创医疗器械（集团）有限公司 | Support structure, prosthesis, and prosthesis system |
| CN110584841A (en) * | 2019-09-30 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Extendable prosthesis |
| CN111920502A (en) * | 2020-10-12 | 2020-11-13 | 上海微创医疗器械（集团）有限公司 | Distractor and distractor system |
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| JP2009254804A (en) * | 2008-03-24 | 2009-11-05 | Japan Medical Materials Corp | In vivo actuator and bone adjustment apparatus |
| CN102293678A (en) * | 2010-03-23 | 2011-12-28 | 阿诺·苏贝朗 | Device for displacement of tissue, in particular bone tissue |
| US20120209269A1 (en) * | 2011-02-14 | 2012-08-16 | Ellipse Tecnologies, Inc. | Variable length device and method |
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| WO2019227859A1 (en) * | 2018-05-31 | 2019-12-05 | 上海微创医疗器械（集团）有限公司 | Support structure, prosthesis, and prosthesis system |
| CN110584841A (en) * | 2019-09-30 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Extendable prosthesis |
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| CN111920502A (en) * | 2020-10-12 | 2020-11-13 | 上海微创医疗器械（集团）有限公司 | Distractor and distractor system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107260368B (en) | 2020-01-24 |
| WO2019024666A1 (en) | 2019-02-07 |
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