CN209048365U - A kind of finger joint prosthesis structure - Google Patents
A kind of finger joint prosthesis structure Download PDFInfo
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- CN209048365U CN209048365U CN201721916328.3U CN201721916328U CN209048365U CN 209048365 U CN209048365 U CN 209048365U CN 201721916328 U CN201721916328 U CN 201721916328U CN 209048365 U CN209048365 U CN 209048365U
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- proximal end
- distal end
- prosthese
- joint
- setscrew
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- 210000001145 finger joint Anatomy 0.000 title claims abstract description 25
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910000771 Vitallium Inorganic materials 0.000 claims description 2
- 239000000602 vitallium Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 26
- 210000002435 tendon Anatomy 0.000 abstract description 13
- 230000005057 finger movement Effects 0.000 abstract description 11
- 208000010392 Bone Fractures Diseases 0.000 abstract description 10
- 206010017076 Fracture Diseases 0.000 abstract description 10
- 208000035965 Postoperative Complications Diseases 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 239000010952 cobalt-chrome Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 241000905957 Channa melasoma Species 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000003041 ligament Anatomy 0.000 description 2
- 210000000811 metacarpophalangeal joint Anatomy 0.000 description 2
- 206010039073 rheumatoid arthritis Diseases 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000016285 Movement disease Diseases 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 210000001513 elbow Anatomy 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model belongs to medical instruments field more particularly to a kind of finger joint prosthesis structure, including proximal end prosthese, joint component, distal end prosthese, rotary shaft；Proximal end prosthese includes proximal end prosthetic joint portion and proximal end prosthese shank, and joint component includes joint component head and joint component tail portion, and distal end prosthese includes proximal end prosthese head and proximal end prosthese shank；Wherein proximal end prosthetic joint portion and joint component head form axis by rotary shaft and are cooperatively connected, and joint component tail portion is connect with distal end prosthese head, and proximal end prosthese shank is threadedly coupled with proximal end setscrew, and distal end prosthese shank is threadedly coupled with distal end setscrew.The utility model has the beneficial effects that using semi-closed structure and ball fit structure in joint part, tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes moving obstacle, realize that universal rotational is more in line with the authentic activity range of human body Minor articulus, the risk of fracture is reduced, the function that postoperative complications preferably realize natural joint is reduced.
Description
Technical field
The utility model belongs to medical instruments field more particularly to a kind of pass suitable for carrying out hand and foot to human body
Save the finger joint prosthesis structure of displacement technique.
Background technique
The joint replacement of the large joints such as hip, knee, elbow, ankle has reached its maturity at present, and the Minor articulus such as similar metacarpophalangeal joints
Replace the primary stage still in development.China with Minor articulus inflammation, rheumatoid arthritis, joint deformity crowd mostly not
Receive the method for joint replacement surgery treatment, key reason be it is domestic at present almost without domestic finger joint prosthesis product,
And imported product is expensive, the remote super acceptable range of general public.Since metacarpophalangeal joints structure is complex, joint
Chronic ache, stiff, the lopsided decrease or forfeiture for leading to hand function, and finger joint prosthesis displacement technique, strictly a kind of alleviation
Arthralgia, the most effectual way for improving function of joint.
Existing import articulations digitorum manus product is divided into two kinds of structure major class, and one kind having rotation connecting shaft for two joint shanks
Restricted type articular prosthesis, another kind be two joint handles only have convex-concave be slidably matched without be mechanically connected fit structure it is non-
Restricted type articular prosthesis.The advantages of two kinds of structures have advantage and disadvantage, restricted type prosthese is that two joint handle prostheses are by centre
Axis connection is rotated, better stability can be brought, reduce the risk of dislocation, the requirement to ligament and muscle tissue is low, is suitble to institute
The patient of has age uses.Its disadvantage is.First, due to the freedom degree in only one direction of rotary shaft connecting component, and human body
There are the activities of multiple directions in the authentic activity of hand, so there is the risk of fracture.Second, mechanical connecting structure rotation
It is easy for muscle tendon tissue to be involved in simultaneously, causes pain and activity is blocked.The advantages of certain non-limiting examples prosthese is, the cooperation of ball mortar
Structure is best suitable for the natural structure of human synovial bone, but for the more demanding of ligament and muscle tissue, and there is dislocation
The operation requirement using certain non-limiting examples prosthese is not achieved in risk, most of person in middle and old age's rheumatoid arthritis patients.It is badly in need of one kind
Can existing issue overcome, be suitble to the restricted type finger joint prosthesis structure that all age composition patients are general.
Utility model content
It is semiclosed the present invention provides a kind of joint part and match with ball in order to solve the deficiency of the prior art and product
The finger joint prosthesis structure of conjunction, avoids pain and joint movement disorder caused by being involved in active procedure as tendon tissue.And
Certain left and right activity space is increased on the basis of existing restricted type finger joint prosthesis, and prosthese is made to be more in line with true people
Body articulations digitorum manus scope of activities eliminates the risk that dislocation is broken due to long-time stress fatigue.
The technical solution of the utility model includes: a kind of finger joint prosthesis structure, including proximal end prosthese, joint component, distal end vacation
Body, rotary shaft, it is characterised in that the proximal end prosthese and the joint component form axis by the rotary shaft and be cooperatively connected, institute
It states joint component to connect with the distal end prosthese, the proximal end prosthese other end is connect with proximal end setscrew, and the distal end is false
The body other end is connect with distal end setscrew；
Further, the proximal end prosthese includes proximal end prosthetic joint portion and proximal end prosthese shank, the joint component packet
Joint component head and joint component tail portion are included, the distal end prosthese includes distal end prosthese head and distal end prosthese shank；
Proximal end prosthetic joint portion and the joint component head form axis by the rotary shaft and are cooperatively connected, described
Joint component tail portion is connect with distal end prosthese head, and the proximal end prosthese shank and the proximal end setscrew screw thread connect
It connects, the distal end prosthese shank is threadedly coupled with the distal end setscrew.
Further, proximal end prosthetic joint portion has semiclosed cavity structure；Proximal end prosthetic joint portion center
Joint component mounting hole is arranged in place's setting rotation shaft mounting hole, proximal end prosthetic joint portion front end, and side rotates shaft mounting hole
Anti-back slot is arranged in inner wall, and location structure is arranged in other side rotary shaft inner wall of the hole installing, and the rotation shaft mounting hole corresponding half is sealed
The cambered surface groove that both ends in cavity structure are provided with is closed to match with the joint component head.
Further, the joint component head is integrally spherical in shape, the joint component head be symmetrical set two
A horn mouth, two horn mouth connections, diameter becomes larger the horn mouth from inside to outside；The joint component tail portion setting dress
With platform.
Further, the axially distributed a plurality of open slot of the rotary shaft, the rotary shaft tail portion setting retreating-proof are convex
Platform is matched with the anti-back slot, rotary shaft front end setting prism structure and frustum cone structure, the prism structure with it is described fixed
Bit architecture matching, the frustum cone structure is radially distributed cross open.
Further, there is centre bore in the proximal end prosthese shank, the centre bore is set close to the end prosthesis joint portion
It is equipped with internal screw thread, the internal screw thread is matched and connect with proximal end setscrew head external screw thread, the proximal end prosthese shank
Axially distributed a plurality of open slot.
Further, setting fitting groove in distal end prosthese head is matched with the assembly bench, the distal end prosthese shank
Inside there is centre bore, the centre bore is provided with internal screw thread, internal screw thread and the distal end setscrew head by distal end prosthese head
Portion's external screw thread is matched and is connected, the axially distributed a plurality of open slot of the end prosthesis shank.
Further, the proximal end setscrew is identical with the distal end setscrew structure, the proximal end setscrew
It is provided with plum blossom trough with distal end setscrew one end, the distance end setscrew and the distal end setscrew are another
One end is provided with ballhead expansion structure.
Further, the fitting groove uses dovetail groove, and the prism structure uses regular hexagonal prism.
Further, the proximal end prosthese, the distal end prosthese, the rotary shaft, the setscrew, setscrew are adopted
With titanium alloy, vitallium or stainless steel；The joint component uses ultra high molecular polyethylene.
The utility model beneficial effect is: structure is simple, and design rationally, in proximal end prosthetic joint portion has semiclosed cavity
Structure and whole joint component head spherical in shape form fit structure, and tendon is involved in when preventing finger movement to greatest extent
Moving obstacle is caused in rotation axis, is realized that universal rotational is more in line with the authentic activity range of human body Minor articulus, is reduced fracture
Risk reduces the function that postoperative complications preferably realize natural joint.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the decomposition of the embodiments of the present invention 1.
Fig. 2 is the structural schematic diagram of the assembly of the embodiments of the present invention 1.
Fig. 3 is the structural block diagram of the proximal end prosthese of the embodiments of the present invention 2 and 3.
Fig. 4 is the structural block diagram at another visual angle of the proximal end prosthese of the embodiments of the present invention 2 and 3.
Fig. 5 is the structural schematic diagram of the joint component of the embodiments of the present invention 2 and 3.
Fig. 6 is the structural schematic diagram of the rotary shaft of the embodiments of the present invention 2 and 3.
Fig. 7 is the structural schematic diagram of the distal end prosthese of the embodiments of the present invention 3.
Fig. 8 is the proximal end setscrew of the embodiments of the present invention 3 and the structural schematic diagram of distal end setscrew.
In figure: 1, proximal end prosthese, 2, joint component, 3, distal end prosthese, 4, rotary shaft, 5, proximal end setscrew, 6, distal end
Setscrew, 7, proximal end prosthetic joint portion, 8, proximal end prosthese shank, 9, joint component head, 10, joint component tail portion, 11, remote
End prosthesis head, 12, distal end prosthese shank, 13, rotation shaft mounting hole, 14, mounting hole, 15, anti-back slot, 16, location structure,
17, semiclosed cavity structure, 18, prism structure, 19, cambered surface groove, 20, horn mouth, 21, assembly bench, 22, open slot, 23, anti-
Exit boss, 24, internal screw thread, 25, frustum cone structure, 26, cross open, 27, fitting groove, 28, centre bore, 29, external screw thread, 30,
Plum blossom trough, 31, ballhead expansion structure, 32, ladder platform.
Specific embodiment
It explains with reference to the accompanying drawing to a kind of specific embodiment of the utility model.
A kind of finger joint prosthesis structure, including proximal end prosthese 1, joint component 2, distal end prosthese 3, rotary shaft 4, proximal end prosthese
1 and joint component 2 axis is formed by rotary shaft 4 and is cooperatively connected, realize joint flexible rotating, realize the joint component 2 in joint with
Distal end prosthese 1 connects, and prosthese 1 other end in proximal end is connect with proximal end setscrew 5,3 other end of distal end prosthese and distal end expanding screw
Silk 6 connects；The pulp cavity for being inserted into joint both ends respectively of proximal end setscrew 5 and distal end setscrew 6,5 He of proximal end setscrew
Distal end setscrew 6 plays the role of pre- retreating-proof.
Proximal end prosthese 1 includes proximal end prosthetic joint portion 7 and proximal end prosthese shank 8, and joint component 2 includes joint component head
9 and joint component tail portion 10, distal end prosthese 3 includes distal end prosthese head 11 and distal end prosthese shank 12；Proximal end prosthetic joint portion 7
Axis being formed by rotary shaft 4 with joint component head 9 to be cooperatively connected, joint component tail portion 10 is connect with distal end prosthese head 11,
Proximal end prosthese shank 8 is threadedly coupled with proximal end setscrew 5, and distal end prosthese shank 12 is threadedly coupled with distal end setscrew 5.It is whole
Body structure is simple, and design rationally, in proximal end prosthetic joint portion has semiclosed cavity structure and whole joint component spherical in shape
Head forms fit structure, and tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes moving obstacle, realizes
Universal rotational is more in line with the authentic activity range of human body Minor articulus, reduces the risk of fracture, and it is better to reduce postoperative complications
Realize the function of natural joint.
Proximal end prosthetic joint portion 7 has semiclosed cavity structure 17；Rotary shaft is arranged at 7 center of proximal end prosthetic joint portion to pacify
Hole 13 is filled, for assembling rotary shaft 4, joint component mounting hole 14 is arranged in 7 front end of proximal end prosthetic joint portion, for assembling joint portion
Part, side rotate 13 inner wall of shaft mounting hole and anti-back slot 15 are arranged, and prevent insertion rotary shaft 4 from exiting, the other side rotates shaft mounting hole
Location structure 16 is arranged in 13 inner walls, matches with the prism structure 18 of rotary shaft 4, realizes positioning, prevents from shifting, rotary shaft installation
The cambered surface groove 19 that both ends are provided in the corresponding semiclosed cavity structure 17 in hole 13 matches with joint component head 9, two this
Contact surface matching and it is smooth, realize rotation it is smooth.
Joint component head 9 is whole spherical in shape, and surface is smooth, and joint component head 9 passes through the peace in proximal end prosthetic joint portion 7
It fills hole 14 and enters semiclosed cavity structure 17, tendon, which is involved in, when realizing rotation, while preventing finger movement to greatest extent turns
Moving obstacle, two horn mouths 20 that joint component head 9 is symmetrical set are caused in moving axis, two horn mouths 20 are connected to,
Diameter becomes larger horn mouth 20 from inside to outside, increases certain left and right activity space, so that prosthese is more in line with true human body and refers to
Range of motion eliminates the risk that dislocation is broken due to long-time stress fatigue.
Universal rotational in the range of two 20 opening angles of horn mouth allow, and realize universal rotational and be more in line with people
The authentic activity range of body Minor articulus；Assembly bench 21 is arranged in joint component tail portion 10, easy to operate, facilitates joint component 2 and distal end
Prosthese 3 connects.There is semiclosed cavity structure 17 and whole 9 shape of joint component head spherical in shape in proximal end prosthetic joint portion 7
At fit structure, when preventing finger movement to greatest extent, tendon, which is involved in rotation axis, causes moving obstacle, joint component head
Two horn mouths 20 that portion 9 is symmetrical set realize that universal rotational is more in line with the authentic activity range of human body Minor articulus, drop
The risk of low fracture reduces the function that postoperative complications preferably realize natural joint.
Retreating-proof boss 23 and anti-back slot 15 is arranged in the axially distributed a plurality of open slot 22 of rotary shaft 4,4 tail portion of rotary shaft
Matching, 2 backed off after random of proximal end prosthese 1 and joint component that rotary shaft 4 prevents plugging in fitting good, 4 setting prism structures of rotary shaft
18 and frustum cone structure 25, prism structure 18 matched with location structure 16, frustum cone structure 25 is radially distributed cross open 26, side
Just utility assembles rotary shaft 4.
There is centre bore 28 in proximal end prosthese shank 8, centre bore 28 is provided with internal screw thread 24, interior spiral shell close to end prosthesis joint portion
Line 24 is matched and is connect, the axially distributed a plurality of open slot of proximal end prosthese shank 8 with 5 head external screw thread 29 of proximal end setscrew
22.Proximal end prosthese shank 8 is equipped with ladder platform 32, and after proximal end setscrew 5 is inserted into proximal end prosthesis handle 8, proximal end prosthesis handle 8 along axis
To 22 distending of open slot, to have the function that hold the pre- retreating-proof of pulp cavity tightly.
Distal end prosthese head 11 is arranged fitting groove 27 and matches with assembly bench 21, and joint component 2 and distal end prosthese 3 is facilitated to connect
It connects, there is centre bore 28 in distal end prosthese shank 12, centre bore 28 is provided with internal screw thread 24, internal screw thread 24 by distal end prosthese head 11
It matches and connect, the axially distributed a plurality of open slot 22 of distal end prosthese shank with 6 head external screw thread 29 of distal end setscrew, far
End prosthesis shank 12 is equipped with ladder platform 32, after distal end setscrew 6 is inserted into distal end prosthese shank 12,12 edges of distal end prosthese shank
22 distending of shaft orientation opening groove, to have the function that hold the pre- retreating-proof of pulp cavity tightly.
Proximal end setscrew 5 is identical with 6 structure of distal end setscrew, 6 one end of proximal end setscrew 5 and distal end setscrew
It is provided with plum blossom trough 30, the use of dedicated plum blossom screwdriver is that there are four the nearly distal ends being open to band while setscrew retreats
Prosthese shank pressurizes outward makes its distending, to have the function that hold the pre- retreating-proof of pulp cavity tightly, proximal end setscrew and distal end are swollen
The swollen screw other end is provided with ballhead expansion structure 31, defines the insertion of proximal end setscrew 5 and distal end setscrew 6
Depth prevents from being inserted into too deep.
Fitting groove 27 uses dovetail groove, and realization easy to process facilitates joint component 2 and distal end prosthese 3 to assemble, structure after dress
Securely, prism structure 18 uses regular hexagonal prism, and realization easy to process facilitates the positioning for realizing rotation axis, prevents from shifting.
Proximal end prosthese 1, distal end prosthese 3, rotary shaft 4, proximal end setscrew 5, distal end setscrew 6 use titanium alloy, cobalt
Chrome molybdenum or stainless steel, intensity is big, wear-resistant；Joint component 2 uses ultra high molecular polyethylene, wearability with super strength,
Self-lubrication, the activity suitable for joint component.
Embodiment 1
A kind of finger joint prosthesis structure, including proximal end prosthese 1, joint component 2, distal end prosthese 3, rotary shaft 4, proximal end prosthese
1 and joint component 2 axis is formed by rotary shaft 4 and is cooperatively connected, realize joint flexible rotating, realize the joint component 2 in joint with
Distal end prosthese 1 connects, and prosthese 1 other end in proximal end is connect with proximal end setscrew 5,3 other end of distal end prosthese and distal end expanding screw
Silk 6 connects；The pulp cavity for being inserted into joint both ends respectively of proximal end setscrew 5 and distal end setscrew 6,5 He of proximal end setscrew
Distal end setscrew 6 plays the role of pre- retreating-proof.
Proximal end prosthese 1 includes proximal end prosthetic joint portion 7 and proximal end prosthese shank 8, and joint component 2 includes joint component head
9 and joint component tail portion 10, distal end prosthese 3 includes distal end prosthese head 11 and distal end prosthese shank 12；Proximal end prosthetic joint portion 7
Axis being formed by rotary shaft 4 with joint component head 9 to be cooperatively connected, joint component tail portion 10 is connect with distal end prosthese head 11,
Proximal end prosthese shank 8 is threadedly coupled with proximal end setscrew 5, and distal end prosthese shank 12 is threadedly coupled with distal end setscrew 5.It is whole
Body structure is simple, and design rationally, in proximal end prosthetic joint portion has semiclosed cavity structure and whole joint component spherical in shape
Head forms fit structure, and tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes moving obstacle, realizes
Universal rotational is more in line with the authentic activity range of human body Minor articulus, reduces the risk of fracture, and it is better to reduce postoperative complications
Realize the function of natural joint.
Embodiment 2
A kind of finger joint prosthesis structure, including proximal end prosthese 1, joint component 2, distal end prosthese 3, rotary shaft 4, proximal end prosthese
1 and joint component 2 axis is formed by rotary shaft 4 and is cooperatively connected, realize joint flexible rotating, realize the joint component 2 in joint with
Distal end prosthese 1 connects, and prosthese 1 other end in proximal end is connect with proximal end setscrew 5,3 other end of distal end prosthese and distal end expanding screw
Silk 6 connects；The pulp cavity for being inserted into joint both ends respectively of proximal end setscrew 5 and distal end setscrew 6,5 He of proximal end setscrew
Distal end setscrew 6 plays the role of pre- retreating-proof.
Proximal end prosthese 1 includes proximal end prosthetic joint portion 7 and proximal end prosthese shank 8, and joint component 2 includes joint component head
9 and joint component tail portion 10, distal end prosthese 3 includes distal end prosthese head 11 and distal end prosthese shank 12；Proximal end prosthetic joint portion 7
Axis being formed by rotary shaft 4 with joint component head 9 to be cooperatively connected, joint component tail portion 10 is connect with distal end prosthese head 11,
Proximal end prosthese shank 8 is threadedly coupled with proximal end setscrew 5, and distal end prosthese shank 12 is threadedly coupled with distal end setscrew 5.It is whole
Body structure is simple, and design rationally, in proximal end prosthetic joint portion has semiclosed cavity structure and whole joint component spherical in shape
Head forms fit structure, and tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes moving obstacle, realizes
Universal rotational is more in line with the authentic activity range of human body Minor articulus, reduces the risk of fracture, and it is better to reduce postoperative complications
Realize the function of natural joint.
Proximal end prosthetic joint portion 7 has semiclosed cavity structure 17；Rotary shaft is arranged at 7 center of proximal end prosthetic joint portion to pacify
Hole 13 is filled, for assembling rotary shaft 4, joint component mounting hole 14 is arranged in 7 front end of proximal end prosthetic joint portion, for assembling joint portion
Part, side rotate 13 inner wall of shaft mounting hole and anti-back slot 15 are arranged, and prevent insertion rotary shaft 4 from exiting, the other side rotates shaft mounting hole
Location structure 16 is arranged in 13 inner walls, matches with the prism structure 18 of rotary shaft 4, realizes positioning, prevents from shifting, rotary shaft installation
The cambered surface groove 19 that both ends are provided in the corresponding semiclosed cavity structure 17 in hole 13 matches with joint component head 9, two this
Contact surface matching and it is smooth, realize rotation it is smooth.
Joint component head 9 is whole spherical in shape, and surface is smooth, and joint component head 9 passes through the peace in proximal end prosthetic joint portion 7
It fills hole 14 and enters semiclosed cavity structure 17, tendon, which is involved in, when realizing rotation, while preventing finger movement to greatest extent turns
Moving obstacle, two horn mouths 20 that joint component head 9 is symmetrical set are caused in moving axis, two horn mouths 20 are connected to,
Diameter becomes larger horn mouth 20 from inside to outside, increases certain left and right activity space, so that prosthese is more in line with true human body and refers to
Range of motion eliminates the risk that dislocation is broken due to long-time stress fatigue.In two 20 opening angles of horn mouth
Universal rotational in the range of permission, and realize the authentic activity range that universal rotational is more in line with human body Minor articulus；Joint portion
Assembly bench 21 is arranged in part tail portion 10, easy to operate, and joint component 2 is facilitated to connect with distal end prosthese 3.Have in proximal end prosthetic joint portion 7
There are semiclosed cavity structure 17 and whole joint component head 9 spherical in shape to form fit structure, prevents hand to greatest extent
Tendon, which is involved in rotation axis, when finger activity causes moving obstacle, two horn mouths 20 that joint component head 9 is symmetrical set
It realizes that universal rotational is more in line with the authentic activity range of human body Minor articulus, reduces the risk of fracture, reduce postoperative complications more
The function of good realization natural joint.
Retreating-proof boss 23 and anti-back slot 15 is arranged in the axially distributed a plurality of open slot 22 of rotary shaft 4,4 tail portion of rotary shaft
Matching, 2 backed off after random of proximal end prosthese 1 and joint component that rotary shaft 4 prevents plugging in fitting good, 4 setting prism structures of rotary shaft
18 and frustum cone structure 25, prism structure 18 matched with location structure 16, frustum cone structure 25 is radially distributed cross open 26, side
Just utility assembles rotary shaft 4.
Proximal end prosthese 1, distal end prosthese 3, rotary shaft 4, proximal end setscrew 5, distal end setscrew 6 use titanium alloy, cobalt
Chrome molybdenum or stainless steel, intensity is big, wear-resistant；Joint component 2 uses ultra high molecular polyethylene, wearability with super strength,
Self-lubrication, the activity suitable for joint component.
Embodiment 3
A kind of finger joint prosthesis structure, including proximal end prosthese 1, joint component 2, distal end prosthese 3, rotary shaft 4, proximal end prosthese
1 and joint component 2 axis is formed by rotary shaft 4 and is cooperatively connected, realize joint flexible rotating, realize the joint component 2 in joint with
Distal end prosthese 1 connects, and prosthese 1 other end in proximal end is connect with proximal end setscrew 5,3 other end of distal end prosthese and distal end expanding screw
Silk 6 connects；The pulp cavity for being inserted into joint both ends respectively of proximal end setscrew 5 and distal end setscrew 6,5 He of proximal end setscrew
Distal end setscrew 6 plays the role of pre- retreating-proof.
Proximal end prosthese 1 includes proximal end prosthetic joint portion 7 and proximal end prosthese shank 8, and joint component 2 includes joint component head
9 and joint component tail portion 10, distal end prosthese 3 includes distal end prosthese head 11 and distal end prosthese shank 12；Proximal end prosthetic joint portion 7
Axis being formed by rotary shaft 4 with joint component head 9 to be cooperatively connected, joint component tail portion 10 is connect with distal end prosthese head 11,
Proximal end prosthese shank 8 is threadedly coupled with proximal end setscrew 5, and distal end prosthese shank 12 is threadedly coupled with distal end setscrew 5.It is whole
Body structure is simple, and design rationally, in proximal end prosthetic joint portion has semiclosed cavity structure and whole joint component spherical in shape
Head forms fit structure, and tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes moving obstacle, realizes
Universal rotational is more in line with the authentic activity range of human body Minor articulus, reduces the risk of fracture, and it is better to reduce postoperative complications
Realize the function of natural joint.
Proximal end prosthetic joint portion 7 has semiclosed cavity structure 17；Rotary shaft is arranged at 7 center of proximal end prosthetic joint portion to pacify
Hole 13 is filled, for assembling rotary shaft 4, joint component mounting hole 14 is arranged in 7 front end of proximal end prosthetic joint portion, for assembling joint portion
Part, side rotate 13 inner wall of shaft mounting hole and anti-back slot 15 are arranged, and prevent insertion rotary shaft 4 from exiting, the other side rotates shaft mounting hole
Location structure 16 is arranged in 13 inner walls, matches with the prism structure 18 of rotary shaft 4, realizes positioning, prevents from shifting, rotary shaft installation
The cambered surface groove 19 that both ends are provided in the corresponding semiclosed cavity structure 17 in hole 13 matches with joint component head 9, two this
Contact surface matching and it is smooth, realize rotation it is smooth.
Joint component head 9 is whole spherical in shape, and surface is smooth, and joint component head 9 passes through 7 front end of proximal end prosthetic joint portion
Mounting hole 14 enter semiclosed cavity structure 17, realize rotation, while tendon is rolled up when preventing finger movement to greatest extent
Enter and cause moving obstacle in rotation axis, two horn mouths 20 that joint component head 9 is symmetrical set, two horn mouths 20 connect
Logical, diameter becomes larger horn mouth 20 from inside to outside, universal rotational in the range of two 20 opening angles of horn mouth allow, and realizes
Universal rotational is more in line with the authentic activity range of human body Minor articulus；Assembly bench 21 is arranged in joint component tail portion 10, easy to operate,
Joint component 2 is facilitated to connect with distal end prosthese 3.There is semiclosed cavity structure 17 in proximal end prosthetic joint portion 7 and entirety is in ball
The joint component head 9 of shape forms fit structure, and tendon, which is involved in rotation axis, when preventing finger movement to greatest extent causes
Moving obstacle, two horn mouths 20 that joint component head 9 is symmetrical set realize that universal rotational is more in line with human body little Guan
The authentic activity range of section reduces the risk of fracture, reduces the function that postoperative complications preferably realize natural joint.
Retreating-proof boss 23 and anti-back slot 15 is arranged in four axially distributed open slots 22 of rotary shaft 4,4 tail portion of rotary shaft
Prism knot is arranged in matching, 2 backed off after random of proximal end prosthese 1 and joint component that rotary shaft 4 prevents plugging in fitting good, 4 front end of rotary shaft
Structure 18 and frustum cone structure 25, prism structure 18 are matched with location structure 16, and frustum cone structure 25 is radially distributed cross open 26,
Convenient and practical tool assembles rotary shaft 4.
There is centre bore 28 in proximal end prosthese shank 8, centre bore 28 is provided with internal screw thread, internal screw thread close to end prosthesis joint portion
It matches and connect, four axially distributed open slots 22 of proximal end prosthese shank 8 with 5 head external screw thread 29 of proximal end setscrew.
Proximal end prosthese shank 8 is equipped with ladder platform 32, and prosthese shank 8 boring in proximal end simultaneously has four axially distributed cross opens
Expandable structure, after proximal end setscrew 5 is inserted into proximal end prosthesis handle 8, proximal end prosthesis handle 8 along 22 distending of shaft orientation opening groove,
To have the function that hold the pre- retreating-proof of pulp cavity tightly.
Distal end prosthese head 11 is arranged fitting groove 27 and matches with assembly bench 21, and joint component 2 and distal end prosthese 3 is facilitated to connect
It connects, there is centre bore 28 in distal end prosthese shank 12, centre bore 28 is provided with internal screw thread by distal end prosthese head 11, internal screw thread and remote
End 6 head external screw thread 29 of setscrew is matched and is connected, four axially distributed open slots 22 of distal end prosthese shank, and distal end is false
Body shank 12 is equipped with ladder platform 32, and nearly 12 boring of distal end prosthese shank simultaneously has four axially distributed cross opens
Expandable structure, after distal end setscrew 6 is inserted into distal end prosthese shank 12, distal end prosthese shank 12 is swollen along shaft orientation opening groove 22
It opens, to have the function that hold the pre- retreating-proof of pulp cavity tightly.
Proximal end setscrew 5 is identical with 6 structure of distal end setscrew, 6 one end of proximal end setscrew 5 and distal end setscrew
It is provided with plum blossom trough 30, the use of dedicated plum blossom screwdriver is that there are four the nearly distal ends being open to band while setscrew retreats
Prosthese shank pressurizes outward makes its distending, to have the function that hold the pre- retreating-proof of pulp cavity tightly, proximal end setscrew and distal end are swollen
The swollen screw other end is provided with ballhead expansion structure 31, defines the insertion of proximal end setscrew 5 and distal end setscrew 6
Depth prevents from being inserted into too deep.
Fitting groove 27 uses dovetail groove, and realization easy to process facilitates joint component 2 and distal end prosthese 3 to assemble, structure after dress
Securely, prism structure uses regular hexagonal prism, and realization easy to process facilitates the positioning for realizing rotation axis, prevents from shifting.
Proximal end prosthese 1, distal end prosthese 3, rotary shaft 4, proximal end setscrew 5, distal end setscrew 6 use titanium alloy, cobalt
Chrome molybdenum or stainless steel, intensity is big, wear-resistant；Joint component 2 uses ultra high molecular polyethylene, wearability with super strength,
Self-lubrication, the activity suitable for joint component.
The operation installation steps of finger joint prosthesis structure:
Proximal end setscrew 5 and the installation with proximal end prosthese 1 and distal end prosthese 3 respectively of distal end setscrew 6: proximal end is swollen
Swollen screw 5 and distal end setscrew 6 are assembled together with proximal end prosthese 1 and distal end prosthese 3 by being threadedly engaged respectively, will be assembled
The good proximal end prosthese 1 and distal end prosthese 3 with proximal end setscrew 5 and distal end setscrew 6 is inserted into joint both ends respectively
Pulp cavity acts on the plum blossom trough 30 of proximal end setscrew 5 and distal end setscrew 6 using dedicated plum blossom screwdriver at this time, makes close
End setscrew 5, distal end setscrew 6 retreat the centre bore 28 into proximal end prosthese shank 8, distal end prosthese shank 12 respectively,
To band, there are four proximal end prosthese shank 8, the distal end prosthese shanks 12 of open slot to make its distending to external pressurized simultaneously, embraces to reach
The effect of the pre- retreating-proof of tight pulp cavity.
The installation of joint component: the assembly bench 21 of joint component tail portion 10 is connected with distal end prosthese head 11 by fitting groove 27
It connects, specifically fitting groove 27 is using not dovetail groove；
Whole joint component head 9 spherical in shape enters semiclosed sky by the mounting hole 14 of 7 front end of proximal end prosthetic joint portion
Cavity configuration 17 is chained together by rotary shaft 4, is formed joint component 4 and the cooperation of 1 ball of proximal end prosthese, is cooperated with 4 axis of rotary shaft
Effect.Wherein 4 front end of rotary shaft is entered using the prism structure 18 of regular hexagonal prism and is determined in the rotation shaft mounting hole 13 of slotting one end
Bit architecture 16, the retreating-proof boss 23 of 4 end of rotary shaft are depressed into the anti-back slot 15 of other end rotation 13 inner wall of shaft mounting hole setting
Place is automatically locked, and plays the role of preventing from exiting, and completes operation.
Compared with prior art, the advantageous effects that the present invention can be realized are: human body fingers and palms Bones and joints are not only deposited
In the rotary freedom along a plane, certain swing and rotary moveable is existed simultaneously.Joint component head of the invention
Portion is spherical structure, is open simultaneous with two loudspeaker, can allow for it is certain swing and rotary moveable, fundamentally shut out
Absolutely as long-time fatigue stress and caused by joint risk of breakage.
An example of the utility model is described in detail above, but content is only the preferable reality of the utility model
Example is applied, should not be considered as limiting the scope of the present invention.Equalization made according to the scope of application of this utility model
Variation and improvement etc., should still belong within the patent covering scope of the utility model.
Claims (10)
1. a kind of finger joint prosthesis structure, including proximal end prosthese, joint component, distal end prosthese, rotary shaft, it is characterised in that described
Proximal end prosthese and the joint component form axis by the rotary shaft and are cooperatively connected, the joint component and the distal end prosthese
Connection, the proximal end prosthese other end are connect with proximal end setscrew, and the distal end prosthese other end and distal end setscrew connect
It connects.
2. a kind of finger joint prosthesis structure according to claim 1, it is characterised in that the proximal end prosthese includes proximal end vacation
Body joint portion and proximal end prosthese shank, the joint component include joint component head and joint component tail portion, and the distal end is false
Body includes distal end prosthese head and distal end prosthese shank；
Proximal end prosthetic joint portion and the joint component head form axis by the rotary shaft and are cooperatively connected, the joint
Component tail portion is connect with distal end prosthese head, and the proximal end prosthese shank is threadedly coupled with the proximal end setscrew, institute
Distal end prosthese shank is stated to be threadedly coupled with the distal end setscrew.
3. a kind of finger joint prosthesis structure according to claim 2, it is characterised in that proximal end prosthetic joint portion has
Semiclosed cavity structure；It is arranged at proximal end prosthetic joint portion center and rotates shaft mounting hole, before proximal end prosthetic joint portion
Anti-back slot is arranged in end setting joint component mounting hole, side rotary shaft inner wall of the hole installing, and other side rotary shaft inner wall of the hole installing is set
Location structure is set, it is described to rotate the cambered surface groove and the pass that both ends are provided in the corresponding semiclosed cavity structure of shaft mounting hole
Section fitting head matches.
4. a kind of finger joint prosthesis structure according to claim 3, it is characterised in that the joint component head is integrally in
Spherical shape, two horn mouths that the joint component head is symmetrical set, two horn mouths connections, the horn mouth by
It is interior to become larger to overall diameter；Assembly bench is arranged in the joint component tail portion.
5. a kind of finger joint prosthesis structure according to claim 4, it is characterised in that the rotary shaft is axially distributed
A plurality of open slot, the rotary shaft tail portion setting retreating-proof boss are matched with the anti-back slot, and rib is arranged in the rotary shaft front end
Rod structure and frustum cone structure, the prism structure are matched with the location structure, and the frustum cone structure is radially distributed cross
Opening.
6. a kind of finger joint prosthesis structure according to claim 5, it is characterised in that in having in the proximal end prosthese shank
Heart hole, the centre bore are provided with internal screw thread, the internal screw thread and the proximal end setscrew close to the end prosthesis joint portion
Head external screw thread is matched and is connected, the axially distributed a plurality of open slot of the proximal end prosthese shank.
7. a kind of finger joint prosthesis structure according to claim 6, it is characterised in that distal end prosthese head setting dress
Slot allocation is matched with the assembly bench, there is centre bore in the distal end prosthese shank, and the centre bore is set by distal end prosthese head
It is equipped with internal screw thread, internal screw thread is matched and connect with distal end setscrew head external screw thread, and the distal end prosthese shank is along axis
To a plurality of open slot of distribution.
8. a kind of according to claim 1, any finger joint prosthesis structure in 2,3,5 or 7, it is characterised in that the proximal end is swollen
Swollen screw is identical with the distal end setscrew structure, and the proximal end setscrew and distal end setscrew one end are respectively provided with
There is plum blossom trough, the proximal end setscrew and the distal end setscrew other end are provided with ballhead expansion structure.
9. a kind of finger joint prosthesis structure according to claim 7, it is characterised in that the fitting groove uses dovetail groove, institute
Prism structure is stated using regular hexagonal prism.
10. a kind of according to claim 1, any finger joint prosthesis structure in 2,3,5 or 7, it is characterised in that the proximal end
Prosthese, the distal end prosthese, the rotary shaft, the setscrew, setscrew use titanium alloy, vitallium or stainless
Steel；The joint component uses ultra high molecular polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721916328.3U CN209048365U (en) | 2017-12-31 | 2017-12-31 | A kind of finger joint prosthesis structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721916328.3U CN209048365U (en) | 2017-12-31 | 2017-12-31 | A kind of finger joint prosthesis structure |
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| CN209048365U true CN209048365U (en) | 2019-07-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175542A (en) * | 2017-12-31 | 2018-06-19 | 天津市赛宁生物工程技术有限公司 | A kind of finger joint prosthesis structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175542A (en) * | 2017-12-31 | 2018-06-19 | 天津市赛宁生物工程技术有限公司 | A kind of finger joint prosthesis structure |
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Effective date of registration: 20240322 Address after: Room 302-2, Door 7, Building F, Haitai Green Industry Base, No. 6 Haitai Development Sixth Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300384 Patentee after: Tianjin Meilan Biotechnology Co.,Ltd. Country or region after: China Address before: Room 7-302, Building F, Haitai Green Industry Base, No. 6 Haitai Development Sixth Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300384 Patentee before: TIANJIN SANNIE BIOENGINEERING TECHNOLOGY Co.,Ltd. Country or region before: China |