CN109106484A - Expansible Medical rack compression set - Google Patents
Expansible Medical rack compression set Download PDFInfo
- Publication number
- CN109106484A CN109106484A CN201810866491.6A CN201810866491A CN109106484A CN 109106484 A CN109106484 A CN 109106484A CN 201810866491 A CN201810866491 A CN 201810866491A CN 109106484 A CN109106484 A CN 109106484A
- Authority
- CN
- China
- Prior art keywords
- support chip
- blade
- compression set
- medical rack
- support
- 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.)
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
-
- 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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/844—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents folded prior to deployment
Abstract
The present invention provides a kind of expansible Medical rack compression set, it include: at least two circumferential support pieces and the blade group between support chip, blade group includes multiple blades, blade side is slidably connected with a support chip, the other side and another support chip are rotatablely connected, multiple blades surround to form central through hole, the activity of blade can change the size of central through hole, to compress Medical rack, at least one in support chip is the duplex support chip for being not only provided with the slide contact part being slidably connected with blade but also being provided with the rotating junction of blade rotation connection.Compression set provided by the invention, one is the reduction of the quantity of support chip, can reduce production cost；Two are comparable to that a support chip is arranged between two groups of blade groups, i.e. thickness is reduced to half, this makes compression set when compressing Medical rack, improves the utilization rate of blade compresses Medical rack, the compression of Medical rack is more uniform, can be avoided Medical rack Local Contraction problem of non-uniform.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of expansible Medical rack compression sets.
Background technique
Medical rack, such as intravascular stent, prosthetic heart valve holder etc., are widely used in clinical medicine, pass through
Conduit enters the inside of body lumen and supports the lesion locations of body lumen, to realize treatment.Medical rack is usually by having
There is compressive state when swelling state and the conveying when release, such as is cut by the dilval bracket with shape memory function
It forms or stainless steel material is cut.
Before use, need to compress the Medical rack of larger size, and it is loaded into corresponding catheter delivery system
(according to the difference of Medical rack gauge size, the catheter delivery system of different model size may be selected), catheter delivery system is logical
Often enter the intracorporal implantation position of people along the lumen of human body.By taking aortic valve stent as an example, compressed aortic valve
Bracket is loaded into the loading section of catheter delivery system, and after guided through seal wire, catheter delivery system is led through Human Femoral Artery, drop
Artery, the arch of aorta enter aortic valve position, realize the displacement of aortic valve.
Currently used for compress Medical rack the usual volume of compression set is relatively bulky, manufacturing cost is higher, although
It can be used for multiple times, but it is there are inconvenient to carry, and in the problem using preceding disinfectant program complexity.
Summary of the invention
In view of this, volume is relatively small it is necessary to provide a kind of improved expansible Medical rack compression set, system
Make relative inexpensiveness.
The present invention provides a kind of expansible Medical rack compression set, comprising: at least two circumferential support pieces and is located at
Blade group between the support chip, the blade group include multiple blades, and the blade side connects with a support chip sliding
It connects, the other side and another support chip are rotatablely connected, and the multiple blade surrounds to form central through hole, the movable energy of the blade
Enough change the size of the central through hole, to compress Medical rack, at least one in the support chip for be both provided with it is described
The slide contact part that blade is slidably connected is provided with the duplex support chip with the rotating junction of blade rotation connection again.
Further, the rotating junction on the duplex support chip is axis hole, and the slide contact part is sliding slot.
Further, the length direction of each slide contact part is the radial direction of the corresponding support chip.
Further, the rotating junction on the duplex support chip and the slide contact part are around corresponding described
Support chip center is spaced setting one by one.
Further, the center of the rotating junction is located at using the support chip center as on the circumference in the center of circle；And/
Or, the center of the slide contact part is located at using the support chip center as on the circumference in the center of circle.
It further, further include support base, the support chip and the blade group are contained in the support base.
Further, each described support chip includes shank, and the shank is convexly equipped in the week of the corresponding support chip
Edge.
It further, further include fixed operation portion and movable operation portion, described in the fixed operation portion and at least two
A connection in support chip, the movable operation portion are connect with another at least two support chips, the fixation
Operation portion is capable of opposite with the position of the fixed corresponding support chip of the support base, and the movable operation portion be able to drive pair
The support chip is answered to rotate relative to support chip described in another, to change the size of the central through hole.
Further, the movable operation portion be slidably connected with the support base and/or the fixed operation portion with it is described
Support base is connected together.
Further, the partial circumferential of the support base be arc, the movable operation portion connect with the support base and
It can be along the arc sliding of the support base.
Further, the support base includes pedestal and the frame that connect with the pedestal, the pedestal and the frame
Frame surrounds the accommodating space for accommodating the support chip and the blade group, the support chip and the blade group jointly
In the accommodating space.
Further, the pedestal is equipped with the limiting slot corresponding to the support chip, the lateral margin of each support chip
It is inserted into the limiting slot, the limiting slot limits the axial movement of the corresponding support chip.
Further, the pedestal is equipped with leakage fluid dram, and the leakage fluid dram is used for the liquid being discharged in the accommodating space.
Further, the frame, which is offered, is connected to the accommodating space and runs through setting for two reverse side of frame
Mouth, the central through hole and the storing mouth are put to positive setting.
Further, each described blade is arc-shaped, and the blade of multiple arcs is along the circumferential direction sequentially stacked, and
Mutually stagger predetermined arc.
Further, each described blade is obliquely installed relative to the central axes of the central through hole.
Further, each described blade is 0-5 degree relative to the inclined angular range in central axes of central through hole.
Further, the blade for being mounted on duplex support chip two sides is mutually mirror.
Further, the blade direction of motion for being mounted on duplex support chip two sides is opposite.
Further, the blade side is equipped with the shaft that can be rotatably assorted with the support chip, and another side is equipped with
The sliding block that can be slidably matched with the support chip.
Further, the side or top of the shaft are convexly equipped at least one first stop section, first stop section
Cooperate with the corresponding support chip or duplex support chip, limits the shaft and be detached from the corresponding support chip.
Further, first stop section is located at the side of shaft, and quantity is two, and two first stop sections are closed
The side of the shaft is symmetrically convexly equipped in the central axis of the shaft.
Further, the rotating junction is axis hole, and the inner wall of the axis hole offers evacuation first stop section
Escape groove.
Further, the side or top of the sliding block are convexly equipped with the second stop section, second stop section and the cunning
Rotation connection cooperation limits the sliding block and is detached from the corresponding support chip.
Further, second stop section is collar flange.
Further, the slide contact part is sliding slot, and the sliding slot inner wall is convexly equipped with blend stop, the blend stop and described the
The cooperation of two stop sections limits the sliding block and is detached from the corresponding support chip.
Further, the face that the blade is in contact with Medical rack is arc-shaped concave, and the arc-shaped concave surrounds described
Central through hole.
Further, the face that the blade is in contact with Medical rack is semicircle cambered surface.
The compression set provided by the invention, one is the reduction of the quantity of the support chip, can reduce production cost；
Two are comparable to only need to be arranged the support chip between the blade group described in two groups, i.e. thickness is reduced to half, this makes
The compression set is obtained when compressing Medical rack, improves the utilization rate of the blade compresses Medical rack, Medical rack
Compression more uniformly, can be avoided Medical rack Local Contraction problem of non-uniform.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of compression set in the embodiment of the present invention 1.
Fig. 2 is the decomposition diagram of compression set shown in Fig. 1.
Fig. 3 is the decomposition diagram at another visual angle of compression set shown in Fig. 2.
Fig. 4 is the decomposition diagram in support chip and fixed operation portion and movable operation portion.
Fig. 5 is the structural schematic diagram of support chip shown in Fig. 1.
Fig. 6 is the structural schematic diagram after compression set clipped structure shown in Fig. 1.
Fig. 7 is the structural schematic diagram of blade in the embodiment of the present invention 1.
Fig. 8 is the structural schematic diagram that two blades are connected to a support chip.
Fig. 9 is the structural schematic diagram that a blade is connected to a support chip.
Figure 10 is motion profile figure of the blade on support chip.
Working state figure when Figure 11 is five support chips and four groups of blade groups compression Medical racks.
Figure 12 is working state figure when one group of blade group compresses Medical rack.
Figure 13 is structural schematic diagram when compression set is in the first working condition.
Figure 14 is structural schematic diagram when compression set is in the second working condition.
Figure 15 is structural schematic diagram when compression set is in third working condition.
Figure 16 is five support chips in the embodiment of the present invention 2 not all using the structural schematic diagram of duplex support chip.
Figure 17 is the structural schematic diagram of three support chips in the embodiment of the present invention 3.
Figure 18 is the decomposition diagram of three support chips shown in Figure 17.
Figure 19 is the structural schematic diagram of two support chips in the embodiment of the present invention 4.
Figure 20 is the decomposition diagram of two support chips shown in Figure 19.
Figure 21 is the structural schematic diagram of blade in the embodiment of the present invention 5.
Figure 22 is the structural schematic diagram of support chip in the embodiment of the present invention 5.
Figure 23 is that 5 middle period of embodiment of the present invention piece is installed in the structural schematic diagram on support chip.
Figure 24 is the structural schematic diagram of blade in inventive embodiments 6.
Figure 25 is the structural schematic diagram of support chip in the embodiment of the present invention 6.
Main element symbol description
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned attached drawing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be installed directly in another group when component is referred to as " being installed in " another component
On part or there may also be components placed in the middle.When a component is considered as " being set to " another component, it be can be directly
It connects and is arranged on another component or may be simultaneously present component placed in the middle.When a component be considered as " being fixed on " another
Component, it, which can be, is directly anchored on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases
Any and all combinations of the listed item of pass.
Embodiment 1:
It please refers to Fig.1 to Fig.3, Fig. 1 is the structural schematic diagram of compression set 100 in the embodiment of the present invention 1, and Fig. 2 is Fig. 1 institute
Show that the decomposition diagram of compression set 100, Fig. 3 are the decomposition diagram at another visual angle of compression set 100 shown in Fig. 2.Compression dress
100 are set to compress Medical rack, in the volume compression of Medical rack to predetermined range, will enable Medical rack with compared with
Small volume is transported in the official jargon of human body or animal body, achievees the effect that minimally-invasive treatment.After Medical rack reaches deployment point
Through itself expansion or balloon expandable rear support in the lumen of human body or animal body.
It is appreciated that compression set 100 is not limited to can only to compress the intravascular stent applied to cardiovascular field, artificial
Heart valve blocks implantation material etc., in other examples, compression set 100 can also be applied to esophagus, enteron aisle etc. other
The Medical rack of position support, as long as the Medical rack with radial dimension variation can be filled using compression provided by the invention
100 are set to be compressed.
Compression set 100 is including support base 10, at least two circumferential support pieces 20 and is located at two circumferential support pieces 20
Between blade group 30, support chip 20 and blade group 30 be contained in support base 10, and blade group 30 includes multiple blades 31, often
The side of a blade 31 is slidably connected with a support chip 20, and the other side and another support chip 20 are rotatablely connected, multiple blades
31 surround the central through hole 32 to be formed to compress Medical rack, and the activity of multiple blades 31 can change the ruler of central through hole 32
It is very little.
Support base 10 is to accommodate support chip 20 and blade group 30, and support chip 20 is to support blade group 30 and with movable vane piece
30 actuations of group, blade group 30 is to compress Medical rack.Drive of the multiple blades 31 at supported on both sides 20 in blade group 30
Lower movement changes the size for surrounding the central through hole 32 to be formed, the Medical rack being placed in central through hole 32 is existed
The extruding pushing of 31 medial surface of blade, which is contractd, reduces the volume of itself, to complete compression of the compression set 100 to Medical rack
Process.
Support base 10 is surrounded jointly with frame 12 and is used for including pedestal 11 and the frame 12 connecting with pedestal 11, pedestal 11
The accommodating space 13 of support chip 20 and blade group 30 is accommodated, support chip 20 and blade group 30 are set in the accommodating space 13.
Pedestal 11 includes substrate 111 and the fixed frame 112 being set on substrate 111, and substrate 111 is solid for fixing and carrying
Determine frame 112, fixed frame 112 is to fixed support chip 20.
There is fixed frame 112 curved opening to offer correspondence on fixed frame 112 to match the circular profile of support chip 20
It is inserted into a limiting slot 113 in the lateral margin of multiple limiting slots 113 of support chip 20, each support chip 20, fixed frame 112 is logical
It crosses limiting slot 113 and limits the axial movement for being embedded support chip 20 therein.
In the present embodiment, limiting slot 113 is opened up along the central axial direction of vertical support piece 20, multiple 113 phases of limiting slot
It is mutually parallel and be spaced setting；The quantity of limiting slot 113 is five, to match five support chips 20 in the present embodiment.It can be with
Understand, in other examples, open up direction and the laying mode of limiting slot 113 can also be using apart from the above other
Form, as long as multiple support chips 20 can be respectively embedded into the limiting slot 113；The quantity of limiting slot 113 can also be two,
As long as three, four the perhaps quantity Matching of the quantity of five or more limiting slots 113 and support chip 20 or limiting slots 113
Quantity is greater than the quantity of support chip 20.
In the present embodiment, substrate 111 is rectangular plate, and substrate 111, which is set as plate, can more steadily carry compression
Device 100.It is appreciated that in other examples, substrate 111 may be arranged as other in addition to plate such as curved slab
Shape；Preferably, the shape of substrate 111 is matched with the shape of the external support plane of carrying compression set 100, to improve compression dress
It sets 100 and bears stability.
In the present embodiment, limiting slot 113 runs through substrate 111, and compression set 100 is after installing support chip 20, support
The bottom of piece 20 is all sunk to 113 in limiting slot, so that the height of entire compression set 100 be effectively reduced；Especially when medical branch
Frame needs are in the liquid environments such as ice water mixed liquor when being compressed, and the bottom of support chip 20 all sinks in limiting slot 113 can
The height for needing the ice water mixing liquid being arranged is effectively reduced, to reduce the demand to total amount of liquid such as ice water mixed liquors, subtracts
Few cost loss.
In the present embodiment, it is contemplated that Medical rack needs in part are completed compressed in the liquid environments such as ice water mixed liquor
Journey, corresponding on the substrate 111 of pedestal 11 to offer leakage fluid dram 114, limiting slot 113 and leakage fluid dram 114 are interconnected, namely cyclic annular
The bottom of limiting slot 113 forms leakage fluid dram 114 through substrate 111, and leakage fluid dram 114 is placed in accommodating space 13 to be discharged
Interior liquid prevents liquid from remaining in accommodating space 13, convenient to clean to compression set 100, improves compression set
100 property easy to use；Leakage fluid dram 114 in the present embodiment includes five intervals and square through hole arranged in parallel (is not marked
Number), it is placed in the liquid in accommodating space 13 and is discharged outside compression set 100 by five square through holes.
It is appreciated that in other examples, leakage fluid dram 114 can also be using other sides of opening up apart from the above
The quantity of formula, leakage fluid dram 114 can also be using the other quantity other than five, as long as leakage fluid dram 114 can be realized to liquid
The discharge of body；Certainly, when compression set 100 and when being not applied in liquid environment, leakage fluid dram 114 also be can be omitted.
Frame 12 is set on pedestal 11, is offered and is connected with accommodating space 13 and through 12 liang of frame on frame 12
It is interconnected and to just setting to put the central through hole 32 that is surrounded with blade group 30 of mouth 121 for the storing mouth 121 of a reverse side
It sets, storing mouth 121 passes through frame 12 with for Medical rack, consequently facilitating Medical rack enters in central through hole 32.It will put
Mouth 121, to just, can facilitate operator to protrude into Medical rack in central through hole 32, improve operation just with central through hole 32
Victory.
Preferably, the shape for putting mouth 121 also opens up as circle, to match the cylinder of central through hole 32 and Medical rack
Shape shape.It is appreciated that in other examples, storing mouth 121 can also use other shapes than circular, as long as
Putting mouth 121 and can be realized allows Medical rack to enter the function in central through hole 32.
The partial circumferential of frame 12 is set as arc, fixed operation portion 14 is provided in the arcuate flanks of frame 12 and can
Dynamic operation portion 15, fixed operation portion 14 are set on frame 12, and movable operation portion 15 is movably arranged on frame 12；Frame
Jagged (not labeled) is opened up in 12 arcuate flanks, movement of the notch to avoid movable operation portion 15, so that movable behaviour
Making portion 15 can slide along the arcuate flanks of frame 12.
In the present embodiment, fixed operation portion 14 is fixedly connected by way of being connected together with frame 12, movable operation portion
15 are movably arranged at frame 12 by way of being slidably connected, and movable operation portion 15 can be with the curved side of frame 12 at this time
Face is moving track, and the opposite arcuate flanks are slided.
It is appreciated that in other examples, fixed operation portion 14 and frame 12 can also be by being embedded connection, screw thread
Other connection type realizations such as connection are fixed to each other；Movable operation portion 15 can also pass through the others sides such as threaded screw rod cooperation
The movement of formula realization opposing frame 12.
Movable operation portion 15 directly operates the position of compression set 100 as operator, can be improved compression set 100
Operation convenience, it is flat and lead to unworkable support chip 20 to avoid the direct operational shape of operator.Movable operation
Portion 15, but also movable operation portion 15 has lesser frictional resistance when moving, is further mentioned by the way of being slidably connected
The high operating characteristics in movable operation portion 15.In addition, the side being in contact in frame 12 with movable operation portion 15 is set as arc,
So that the running track in movable operation portion 15 is adjusted to arc, operating handle is improved, the operating process of compression set 100 is more
It is smooth.
Referring to Figure 4 together, Fig. 4 is the decomposition diagram in support chip 20 and fixed operation portion 14 and movable operation portion 15,
Fixed operation portion 14 is connected with the support chip 20 of part, this part support chip 20 that name is connected with fixed operation portion 14 is
Fixed support chip 141；Movable operation portion 15 is connected with the support chip 20 of remaining part, and name is connected with movable operation portion 15
This part support chip be moveable support piece 151, the movement of 15 opposing frame 12 of movable operation portion is able to drive moveable support piece
151 rotate relative to fixed support chip 141, surround to be formed so that the blade 31 in blade group 30 changes under the driving of support chip 20
Central through hole 32 size.
The central axis of each support chip 20 substantially overlaps and is provided with one group of blade group 30 between every two support chip 20, even
The fixation support chip 141 for being connected to fixed operation portion 14 is spaced apart from each other with the moveable support piece 151 for being connected to movable operation portion 15 to be set
It sets namely every two fixes one moveable support piece 151 of sandwiched between support chip 141, pressed from both sides between every two moveable support piece 151
If a fixed support chip 141.
Please refer to fig. 5, Fig. 5 is the structural schematic diagram of support chip 20 shown in Fig. 1, support chip 20 is substantially annular in shape, branch
Blade 20 is equipped with the slide contact part 21 being slidably connected with blade 31 and the rotation connection with the rotation connection of another blade 31
Portion 22 namely support chip 20 are duplex support chip.Slide contact part 21 is being supported with for a blade 31 in blade group 30
It is slided on piece 20, the rotation relative to support chip 20 is realized with for another blade 31 in blade group 30 in rotating junction 22.
In the present embodiment, slide contact part 21 is sliding slot 211, and rotating junction 22 is axis hole 221, and sliding slot 211 runs through with axis hole 221
Two end faces of support chip 20；Since support chip 20 realizes the cunning with blade 31 respectively by the way of sliding slot 211, axis hole 221
Dynamic connection and rotation connection, so that the required solid material in the manufacturing processes such as casting, 3 D-printing of support chip 20 is less,
Cost relative reduction.
It is appreciated that in other examples, slide contact part 21 can also be real using other modes such as sliding rail connections
It is now slidably connected with blade 31, rotating junction 22 can also be realized using other modes such as live ball connections to be turned with blade 31
Dynamic connection.
In the present embodiment, sliding slot 211 is opened up along the radial direction of circumferential support piece 20 namely the extending direction of sliding slot 211 is branch
The radial direction of blade 20, the glide direction of each blade 31 is formed by sliding trace with sliding slot 211 and is consistent at this time, sliding slot
Contact force between 211 two sides and blade 31 along its length is relatively small, and sliding of the blade 31 in sliding slot 211 rubs
It is smaller to wipe power, the sliding of blade 31 is more smooth.
Certainly, sliding slot 211 can also open up mode using other, as long as the sliding that sliding slot 211 is capable of guide vane 31 is
It can.The quantity due to blade 31 is appreciated that be multiple, the quantity of sliding slot 211 and axis hole 221 is also multiple.
In the present embodiment, multiple sliding slots 211 are spaced one by one around the center of circumferential support piece 20 with multiple axis holes 221 and set
It sets.Further, the center of each sliding slot 211 is respectively positioned on using 20 center of support chip as on the circumference in the center of circle；And/or it is each
The center of a axis hole 221 is respectively positioned on using 20 center of support chip as on the circumference in the center of circle.At this point, each sliding slot 211 is propped up in ring-type
Blade 20 radially have it is identical open up position, each axis hole 221 circumferential support piece 20 radially also have it is identical
Open up position, sliding slot 211 and axis hole 221 have symmetry.
Need to illustrate when, have when the quantity of sliding slot 211 and axis hole 221 is even number, between multiple sliding slots 211 opposite
Also there is between multiple axis holes 221 axial symmetry relationship in 20 center of support chip the axial symmetry relative to 20 center of support chip to close
System, axial symmetry relationship here refer to that multiple sliding slots 211 pass through pair at 20 center of support chip with multiple axis holes 221 around one
Claim its both sides of axis full symmetric；Have when the quantity of sliding slot 211 and axis hole 221 is odd number, between multiple sliding slots 211 relative to
The central symmetry relationship at 20 center of support chip also has the central symmetry relative to 20 center of support chip between multiple axis holes 221
Relationship, central symmetry relationship here refer to that multiple sliding slots 211 are rotated with multiple axis holes 221 around the center of support chip 20
It can be overlapped with original shape after 180 °.
Symmetry Relations possessed by sliding slot 211 and axis hole 221, so that the structural symmetry with higher of support chip 20,
This design symmetry reduces the alignment set-up time of support chip 20 and blade 31, the reality that support chip 20 can be relatively easy
Now with the fastening of blade 31, the assembling process between support chip 20 and blade 31 is opposite convenient, and use is more convenient.
It is appreciated that the present invention is not limited to multiple sliding slots 211 and multiple axis holes 221 can only use above-mentioned arrangement side
Formula, in other examples, multiple sliding slots 211 and multiple axis holes 221 can also be opened except other modes such as symmetrical structure
On support chip 20.
Support chip 20 includes shank 23, and shank 23 is convexly equipped in the periphery of support chip 20, and support chip 20 is connected by shank 23
Fixed operation portion 14 or movable operation portion 15.Partial support chip 20, namely the fixation support chip 141 named above pass through certainly
The shank 23 of body projection is embedded in fixed operation portion 14, to realize and being fixedly connected between fixed operation portion 14；It is remaining
Partial support plate 20, namely the moveable support piece 151 named above are embedded at movable behaviour by the shank 23 of itself projection
Make in portion 15, to realize and being fixedly connected between movable operation portion 15.
Preferably, the center for the arcuate flanks being arranged on frame 12 is overlapped with the center of support chip 20, so that shank
23 can keep the stabilization between movable operation portion 15 during rotation, avoid shank 23 with respect to movable operation portion 15 away from
From changing, shank 23 is caused constantly to extend or retreat along the radial of support chip 20 in movable operation portion 15, to improve pressure
The Stability and dependability of compression apparatus 100.
Movable operation portion 15 drives the movement of 20 shank 23 of support chip along the sliding of 12 arcuate flanks of frame, and shank 23 drives
Moveable support piece 151 is rotated relative to fixed support chip 141, and the relative rotation between the support chip 20 that two are disposed adjacent, and is made
The blade group 30 that must be installed between two support chips 20 follows movement, to change the central through hole that multiple blades 31 are surrounded
32 size.
Referring to Figure 6 together and Fig. 8, Fig. 6 are the structural schematic diagram after 100 clipped structure of compression set shown in Fig. 1,
Fig. 7 is the structural schematic diagram of blade 31 in the embodiment of the present invention 1, and Fig. 8 is the knot that two blades 31 are connected to a support chip 20
Structure schematic diagram.Each blade 31 is arc-shaped, and the blade 31 of multiple arcs is along the circumferential direction sequentially stacked, and is mutually staggered
Preset angle.
In the present embodiment, each group of blade group 30 includes six blades 31.It is appreciated that in other examples, often
One group of blade group 30 can also be using the blade 31 of other suitable numbers in addition to six.
One end of blade 31 is rotationally connected with a support chip 20, and the other end is slidably connected to another support chip 20, leaf
Piece 31 is obliquely installed with respect to the central axes of central through hole 32.Central axes by blade 31 with respect to central through hole 32 are obliquely installed, energy
Enough it is convenient for the installation and operation of blade 31, reduces the sliding friction between blade 31 and support chip 20, being also correspondingly improved makes
Use the service life.
Preferably, blade 31 is set as 0 ° to 5 ° relative to the inclined angular range in 32 central axes of central through hole, at this time leaf
Piece 31 does not increase considerably the thickness after multiple blades 31 are stacked under conditions of guaranteeing that sliding friction is relatively low.
Compressing the side of Medical rack on blade 31, namely to be set as arc recessed in the face being in contact with Medical rack
Face, the arc-shaped concave on multiple blades 31 cooperate and surround the central through hole 32 to compress Medical rack.Compression is connect
Contacting surface is set as arc-shaped concave, can preferably match the curved appearance of Medical rack, improves central through hole 32 and Medical rack
Effective contact area.
Preferably, the face being in contact on blade 31 with Medical rack is set as semicircle cambered surface, and blade 31 can be compared at this time
Good matching cylinder Medical rack improves the compression effectiveness to cylindrical Medical rack.
It is appreciated that the arc-shaped concave being arranged on blade 31 can also use the other shapes in addition to semicircle cambered surface,
It the face that blade 31 is in contact with Medical rack can also be using other shapes such as convex surface, plane, as long as multiple blades 31 can
Surround the channel of compression Medical rack.
Also referring to Fig. 9, Fig. 9 is the structural schematic diagram that a blade 31 is connected to a support chip 20, it is preferred that leaf
Piece 31 is not in the mounted state (before i.e. blade works), the interior camber line of blade 31 and the inner arc line overlap of support chip 20, it may be assumed that with branch
The center of blade 20 is the center of circle, the interior camber line of blade 31 and the interior camber line radius having the same of support chip 20.
It is motion profile figure of the blade 31 on support chip 20 also referring to Figure 10, Figure 10.Preferably, when one group of blade
30 tool of group is there are six when blade 31, and blade 31 is designed as the arcuate structure with 180 °, and six blades 31 have been formed by this time
It is maximum to imitate opening area.It should be noted that here 180 °, refer to that (blade does not work blade 31 in the mounted state
Before), using the center of support chip 20 as the center of circle, central angle corresponding to camber line two-end-point in blade 31, namely at this time in blade 31
Central angle corresponding to camber line is 180 °.
When the central angle corresponding to the camber line in blade 31 is less than 180 °, the sliding block 313 on blade 31 is in sliding slot 211
Athletic performance are as follows: first towards the center movement of support chip 20, be re-directed towards the center far from support chip 20 and run, at this time six blades
The effective vent area surrounded is relatively small.And since sliding block 313 has the change of the direction of motion in one stroke, this causes
The kinematic accuracy of sliding block 313 also relative reduction.
Therefore, when the best degree of central angle corresponding to camber line is 180 ° in blade 31, the effective vent area of blade 31
It is maximum.
Fig. 8 illustrates structure when two opposite blades 31 are located at 20 two sides of support chip, at this time blade 31 with should
Support chip 20 is rotatablely connected, another blade 31 is slidably connected with the support chip 20.Two leaves being connected with the support chip 20
Piece 31 is mutually mirror, and the two blades 31 in actuation with the opposite direction of motion.
Each blade 31 include first end 311 and the second end 312 opposite with first end 311, first end 311 with extremely
A rotation connection in few two support chips 20, second end 312 are slidably connected with another at least two support chips 20.
In the present embodiment, in order to improve the transmission stability and fluency between blade 31 and support chip 20, each leaf
The sliding block 313 being slidably matched with the slide contact part 21 of support chip 20 is provided in the second end 312 of piece 31, at this time sliding block 313
It is embedded in the sliding slot 211 of the support chip 20；Be provided on the another side of the blade 31 namely first end 311 and another
The shaft 314 that the rotating junction 22 of support chip 20 is rotatably assorted, shaft 314 is arranged in the axis hole 221 of the support chip 20 at this time.
Being slidably connected between blade 31 and support chip 20 is realized by the cooperation between sliding block 313 and sliding slot 211, passes through shaft 314
The rotation connection between blade 31 and another support chip 20 is realized in cooperation between axis hole 221, so that blade 31 and support chip
There is relatively high fitment stability and fluency between 20, be correspondingly improved the reliability of compression set 100.
It is appreciated that blade 31 is not limited to only realize respectively by the way of above-mentioned sliding block 313 and axis hole 221
It with support chip 20 being slidably connected and being rotatablely connected, in other examples, blade 31 can also be by apart from the above
Other structures, which are realized, to be slidably connected and being rotatablely connected with support chip 20, if the structure can be slidably connected on support chip 20
Structure used by portion 21 and rotating junction 22 is with suitable.
Referring again to Figure 11 and Figure 15, Figure 11 is five support chips 20 and work when four groups of compression Medical racks of blade groups 30
Make state diagram, Figure 12 is working state figure when one group of blade group 30 compresses Medical rack, and Figure 13 is that compression set 100 is in the
Structural schematic diagram when one working condition, Figure 14 are structural schematic diagram when compression set 100 is in the second working condition, Figure 15
Structural schematic diagram when third working condition is in for compression set 100.
Movable operation portion 15 drives the movement of the shank 23 of moveable support piece 151 along the sliding of 12 arcuate flanks of frame, this
When moveable support piece 151 rotated relative to fixed support chip 141, and the relative rotation between the support chip 20 that two are disposed adjacent,
So that the blade group 30 being installed between two support chips 20 follows movement；The first of shaft 314 is provided on each blade 31
The second end 312 that end 311 is provided around sliding block 313 rotates, so that multiple blades 31 surround the ruler for the central through hole 32 to be formed
The very little rotation with blade 31 changes；When the size of central through hole 32 becomes smaller, Medical rack becomes in the compressing lower volume of blade 31
It is small, thus compressive state when reaching conveying.
The structure that five support chips in the present embodiment all use duplex support chip is illustrated referring again to Fig. 4, Fig. 4,
In the present embodiment, the quantity of support chip 20 is five, including three fixed support chips 141 and two moveable support pieces 151, this
When five support chips 20 be duplex support chip.
It is appreciated that the quantity of support chip 20 is not limited to five in above-described embodiment.In other examples, it props up
The quantity of blade 20 can also be two, three, four and five or more；When the quantity of support chip 20 is two, blade group
30 quantity is one；When the quantity of support chip 20 is three, the quantity of blade group 30 is two；When the quantity of support chip 20
When being four, the quantity of blade group 30 is three, and so on, it is not repeated to enumerate herein.
Embodiment 2:
Figure 16 is please referred to, Figure 16 is five support chips 20 in the embodiment of the present invention 2 not all using the knot of duplex support chip
Structure schematic diagram, when the quantity of support chip 20 is five, one in outermost two support chips 20, it is only necessary to what is closed on
Blade group 30 provides rotating fulcrum namely the support chip 20 only needs that rotating junction 22 is arranged；Outermost two support chips
Another in 20, it is only necessary to provide sliding rail to the blade group 30 closed on namely the support chip 20 only needs that sliding is arranged
Interconnecting piece 21.At this point, outermost two support chips 20 are simply connected support chip, remaining three support chip 20 is duplex support
Piece.
Embodiment 3:
Figure 17 and Figure 18 is please referred to, Figure 17 is the structural schematic diagram of three support chips 20 in the embodiment of the present invention 3, Tu18Wei
The decomposition diagram of three support chips 20 shown in Figure 17, the quantity of blade group 30 is two at this time, and three support chips 20 are double
Join support chip.
Certainly, outermost two support chips 20 in the present embodiment can also use simply connected support chip, i.e., one of them
Support chip 20 provides rotating fulcrum to the blade group 30 closed on namely the support chip 20 is provided only with rotating junction 22；It is another
A support chip 20 provides sliding rail to the blade group 30 closed on namely the support chip 20 only needs that slide contact part 21 is arranged.
Embodiment 4:
Figure 19 to Figure 20 is please referred to, Figure 19 is the structural schematic diagram of two support chips 20 in the embodiment of the present invention 4, Tu20Wei
The decomposition diagram of two support chips 20 shown in Figure 19, the quantity of blade group 30 is one at this time, in two support chips 20, one
For duplex support chip, another is simply connected support chip.
It is appreciated that support chip 20 employed in compression set 100 can be disposed as duplex support chip, to improve branch
The interchangeability of blade 20 reduces die sinking and installation cost, improves the structure versatility of compression set 100.
In other examples, outermost when the quantity of support chip 20 is three or three or more odd numbers
Two support chips 20 or simply connected support chip, at this time one in outermost two support chips 20, it is only necessary to closing on
Blade group 30 rotating fulcrum namely the support chip 20 are provided only need that rotating junction 22 is arranged；Outermost two supports
Another in piece 20, it is only necessary to provide sliding rail to the blade group 30 closed on namely the support chip 20 only needs that cunning is arranged
Rotation connection 21；And remaining support chip 20 between two support chips 20 on the outermost side is duplex support chip；
When the quantity of support chip 20 is four or more than four even numbers, outermost two support chips 20 can also be with
For simply connected support chip, outermost two support chips 20 need to provide rotating fulcrum namely the branch to the blade group 30 closed on
Blade 20 only needs that rotating junction is arranged；Or, outermost two support chips 20 need to provide the blade group 30 closed on
Sliding rail namely the support chip 20 only need that slide contact part is arranged；And between two support chips 20 on the outermost side
Remaining support chip 20 is duplex support chip.
Embodiment 5:
Referring to Figure 2 together 1 to Figure 23, Figure 21 are the structural schematic diagram of blade 31 in the embodiment of the present invention 5, and Figure 22 is this
The structural schematic diagram of support chip 20 in inventive embodiments 5, Figure 23 are that blade 31 is installed on support chip 20 in the embodiment of the present invention 5
Structural schematic diagram.For the reliability and stability of further compression set 100, at least one is also convexly equipped in shaft 314
First stop section 315, the first stop section 315 limiting relative position of the shaft 314 in axis hole 221, avoid shaft 314 from
It is detached from support chip 20.
In the present embodiment, the first stop section 315 is convexly equipped in the side of shaft 314, and the quantity of the first stop section 315 is two
A, two the first stop sections 315 are symmetrical about the central axis of shaft 314.
It is appreciated that the setting due to the first stop section 315 in shaft 314, the axis hole 221 being arranged with 314 phase of shaft
Upper correspondence offers escape groove 222, and escape groove 222 is provided with the side of axis hole 221, and escape groove 222 is connected with axis hole 221,
First stop section 315 of the escape groove 222 to avoid 314 projection of shaft, enables shaft 314 to be successfully embedded in axis hole 221
It is interior.
After shaft 314 passes through escape groove 222, two the first stop sections 315 support the side of support chip 20, to limit
The relative position on support chip 20 of shaft 314, improves the anticreep performance and structural stability of shaft 314.
It is appreciated that in other examples, the first stop section 315 can also be convexly equipped in shaft 314 top or
Other positions；Two the first stop sections 315 can also be convexly equipped in shaft 314 using other arrangement modes, the first stop section
315 quantity can also be more than one or two.
Embodiment 6:
4 and Figure 25 referring to Figure 2 together, Figure 24 are the structural schematic diagram of blade 31 in inventive embodiments 6, and Figure 25 is this hair
The structural schematic diagram of support chip 20 in bright embodiment 6.Sliding block 313 is set in the second end 312 of blade 31, on sliding block 313
It is provided with the second stop section 316 being detached from out of sliding slot 211 to anti-limited slip block 313.
In the present embodiment, the second stop section 316 is set as collar flange, and the second stop section 316 supports after passing through sliding slot 211
The side of support chip 20 avoids sliding block 313 from taking off out of sliding slot 211 to limit axial displacement of the sliding block 313 in sliding slot 211
From.Second stop section 316 is set as cyclic annular, is capable of increasing the area that the second stop section 316 supports support chip 20, at this time second gear
Stop 316 has preferable structural strength, and stability improves.
Due to setting of second stop section 316 on sliding block 313, corresponding matching is in the sliding slot of sliding block 313 on support chip 20
Blend stop 212 is convexly equipped on 211, blend stop 212 cooperates with the second stop section 316 is detached from corresponding support chip 20 to limit sliding block 313.
Due to setting of the blend stop 212 on sliding slot 211, so that the cavity volume of not set 212 one end of blend stop of sliding slot 211 is relatively large,
Cavity volume equipped with 212 part of blend stop is relatively small, and the second stop section 316 can pass through the biggish end of volume of sliding slot 211
Portion's cavity wears sliding slot 211, and the second stop section 316 supports the surface of support chip 20 and blend stop 212 again after sliding slot 211,
To realize the anti-off effect to sliding block 313.
It is appreciated that in other examples, the second stop section 316 can also using semicircular flanges, convex block or
Other structures realize the anticreep to sliding block 313.
It is appreciated that when the length of the compressed Medical rack of needs is relatively long, it can be in compression set 100 again
It is stacked multiple support chips 20 and multiple groups blade group 30.Since support chip 20 is duplex support chip, support chip 20 is provided not only
The sliding rail of one group of blade group 30 also provides the rotating fulcrum of another group of blade group 30 simultaneously, this makes offer of the present invention
Compression set 100 do not need two support chips 20 of setting to provide sliding rail and rotating fulcrum respectively, needed for blade group 30
The quantity for the support chip 20 to be carried is reduced, and the direct benefit of this bring is: first is that the quantity of support chip 20 is reduced, can reduce life
Produce cost；Two are comparable to only need that a support chip 20 is arranged between two groups of blade groups 30, i.e. thickness is reduced to half, this
So that compression set 100 when compressing Medical rack, improves the utilization rate that blade 31 compresses Medical rack, the pressure of Medical rack
Contracting more uniformly, can be avoided Medical rack Local Contraction problem of non-uniform.
In addition, having support chip 20 is duplex support chip, the structure of each support chip 20 is identical, this makes support chip 20 only
Process can be realized by a mold, need two molds to support to produce two models respectively with conventional compression device
The process of piece is compared, and the quantity demand of the mold high to cost is reduced, and also just reduces support chip 20 and compression dress
Set 100 manufacturing cost.
Medical rack compression set 100 provided by the invention passes through the setting simultaneously on support chip 20 and the sliding of blade 31 company
The slide contact part 21 connect and the rotating junction 22 being rotatablely connected with blade 31, set duplex support chip for support chip 20,
The quantity for reducing support chip 20 reduces the volume of Medical rack compression set 100, also reduces Medical rack compression set
100 manufacturing cost, is with a wide range of applications.
Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention, and
It is not used as limitation of the invention, as long as in spirit of the invention, it is to the above embodiments appropriate
Change and variation is all intended to fall within the scope of the claimed invention.
Claims (28)
1. a kind of expansible Medical rack compression set, comprising: at least two circumferential support pieces and be located at the support chip it
Between blade group, the blade group includes multiple blades, and the blade side is slidably connected with a support chip, the other side and another
One support chip rotation connection, the multiple blade surround to form central through hole, and the activity of the blade can change in described
The size of heart through-hole, to compress Medical rack, it is characterised in that: at least one in the support chip is both to be provided with and the leaf
The slide contact part that piece is slidably connected is provided with the duplex support chip with the rotating junction of blade rotation connection again.
2. Medical rack compression set as described in claim 1, it is characterised in that: the rotation connection on the duplex support chip
Portion is axis hole, and the slide contact part is sliding slot.
3. Medical rack compression set as claimed in claim 2, it is characterised in that: the length of each slide contact part
Direction is the radial direction of the corresponding support chip.
4. Medical rack compression set as described in any one of claims 1 to 3, it is characterised in that: on the duplex support chip
Rotating junction and the slide contact part be spaced setting one by one around the corresponding support chip center.
5. Medical rack compression set as claimed in claim 4, it is characterised in that: the center of the rotating junction be located at
The support chip center is on the circumference in the center of circle；And/or the center of the slide contact part is located at and with the support chip center is
On the circumference in the center of circle.
6. Medical rack compression set as described in claim 1, it is characterised in that: further include support base, the support chip with
And the blade group is contained in the support base.
7. Medical rack compression set as claimed in claim 6, it is characterised in that: each described support chip includes shank,
The shank is convexly equipped in the periphery of the corresponding support chip.
8. Medical rack compression set as claimed in claim 7, it is characterised in that: further include fixed operation portion and movable behaviour
Make portion, the fixed operation portion is connect with one at least two support chips, the movable operation portion and at least two
Another connection in the support chip, the fixed operation portion opposite can fix the corresponding support with the support base
The position of piece, the movable operation portion is able to drive the corresponding support chip and rotates relative to support chip described in another, to change
Become the size of the central through hole.
9. Medical rack compression set as claimed in claim 8, it is characterised in that: the movable operation portion and the support base
It is slidably connected and/or the fixed operation portion is connected together with the support base.
10. Medical rack compression set as claimed in claim 8, it is characterised in that: the partial circumferential of the support base is arc
Shape, the movable operation portion connect with the support base and can be along the arc slidings of the support base.
11. Medical rack compression set as claimed in claim 6, which is characterized in that the support base include pedestal and with
The frame of the pedestal connection, the pedestal and the frame are surrounded jointly for accommodating the support chip and the blade group
Accommodating space, the support chip and the blade group are set in the accommodating space.
12. Medical rack compression set as claimed in claim 11, it is characterised in that: the pedestal, which is equipped with, corresponds to the branch
The lateral margin of the limiting slot of blade, each support chip is inserted into the limiting slot, and the limiting slot limitation is corresponding described
The axial movement of support chip.
13. the Medical rack compression set as described in claim 11 or 12, it is characterised in that: the pedestal is equipped with leakage fluid dram,
The leakage fluid dram is used for the liquid being discharged in the accommodating space.
14. the Medical rack compression set as described in claim 11 or 12, it is characterised in that: the frame offer with it is described
Accommodating space connection and the storing mouth for running through two reverse side of frame, the central through hole and the storing mouth are to just setting
It sets.
15. Medical rack compression set as described in claim 1, it is characterised in that: each described blade is arc-shaped, multiple
The blade of arc is along the circumferential direction sequentially stacked, and mutually staggers predetermined arc.
16. Medical rack compression set as described in claim 1, it is characterised in that: each described blade is relative to described
The central axes of central through hole are obliquely installed.
17. Medical rack compression set as claimed in claim 16, it is characterised in that: each described blade is relative to center
The inclined angular range in the central axes of through-hole is 0-5 degree.
18. Medical rack compression set as described in claim 1, it is characterised in that: described to be mounted on duplex support chip two sides
Blade be mutually mirror.
19. Medical rack compression set as described in claim 1, it is characterised in that: described to be mounted on duplex support chip two sides
The blade direction of motion it is opposite.
20. Medical rack compression set as described in claim 1, it is characterised in that: the blade side is equipped with can be with institute
The shaft that support chip is rotatably assorted is stated, another side is equipped with the sliding block that can be slidably matched with the support chip.
21. Medical rack compression set as claimed in claim 20, it is characterised in that: the side of the shaft or top projection
There is at least one first stop section, first stop section cooperates with the corresponding support chip or duplex support chip, limits institute
It states shaft and is detached from the corresponding support chip.
22. Medical rack compression set as claimed in claim 21, it is characterised in that: first stop section is located at shaft
Side, quantity are two, and two first stop sections are symmetrically convexly equipped in the shaft about the central axis of the shaft
Side.
23. Medical rack compression set as claimed in claim 22, it is characterised in that: the rotating junction is axis hole, institute
The inner wall for stating axis hole offers the escape groove for avoiding first stop section.
24. Medical rack compression set as claimed in claim 20, it is characterised in that: the side of the sliding block or top projection
There is the second stop section, second stop section and the slide contact part cooperate, and limit the sliding block and are detached from the corresponding branch
Blade.
25. Medical rack compression set as claimed in claim 24, it is characterised in that: second stop section is cyclic annular convex
Edge.
26. Medical rack compression set as claimed in claim 24, it is characterised in that: the slide contact part is sliding slot, institute
It states sliding slot inner wall and is convexly equipped with blend stop, the blend stop branch corresponding with second stop section cooperation limitation sliding block disengaging
Blade.
27. Medical rack compression set as described in claim 1, it is characterised in that: the blade is in contact with Medical rack
Face be arc-shaped concave, the arc-shaped concave surrounds the central through hole.
28. Medical rack compression set as claimed in claim 27, it is characterised in that: the blade is in contact with Medical rack
Face be semicircle cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866491.6A CN109106484A (en) | 2018-08-01 | 2018-08-01 | Expansible Medical rack compression set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866491.6A CN109106484A (en) | 2018-08-01 | 2018-08-01 | Expansible Medical rack compression set |
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| CN109106484A true CN109106484A (en) | 2019-01-01 |
Family
ID=64863906
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| CN201810866491.6A Pending CN109106484A (en) | 2018-08-01 | 2018-08-01 | Expansible Medical rack compression set |
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| CN (1) | CN109106484A (en) |
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| CN111214317A (en) * | 2020-02-24 | 2020-06-02 | 山东省立医院 | Aortic large support pressing, retracting and installing device and system |
| WO2024015433A1 (en) * | 2022-07-15 | 2024-01-18 | Edwards Lifesciences Corporation | Prosthetic valve preparation assemblies and associated methods |
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Address after: 310052 Room 311, 3/F, Building 88, Jiangling Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Qiming Medical Devices Co., Ltd. Address before: 310052 Room 311, 3/F, Building 88, Jiangling Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant before: Hangzhou Qiming Medical Device Co., Ltd. |
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