CN116019599A - Pressing and holding device and method for valve stent - Google Patents
Pressing and holding device and method for valve stent Download PDFInfo
- Publication number
- CN116019599A CN116019599A CN202310108143.3A CN202310108143A CN116019599A CN 116019599 A CN116019599 A CN 116019599A CN 202310108143 A CN202310108143 A CN 202310108143A CN 116019599 A CN116019599 A CN 116019599A
- Authority
- CN
- China
- Prior art keywords
- pressure plate
- clamping module
- pressing
- housing
- platen
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 230000000670 limiting effect Effects 0.000 claims description 37
- 238000002788 crimping Methods 0.000 claims description 21
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 210000003709 heart valve Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 208000027205 Congenital disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 208000004124 rheumatic heart disease Diseases 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The invention provides a pressing and holding device and a pressing and holding method for a valve bracket, wherein the pressing and holding device comprises a transmission mechanism and a clamping module, the clamping module comprises at least three pressing blocks, and the at least three pressing blocks are uniformly distributed in a central symmetry mode; the transmission mechanism comprises a first pressure plate, a second pressure plate, a driving assembly and a screw rod, wherein the first pressure plate and the second pressure plate are respectively positioned at two sides of the clamping module and are movably connected with the pressing block, the screw rod is connected with the first pressure plate and the second pressure plate, the driving assembly is used for driving the screw rod to reciprocate and driving the first pressure plate and the second pressure plate to rotate in the same direction by taking a central symmetry axis of the clamping module as a rotation center, so that the pressing block contracts or expands along a direction which is radially close to or far away from the center of the clamping module. The invention effectively improves the press-holding length and can realize uniform radial contraction of the bracket product.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and relates to a pressing and holding device and method for a valve support.
Background
Since the advent of prosthetic heart valves, they have been widely used for the treatment of structural heart disease. Rheumatic heart disease, partial congenital disease, and valve calcification in the elderly are the primary causes of valve damage in patients. Damage to the valve is irreversible and its incidence increases progressively with age, so valve replacement or repair is of great importance.
The treatment of valve disease is mainly performed by surgical methods to replace a heart valve prosthesis with a diseased valve of a patient, however, the methods are not suitable for patients with partial age, complicated diseases, etc. Considering the problem of surgical risk, valve replacement is usually carried out by adopting a minimally invasive transvascular intervention mode, and chest opening is not needed, so that the method has the advantages of small wound, quick recovery and the like.
In the minimally invasive transvascular intervention process, the prosthetic valve is placed at the end of the flexible catheter in a crimped state after being pressed and held by the stent pressing and holding device, and is pushed by the blood vessel of a patient until the prosthetic valve reaches a position where implantation is needed, and finally the prosthetic valve is accurately released by utilizing the cooperative fit of the assembly tube inside the flexible tube.
The movement track of the unit pressing sheet in the traditional stent pressing and holding device is in a spiral line state, and shearing force is easily generated on the surface of the stent in the movement process, so that the skirt edge, coating or the mechanical structure of the mesh of the stent on the surface of the valve stent are damaged. In addition, the valve support has certain height, the effective pressing length of the handheld pressing device is limited, the number of unit pressing sheets is small, the phenomenon of uneven pressing is easy to cause, and the valve support is extruded, so that the support and the valve structure are damaged.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a pressing and holding device and a pressing and holding method for a valve stent, which are simple to operate, effectively improve the pressing and holding length, have wide adaptability and can realize uniform radial contraction of stent products.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a pressing device for a valve stent, which comprises a transmission mechanism and a clamping module, wherein the clamping module comprises at least three pressing blocks which are uniformly distributed in a central symmetry manner;
the transmission mechanism comprises a first pressure plate, a second pressure plate, a driving assembly and a screw rod, wherein the first pressure plate and the second pressure plate are respectively positioned at two sides of the clamping module and are movably connected with the pressing block, the screw rod is respectively connected with the first pressure plate and the second pressure plate, the driving assembly is used for driving the screw rod to reciprocate and drives the first pressure plate and the second pressure plate to rotate in the same direction by taking a central symmetry axis of the clamping module as a rotation center, so that the pressing block contracts or expands along a direction which is radially close to or far away from the center of the clamping module.
According to the pressing and holding device for the valve support, the driving assembly is adopted to drive the screw rod to do reciprocating motion along the direction perpendicular to the central symmetry axis of the pressing block, so that the first pressing plate and the second pressing plate are driven to rotate in the same direction at the same time, the clamping module between the first pressing plate and the second pressing plate is contracted or expanded, and even pressing and holding of the support is achieved.
It should be noted that, the central symmetry axis of the clamping module in the invention is the central symmetry axis of at least three pressing blocks.
As a preferred technical scheme of the invention, the press-holding device for the valve support further comprises a first shell, a second shell and a base, wherein the base is used for respectively fixing the first shell and the second shell, the first shell is sleeved on the periphery of the first pressure plate, and the second shell is sleeved on the periphery of the second pressure plate.
At least three first sliding grooves are formed in the surface of the first shell along the circumferential direction, at least three second sliding grooves are formed in the surface of the second shell along the circumferential direction, and two ends of the pressing block are respectively connected with the first sliding grooves and the second sliding grooves in a sliding mode.
In the invention, the first shell is sleeved on one side of the first pressure plate away from the clamping module, and the second shell is sleeved on one side of the second pressure plate away from the clamping module.
As a preferable technical scheme of the invention, at least one connecting seat is arranged in the base, a first groove and a second groove are formed in the connecting seat, at least one first support column is arranged at the bottom of the first shell, at least one second support column is arranged at the bottom of the second shell, after the first shell and the second shell are buckled, the first support column stretches into the first groove, and the second support column stretches into the second groove to be fixed.
As a preferable technical scheme of the invention, the first pressure plate and the second pressure plate are fixed through at least two connecting rods.
The two ends of the connecting rod are respectively connected with the first pressure plate and the second pressure plate through bolts.
The surface of first pressure disk with the fixed orifices has been seted up to the surface of second pressure disk, the both ends of connecting portion stretch into respectively in the fixed orifices connect.
As a preferable technical scheme of the invention, the surfaces of the first pressing plate and the second pressing plate are respectively provided with a first through hole, the surfaces of the first shell and the second shell are respectively provided with a second through hole, and the first through holes, the second through holes and the clamping module are concentrically arranged.
As a preferable technical scheme of the invention, the driving assembly comprises a knob, one end of the screw rod is screwed into the knob, and the other end of the screw rod is respectively connected with the first pressure plate and the second pressure plate.
In the use process, the knob is rotated, the screw rod is gradually screwed into the knob, and the first pressure plate and the second pressure plate are driven to rotate anticlockwise or clockwise by taking the central symmetry axis of the clamping module as the rotation center, so that a plurality of pressing blocks in the clamping module are gathered together to realize shrinkage; the knob is rotated, the screw rod is gradually unscrewed out of the knob, and the first pressure plate and the second pressure plate are driven to rotate clockwise or anticlockwise by taking the central symmetry axis of the clamping module as the rotation center, so that a plurality of pressing blocks in the clamping module are mutually dispersed, and expansion is realized.
The screw comprises a driving part and a connecting part, wherein the driving part and the connecting part form an inverted T shape, the driving part is screwed into the knob, and two ends of the connecting part are respectively and detachably connected with the first pressure plate and the second pressure plate.
The driving part and the connecting part form an inverted T shape, wherein the connecting part is transversely arranged, two ends of the connecting part are respectively connected with the first pressure plate and the second pressure plate, and the driving part is longitudinally arranged.
The outer wall of the driving part is provided with threads which are meshed with the inner wall of the knob, so that the screw is screwed in and screwed out, and two ends of the connecting part are respectively connected with the first pressure plate and the second pressure plate through screws, so that the screw can be screwed in and screwed out to drive the first pressure plate and the second pressure plate to simultaneously rotate in the same direction.
As a preferable technical scheme of the invention, the driving assembly further comprises a fixing rod, the fixing rod is perpendicular to the central symmetry axis of the clamping module, the screw rod is sleeved on part of the peripheral wall of the fixing rod and reciprocates along the outer wall of the fixing rod, and one end of the fixing rod extending out of the screw rod is fixedly connected with the first shell.
In the invention, the driving part of the screw is hollow, and the fixing rod penetrates through the driving part and is fixedly connected with the first shell. In the pressing and holding process, the fixed rod is kept static, and the screw rod reciprocates along the outer wall of the fixed rod under the driving of the knob. The connecting mode of the fixing rod and the first shell is not particularly required or limited, and the fixing rod is fixedly connected with the first shell by adopting a long screw through a positioning hole formed in one end of the fixing rod extending out of the screw rod, and the fixing rod is perpendicular to the central symmetry axis of the clamping module.
As a preferable technical scheme of the invention, the pressing block is provided with a first boss and a second boss, the first boss penetrates through the first pressing plate and is connected with the first shell in a sliding mode, and the second boss penetrates through the second pressing plate and is connected with the second shell in a sliding mode.
In order to help those skilled in the art to better understand the overall technical scheme and working process of the present invention, the present invention exemplarily provides the following specific structures related to the compacts: the pressing block comprises a first end part and a second end part, wherein the first boss and the second boss are respectively arranged at two ends of the first end part, the second end part is a guide part with a gradually reduced thickness, the guide parts of a plurality of pressing blocks of the clamping module are sequentially arranged along the circumferential direction, and all the guide parts can be tightly attached to each other in the pressing and holding process to realize contraction. The structures of the first boss and the second boss are not particularly required or limited, and a cylindrical boss may be used as an example.
At least three first limiting holes are formed in the surface of the first pressure plate along the circumferential direction, at least three second limiting holes are formed in the surface of the second pressure plate along the circumferential direction, the first boss penetrates through the first limiting holes and is in sliding connection with the first sliding groove, and the second boss penetrates through the second limiting holes and is in sliding connection with the second sliding groove.
The at least three first limiting holes are distributed in a central symmetry mode, and the at least three second limiting holes are distributed in a central symmetry mode.
In the invention, the first sliding chute and the second sliding chute are arc-shaped grooves.
In the invention, the first limiting holes on the surface of the first pressure plate are in one-to-one correspondence with the first bosses of the pressure block, and the second limiting holes on the surface of the second pressure plate are in one-to-one correspondence with the second bosses of the pressure block. The first boss passes through the first limiting hole and extends into the first chute, the second boss passes through the second limiting hole and extends into the second chute, when the first pressure plate and the second pressure plate rotate in the same direction, the first boss is driven to move in the first chute, and meanwhile, the second boss moves in the second chute, so that the pressing block gathers or disperses along the radial direction of the center of the clamping module. The shapes of the first limiting hole and the second limiting hole are not particularly required or limited, and rectangular long holes can be used for example.
In a second aspect, the present invention provides a method for crimping a valve stent, the method for crimping a valve stent using the method for crimping a valve stent of the first aspect, the method for crimping comprising:
the driving screw reciprocates, and then drives the first pressure plate and the second pressure plate to rotate in the same direction by taking the central symmetry axis of the clamping module as the rotation center, so that the pressing block contracts or expands along the radial direction towards the direction close to or far from the center of the clamping module.
As a preferred technical scheme of the invention, the shrinkage or expansion mode specifically comprises the following steps:
the driving screw rod reciprocates along the direction perpendicular to the center symmetry axis of the pressing block, and along with the movement of the screw rod, the first pressing plate and the second pressing plate simultaneously rotate clockwise or anticlockwise by taking the center symmetry axis of the clamping module as a rotation center, so that the pressing block contracts along the radial direction towards the center of the clamping module, or the pressing block expands along the radial direction away from the center of the clamping module.
According to the invention, the knob is rotated to drive the screw rod to screw in or screw out of the knob, so that the screw rod can reciprocate along the direction perpendicular to the central symmetry axis of the pressing block.
Compared with the prior art, the invention has the beneficial effects that:
according to the pressing and holding device and method for the valve support, the driving screw rod is adopted to do reciprocating motion along the direction perpendicular to the central symmetry axis of the pressing block, and then the first pressing plate and the second pressing plate are driven to rotate in the same direction, so that the clamping module between the first pressing plate and the second pressing plate is contracted or expanded, radial contraction and uniform curling of the support can be achieved, the operation is simple, the effective pressing and holding length is improved, the adaptability is wide, and the protection performance on the support is higher.
Drawings
FIG. 1 is an exploded view of a crimping device for a valve stent according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a briquette according to an embodiment of the present invention;
FIG. 3 is a schematic view of a connecting rod according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first platen according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first housing according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second housing according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a base according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a first connection seat according to an embodiment of the present invention;
FIG. 9 is a schematic view of a screw according to an embodiment of the present invention;
FIG. 10 is a schematic view of a knob according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a fixing rod according to an embodiment of the present invention.
Wherein 10-the first housing; 101-a first chute; 102-a first leg; 11-a second housing; 111-a second chute; 112-a second leg; 12-a second through hole; 20-a first platen; 201-a first limiting hole; 21-a second platen; 211-a second limiting hole; 22-a first through hole; 23-fixing holes; 30-briquetting; 301-a first boss; 302-a second boss; 40-connecting rods; 50-a knob; 60-base; 70-screw; 80-a first connection base; 801-a first groove; 802-a second groove; 81-a second connection base; 90-fixing rod; 901-positioning holes; 100-screw.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
In one specific embodiment, the invention provides a pressing and holding device for a valve support, which comprises a transmission mechanism and a clamping module, wherein the clamping module comprises at least three pressing blocks 30, and the at least three pressing blocks 30 are uniformly distributed in a central symmetry mode; the transmission mechanism comprises a first pressure plate 20, a second pressure plate 21, a driving assembly and a screw rod 100, wherein the first pressure plate 20 and the second pressure plate 21 are respectively positioned on two sides of the clamping module and are movably connected with the pressing block 30, the screw rod 100 is respectively connected with the first pressure plate 20 and the second pressure plate 21, the driving assembly is used for driving the screw rod 100 to reciprocate and drives the first pressure plate 20 and the second pressure plate 21 to rotate in the same direction by taking a central symmetry axis of the clamping module as a rotation center, so that the pressing block 30 contracts or expands along a radial direction towards or away from the center of the clamping module.
According to the pressing and holding device for the valve support, the driving assembly is adopted to drive the screw rod 100 to do reciprocating motion along the direction perpendicular to the central symmetry axis of the pressing block 30, so that the first pressing plate 20 and the second pressing plate 21 are driven to simultaneously rotate in the same direction, the clamping module between the first pressing plate 20 and the second pressing plate 21 is contracted or expanded, and even pressing and holding of the support is achieved.
In some embodiments, the first platen 20 and the second platen 21 are fixed by at least two connecting rods 40. The two ends of the connecting rod 40 are respectively connected with the first pressure plate 20 and the second pressure plate 21 through bolts. The first platen 20 and the second platen 21 simultaneously rotate in the same direction along with the reciprocating movement of the screw 100.
In some embodiments, the press-holding device for a valve support further includes a first housing 10, a second housing 11, and a base 60, where the base 60 is used to fix the first housing 10 and the second housing 11 respectively, the first housing 10 is sleeved on a side of the first pressure plate 20 away from the clamping module, and the second housing 11 is sleeved on a side of the second pressure plate 21 away from the clamping module.
At least three first sliding grooves 101 are formed in the surface of the first housing 10 along the circumferential direction, at least three second sliding grooves 111 are formed in the surface of the second housing 11 along the circumferential direction, and two ends of the pressing block 30 are respectively and slidably connected with the first sliding grooves 101 and the second sliding grooves 111.
In some embodiments, at least one connecting seat is provided in the base 60, at least one first support column 102 is provided at the bottom of the first housing 10, at least one second support column 112 is provided at the bottom of the second housing 11, a first groove 801 and a second groove 802 are provided in the connecting seat, after the first housing 10 and the second housing 11 are buckled, the first support column 102 stretches into the first groove 801, and the second support column 112 stretches into the second groove 802 to fix.
In some embodiments, the surfaces of the first platen 20 and the second platen 21 are provided with a first through hole 22, the surfaces of the first housing 10 and the second housing 11 are provided with a second through hole 12, and the first through hole 22, the second through hole 12 and the clamping module are concentrically arranged.
In some embodiments, the pressing block 30 is provided with a first boss 301 and a second boss 302, the first boss 301 passes through the first pressing plate 20 and is slidably connected to the first housing 10, and the second boss 302 passes through the second pressing plate 21 and is slidably connected to the second housing 11.
To assist those skilled in the art in better understanding the overall solution and operation of the present invention, the present invention illustratively provides the following specific structures for the compacts 30: the pressing block 30 comprises a first end and a second end, the first boss 301 and the second boss 302 are respectively arranged at two ends of the first end, the second end is a guide part with a gradually reduced thickness, the guide parts of the pressing blocks 30 of the clamping module are sequentially arranged along the circumferential direction, and all the guide parts can be tightly attached to each other in the pressing and holding process to realize shrinkage. The first boss 301 and the second boss 302 are cylindrical bosses.
In some embodiments, the surface of the first platen 20 is provided with at least three first limiting holes 201 along the circumferential direction, the surface of the second platen 21 is provided with at least three second limiting holes 211 along the circumferential direction, the first boss 301 passes through the first limiting holes 201 and is slidingly connected to the first chute 101, and the second boss 302 passes through the second limiting holes 211 and is slidingly connected to the second chute 111. The first chute 101 and the second chute 111 are arc-shaped grooves.
In the invention, the first limiting holes 201 on the surface of the first pressure plate 20 are in one-to-one correspondence with the first bosses 301 of the pressure block 30, and the second limiting holes 211 on the surface of the second pressure plate 21 are in one-to-one correspondence with the second bosses 302 of the pressure block 30. The first boss 301 passes through the first limiting hole 201 and extends into the first chute 101, the second boss 302 passes through the second limiting hole 211 and extends into the second chute 111, when the first pressure plate 20 and the second pressure plate 21 rotate in the same direction, the first boss 301 is driven to move in the first chute 101, and meanwhile, the second boss 302 moves along the second chute 111, so that the pressing block 30 gathers or spreads along the center radial direction of the clamping module. The shapes of the first limiting hole 201 and the second limiting hole 211 are not particularly limited or restricted, and rectangular long holes can be used for example. The at least three first limiting holes 201 are distributed in a central symmetry mode, and the at least three second limiting holes 211 are distributed in a central symmetry mode.
In some embodiments, the driving assembly includes a knob 50, one end of the screw 100 is screwed into the knob 50, and the other end of the screw 100 is fixedly connected to the first platen 20 and the second platen 21. In the use process, the knob 50 is rotated, the screw 100 is gradually screwed into the knob 50, and the first pressure plate 20 and the second pressure plate 21 are driven to rotate anticlockwise or clockwise by taking the central symmetry axis of the clamping module as the rotation center, so that a plurality of pressing blocks 30 in the clamping module are gathered together to realize shrinkage; the knob 50 is rotated, the screw 100 gradually rotates out of the knob 50, and drives the first pressure plate 20 and the second pressure plate 21 to rotate clockwise or anticlockwise by taking the central symmetry axis of the clamping module as the rotation center, so that the plurality of pressing blocks 30 in the clamping module are mutually dispersed, and expansion is realized. Wherein the first direction and the second direction are opposite directions.
In some embodiments, the screw 100 includes a driving portion and a connecting portion, the driving portion is screwed into the knob 50, the surfaces of the first platen 20 and the second platen 21 are provided with fixing holes 23, and two ends of the connecting portion respectively extend into the fixing holes 23 to be connected. The driving assembly further comprises a fixing rod 90, the fixing rod 90 is perpendicular to the central symmetry axis of the clamping module, the screw 100 is sleeved on the part of the peripheral wall of the fixing rod 90 and reciprocates along the outer wall of the fixing rod 90, the driving part of the screw 100 is internally provided with a hollow cavity, and the fixing rod 90 penetrates through the driving part and is fixedly connected with the first shell 10. The driving part and the connecting part form an inverted T shape. The outer wall of the driving part is provided with threads which are meshed with the inner wall of the knob 50 to screw in and out the screw 100, and two ends of the connecting part are respectively fixedly connected with the first pressure plate 20 and the second pressure plate 21 through the screws 70, so that the screw 100 is screwed in and out, the fixed rod 90 is kept still in the pressing and holding process, and the screw 100 reciprocates along the outer wall of the fixed rod 90 under the driving of the knob 50, so that the first pressure plate 20 and the second pressure plate 21 are driven to rotate in the same direction. The connection mode of the fixing rod 90 and the first housing 10 is not particularly limited or required, and for example, a positioning hole 901 may be formed at one end of the fixing rod 90 extending out of the screw 100, and the fixing rod 90 and the first housing 10 may be fixedly connected by using the long screw 70, and the fixing rod 90 is perpendicular to the central symmetry axis of the clamping module.
In another embodiment, the present invention provides a crimping method for a valve stent, the crimping method employing a crimping device according to one embodiment, the crimping method comprising:
the driving screw 100 reciprocates, so as to drive the first pressure plate 20 and the second pressure plate 21 to rotate in the same direction by taking the central symmetry axis of the clamping module as the rotation center, so that the pressing block 30 contracts or expands along the radial direction towards or away from the center of the clamping module.
The shrinkage or expansion mode specifically comprises the following steps:
the driving screw 100 reciprocates along a direction perpendicular to the central symmetry axis of the pressing block 30, and along with the movement of the screw 100, the first pressing plate 20 and the second pressing plate 21 simultaneously rotate clockwise or anticlockwise by taking the central symmetry axis of the clamping module as a rotation center, so that the pressing block 30 contracts along a radial direction towards the center of the clamping module, or the pressing block 30 expands along a radial direction away from the center of the clamping module.
Examples
The embodiment provides a pressing and holding device for a valve support, which comprises a transmission mechanism and a clamping module. As shown in fig. 1, the clamping module is formed by sequentially arranging eight pressing blocks 30, and the eight pressing blocks 30 are uniformly distributed in a central symmetry mode and can be tightly attached to each other in the pressing and holding process to realize shrinkage. As shown in fig. 2, each of the compacts 30 is provided with a first boss 301 and a second boss 302 which are cylindrical.
As shown in fig. 1, the transmission mechanism includes a first pressure plate 20 and a second pressure plate 21 located at two sides of the clamping module, and the first pressure plate 20 and the second pressure plate 21 are fixed by bolts through four connecting rods 40 as shown in fig. 3. One side of the first pressure plate 20, which is far away from the clamping module, is sleeved with a first shell 10, and one side of the second pressure plate 21, which is far away from the clamping module, is sleeved with a second shell 11. As shown in fig. 4, eight first limiting holes 201 are formed in the surface of the first platen 20 in the circumferential direction, and eight second limiting holes 211 are formed in the surface of the second platen 21 in the circumferential direction. As shown in fig. 5 and 6, eight first sliding grooves 101 are formed in the surface of the first housing 10 along the circumferential direction, eight second sliding grooves 111 are formed in the surface of the second housing 11 along the circumferential direction, the first sliding grooves 101 are uniformly distributed on the surface of the first housing 10 in a central symmetry manner, and the second sliding grooves 111 are uniformly distributed on the surface of the second housing 11 in a central symmetry manner. The surface of first pressure disk 20 and second pressure disk 21 has seted up first through-hole 22, and the surface of first casing 10 and second casing 11 has seted up second through-hole 12, and first through-hole 22, second through-hole 12 and centre gripping module set up concentrically. The first boss 301 passes through the first limiting hole 201 and extends into the first chute 101, the second boss 302 passes through the second limiting hole 211 and extends into the second chute 111, when the first pressure plate 20 and the second pressure plate 21 rotate in the same direction, the first boss 301 is driven to move in the first chute 101, and meanwhile, the second boss 302 moves along the second chute 111, so that the pressing block 30 gathers or spreads along the center radial direction of the clamping module.
The bottoms of the first casing 10 and the second casing 11 are provided with a base 60, as shown in fig. 7, a first connecting seat 80 and a second connecting seat 81 are provided in the base 60, and as shown in fig. 8, a first groove 801 and a second groove 802 are provided in the first connecting seat 80 and the second connecting seat 81, respectively. As shown in fig. 6, two first struts 102 are disposed at the bottom of the first housing 10, and the two first struts 102 respectively extend into the first grooves 801 of the first connection seat 80 and the second connection seat 81. As shown in fig. 7, two second struts 112 are disposed at the bottom of the second housing 11, and the two second struts 112 respectively extend into the second grooves 802 of the first connecting seat 80 and the second connecting seat 81 to fix the first housing 10, the second housing 11 and the base 60.
The transmission mechanism further includes a knob 50, a fixed rod 90, and a screw 100. As shown in fig. 9, 10 and 11, one end of the screw 100 is screwed into the knob 50, and the other end is fixedly connected to the first platen 20 and the second platen 21. The screw 100 includes a driving portion and a connecting portion, the driving portion and the connecting portion form an inverted T shape, the driving portion is screwed into the knob 50, as shown in fig. 2, the surfaces of the first platen 20 and the second platen 21 are provided with fixing holes 23, and two ends of the connecting portion respectively extend into the fixing holes 23 to be fixed. The inside of the driving part is a hollow cavity, the fixing rod 90 penetrates through the driving part and is fixedly connected with the first shell 10, one end of the fixing rod 90 extending out of the screw 100 is provided with a positioning hole 901, and the fixing rod 90 is fixedly connected with the first shell 10 by adopting a long screw 70. The fixing rod 90 is perpendicular to the central symmetry axis of the clamping module, in the pressing and holding process, the fixing rod 90 keeps static, the screw 100 reciprocates along the outer wall of the fixing rod 90 under the driving of the knob 50, and then the first pressure plate 20 and the second pressure plate 21 are driven to rotate in the same direction, so that the clamping module is contracted and then expanded.
The operating principle of the press-holding device for the valve stent provided in this embodiment is as follows:
the knob 50 is assembled to the fixed rod 90 from top to bottom, the knob 50 is rotated, the screw 100 is driven to be gradually screwed into the knob 50, and along with the movement of the screw 100, the first pressure plate 20 and the second pressure plate 21 simultaneously rotate anticlockwise by taking the central symmetry axis of the clamping module as the rotation center, so that the pressing block 30 contracts in the radial direction towards the center of the clamping module;
the knob 50 is rotated, the screw 100 is driven to unscrew the knob 50, and along with the movement of the screw 100, the first pressure plate 20 and the second pressure plate 21 simultaneously rotate clockwise by taking the central symmetry axis of the clamping module as the rotation center, so that the pressing block 30 expands along the radial direction away from the center of the clamping module.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
Claims (10)
1. The pressing and holding device for the valve support is characterized by comprising a transmission mechanism and a clamping module, wherein the clamping module comprises at least three pressing blocks which are uniformly distributed in a central symmetry mode;
the transmission mechanism comprises a first pressure plate, a second pressure plate, a driving assembly and a screw rod, wherein the first pressure plate and the second pressure plate are respectively positioned at two sides of the clamping module and are movably connected with the pressing block, the screw rod is respectively connected with the first pressure plate and the second pressure plate, the driving assembly is used for driving the screw rod to reciprocate and drives the first pressure plate and the second pressure plate to rotate in the same direction by taking a central symmetry axis of the clamping module as a rotation center, so that the pressing block contracts or expands along a direction which is radially close to or far away from the center of the clamping module.
2. The crimping device for a valve stent of claim 1, further comprising a first housing, a second housing, and a base, the base being configured to secure the first housing and the second housing, respectively, the first housing being disposed around the first platen, the second housing being disposed around the second platen;
at least three first sliding grooves are formed in the surface of the first shell along the circumferential direction, at least three second sliding grooves are formed in the surface of the second shell along the circumferential direction, and two ends of the pressing block are respectively connected with the first sliding grooves and the second sliding grooves in a sliding mode.
3. The crimping device for a valve stent of claim 2, wherein at least one connecting seat is provided in the base, a first groove and a second groove are provided in the connecting seat, at least one first pillar is provided at the bottom of the first housing, at least one second pillar is provided at the bottom of the second housing, after the first housing and the second housing are buckled, the first pillar stretches into the first groove, and the second pillar stretches into the second groove to fix.
4. The crimping device for a valve stent of claim 1, wherein the first platen and the second platen are fixed by at least two connecting rods;
the two ends of the connecting rod are respectively connected with the first pressure plate and the second pressure plate through bolts.
5. The crimping device for a valve holder of claim 2, wherein the surfaces of the first platen and the second platen are provided with first through holes, the surfaces of the first housing and the second housing are provided with second through holes, and the first through holes, the second through holes and the clamping module are concentrically arranged.
6. The crimping device for a valve holder of claim 1, wherein the drive assembly comprises a knob into which one end of the screw is screwed, the other end of the screw being connected to the first platen and the second platen, respectively;
the screw comprises a driving part and a connecting part, wherein the driving part and the connecting part form an inverted T shape, the driving part is screwed into the knob, and two ends of the connecting part are respectively and detachably connected with the first pressure plate and the second pressure plate.
7. The crimping device for a valve holder according to claim 2, wherein the driving assembly further comprises a fixing rod perpendicular to a central symmetry axis of the clamping module, the screw rod is sleeved on a part of the peripheral wall of the fixing rod and reciprocates along the outer wall of the fixing rod, and one end of the fixing rod extending out of the screw rod is fixedly connected with the first shell.
8. The crimping device for a valve holder of claim 2, wherein the press block is provided with a first boss and a second boss, the first boss passing through the first platen and being slidably connected to the first housing, the second boss passing through the second platen and being slidably connected to the second housing;
at least three first limiting holes are formed in the surface of the first pressure plate along the circumferential direction, at least three second limiting holes are formed in the surface of the second pressure plate along the circumferential direction, the first boss penetrates through the first limiting holes and is in sliding connection with the first sliding chute, and the second boss penetrates through the second limiting holes and is in sliding connection with the second sliding chute;
the at least three first limiting holes are distributed in a central symmetry mode, and the at least three second limiting holes are distributed in a central symmetry mode.
9. A crimping method for a valve stent, wherein the crimping method for a valve stent employs the crimping device for a valve stent according to any one of claims 1 to 8, the crimping method comprising:
the driving screw reciprocates, and then drives the first pressure plate and the second pressure plate to rotate in the same direction by taking the central symmetry axis of the clamping module as the rotation center, so that the pressing block contracts or expands along the radial direction towards the direction close to or far from the center of the clamping module.
10. The crimping method for a valve stent of claim 9, wherein the manner of contraction or expansion is specifically:
the driving screw rod reciprocates along the direction perpendicular to the center symmetry axis of the pressing block, and along with the movement of the screw rod, the first pressing plate and the second pressing plate simultaneously rotate clockwise or anticlockwise by taking the center symmetry axis of the clamping module as a rotation center, so that the pressing block contracts along the radial direction towards the center of the clamping module, or the pressing block expands along the radial direction away from the center of the clamping module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310108143.3A CN116019599A (en) | 2023-02-14 | 2023-02-14 | Pressing and holding device and method for valve stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310108143.3A CN116019599A (en) | 2023-02-14 | 2023-02-14 | Pressing and holding device and method for valve stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116019599A true CN116019599A (en) | 2023-04-28 |
Family
ID=86073907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310108143.3A Pending CN116019599A (en) | 2023-02-14 | 2023-02-14 | Pressing and holding device and method for valve stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116019599A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805676A (en) * | 2012-08-14 | 2012-12-05 | 杭州启明医疗器械有限公司 | Compression device for artificial valve replacement device |
| CN109475413A (en) * | 2016-06-24 | 2019-03-15 | 爱德华兹生命科学公司 | Compact crimping device |
| CN110740712A (en) * | 2017-06-06 | 2020-01-31 | 托尔福公司 | Crimping device for loading stents and prosthetic heart valves |
| CN111629693A (en) * | 2017-12-13 | 2020-09-04 | 爱普贡公司 | Crimping device for collapsible valve |
| CN111870395A (en) * | 2020-07-27 | 2020-11-03 | 上海纽脉医疗科技有限公司 | Press-holding system and press-holding method |
| CN216221858U (en) * | 2021-12-14 | 2022-04-08 | 上海蓝帆博奥医疗科技有限公司 | Pressing and holding device for medical support |
| CN115068168A (en) * | 2021-03-15 | 2022-09-20 | 上海纽脉医疗科技有限公司 | Pressing and holding machine and pressing and holding method |
| CN217472161U (en) * | 2021-12-15 | 2022-09-23 | 沛嘉医疗科技(苏州)有限公司 | Pressing and holding device and measuring system |
| CN217611578U (en) * | 2022-02-09 | 2022-10-21 | 沛嘉医疗科技(苏州)有限公司 | Pressing and holding device |
| CN217793488U (en) * | 2022-06-01 | 2022-11-15 | 上海微创心通医疗科技有限公司 | Press-holding device |
-
2023
- 2023-02-14 CN CN202310108143.3A patent/CN116019599A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805676A (en) * | 2012-08-14 | 2012-12-05 | 杭州启明医疗器械有限公司 | Compression device for artificial valve replacement device |
| CN109475413A (en) * | 2016-06-24 | 2019-03-15 | 爱德华兹生命科学公司 | Compact crimping device |
| CN110740712A (en) * | 2017-06-06 | 2020-01-31 | 托尔福公司 | Crimping device for loading stents and prosthetic heart valves |
| CN111629693A (en) * | 2017-12-13 | 2020-09-04 | 爱普贡公司 | Crimping device for collapsible valve |
| CN111870395A (en) * | 2020-07-27 | 2020-11-03 | 上海纽脉医疗科技有限公司 | Press-holding system and press-holding method |
| CN115068168A (en) * | 2021-03-15 | 2022-09-20 | 上海纽脉医疗科技有限公司 | Pressing and holding machine and pressing and holding method |
| CN216221858U (en) * | 2021-12-14 | 2022-04-08 | 上海蓝帆博奥医疗科技有限公司 | Pressing and holding device for medical support |
| CN217472161U (en) * | 2021-12-15 | 2022-09-23 | 沛嘉医疗科技(苏州)有限公司 | Pressing and holding device and measuring system |
| CN217611578U (en) * | 2022-02-09 | 2022-10-21 | 沛嘉医疗科技(苏州)有限公司 | Pressing and holding device |
| CN217793488U (en) * | 2022-06-01 | 2022-11-15 | 上海微创心通医疗科技有限公司 | Press-holding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116019599A (en) | Pressing and holding device and method for valve stent | |
| CN2845770Y (en) | Medical rack | |
| CN116370048A (en) | Gun type spine minimally invasive surgery channel expander | |
| CN215081945U (en) | Recovered massage device of peritoneoscope postoperative | |
| WO2021260614A1 (en) | Artificial heart muscle | |
| CN110584845B (en) | Human body interbody fusion cage structure and preparation method thereof | |
| CN209863927U (en) | Hepatobiliary surgery expanding unit | |
| EP2579909B1 (en) | Cardiovascular device | |
| CN2448296Y (en) | Digestive vessel shape anastomat stoma | |
| CN218128727U (en) | Intervertebral operation negative pressure clearance equipment | |
| KR20020062914A (en) | Orthotopic total artificial heart | |
| CN116849804B (en) | Mechanical arm and laparoscopic surgical instrument | |
| CN217066580U (en) | Combined support for surgical equipment | |
| CN111773459B (en) | Flexible traveling wave driven heart micropump and driving method thereof | |
| CN217960930U (en) | Continuous body instrument capable of growing and surgical robot | |
| US20230181873A1 (en) | Growable continuum instrument and surgical robot | |
| CN113827384B (en) | Vascular stent with composite structural unit | |
| CN217186590U (en) | Heart valve replacement prosthesis and stent thereof | |
| CN215534684U (en) | Incision expander for general external clinical use | |
| CN220608361U (en) | Hemostatic balloon for duodenal ulcer hemorrhage | |
| CN218870420U (en) | Auxiliary positioning target for breast surgery | |
| CN112237497B (en) | Tissue clamping device in wire control mode | |
| CN209074695U (en) | A kind of trephine for skin biopsy | |
| CN218685728U (en) | Ventricular external pressing type cardiac contraction auxiliary device | |
| RU2242252C2 (en) | Device for applying assist and substitutive blood circulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230428 |
|
| RJ01 | Rejection of invention patent application after publication |