WO2014026555A1 - 人造瓣膜置换装置的压缩装置 - Google Patents

人造瓣膜置换装置的压缩装置 Download PDF

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Publication number
WO2014026555A1
WO2014026555A1 PCT/CN2013/080868 CN2013080868W WO2014026555A1 WO 2014026555 A1 WO2014026555 A1 WO 2014026555A1 CN 2013080868 W CN2013080868 W CN 2013080868W WO 2014026555 A1 WO2014026555 A1 WO 2014026555A1
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WO
WIPO (PCT)
Prior art keywords
artificial valve
clamping unit
valve replacement
unit blocks
replacement device
Prior art date
Application number
PCT/CN2013/080868
Other languages
English (en)
French (fr)
Inventor
雷荣军
訾振军
Original Assignee
杭州启明医疗器械有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 杭州启明医疗器械有限公司 filed Critical 杭州启明医疗器械有限公司
Priority to EP13830003.3A priority Critical patent/EP2886082B1/en
Priority to US14/418,582 priority patent/US10098735B2/en
Priority to JP2015526862A priority patent/JP5956076B2/ja
Priority to RU2015104885A priority patent/RU2614497C2/ru
Publication of WO2014026555A1 publication Critical patent/WO2014026555A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2427—Devices for manipulating or deploying heart valves during implantation
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53657—Means to assemble or disassemble to apply or remove a resilient article [e.g., tube, sleeve, etc.]

Definitions

  • the present invention relates to a compression device, and more particularly to a compression device for an artificial valve replacement device.
  • Heart valves can be divided into open insufficiency and insufficiency. Both of these conditions can cause an increase in cardiac load. Whether the heart can work normally under this load is the main basis for determining whether the heart valve should be replaced.
  • the current method is to use a surgical valve to change the valve. The doctor should open the chest for the patient to stop the heart and connect it to the cardiopulmonary circulatory system. Then open the patient's heart to remove the diseased heart valve, then place the artificial replacement flap in place, and finally suture the heart and chest. This is a very traumatic surgical procedure. There is a certain risk of death. The patient has a long recovery time. Many patients are unable to bear the body due to the trauma of the operation. Although they need to change the valve, they cannot perform the operation.
  • the prosthetic valve replacement device includes a nickel-titanium memory alloy stent that supports the leaflets and is introduced into the lumen of the body vessel via a catheterization technique. Before entering the body, it needs to be compressed and loaded into the delivery sheath to accommodate the inner diameter of the blood vessel to avoid scratching the inner wall of the blood vessel.
  • a crimped structure is disclosed, which is a combination of multiple wedge blocks to form a closed perimeter.
  • the polygonal columnar space is rotated synchronously to the axis by each wedge block to realize the compression and expansion of the regular polygonal columnar space.
  • the design needs to increase the sliding path and the synchronous driving structure for maintaining the wedge block translation on the periphery of the wedge block. Plus the support part.
  • the device has a complicated structure and high manufacturing cost.
  • the device has a large outer dimension. This makes it impossible to use a simple cooling method (such as a flat plate with a mixture of ice and water) to perform a martensitic transformation treatment on the nickel-titanium memory alloy stent, so that the stent is softened at a low temperature and then compressed, such as allowing the stent to be in austenite. Compressed in phase, it will produce several times the radial support force, which will result in difficulty in loading and damage to the sheath.
  • a simple cooling method such as a flat plate with a mixture of ice and water
  • the present invention provides a compression device for a prosthetic valve replacement device which is simple in structure, convenient in operation, convenient in cleaning, and low in production cost.
  • a compression device for an artificial valve replacement device comprising a clamping unit block, the clamping unit block clamping unit block has at least two pieces, and each clamping unit block is sequentially connected and encloses one
  • the zoom channel is also provided with a guiding structure for guiding each of the jaw unit blocks to the center of the zoom channel.
  • the clamping unit block includes a connecting portion, and a row of comb-shaped connecting arms fixed on both sides of the connecting portion, and each of the clamping unit blocks is slidably engaged by an adjacent connecting arm.
  • the connecting arm is composed of a plurality of sheet-like comb teeth, and the comb teeth are arranged along the axial direction of the zooming passage.
  • connecting portion and the comb-shaped connecting arm integrated structure fixed on both sides of the connecting portion are identical in shape, and the clamping unit block has the same shape.
  • a clamping unit block can be directly molded by a die, and since the shapes of the respective clamping unit blocks are completely the same, the clamping unit block can pass the same A mold is cast, which not only saves the cost of mold manufacturing and maintenance, but also increases production efficiency.
  • the sliding arm is provided with a corresponding guiding groove between the connecting arms, and the guiding groove is inserted with a retaining insert, and the guiding groove and the inserted anti-dropping insert form the guiding structure.
  • the positions of the guiding grooves correspond to each other, that is, the connecting arms of the two adjacent clamping unit blocks are respectively provided with guiding grooves, and the two guiding grooves are superimposed or overlapped with each other, and then superimposed or overlapped.
  • a retaining insert is inserted into the rear guiding groove.
  • the function of the detachment preventing insert is not only for preventing the two adjacent jaw unit blocks from being detached from each other, but also for guiding the movement of the two adjacent jaw unit blocks. Due to the limit of the anti-dropping insert, when the two connecting arms are away from each other, the guiding grooves on the two connecting arms will also be staggered away. At this time, since the anti-detaching inserts play the role of connecting and guiding in the middle, the two connecting arms are They are far apart from each other, but are not completely detached, thereby ensuring relative movement between two adjacent jaw unit blocks and not separating.
  • the axial section of the zoom channel is a regular polygon.
  • the positive polygon formed by the zoom channel is a dynamic regular polygon.
  • the zoom channel will also shrink toward the center, but the zoom channel is always in a dynamic state regardless of the zoom channel. The process of change, and always remains a regular polygon.
  • the number of the clamping unit blocks is N blocks, and N-1 or N of the anti-dropping inserts are anti-rotation sliders.
  • the anti-offset insert can be uniformly classified into two structures: columnar or block-shaped, and the column-shaped anti-dropping insert can be simply referred to as a anti-desorption column, and the anti-off-column can also realize the guiding between two adjacent clamping unit blocks.
  • the degree of freedom of rotation between the two jaw unit blocks cannot be limited, so that relative rotation between the two jaw unit blocks by the anti-seismic column limit occurs.
  • the block-shaped anti-dropping insert is called an anti-rotation slider.
  • the zoom channel will be divided into two movable units by the connection of the two detachment prevention columns, and each of the two anti-detachment columns on the movable unit has a a rotational degree of freedom and a translational freedom in the direction of the guiding groove, so that the two movable units as a whole will be relatively rotated by the two degrees of rotational freedom, so that the folding of the zooming device on the compression device at this time will have other Track. If the motion track when the zoom channel is folded is not unique, it will inevitably affect the accuracy and accuracy of the zoom channel collapse, thus affecting the quality of the artificial valve replacement device after contraction.
  • the anti-dropping plug with the rotational freedom on the entire compression device cannot be more than one, that is, when the number of the clamp unit blocks is N, the anti-rotation slider is at least N-1.
  • the anti-desorption column can be rotated in the guiding groove, that is, the relative rotation between the two clamping unit blocks through the anti-desorption column limit, especially when the external force exerts uneven force on each clamping unit block, It is easy to appear that the position of the clamping unit block by the anti-separation column is relatively rotated, that is, the axial section of the zooming channel cannot always maintain a regular polygonal structure during the folding process, thereby causing the scaling channel pair artificial valve replacement device The uneven compression force exerted by the peripheral wall will eventually cause the peripheral wall of the artificial valve replacement device to collapse, affecting the quality of compression of the artificial valve replacement device.
  • the number of the clamping unit blocks is three
  • the anti-drop insert is two or three anti-rotation sliders
  • the guide grooves in any two guiding structures are disposed at an angle of 60°.
  • the number of optimized clamping unit blocks is three, and three are also the minimum number of clamping unit blocks, so that the crimping operation of the artificial valve replacement device is completed, so that the clamping unit block is
  • the structure is the most simplified, and the production cost and maintenance cost are reduced to some extent.
  • the number of the clamping unit blocks is small, the operation of cleaning the clamping unit block is also more convenient, and the difficulty of cleaning is relatively reduced, and the hygienic condition of the artificial valve replacement device during the curling operation is improved.
  • the guiding grooves in any two guiding structures are disposed at an angle of 60°, that is, the angle between the lengths of the two guiding grooves is 60°, then when the three clamping unit blocks are gathered toward the center of the zooming channel
  • the unit movement time of each clamp unit block is consistent, that is, the speed of the zoom channel is the same, the section of the zoom channel is always a dynamically changing regular polygon structure.
  • the two connecting arms of the same clamping unit block form an angled groove of 120° toward one side of the zooming channel.
  • the structure of the three jaw unit blocks is simple and the volume is small, when the artificial valve replacement device is subjected to the crimping operation, the entire compression device can be completely submerged in the freezing liquid, and the amount of the frozen liquid consumed is not Large, as for cleaning, it is more simple and convenient.
  • the number of the clamping unit blocks is six.
  • the more uniform the circumferential force is applied to the artificial valve replacement device the more stable the artificial valve replacement device is, and the recession of the peripheral wall of the artificial valve replacement device is not easy to occur, and the artificial valve replacement device in the crimping process is also played. protection.
  • the beneficial effects of the present invention are: when the artificial valve replacement device is placed in the zoom channel, the inner wall of the zoom channel abuts against the peripheral wall of the artificial valve replacement device, and when the external force is applied, each of the jaw unit blocks is guided by the guiding structure When the center of the zoom channel is collapsed, the inner wall of the zoom channel will collectively apply a force directed toward the center of the zoom channel to the peripheral wall of the artificial valve replacement device.
  • the structure of the invention is simple, so that the overall manufacturing cost is correspondingly reduced, and the operation of the invention is also more convenient, and only the jaw unit blocks are driven to move along the guiding structure, so that the jaw unit blocks are moved.
  • the center of the zoom channel can be collapsed, and the inner wall of the zoom channel will provide a compressive force to the peripheral wall of the artificial valve replacement device.
  • the invention not only has a simple structure, but also is convenient to clean, and helps to meet the requirements for hygiene. In addition, in terms of overall material, production and maintenance, the invention also reduces production and maintenance costs, thereby reducing the transfer to consumption. The cost of the person.
  • FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is an exploded view of Figure 1.
  • Fig. 3 is a plan view showing a first embodiment of the present invention.
  • FIG. 5 is an exploded view of another perspective of the embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of the present invention.
  • Figure 7 is a plan view of a second embodiment of the present invention.
  • Figure 8 is an exploded view of Figure 6.
  • Figure 9 is a plan view showing the collapsed state of the third embodiment of the present invention.
  • Figure 10 is a plan view showing a state in which the third embodiment of the present invention is unfolded.
  • Figure 11 is an exploded view of a third embodiment of the present invention.
  • Embodiment 1 As shown in FIG. 1-5, the present embodiment includes three clamping unit blocks 1, the clamping unit block 1 is connected by the connecting portion 11, and the comb-shaped connecting arms 12 fixed to the two sides of the connecting portion 11 The combs of the comb-like structure of the connecting arms 12 are arranged in the axial direction of the zooming channel 2.
  • the three clamping unit blocks 1 are connected in sequence through the connecting arms 12 to form a closed annular structure.
  • the center of the annular structure is a zooming channel 2, and the two adjacent connecting arms 12 are interleaved and form a sliding fit.
  • the comb-like structure of the connecting arm 12 is a plurality of plate-like and parallel-arranged comb teeth 121, and the comb teeth 121 are axially arranged along the zooming channel 2, that is, the side of the clamping unit block 1 facing the zooming channel 2
  • the gap can ensure the circulation of the frozen liquid.
  • the artificial valve replacement device is crimped, the frozen liquid can freely enter the zoom channel 2 from the gap.
  • the artificial valve replacement device can directly contact the freezing liquid, thereby cooling the artificial valve replacement device as soon as possible, and the memory alloy stent is softened, so that each of the clamping unit blocks 1 can compress the artificial valve replacement device.
  • the connection portion 11 and the connecting arm 12 are integrally formed, and the three jaw unit blocks 1 have the same shape and size, so that they can be uniformly manufactured by a mold.
  • a guiding structure 3 is arranged between two adjacent connecting arms 12, and the entire compression device is provided with a total of three guiding structures 3 for guiding the jaw unit block 1 to the center of the zooming channel 2.
  • Each of the guiding structures 3 includes guiding grooves 31 respectively corresponding to the same linear position on the two adjacent connecting arms 12, and a retaining insert 32 inserted in the guiding groove 31, and two guiding grooves 31 in the same guiding structure 3. They are respectively located on the two adjacent clamping unit blocks 1, and the longitudinal directions of the two guiding grooves 31 are parallel to each other, that is, the movement of the two clamping unit blocks 1 restricted by the same guiding structure 3 is in the same straight line.
  • the anti-offlet 32 of the three guiding structures 3 are all anti-rotation sliders, and the anti-rotation slider includes two connecting rods 321 which are arranged in parallel, and are respectively located at two ends of the connecting rod 321 and are used for fixing the two connecting rods 321
  • the connecting plate 322 has a width larger than the width of the notch of the guiding groove 31, thereby preventing the connecting rod 321 from coming out of the guiding groove 31 in its own axial direction.
  • Two connecting rods 321 arranged in parallel with each other are located on the same plane, and the whole structure can be regarded as a long block with a rectangular cross section, and the structure can restrict the relative rotation of the two adjacent connecting arms 12 in the guiding groove 31, and simultaneously It is ensured that the two connecting arms 12 are not disengaged in the direction of the guiding groove 31.
  • two of the three anti-dropping inserts 32 can be anti-rotation sliders, and the third is a anti-dropping column with a circular cross-section.
  • the purpose of simultaneously clamping or expanding the zoom channel 2 of the three jaw unit blocks 1 under the respective guiding structures 3 can be achieved without causing relative rotation between any two adjacent jaw unit blocks 1.
  • the two connecting arms 12 of the same clamping unit block 1 are provided with an angular groove 13 having an angle of 120° toward one side of the zoom channel 2.
  • the edge of the upper corner of the angular groove 13 is disposed axially and extends through the clamping unit block 1 in the plane of the radial direction of the zoom channel 2, and the angular opening direction of the angular groove 13 faces the center of the zoom channel 2. Since the angular grooves 13 on the respective clamping unit blocks 1 facing the zooming passage 2 are both 120°, the cross section of the zooming passage 2 is made to be a regular hexagon, thereby ensuring uniform force on the peripheral wall of the artificial valve replacement device.
  • the guiding grooves 31 of any two guiding structures 3 are arranged at an angle of 60°, which is the length direction of the guiding groove 31 in any two guiding structures 3. Angle.
  • the zoom channel 2 will also be reduced toward the center, but regardless of how the zoom channel 2 is reduced, the zoom channel 2 is always in a dynamic process and always remains a regular hexagon. .
  • the axial section of the zoom channel 2 is a regular hexagon, when the peripheral wall of the artificial valve replacement device is stressed, the applied pressure is evenly distributed in the circumferential direction of the artificial valve replacement device, and the magnitude of each pressure is also the same. This makes it possible to realize the circumferential wall of the artificial valve replacement device to be gathered toward the center of the zoom channel 2, to ensure consistency during folding, and to avoid the case where the peripheral wall of the artificial valve replacement device is recessed inward due to uneven force and size.
  • the inner wall of the zoom channel 2 abuts against the peripheral wall of the artificial valve replacement device, and when the external force is applied, the respective jaw unit blocks 1 are simultaneously gathered toward the center of the zoom channel 2. At the same time, the inner wall of the zoom channel 2 will simultaneously apply a force directed to the center of the zoom channel 2 to the peripheral wall of the artificial valve replacement device.
  • the structure of the invention is simple, so that the overall manufacturing cost is correspondingly reduced, and the operation of the invention is also more convenient, and only the jaw unit 1 is driven to move along the guiding structure, and each clamping unit block 1 will automatically collapse toward the center of the zoom channel 2, and the inner wall of the zoom channel 2 will provide a pressure on the peripheral wall of the artificial valve replacement device to the center of the zoom channel 2 such that the artificial valve replacement device is compressed and gathered toward the center.
  • the invention not only has a simple structure, but also is easy to clean, helps to meet the hygiene requirements, and also reduces the production and maintenance costs, and reduces the cost of being passed on to the consumer.
  • the entire compression device can be completely submerged in the freezing liquid, and the amount of the frozen liquid consumed is not large. As for cleaning, it is more simple and convenient.
  • the three clamping unit blocks 1 can be separated outward by hand, which is convenient and easy to operate. And it takes up a small space and is convenient for operation in the operating room.
  • Embodiment 2 As shown in FIG. 6-8, this embodiment includes two clamping unit blocks 1a.
  • the clamping unit block 1a is composed of a connecting portion 11a, and a row of comb-shaped connecting arms 12a fixed to both sides of the connecting portion 11a.
  • the combs of the comb-like structure of the connecting arms 12a are arranged in the axial direction of the zooming passage 2a.
  • the two clamping unit blocks 1a are sequentially connected to each other through the connecting arms 12a to form a closed annular structure.
  • the center of the annular structure is a zooming channel 2a, and the two adjacent connecting arms 12a are interleaved and form a sliding fit.
  • the two anti-dropping inserts 32a are anti-rotation sliders of a block structure
  • the axial section of the anti-rotation slider is a square structure
  • the anti-rotation sliders are disposed at both ends of the anti-rotation slider along the axial direction thereof.
  • the limit plate of the guide groove 31a is taken out. Due to the arrangement of the anti-rotation slider, not only the movement of the two adjacent connecting arms 12a along the guiding groove 31a is restricted, but also the relative rotation of the two connecting arms 12a can be avoided.
  • one of the two anti-dropping inserts 32a is an anti-rotation slider, and the other is a anti-dropping column with a circular cross-section, which can also be realized.
  • the two jaw unit blocks 1a simultaneously close or open the zoom channel 2 under each of the guiding structures 3a.
  • the two connecting arms 12a of the same clamping unit block 1a open a 90° angled groove 13a toward one side of the zooming channel 2a, the angular groove
  • the opening direction of the upper corner of 13a faces the center of the zooming passage 2a, and causes the zooming passage 2a to enclose a regular quadrilateral structure.
  • Embodiment 3 As shown in FIG. 9-11, the embodiment includes four clamping unit blocks 1b, the clamping unit block 1b is composed of a connecting portion 11b, and a row of comb-shaped connecting arms 12b fixed to both sides of the connecting portion 11b.
  • the upper combs of the comb-like structure of the connecting arms 12b are arranged along the axial direction of the zooming passage 2b.
  • the four clamping unit blocks 1b are sequentially connected to each other through the connecting arms 12b to form a closed annular structure.
  • the center of the annular structure is a zooming channel 2b, and the two adjacent connecting arms 12b are interleaved and form a sliding fit.
  • a guiding structure 3b is provided between the two adjacent connecting arms, and the guiding structure 3b can withstand the guiding jaw unit block 1b to be gathered toward the center of the zooming channel 2b.
  • each guiding structure 3b includes a guiding groove 31b respectively located at a corresponding position on the two adjacent connecting arms 12b, and a retaining insert 32b inserted in the guiding groove 31b, and the anti-rotation insert 32b
  • the anti-rotation slider of the block structure has a square cross-section of the anti-rotation slider, and the two ends of the anti-rotation slider are provided with a limiting plate for placing the anti-rotation slider to disengage the guiding groove 31b along the axial direction thereof.
  • the two guiding grooves 31b on the same guiding structure 3b are located on the same straight line.
  • the anti-rotation insert 32b When the retaining insert 32b is inserted into the corresponding two guiding grooves 31b, the anti-rotation insert 32b will guide the two adjacent clamping unit blocks 1b along the guiding groove. 31b moves in the direction of the line.
  • the straight lines of the guiding grooves 31b of the four guiding structures 3b together form a rectangle, and the rectangle is circumferentially arranged around the zooming channel 2b.
  • the zooming channel 2b will be realized. The movement that gathers toward the center.
  • the two connecting arms 12b belonging to the same clamping unit block 1b form a 135° angular groove 13b toward the side of the zoom channel 2b, the angular groove
  • the corner opening direction of 13b faces the center of the zoom channel 2b and encloses a regular octagonal structure.
  • the two jaw unit blocks 1b are moved along the guiding groove and are gathered toward the center of the zooming channel 2b, and the zooming channel 2b is a regular octagon, and the eight side walls of the zooming channel 2b are respectively associated with the artificial valve replacement device located therein
  • the peripheral wall is pressed, and the peripheral wall of the artificial valve replacement device will be subjected to eight pressing forces respectively perpendicular to the upper eight sides of the regular octagon, and will be gathered toward the center under the action of eight pressing forces.
  • the clamping unit blocks are five, six or more, correspondingly, an angular groove is also provided on the side of each of the clamping unit blocks facing the zooming passage, if the clamping unit is to be The number of blocks is defined as N, and the degree of the angular groove is (180-180/N)°, then the zoom channel is a positive 2N polygon.
  • a guiding structure is arranged between any two clamping unit blocks, and each clamping unit block is guided by the guiding structure to gather toward the center of the zooming channel, thereby ensuring the pressing of each clamping unit block against the peripheral wall of the artificial valve replacement device, thereby realizing artificial valve replacement. The collection of the device.

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  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • External Artificial Organs (AREA)

Abstract

一种人造瓣膜置换装置的压缩装置，包括钳夹单元块（1）。所述钳夹单元块（1）的数量至少有两块。各钳夹单元块（1）依次相连并围成一个缩放通道（2）。压缩装置还设有引导各个钳夹单元块（1）向缩放通道（2）中心收拢的导向结构（3）。当人造瓣膜置换装置放置于缩放通道（2）内时，缩放通道（2）的内壁抵靠人造瓣膜置换装置的周壁。当通过外力使得各钳夹单元块（1）同时向缩放通道（2）中心收拢时，缩放通道（2）的内壁将同时给人造瓣膜置换装置的周壁施加指向缩放通道（2）中心方向的力。本装置制作成本低，由于结构的简单，因此方便清理，完全能满足使用时对手术卫生的要求，也使得生产和维护成本也随之降低，减少转嫁于消费者身上的费用。

Description

人造瓣膜置换装置的压缩装置 技术领域
本发明涉及一种压缩装置，尤其是一种人造瓣膜置换装置的压缩装置。
 背景技术
当病人自身的心脏瓣膜由于先天或后天疾病引起变异，造成瓣膜不能正常开闭时，会对健康生活乃至生命造成影响。心脏瓣膜的变异可分为开放不全和关闭不全，这两种情况都可以造成心脏负荷增大，心脏在此负荷下是否还能正常工作是决定人体心脏瓣膜是否应置换的主要依据。而当病人需要更换瓣膜时，现有方法是采用外科手术换瓣，医生要为病人开胸将心脏停跳，并接在体外心肺循环系统上。然后打开病人心脏将病变的心脏瓣膜切除，再将人工置换瓣缝置在原位上，最后将心脏和胸腔缝合。这是一个创伤非常大的手术过程，有一定死亡风险，病人康复时间长，很多病人由于手术创伤大而身体无法承受，尽管需要换瓣却不能进行手术。
为了降低手术的风险，美国专利US5370685，US5411552，US5718725和US6425916中公开了用于非开胸手术置换心脏瓣膜的方法及人造瓣膜置换装置，可以减小手术开胸换瓣造成的创伤和痛苦。人造瓣膜置换装置包括支撑瓣叶的镍钛记忆合金支架，经导管插入技术引入到身体脉管内腔。在进入人体之前，需要进行压缩，并装入输送鞘管内，以适应血管内径，避免划伤血管内壁。
中国专利授权公告号为CN101257863，授权公告日为2011年5月11日，专利名称为“修复性瓣膜卷曲装置”中公开了一种卷曲结构，是利用多个楔形块组合成一个外周封闭的正多边形柱状空间，通过每个楔形块同步向轴心平动，实现正多边形柱状空间压缩和扩张，其设计均需要在楔形块的外围增加保持楔形块平动的滑道和同步的驱动结构，再加上支座部分。该装置结构复杂，制造成本高，因其复杂的结构，清洁和灭菌的难度大，因此被要求为一次性使用，无疑给病人造成很大的负担；而且，该装置外廓尺寸较大，导致无法使用简易的冷却方式（如装有冰水混合物的平盘）对镍钛记忆合金支架进行马氏体相变处理，使支架在低温下变柔软后再压缩，如让支架在奥氏体相下被压缩，将产生数倍的径向支撑力，这会导致装载困难，并易造成鞘管损伤。
 技术问题
为了克服现有技术的不足，本发明提供了一种结构简单，操作方便，清理便捷，生产成本低的人造瓣膜置换装置的压缩装置。
 技术解决方案
本发明技术方案是：一种人造瓣膜置换装置的压缩装置，包括钳夹单元块，所述钳夹单元块钳夹单元块的数量至少有两块，各钳夹单元块依次相连并围成一个缩放通道；还设有引导各个钳夹单元块向缩放通道中心收拢的导向结构。
进一步设置为：所述钳夹单元块包括连接部，及固定在连接部两侧的排梳状的连接臂，各钳夹单元块之间通过相邻的连接臂滑动配合。
采用上述技术方案，钳夹单元块上连接臂为排梳状，也即连接臂由多个平行设置的单元片组成，两钳夹单元块上连接臂的排梳状结构相互交错穿插，该结构有助于冷却液的进出缩放通道，提高对缩放通道内的人造瓣膜置换装置的冷却效果。
进一步设置为：所述连接臂由若干片状梳齿组成，各梳齿沿缩放通道的轴向排列。
采用上述技术方案，排梳状结构由多块片状且相互平行设置的梳齿依次排列组成，其中各梳齿的排列方向沿缩放通道的轴向设置，那么，钳夹单元块上朝向缩放通道的一侧与各平行排列梳齿间的间隙相通，该间隙可以保证冷冻液自由进出缩放通道。当本发明对人造瓣膜置换装置进行卷曲操作的时候，需要将整个压缩装置没入带有冷却液的容器内，而冷冻液可以从该间隙内进入缩放通道，使得人造瓣膜置换装置能直接接触到冷冻液，从而使得人造瓣膜置换装置能在冷却液内得到充分降温并软化，降低各钳夹单元块对人造瓣膜置换装置进行卷曲收拢时的阻力。
进一步设置为：所述连接部，及固定在连接部两侧的排梳状的连接臂一体结构，钳夹单元块形状完全相同。
采用上述技术方案，由于连接部和连接臂间为一体结构，也即一个钳夹单元块可以直接通过模具铸造成型，又因为各个钳夹单元块的形状完全相同，那么钳夹单元块可以通过同一个模具铸造出来，这样，不仅可以节省了模具制造和维护的费用，而且还可以提高生产效率。
进一步设置为：所述滑动配合的连接臂之间设有位置相应的导向槽，导向槽内插设有防脱插件，所述导向槽以及内插的防脱插件构成所述的导向结构。
采用上述技术方案，导向槽的位置相互对应指的是两相邻钳夹单元块上相互滑动配合的连接臂处均开设有导向槽，且两个导向槽相互叠加或重合，然后在叠加或重合后的导向槽内插设一防脱插件。此处，防脱插件的作用不仅用于防止两相邻钳夹单元块相互脱离，而且还对两相邻钳夹单元块的运动起到导向限位作用。由于防脱插件的限位，当两连接臂相互远离时，则两连接臂上的导向槽也将交错远离，此时，由于防脱插件在中间起到连接和导向的作用，两连接臂虽然相互远离，但不会完全脱离，从而保证两相邻钳夹单元块间的相对运动且不分离。
进一步设置为：所述缩放通道的轴向截面为正多边形。
采用上述技术方案，由于当人造瓣膜置换装置放置于缩放通道内时，缩放通道内部的各个内壁分别与人造瓣膜置换装置的周壁进行抵靠，当通过外力使得钳夹单元块向缩放通道中心收拢时，缩放通道的内壁同时给人造瓣膜置换装置的周壁施加向缩放通道的中心方向的力。由于缩放通道的轴向截面为正多边形，所以使得人造瓣膜置换装置周壁受力时，各个力平均地分配于人造瓣膜置换装置的周向上，同时各个力的大小也相同，由此保证人造瓣膜置换装置向缩放通道中心收拢时，人造瓣膜置换装置的周壁将同时受力并向缩放通道中心收拢，而不会出现因周壁受力不均，而引起的人造瓣膜置换装置周壁向内侧凹陷的情况。其中，缩放通道所构成的正多边形为动态的正多边形，当各个钳夹单元块向中心收拢时，则该缩放通道也将向中心方向缩小，但是无论缩放通道怎么缩小，缩放通道始终处于一个动态变化的过程，而且始终保持为正多边形。
进一步设置为：所述钳夹单元块的数量为N块，则防脱插件中有N-1或N个为防转滑块。
采用上述技术方案，防脱插件可统一归纳为两种结构：柱状或者块状，柱状的防脱插件可以简称为防脱柱，防脱柱同样能实现两相邻钳夹单元块间的导向，但是却无法限制两钳夹单元块间的旋转自由度，所以由防脱柱限位的两钳夹单元块间会发生相对转动。块状的防脱插件称为防转滑块，当防转滑块插设于导向槽内时，由于防转滑块周壁与导向槽的内壁会发生相互抵触，所以防转滑块只能在导向槽内进行滑动，而无法进行转动，因此，由防转滑块限位的两钳夹单元块间的旋转自由度受到限制，也即两钳夹单元块无法发生相对转动。那么，由于受防转滑块的限制，则两相邻钳夹单元块间只能沿导向槽方向进行滑动，且滑动方向只有一个，从而对两钳夹单元块的运动方向进行限定。特别是，如果其中有两个防脱插件采用防脱柱，那么缩放通道将被这两防脱柱的连线划分成两活动单元，而这两活动单元上每一个防脱柱所在处具有在一个转动自由度和沿导向槽方向的一个平动自由度，故这两活动单元整体将受两个转动自由度的影响而发生相对转动，所以此时的压缩装置上缩放通道的收拢将具有其他轨迹。如果缩放通道收拢时的运动轨迹不是唯一的，那么势必会影响缩放通道收拢的精度和准确性，从而影响人造瓣膜置换装置收缩后的品质。故为了保证缩放通道收拢时的运动轨迹唯一，整个压缩装置上带有转动自由度的防脱插件不能多余一个，也即当钳夹单元块的数量为N个时，则防转滑块至少为N-1个。由前述可知，防脱柱可以在导向槽内转动，也即通过防脱柱限位的两钳夹单元块间可以发生相对转动，特别是外力对各钳夹单元块的施力不均时，易出现由防脱柱进行限位的钳夹单元块间位置发生相对转动，也即缩放通道的轴向截面在收拢过程中不能始终保持正多边形结构，由此造成位于缩放通道对人造瓣膜置换装置周壁施加的压缩力不均，最终将导致人造瓣膜置换装置周壁发生内陷，影响人造瓣膜置换装置压缩的质量。
进一步设置为：所述钳夹单元块的数量为三块， 所述防脱插件为两个或三个防转滑块，任意两个导向结构中的导向槽呈60°夹角设置。
采用上述技术方案，最优化的钳夹单元块数量为三个，且三个也是最少的钳夹单元块的数量，故在完成对人造瓣膜置换装置进行卷曲操作的同时，使得钳夹单元块的结构最简化，而且在一定程度上降低了生产成本和维护成本。同时，由于钳夹单元块数量少，所以对钳夹单元块进行清理的操作也更方便，相对来说，清洁的难度也降低，提高人造瓣膜置换装置进行卷曲操作时的卫生情况。其中，任意两个导向结构中的导向槽呈60°夹角设置，也即两导向槽的长度方向所成的夹角为60°，那么，当三个钳夹单元块在向缩放通道中心收拢时，单位时间内，各个钳夹单元块的运动位移均保持一致，也即缩放通道收拢时的速度相同，那么缩放通道的截面始终为一个动态变化的正多边形结构。
进一步设置为：所述同属一个钳夹单元块的两个连接臂朝向缩放通道的一侧构成120°的角形槽。
采用上述技术方案，当钳夹单元块数量为三个时，由于每个钳夹单元块上朝向缩放通道的一侧设有一个角形槽，那么三个钳夹单元块所围成的缩放通道应该为正六边形，而在正六边形中每个角的角度为120°，该120°角度即为角形槽的角度。同时，角形槽所开的槽为沿缩放通道轴向开设并贯穿钳夹单元块，在缩放通道径向所在平面上，该角形槽的角开口方向朝向缩放通道中心，且围成一个正六边形结构。而且，由于三个钳夹单元块的结构很简单，且体积较小，所以当对人造瓣膜置换装置进行卷曲操作时，整个压缩装置可以完全淹没于冷冻液中，所消耗的冷冻液量也不大，至于清理也更加简单方便。
再进一步设置为：所述钳夹单元块的数量为六块。
采用上述技术方案，随着钳夹单元块数量的增加，那么由各钳夹单元块围成的缩放通道内正多边形的边数也更多，当钳夹单元块的数量也可以为六块，则所围成的缩放通道为正十边形。人造瓣膜置换装置的卷曲是通过缩放通道的内壁来施力的，那么，此时施加于人造瓣膜置换装置周壁上的力将有十个沿缩放通道周向并指向缩放通道中心的力，力越多则人造瓣膜置换装置周向受力越均匀，那么人造瓣膜置换装置收缩时也越平稳，不容易出现人造瓣膜置换装置周壁发生凹陷的情况，同时也对卷曲过程中的人造瓣膜置换装置起到保护。
 有益效果
本发明的有益效果是：当人造瓣膜置换装置放置于缩放通道内时，缩放通道的内壁与人造瓣膜置换装置的周壁进行抵靠，当通过外力使得各钳夹单元块在导向结构的引导下向缩放通道中心收拢时，缩放通道的内壁将一起对人造瓣膜置换装置的周壁施加指向缩放通道中心方向的力。相对传统的压缩装置而言，本发明结构简单，使得整体制作成本也相应的降低，同时对本发明的操作也更加方便，只需驱动各钳夹单元块沿导向结构运动，使得各钳夹单元块向缩放通道中心收拢即可，而缩放通道的内壁将对人造瓣膜置换装置周壁提供一压缩的力。本发明不仅简单的结构，而且清理方便，有助于满足对卫生的要求，另外，就整体材料、生产和维护而言，本发明使得生产和维护成本也随之降低，从而减少了转嫁至消费者身上的费用。
 附图说明
图1为本发明实施例一的结构示意图。
图2为图1的爆炸图。
图3为本发明实施例一的俯视图。
图4为图3的主视图。
图5为本发明实施例一另一种视角的爆炸图。
图6为本发明实施例二的结构示意图。
图7为本发明实施例二的俯视图。
图8为图6的爆炸图。
图9为本发明实施例三收拢状态的俯视图。
图10为本发明实施例三展开状态的俯视图。
图11为本发明实施例三的爆炸图。
 本发明的实施方式
下面结合附图对本发明作进一步描述：
实施例一：如图1-5所示，本实施例包括三块钳夹单元块1，钳夹单元块1由连接部11，及固定于连接部11两侧的排梳状的连接臂12，连接臂12的排梳状结构上排梳沿缩放通道2的轴向排列。三块钳夹单元块1上通过连接臂12间依次相连形成封闭的环形结构，环形结构中心为缩放通道2，两相邻连接臂12间相互交错穿插并形成滑动配合。该连接臂12的排梳状结构为若干片状且平行设置的梳齿121，各梳齿121沿缩放通道2轴向排列，那么，也即钳夹单元块1上朝向缩放通道2的一侧为各平行排列的相邻梳齿121间的间隙，该间隙可以保证冷冻液的流通，当本发明对人造瓣膜置换装置进行卷曲操作的时候，冷冻液可以从该间隙内自由进入缩放通道2，使得人造瓣膜置换装置能直接接触到冷冻液，从而尽快使人造瓣膜置换装置降温，记忆合金支架软化后，便于各钳夹单元块1对人造瓣膜置换装置进行压缩。其中，连接部11和连接臂12间一体结构，而三个钳夹单元块1形状大小均相同，故可以通过模具统一制作而成。
为了实现对各钳夹单元块1的运动控制，则在两相邻连接臂12间设置导向结构3，整个压缩装置总共设有三个导向结构3，以便引导钳夹单元块1向缩放通道2中心收拢。每个导向结构3包括分别位于两相邻连接臂12上相互对应在同一直线位置的导向槽31，及插设于导向槽31内的防脱插件32，同一导向结构3中的两导向槽31分别位于两相邻的钳夹单元块1上，且该两导向槽31的长度方向相互平行，也即同一导向结构3所限制的两钳夹单元块1的运动是沿同一直线运动的。其中，三个导向结构3中的防脱插件32均为防转滑块，该防转滑块包括两平行分布的连接杆321，及分别位于连接杆321两端且用于固定两连接杆321的连接板322，该连接板322的宽度大于导向槽31槽口的宽度，由此可防止连接杆321沿自身轴向从导向槽31内脱出。两相互平行设置的连接杆321位于同一平面上，该结构整体可视为轴向截面为矩形结构的长条块，该结构在导向槽31内能限制两相邻连接臂12发生相对转动，同时在保证两连接臂12不会沿导向槽31方向而脱开。
当然，根据实施例一上各导向结构3的配合情况来说，三个防脱插件32中，可以两个为防转滑块，第三个为轴向截面为圆形结构的防脱柱，这样同样可以实现三个钳夹单元块1在各导向结构3下同步收拢或张开缩放通道2的目的，并且不会造成任意两相邻钳夹单元块1间发生相对转动。
为了保证位于缩放通道2内的人造瓣膜置换装置的周壁受力均匀，所以同属一个钳夹单元块1的两个连接臂12朝向缩放通道2的一侧开设有角度为120°的角形槽13。该角形槽13上角顶点所在边沿缩放通道2轴向设置且贯穿钳夹单元块1，在缩放通道2径向所在平面上，该角形槽13的角开口方向朝向缩放通道2中心。由于各钳夹单元块1上朝向缩放通道2的角形槽13均为120°，由此使得缩放通道2的截面为一个正六边形，从而保证人造瓣膜置换装置的周壁受力均匀。因为三个钳夹单元块1的结构很简单，且体积较小，所以当对人造瓣膜置换装置进行卷曲操作时，整个压缩装置可以完全淹没于冷冻液中，所消耗的冷冻液量也不大，使用后清理也很简单方便，并可多次重复使用。
为了保证缩放通道2收拢时的速度均衡，则任意两个导向结构3中的导向槽31呈60°夹角设置，该夹角是指任意两个导向结构3中导向槽31长度方向所成的夹角。当三个钳夹单元块1在向缩放通道2中心收拢时，单位时间内，各个钳夹单元块1向中心收拢的运动位移均保持一致，也即缩放通道2收拢时的速度相同。当各个钳夹单元块1向中心收拢时，则该缩放通道2也将向中心方向缩小，但是无论缩放通道2怎么缩小，缩放通道2始终处于一个动态变化的过程，而且始终保持为正六边形。由于缩放通道2的轴向截面为正六边形，那么人造瓣膜置换装置周壁受力时，所施加的各个压力平均地分配于人造瓣膜置换装置的周向上，并保证各个压力的大小也相同，由此使得实现人造瓣膜置换装置的周壁一起向缩放通道2中心收拢，保证收拢时的一致性，避免出现因受力不均，大小不一致而引起的人造瓣膜置换装置周壁向内侧凹陷的情况。
本发明中，当人造瓣膜置换装置放置于缩放通道2内时，缩放通道2的内壁与人造瓣膜置换装置的周壁进行抵靠，当通过外力使得各钳夹单元块1同时向缩放通道2中心收拢时，缩放通道2的内壁将同时给人造瓣膜置换装置的周壁施加指向缩放通道2中心方向的力。相对传统的压缩装置而言，本发明结构简单，使得整体制作成本也相应的降低，同时对本发明的操作也更加方便，只需驱动各钳夹单元块1沿导向结构运动，各钳夹单元块1就会自动向缩放通道2中心收拢，而缩放通道2的内壁将对人造瓣膜置换装置周壁提供一指向缩放通道2中心的压力，使得人造瓣膜置换装置受压并向中心收拢。本发明不仅简单的结构，而且清理方便，有助于满足卫生的要求，使得生产和维护成本也随之降低，减少转嫁至消费者身上的费用。由于三个钳夹单元块1的结构很简单，且体积较小，所以当对人造瓣膜置换装置进行卷曲操作时，整个压缩装置可以完全淹没于冷冻液中，所消耗的冷冻液量也不大，至于清理也更加简单方便。另外，由于体积小，完全可以用手从钳夹单元块1的外侧向缩放通道2中心轻松压握即可，然后通过手将三个钳夹单元块1向外分开即可，不仅操作方便轻松，而且占用空间小，方便在手术室内进行操作。
实施例二：如图6-8所示，本实施例包括两块钳夹单元块1a，钳夹单元块1a由连接部11a，及固定于连接部11a两侧的排梳状的连接臂12a，连接臂12a的排梳状结构上排梳沿缩放通道2a的轴向排列。两块钳夹单元块1a上通过连接臂12a间依次相连形成封闭的环形结构，环形结构中心为缩放通道2a，两相邻连接臂12a间相互交错穿插并形成滑动配合。
为了实现对钳夹单元块1a的运动控制，两相邻连接臂间设有导向结构3a，该引导结构3a引导钳夹单元块1a向缩放通道2a中心收拢。总共有两个导向结构3a，每个导向结构3a包括分别位于两相邻连接臂12a上对应位置的导向槽31a；及插设于导向槽31a内的防脱插件32a，相邻连接臂12a上对应位置的导向槽31a相互垂直布置。其中，两个防脱插件32a均为块状结构的防转滑块，该防转滑块的轴向截面为正方形结构，防转滑块的两端设有放置防转滑块沿自身轴向脱出导向槽31a的限位板。由于防转滑块的设置，不仅限制了两相邻连接臂12a沿导向槽31a运动，同时还能避免两连接臂12a发生相对转动。
当然，根据实施例二上各导向结构3a的配合下，两个防脱插件32a中，其中一个为防转滑块，另一个为轴向截面为圆形结构的防脱柱，这样同样可以实现两个钳夹单元块1a在各导向结构3a下同步收拢或张开缩放通道2。
为了保证位于缩放通道2a内的人造瓣膜置换装置的周壁受力均匀，所以同属一个钳夹单元块1a的两个连接臂12a朝向缩放通道2a的一侧开设90°的角形槽13a，该角形槽13a上角的开口方向朝向缩放通道2a中心，并使得缩放通道2a围成一个正四边形结构。在外力作用下，驱动两钳夹单元块1a沿导向结构3a向缩放通道2a中心收拢时，该缩放通道2a的四个侧壁分别与位于其中的人造瓣膜置换装置的周壁相抵压，那么人造瓣膜置换装置的周壁将受到四个分别与缩放通道2a周壁相互垂直的抵压力，并在四个抵压力的作用下向缩放通道2a中心收拢，从而实现人造瓣膜置换装置的压缩收拢。
实施例三：如图9-11所示，本实施例包括四块钳夹单元块1b，钳夹单元块1b由连接部11b，及固定于连接部11b两侧的排梳状的连接臂12b，连接臂12b的排梳状结构上排梳沿缩放通道2b的轴向排列。四块钳夹单元块1b上通过连接臂12b间依次相连形成封闭的环形结构，环形结构中心为缩放通道2b，两相邻连接臂12b间相互交错穿插并形成滑动配合。
为了实现对钳夹单元块1b的运动控制，两相邻连接臂间设有导向结构3b，该引导结构3b能耐引导钳夹单元块1b向缩放通道2b中心收拢。总共有四个导向结构3b，每个导向结构3b包括分别位于两相邻连接臂12b上对应位置的导向槽31b，及插设于导向槽31b内的防脱插件32b，该防转插件32b均为块状结构的防转滑块，该防转滑块的轴向截面为正方形结构，防转滑块的两端设有放置防转滑块沿自身轴向脱出导向槽31b的限位板。同一导向结构3b上的两个导向槽31b位于同一直线上，当防脱插件32b插设于对应的两导向槽31b内时，防转插件32b将引导两相邻钳夹单元块1b沿导向槽31b所在直线方向运动。四个导向结构3b上导向槽31b所在直线共同围成一个矩形，且该矩形环绕缩放通道2b周向设置，当四块钳夹单元块1b四条导向槽31b所在直线运动时，缩放通道2b将实现向中心收拢的运动。
为了保证位于缩放通道2b内的人造瓣膜置换装置的周壁受力均匀，所以同属一个钳夹单元块1b的两个连接臂12b朝向缩放通道2b的一侧构成135°的角形槽13b，该角形槽13b的角开口方向朝向缩放通道2b中心，且围成一个正八边形结构。在外力作用下，使两钳夹单元块1b沿导向槽运动并向缩放通道2b中心收拢，缩放通道2b为正八边形，该缩放通道2b的八个侧壁分别与位于其中的人造瓣膜置换装置的周壁相抵压，那么人造瓣膜置换装置的周壁将受到八个分别垂直于正八边形上八边的抵压力，并在八个抵压力的作用下向中心收拢。
本发明中，如果钳夹单元块的数量为五个、六个或更多个，则相应的，在各个钳夹单元块朝向缩放通道的一侧也设有一个角形槽，如果将钳夹单元块的数量定义为N个，那么角形槽的度数为（180-180/N）°，那么该缩放通道为正2N边形。任意两钳夹单元块间设有导向结构，通过导向结构的引导各钳夹单元块向缩放通道中心收拢，从而保证各钳夹单元块对人造瓣膜置换装置周壁的抵压，进而实现人造瓣膜置换装置的收拢。

Claims (10)

  1. 一种人造瓣膜置换装置的压缩装置，包括钳夹单元块，其特征是：所述钳夹单元块钳夹单元块的数量至少有两块，各钳夹单元块依次相连并围成一个缩放通道；还设有引导各个钳夹单元块向缩放通道中心收拢的导向结构。
  2. 根据权利要求1所述的人造瓣膜置换装置的压缩装置，其特征是：所述钳夹单元块包括连接部，及固定在连接部两侧的排梳状的连接臂，各钳夹单元块之间通过相邻的连接臂滑动配合。
  3. 根据权利要求2所述的人造瓣膜置换装置的压缩装置，其特征是：所述连接臂由若干片状梳齿组成，各梳齿沿缩放通道的轴向排列。
  4. 根据权利要求3所述的人造瓣膜置换装置的压缩装置，其特征是：所述连接部，及固定在连接部两侧的排梳状的连接臂一体结构，钳夹单元块形状完全相同。
  5. 根据权利要求1或2或3或4所述的人造瓣膜置换装置的压缩装置，其特征是：所述滑动配合的连接臂之间设有位置相应的导向槽，导向槽内插设有防脱插件，所述导向槽以及内插的防脱插件构成所述的导向结构。
  6. 根据权利要求5所述的人造瓣膜置换装置的压缩装置，其特征是：所述缩放通道的轴向截面为正多边形。
  7. 根据权利要求5所述的人造瓣膜置换装置的压缩装置，其特征是：所述钳夹单元块的数量为N块，所述防脱插件有N-1或N个为防转滑块。
  8. 根据权利要求7所述的人造瓣膜置换装置的压缩装置，其特征是：所述钳夹单元块的数量为三块，所述防脱插件为两个或三个防转滑块，任意两个导向结构中的导向槽呈60°夹角设置。
  9. 根据权利要求7所述的人造瓣膜置换装置的压缩装置，其特征是：所述钳夹单元块的数量为六块，同属一个钳夹单元块的两个连接臂朝向缩放通道的一侧构成120°的角形槽。
  10. 根据权利要求1所述的人造瓣膜置换装置的压缩装置，其特征是：各钳夹单元块通过排梳状结构交错穿插依次相连并围成一个缩放通道。
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JP5956076B2 (ja) 2016-07-20
CN102805676B (zh) 2015-06-17
RU2614497C2 (ru) 2017-03-28
EP2886082B1 (en) 2018-02-21
US20150190228A1 (en) 2015-07-09
EP2886082A1 (en) 2015-06-24
JP2015524718A (ja) 2015-08-27
RU2015104885A (ru) 2016-09-10

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