WO2019034081A1 - 人工腱索植入系统及其夹持辅助装置 - Google Patents

人工腱索植入系统及其夹持辅助装置 Download PDF

Info

Publication number
WO2019034081A1
WO2019034081A1 PCT/CN2018/100654 CN2018100654W WO2019034081A1 WO 2019034081 A1 WO2019034081 A1 WO 2019034081A1 CN 2018100654 W CN2018100654 W CN 2018100654W WO 2019034081 A1 WO2019034081 A1 WO 2019034081A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
auxiliary arm
aid
artificial
chord
Prior art date
Application number
PCT/CN2018/100654
Other languages
English (en)
French (fr)
Inventor
张庭超
张伟伟
周春远
Original Assignee
杭州德晋医疗科技有限公司
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 杭州德晋医疗科技有限公司 filed Critical 杭州德晋医疗科技有限公司
Priority to US16/639,209 priority Critical patent/US11819409B2/en
Priority to EP18845642.0A priority patent/EP3669826A4/en
Publication of WO2019034081A1 publication Critical patent/WO2019034081A1/zh

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/24Heart 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
    • A61F2/2442Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
    • A61F2/2454Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses
    • A61F2/2457Chordae tendineae prostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/24Heart 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
    • A61F2/2442Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
    • A61F2/2466Delivery devices therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0469Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238Type of minimally invasive operation
    • A61B2017/00243Type of minimally invasive operation cardiac
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0406Pledgets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0409Instruments for applying suture anchors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0469Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
    • A61B2017/0472Multiple-needled, e.g. double-needled, instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B2017/0495Reinforcements for suture lines
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06004Means for attaching suture to needle
    • A61B2017/06042Means for attaching suture to needle located close to needle tip
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004Rounded shapes, e.g. with rounded corners

Definitions

  • the invention belongs to the technical field of medical instruments, and relates to a device for repairing defects of a heart valve, in particular to an artificial chordae implantation system and a clamping auxiliary device thereof.
  • the mitral valve is a one-way "valve" between the left atrium (abbreviation: LA) and the left ventricle (abbreviation: LV), which ensures blood flow from the left atrium to the left ventricle.
  • LA left atrium
  • LV left ventricle
  • a normal healthy mitral valve has multiple chordae.
  • the leaflets of the mitral valve are divided into the anterior and posterior lobe.
  • the two When the left ventricle is in the diastolic state, the two are in an open state, and the blood flows from the left atrium to the left ventricle; when the left ventricle is in the contracted state, the tendon is stretched to ensure The leaflets are not rushed to the atrial side by the blood flow, and the anterior and posterior leaves are well closed, thereby ensuring blood flow from the left ventricle through the aortic valve (abbreviation: AV) to the aorta.
  • AV aortic valve
  • chordae rupture As shown in Figure 2, when the left ventricle is in a contracted state, the mitral valve cannot return to a closed state as in the normal state, and the impulse of blood flow will further cause the valve. Leaves detached into the left atrium, causing blood to flow back.
  • chordae tendines can not be repaired by themselves. Even if a few chordae ruptures, the tension of other chordae tends to increase and new chordae rupture occurs.
  • the mitral chordae tendine rupture is characterized by acute severe gasping, dyspnea and other left heart failure, pulmonary edema, and part of progressive chronic heart failure.
  • surgically implanted artificial chordae is usually used to treat chordae lesions. Invasive thoracotomy is required, and general anesthesia and moderate hypothermic cardiopulmonary bypass are used as auxiliary support.
  • Such surgical procedures have the defects of complicated surgical procedure, high surgical cost, high degree of patient trauma, high risk of complications, long hospital stay, and painful recovery process.
  • a device for implanting a artificial chord in a minimally invasive manner which grips the leaflets by a capture assembly.
  • the leaflets are always in a pulsating state, and the surface of the leaflets is smooth. Even if the clamping device has captured the leaflets, the leaflets may fall off the clamping device, resulting in prolonged operation or even surgical failure.
  • the clamping position is found to be unreasonable, the surgeon needs to fine-tune the clamping device, and the leaflets are easily slipped off the clamping device, resulting in prolonged operation time or even surgical failure.
  • the technical problem to be solved by the present invention is to provide an artificial mulberry implant system and a clamping assisting device which are stable in clamping and prevent the leaflets from slipping out of the clamping device, in view of the above-mentioned drawbacks in the prior art.
  • An artificial chordae implantation system includes a clamping device, a puncturing device and a pushing device.
  • the push device includes a pusher catheter, the piercing device and the gripping device being movably worn in the pusher catheter, respectively.
  • a manual chord is accommodated in the clamping device.
  • the implant system also includes at least one grip aid.
  • the clamping aid includes a clamping auxiliary arm movably mounted in the push conduit and a clamping aid disposed at a distal end of the clamping auxiliary arm.
  • the clamping aid is made of a resilient and/or flexible material and is deformable, the clamping aid being co-received in the push conduit with the clamping aid arm.
  • the gripping auxiliary arm pushes the gripping aid out of the distal end of the pusher catheter, and the gripping aid cooperates with the gripping means to grip the leaflets.
  • a clamping aid is mounted to an artificial chord implant system.
  • the clamping aid includes a clamping auxiliary arm and a clamping aid disposed at one end of the clamping auxiliary arm, the clamping aid being made of an elastic and/or flexible material and deformable to support the flap leaf.
  • the artificial chordae implantation system of the present invention has at least the following beneficial effects:
  • the artificial chordae implantation system of the present invention is provided with a clamping aid, wherein the clamping auxiliary arm of the clamping aid is movably worn in the pushing catheter, and the clamping aid is far from the distal end of the pushing catheter or the clamping device.
  • the end extension after the leaflet is clamped by the distal jaw and the proximal collet, the distal end of the clamping aid can be supported on the lower surface of the leaflet, lifting the leaflet to the atrial side, and then reducing The small leaflet activity amplitude assists the clamping device to stabilize the beating leaflets.
  • the clamping device can be finely adjusted, and during the fine adjustment, the supporting action of the clamping auxiliary device prevents the leaflet self-clamping device Slip off.
  • Figure 1 is a schematic view of a normal chordae in the heart
  • Figure 2 is a schematic view of the chordae rupture in the heart
  • FIG. 3 is a schematic structural view of a first embodiment of an artificial chord of an artificial chordae implantation system according to an embodiment of the present invention
  • FIG. 4 is a schematic structural view of a second embodiment of an artificial chord of a artificial chordae implantation system according to an embodiment of the present invention
  • FIG. 5 is a schematic structural view of a third embodiment of an artificial chord of an artificial chordae implantation system according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a fourth embodiment of an artificial chord of an artificial chordae implantation system according to an embodiment of the present invention.
  • FIG. 7 to FIG. 10 are schematic structural views of different embodiments of the connection between the fixing member and the puncture needle of the artificial chordae implantation system according to the embodiment of the present invention.
  • FIG. 11 is a schematic structural view of an artificial chordae implantation system according to an embodiment of the present invention.
  • Figure 12 is an exploded view of the artificial chordae implantation system of the embodiment of the present invention.
  • Figure 13 is a schematic view showing the structure of the clamping device of the artificial chordae implantation system of the embodiment of the present invention when the distal collet is separated from the proximal collet;
  • FIG. 14 is a schematic structural view of a clamping surface of a distal collet of a clamping device of an artificial mulberry implant system according to an embodiment of the present invention
  • Figure 15 is a cross-sectional view taken along line B-B of Figure 14;
  • FIG. 16 is a schematic structural view of a first embodiment of a clamping assisting device for an artificial chordae implantation system according to an embodiment of the present invention
  • FIG. 17 is a schematic structural view of a second embodiment of a clamping assist device for an artificial chordae implantation system according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural view of a first embodiment of a push catheter of a push device of a artificial chordae implantation system according to an embodiment of the present invention
  • Figure 19 is a partial enlarged view of M in Figure 18;
  • FIG. 20 is a schematic structural view of a distal end of an artificial chordae implantation system according to an embodiment of the present invention.
  • 21 is a schematic structural view of a second embodiment of a push catheter of an artificial chordae implantation system according to an embodiment of the present invention.
  • Figure 22 is a radial cross-sectional view of the push catheter of the push device of the artificial chordae implantation system of the embodiment of the present invention.
  • FIG. 23 is a schematic structural view of a third embodiment of a clamping assist device for an artificial chordae implantation system according to an embodiment of the present invention.
  • FIG. 24 is a schematic structural view of a fourth embodiment of a clamping assist device for an artificial chordae implantation system according to an embodiment of the present invention.
  • 25 to 31 are schematic views showing a process of implanting a artificial chord with an artificial chordae implantation system according to an embodiment of the present invention
  • FIG. 32 and FIG. 33 are schematic diagrams showing the structures of the fifth and sixth embodiments of the clamping aid device of the artificial mulberry implant system according to the embodiment of the present invention.
  • 34 to 37 are structural diagrams of the seventh to tenth embodiments of the clamping assisting device of the artificial chordae implantation system according to the embodiment of the present invention.
  • FIG. 38 is a schematic structural view of an eleventh embodiment of a clamping assisting device for an artificial chordae implantation system according to an embodiment of the present invention.
  • FIG. 39a and FIG. 39b are schematic diagrams showing the clamping assist device of the eleventh embodiment of the clamping assist device of the artificial chordae implantation system according to the embodiment of the present invention.
  • 40a to 40c are schematic views showing the structure of a twelfth embodiment of the holding assisting device of the artificial chordae implantation system according to the embodiment of the present invention.
  • the orientation near the operator is generally defined as the proximal end, and the orientation away from the operator is defined as the distal end.
  • an artificial chordae implantation system is used to implant an artificial chordae into a patient to replace a lesion or a broken chordae in the patient's heart.
  • the artificial chordae implantation system includes a manual chord 100, a clamping device 300, a puncturing device 400, and a pushing device 200.
  • the push device 200 includes a push conduit 210.
  • the lancing device 400 and the clamping device 300 are movably worn in the push catheter 210, respectively.
  • a manual sling 100 is housed in the clamping device 300.
  • the lancing device 400 includes two puncture needles 410 and two puncture push rods 420 connected to the proximal ends of the two puncture needles 410, as shown in FIG.
  • the artificial chord implant system also includes at least one grip assist device 500.
  • the clamping aid 500 includes a clamping aid arm 520 that is movably threaded into the pusher catheter 210 and a clamping aid 510 that is disposed at a distal end of the clamping aid arm 520.
  • the clamping aid 510 is adapted to cooperate with the clamping device 300 to hold the leaflets, and the clamping auxiliary arm 520 is used to support and push the clamping aid 510.
  • the clamping aid 510 is made of a resilient and/or flexible material, and the clamping aid 510 is housed in the push conduit 210 together with the clamping aid arm 520.
  • the clamping assist arm 520 pushes the clamping aid 510 out of the distal end of the push catheter 210 or the distal end of the clamping device 300, and the clamping aid 510 cooperates with the clamping device 300 to clamp the leaflets.
  • the artificial chord 100 includes a length of chord body 110 that is flexible.
  • the chord body 110 has opposing first and second ends.
  • a fixing member 120 is coupled to the first end and/or the second end.
  • a side of the fastener 120 facing away from the chord body 110 is provided with a piercing connector 125 for non-detachable or detachable connection with the lancet 410.
  • One end of the chord body 110 is fixed on the leaflet, and the other end can be fixed on the ventricular wall or the mastoid muscle to replace the diseased chordae, maintaining the tension between the leaflet and the ventricular wall.
  • the flexibility of the chord body 110 means that it can be arbitrarily bent without stretching in the axial direction, and generally the chord body 110 is in the form of a flexible wire.
  • the material of the chord body 110 may be a polymer material compatible with the human body or a relatively soft metal material. It is preferably a polymer material.
  • the first end and the second end of the chord body 110 have no difference in direction, importance, and the like.
  • the fixing member 120 may be disposed at one end of the chord body 110; as shown in FIG. 4, a fixing member 120 may be disposed at both ends of the chord body 110.
  • the number of artificial chords 100 may be one or two or more. In this embodiment, the number of the artificial chords 100 is preferably one, and the first end and the second end of the chord body 110 are each provided with a fixing member 120.
  • the fixing body is fixedly connected to the fixing member 120, and the fixing connection may be performed by various fixing methods such as knotting, winding, welding, bonding, and snapping, which are not limited in the present invention.
  • one end of the chord body 110 may be knotted out of the fixture 120 to form a larger diameter coil, or the end may be welded to a larger diameter ball, or a positioning rod may be disposed at the end.
  • the fixing member 120 when the fixing member 120 is disposed at the first end of the chord body 110, since the second end of the chord body 110 is not provided with the fixing member 120, the second end should be knotted, entangled, or set.
  • the ball end, the disc end, and the like are such that the diameter of the second end is larger than the diameter of the chord body 110 to secure the second end of the chord body 110 to the upper surface of the leaflet.
  • the fixture 120 is used to form a detachable or non-detachable connection with the puncture needle 410, the shape of which corresponds to a different connection.
  • the fixture 120 is provided with a puncture connector 125 for connection to the puncture needle 410. Since the distal end of the puncture needle 410 is generally sharply tapered, there should be as large a contact area as possible between the fastener 120 and the outer surface of the puncture needle 410 to form a stable connection. Therefore, one side of the fixing member 120 facing away from the chord body 110 is provided with a accommodating cavity 121 for accommodating the puncture needle, and the puncture connector 125 is disposed in the accommodating cavity 121.
  • the shape of the accommodating cavity 121 corresponds to the shape of the distal end of the puncture needle 410.
  • the shape of the accommodating cavity 121 is generally tapered or cylindrical.
  • the fixing member 120 is generally cylindrical, and the cross-sectional shape may be various shapes such as a circle, an ellipse, a polygon, and the like, and a circular shape and an elliptical shape are generally preferable.
  • the puncture needle 410 is provided with a chord connector 411 that is fixedly coupled to the puncture connector 125 of the artificial chord 100. The cooperation of the chord connector 411 with the puncturing connector 125 increases the reliability of the connection between the puncturing needle 410 and the artificial chord 100.
  • the puncture connector 125 is an internal thread formed on the side wall of the accommodating cavity 121 .
  • the chord connector 411 is provided with an external thread on the outer surface of the puncturing needle 410; after the puncturing is completed, the puncturing needle 410 is screwed with the fixing member 120 of the artificial chord 100 to form a detachable connection.
  • the puncture connector 125 is an adhesive layer provided on the side wall of the accommodating cavity 121.
  • the chord connector 411 is an adhesive layer provided on the outer surface of the puncture needle 410. Specifically, an adhesive is applied to the outer surface of the puncture needle 410 and the inner wall of the accommodating cavity 121 in whole or in part to form an adhesive layer. After the puncture is completed, the adhesive layer of the puncture connector 125 of the fixing member 120 is bonded and fixed. Form a non-detachable whole.
  • the puncture connector 125 is a rough surface provided on the side wall of the accommodating cavity 121.
  • the chord connector 411 is a rough surface provided on the outer surface of the puncture needle 410.
  • the puncture connector 125 is at least one groove or hole formed in the side wall of the receiving cavity 121.
  • the chord connector 411 is at least one convex tooth or at least one rim formed at the distal end of the puncture needle 410 and forming an interference fit, snap connection or key connection with the puncture connector 125 of the fixture 120.
  • the hole or the groove may be a blind hole or a through hole as long as it has a shape substantially corresponding to a projection or a flange provided on the puncture needle to form a snap connection.
  • three grooves are preferably provided to improve the connection stability between the fixing member 120 and the puncture needle 410, and to reduce the amplitude of the puncture needle 410 shaking after the connection.
  • the key connection can select a key connection manner such as a flat key connection, a spline connection, and the like, and form a tight key connection, so that the tensile force can also be transmitted in the axial direction, and the key connection structure is a conventional technique, and details are not described herein again.
  • the anti-slip members in order to increase the contact area between the artificial chord 100 and the leaflets to effectively reduce the risk of the artificial chord 100 tearing the leaflets, it is preferable to provide the anti-slip members on the chord body 110. 130, and the anti-slip member 130 is axially slidable along the chord body 110.
  • the puncture needle 410 penetrates the leaflet and is connected to the fixing member 120 of the artificial chord 100
  • the anti-slip member 130 is previously disposed on the artificial chord 100, and the anti-slip member 130 can be pushed to the puncture point, and the anti-slip member 130 and the artificial The chordae 100 are fixed together on the leaflets.
  • the specific arrangement of the anti-slip member 130 on the artificial chord 100 is that a through hole 131 is provided in the anti-slip member 130, and the chord body 110 is passed through the through hole 131.
  • the number of the through holes 131 is related to the fixed form of the slip preventing member 130.
  • One way is to provide a cleat 130 for each of the chord bodies 110.
  • the anti-slip member 130 is provided with a through hole 131 through which the chord body 110 passes (as shown in FIGS. 5 and 6).
  • Another way is to provide two anti-slip members 130 for each of the chord bodies 110.
  • at least two through holes 131 are provided in the anti-slip member 130, and the first end and the second end of the chord body 110 respectively pass through different through holes 131 (as shown in FIG. 4).
  • chord bodies 110 share a slip resistant member 130.
  • at least two through holes 131 are provided in the anti-slip member 130, and at least two of the chord bodies 110 each pass through a different through hole 131.
  • the cross-sectional dimension of the through hole 131 in the slip preventing member 130 is smaller than the sectional size of the fixing member 120.
  • the free end of the chord main body 110 where the fixing member 120 is not disposed should be knotted, or provided with a spherical end, a disc-shaped end or the like, such that the diameter of the free end is larger than the diameter of the through hole 131 on the anti-skid member 130 (see FIG. 6). Shown).
  • the anti-slip member 130 in order to disperse the force of the chordae body 110 on the leaflets as far as possible to the contact surface between the anti-slip member 130 and the leaflets, the anti-slip member 130 needs to be attached to the leaflets as much as possible, so that the anti-slip members are 130 is provided with a fitting surface 132 that is attached to the leaflet.
  • the specific structure of the anti-slip member 130 is not limited, and may have various structures: for example, it may be a sheet having a certain area, a disk shape or a spherical shape, or even an irregular shape, preferably a sheet shape.
  • the structure of the anti-slip member 130 may be a non-porous structure, a mesh structure, a bar-like structure, or the like.
  • the non-slip member 130 should be made of a biocompatible material, which may be made of an elastic material or a non-elastic material.
  • the anti-slip member 130 is selected from at least one of an elastic spacer, a heart patch, a felt sheet, a mesh structure, a disc-like structure, or a double disc-like structure.
  • the structure of the anti-slip member 130 having a disc-like structure or a double disc-like structure is similar to the occluder in the prior art, and will not be described herein.
  • the anti-slip member 130 having a disc-like structure or a double disc-like structure should be made of a shape memory material.
  • the pusher catheter 210 is a tubular body having a certain axial length or a rod-shaped body having a lumen.
  • the pusher catheter 210 has a plurality of axial lumens that are spaced apart from one another.
  • the pusher catheter 210 can be an integrally formed multi-lumen tube, or the outer tube and the inner tube set can be secured together to form a unitary push channel 210.
  • the pusher catheter 210 can be made of a biocompatible polymer material (for example, polyoxymethylene POM, polyethylene PE, nylon PA, polyvinyl chloride PVC, acrylonitrile-butadiene-styrene copolymer ABS, nylon elastomer Pebax or Polyurethane PU) or a metal material (for example, stainless steel or nickel titanium alloy).
  • a biocompatible polymer material for example, polyoxymethylene POM, polyethylene PE, nylon PA, polyvinyl chloride PVC, acrylonitrile-butadiene-styrene copolymer ABS, nylon elastomer Pebax or Polyurethane PU
  • a metal material for example, stainless steel or nickel titanium alloy
  • a puncture device 400 is inserted into a lumen of the push catheter 210.
  • the function of the puncture needle 410 is to puncture the leaflets and connect with the fixation member 120 of the artificial chordae 100 to pull the chordae body 110 toward the proximal end.
  • the distal end of the puncture needle 410 be a tapered straight tip. Compared with the hook-shaped needle in the prior art, the straight tip has a small puncture point formed on the leaflet and is easy to heal after surgery.
  • the diameter of the puncture point formed on the leaflet of the artificial tendon implantation system of the present embodiment is usually 0.3 mm to 1.5 mm. Further, the diameter range of the puncture point can be controlled by the shape and diameter of the suitable puncture needle 410. At around 0.7mm.
  • the proximal end of the puncture push rod 420 is provided with a third handle 401, and the puncture push rod 420 is movably worn in the inner cavity of the push catheter 210.
  • the proximal end of the third handle 401 is passed out from the proximal end of the pusher catheter 210.
  • the puncturing push rod 420 can be moved along the axial direction of the pusher catheter 210, thereby driving the puncture needle.
  • 410 punctures distally or withdraws proximally. After the leaflets are clamped, the puncture needle 410 is driven by the third handle 401 to pierce the valve leaflets. After being connected to the fixing member 120 of the artificial chordus 100, the puncture needle 410 and the artificial chordae 100 are connected by the fixing member 120. A whole.
  • the clamping device 300 includes a clamping pusher 330, a distal collet 310, and a proximal collet 320.
  • the clamping pusher 330 is threaded into a lumen of the pusher catheter 210.
  • a proximal collet 320 is disposed at the distal end of the push catheter 210.
  • the distal collet 310 is disposed at a distal end of the clamp pusher 330.
  • the distal end of the proximal collet 320 is provided with a clamping surface 321 .
  • the proximal end of the distal collet 310 is provided with a clamping surface 311.
  • the proximal end of the clamp pusher 330 is passed out of the proximal end of the pusher catheter 210 and a second handle 301 is provided. As shown in FIG. 13, thereby, the second handle 301 is pushed distally, and the clamping push rod 330 is moved to the distal end, so that the distal collet 310 is away from the proximal collet 320, and the clamping device 300 is in an open state. At this time, the distal end of the artificial chordae implantation system can be finely adjusted, so that the leaflet enters the space formed between the distal collet 310 and the proximal collet 320 to accommodate the leaflets, and then the second handle is retraced toward the proximal end.
  • the clamping push rod 330 is moved to the proximal end, so that the distal collet 310 approaches the proximal collet 320, and the clamping device 300 is in the clamping state, as shown in FIG. At this time, the leaflets are clamped and fixed by the gripping device 300.
  • the shape of the proximal collet 320 and the distal collet 310 should conform to the shape of the push catheter 210 to form a smooth, sleek unit that facilitates pushing and reducing damage to the patient's wound.
  • the state in which the second handle 301 is pushed distally such that the distal collet 310 is away from the proximal collet 320 can also be achieved by retracting the first handle 201 and the push catheter 210 proximally.
  • both clamping faces 311, 321 are disposed obliquely, that is, the clamping faces 311, 321 are axially at an angle of less than 90° with the pusher catheter 210.
  • at least one of the clamping faces 311, 321 is provided with a clamping reinforcement 312 for enhancing the clamping force.
  • the clamping reinforcement is at least one of a projection, a rib, a groove, and a recess provided on the clamping surface.
  • the clamping surface 311 of the distal collet 310 is provided with a rib as a clamping reinforcement 312, and the respective ribs are parallel.
  • the clamping surface 11 is stepped.
  • a manual cable passage 331 is disposed in the axial direction of the clamp pusher 330, and a manual cable receiving cavity 315 is disposed in the distal clamp 310.
  • the artificial chord receiving cavity 315 is in communication with the artificial chord passage 331.
  • the chord body 110 of the artificial chord 100 is housed in the artificial chord passage 331 and the artificial chord receiving cavity 315.
  • the receiving surface 311 of the distal chuck 310 is provided with a receiving groove 314 for receiving the anti-slip member 130.
  • the receiving groove 314 is in radial communication with the artificial cable receiving cavity 315.
  • the clamping surface 311 of the distal collet 310 is also provided with a fixing cavity 313 for receiving the fixing member 120 of the artificial chord 100.
  • the fixed cavity 313 is in axial communication with the artificial chord receiving cavity 315.
  • the fixed cavity 313 is in radial communication with the receiving groove 314.
  • the fixed cavity 313 is in axial communication with the artificial chord receiving cavity 315.
  • the fixing cavity 313 functions to fix the fixing member 120 of the artificial chord 100 in the fixing cavity 313, and can be smoothly pulled out from the fixing cavity 313 after the fixing member 120 is pulled by the external force. Therefore, the shape of the fixed cavity 313 is matched with the shape of the fixing member 120, and the diameter of the inscribed circle of the fixed cavity 313 is larger than the diameter of the circumcircle of the artificial cable receiving cavity 315.
  • the ratio of the diameter of the circumcircle of the artificial chord receiving cavity 315 to the diameter of the inscribed circle of the fixed cavity 313 is (0.2 to 0.4):1.
  • the diameter of the inscribed circle of the fixed cavity 313 is the diameter of the circular cross section of the fixed cavity 313, and the external connection of the artificial cable receiving cavity 315
  • the diameter of the circle is the diameter of the circular cross section of the artificial chord receiving cavity 315.
  • the fixed cavity 313 has a circular cross section and a diameter D1.
  • the artificial chord receiving cavity 315 has a circular cross section with a diameter D2 and D2 is 30% of D1.
  • the purpose of the setting is that if the D2 is too large, the puncture needle 410 is engaged with the fixing member 120 of the artificial chord 100 under the pushing of the puncturing push rod 420, the fixing member 120 may be due to the distal thrust of the puncturing push rod 420.
  • the puncturing needle 410 and the fixing member 120 of the artificial chord 100 can not be successfully connected at one time, prolonging the operation time; if the D2 is too small, the artificial sling 100
  • the chord body 110 cannot pass smoothly through the artificial chord receiving cavity 315, and after the puncture needle 410 is connected with the fixing member 120 of the artificial chord 100, the artificial chord 100 cannot be smoothly pulled out of the clamping surface of the clamping pusher 330. 311.
  • the fixed cavity 313 and the receiving groove 314 are in radial communication.
  • the width D3 of the communicating portion between the fixed cavity 313 and the receiving groove 314 is 20%-50% of D1
  • the purpose of the setting is that if the D3 is too large, the fixing member 120 of the artificial chord 100 will not be firmly Fixed in the fixed cavity 313 of the distal collet 310, which easily slips out of the fixed cavity 313, directly causing the artificial chord implant system to fail; if the D3 is too small, the fixing member 120 of the puncture needle 410 and the artificial chord 100 After the connection, the fixing member 120 cannot be smoothly pulled out from the fixed cavity 313, resulting in a surgical failure.
  • the cross section of the fixed cavity 313 and the artificial cable receiving cavity 315 may also be elliptical, triangular, quadrangular, polygonal, or the like, as long as the shape of the fixed cavity 313 and the fixing member 120 are The shapes cooperate with each other, and the shape of the artificial chord receiving cavity 315 does not affect the sling body 110 passing therethrough smoothly.
  • the prior art exposes the artificial chord to the outside of the device, so that the outer surface of the device is not smooth, which causes the frictional damage to the tissue when the device enters the human body, and the problem of blood leakage at the same time increases the risk of postoperative complications.
  • the fixed cavity 313 of the distal collet 310 is convenient for placing and fixing the artificial chordae 100 inside the artificial chordae implantation system, thereby avoiding frictional damage to the tissue during the process of entering the human body by the artificial chord.
  • the fixing cavity 313 of the distal collet 310 can fix the fixing member 120 and the anti-slip member 130 of the artificial chord 100, and can be removed without loosening the distal collet 310 and the proximal collet 320.
  • the chord body 110 and the anti-slip member 130 are pulled to the leaflets, so that when the clamping device 300 is changed from the closed state to the open state, the leaflets are detached from the clamping device 300, and the moment of the pulsation is resumed, the chord body 110 is not It will be in contact with the leaflets alone to avoid the linear cutting effect of the chordae body 110 from damaging the lobed leaflets.
  • the artificial chord implanted by means of a U-shaped loop sleeve combined with a hook-shaped needle causes wrinkles of the leaflet rim, so that the valvular edge of the leaflet is formed into an artificial gap, and the opposite edge cannot be formed, which is easy to cause two.
  • the cusp regurgitation is not satisfactory.
  • the chordae body 110 is received in the clamping pusher 330, the distance from the fixed cavity 313 of the distal collet 320 to the edge of the distal collet 320 is the artificial after implantation.
  • the distance between the chordae 110 and the edge of the leaflet is such that the distance between each artificial chordae 110 and the edge of the leaflet is substantially the same, which can effectively prevent the edge of the leaflet from being folded and improve the surgical effect.
  • a fourth handle 501 may be disposed at the proximal end of the clamp auxiliary arm 520 for convenient push.
  • an auxiliary arm housing chamber 250 is provided in the pushing duct 210 in the axial direction for accommodating the holding assisting member 510 and the holding assisting arm 520.
  • the side wall of the push duct 210 is provided with an opening 260 which penetrates the auxiliary arm housing chamber 250.
  • the clamp assist arm 520 can be driven to push the clamp aid 510 out of the opening 260.
  • the opening 260 may also be disposed on the clamping surface 321 of the proximal collet 320 or the side wall of the proximal collet 320 and penetrates the auxiliary arm receiving cavity 250.
  • the clamping pusher 330 is inserted into the inner cavity 280 of the push catheter 210.
  • the two puncture pushers 420 are inserted into the two lumens 270 of the push catheter 210, and the clamping push rod 330 and the puncture push rod are clamped.
  • the axes of 420 are all parallel to the axis of the pusher catheter 210.
  • the clamp push rod 330 is disposed on one side of the push duct 210, and the piercing push rod 420 is disposed on the other side of the push duct 210.
  • the overall outer diameter of the pusher catheter 210 should be minimized. Therefore, it is preferable that the auxiliary arm receiving cavity 250 is disposed in the receiving cavity 280 of the clamping pusher 330 and the receiving cavity of the puncture pusher 420. Between 270.
  • the clamping pusher 330 when the puncture is performed, the clamping pusher 330 is in contact with the edge of the leaflet, and the distal collet 310 and the proximal collet 320 can only clamp part of the leaflet, in order to make as much as possible
  • the pulsating leaflets remain stable for puncture, and the support force is also required to be provided away from the edge of the leaflet. Therefore, it is necessary to have a certain angle between the clamping aid 510 and the pushing catheter 210, so that the clamping aid 510 can be supported at Keep away from the lower surface at the edge of the leaf.
  • the auxiliary arm receiving cavity 250 is disposed axially along the pushing duct 210, may be parallel to the central axis of the pushing duct 210, or may not be parallel, and specifically corresponds to the structure of the clamping assisting device 500.
  • the auxiliary arm receiving cavity 250 is axially disposed along the pushing duct 210, and the auxiliary arm receiving cavity 250 is a substantially straight cavity, and the entire auxiliary arm is accommodated.
  • the cavity 250 is obliquely disposed in the pusher catheter 210, and the angle ⁇ between the axis of the distal end of the auxiliary arm receiving cavity 250 and the axis of the pusher catheter 210 ranges from 120 to 150°.
  • the auxiliary arm receiving cavity 250 includes a distal cavity 251 and a proximal cavity 252 that is generally parallel to the axis of the push catheter 210, far
  • the angle ⁇ between the end cavity 251 and the proximal cavity 252 ranges from 120 to 150°.
  • the smooth transition between the distal cavity 251 and the proximal cavity 252 does not affect the smooth passage of the clamping auxiliary arm 520 in the auxiliary arm receiving cavity 250.
  • the shape of the auxiliary arm receiving cavity 250 corresponds to the shape of the clamping auxiliary arm 520, and the cross section may be any suitable shape such as a circular or elliptical shape, a crescent shape, a semicircular shape, a polygonal shape, or the like, preferably an angular or elliptical shape.
  • the angle ⁇ between the axis of the gripping aid 510 of the gripping aid 500 and the axis of the gripping auxiliary arm 520 ranges from 120 to 150°.
  • the clamping aid 510 is used to assist the clamping device 300 in clamping the leaflets.
  • the clamping aid 510 is made of an elastic and/or flexible material to accommodate the anatomy of the leaflets and the amplitude of movement of the leaflets, and can effectively avoid damage to the leaflets.
  • a metal material, a polymer material or a metal-polymer composite material can be selected.
  • the elastic material is preferably a shape memory material.
  • the grip assisting device 500 is substantially L-shaped and formed of at least one support rod.
  • the holding aid 510 is substantially L-shaped and is formed by one support rod.
  • the holding aid 510 is substantially L-shaped and is formed by two juxtaposed support rods.
  • the support rod may be a solid or hollow structure of a single layer or a multi-layer composite structure, or may be wound from a single wire or a plurality of wires.
  • the cross section of the support rod may be a regular circular or elliptical shape, a crescent shape, a semicircular shape, a polygonal shape, or the like, and is preferably a circular shape.
  • the clamping aid 510 is preferably made of an elastic material with a shape memory function, such as a shape memory metal material.
  • the clamping aid 510 is smooth, for example by laser spot welding to form a smooth round head without burrs, edges, corners and the like.
  • the cross-sectional dimension of the gripping aid 510 is preferably greater than the cross-sectional dimension of the gripping auxiliary arm 520 to provide a relatively stable support for the leaflets.
  • the support rod of the clamping auxiliary arm 520 is a support rod having an axial length, and may be made of a single or multi-layer composite structure of a hollow or solid structure of metal or polymer material, or may be a single wire or a plurality of wires. Wrapped.
  • the clamping auxiliary arm 520 in FIG. 16 is a support rod, and the clamping auxiliary arm 520 in FIG. 17 is two parallel supporting rods.
  • the cross section of the clamping auxiliary arm 520 may be a regular circular or elliptical shape, a crescent shape, a semicircular shape, a polygonal shape or a ring shape, and is preferably a circular shape.
  • the clamping auxiliary arm 520 is preferably made of a material having a memory function and may be made of a metal material, a polymer material or a metal-polymer composite material.
  • the clamping assist arm 520 is preferably selected to have a certain stiffness or stiffness to provide support and pushability.
  • the clamp auxiliary arm 520 is preloaded in the auxiliary arm housing cavity 250 of the push catheter 210. As shown in FIG.
  • the clamping aid 510 is attached to the lower surface of the leaflet, and the elastic or flexible clamping aid 510 can be well
  • the ground conforms to the range of motion of the leaflets and does not cause perforation or stab wounds due to too hard.
  • the clamping auxiliary arm 520 has a higher hardness, which is more favorable for the transmission of the pushing force, so that the entire clamping auxiliary arm 520 can be moved to the distal end or the proximal end with respect to the pushing catheter 210 by moving the fourth handle 501.
  • the clamping aid 510 and the clamping assist arm 520 may be of unitary construction, or the clamping aid 510 may be non-detachably or detachably coupled to the clamping auxiliary arm 520.
  • the unitary structure is integrally formed.
  • the unitary structure may be made of a single or multi-layer composite structure, a hollow or solid metal rod or a polymer rod having a certain axial length, or may be a single piece. Wire or multiple wires are wound.
  • the non-detachable connection is that the clamping auxiliary arm 520 and the clamping aid 510 are separately processed separately and then fixedly connected by welding, bonding or the like.
  • the detachable connection is that the clamping auxiliary arm 520 and the clamping auxiliary member 510 are separately processed separately, and are fixedly connected by a socket, a screw connection, an interference fit, and the like.
  • the above connection method is a conventional technology, and details are not described herein again.
  • the support of the gripping auxiliary arm 520 and the softness of the gripping aid 510 can be achieved by separately forming the gripping aid 510 and the gripping auxiliary arm 520 using different materials. That is, the gripping auxiliary arm 520 is a rigid rod-shaped or tubular structure; the gripping aid 510 may be made of an elastic, flexible material, or a combination of both.
  • the holding assisting device 500 is also substantially L-shaped, and the holding assisting arm 520 includes an elastic or flexible auxiliary arm main body 521 and is disposed on the auxiliary arm main body 521. Internal or external hard support 522.
  • a rigid support body 522 is used to support the auxiliary arm body 521.
  • the support body 522 may be nested or juxtaposed with the auxiliary arm main body 521, that is, a whole rod or tube body is first made of a softer material as the clamping aid 510 and the auxiliary arm main body 521, and then in the inner cavity of the auxiliary arm main body 521.
  • the inner tube having a higher hardness is disposed, or an outer tube having a higher hardness is disposed on the outer surface of the auxiliary arm main body 521 or the outer tube having a higher hardness is provided as the support body 522 to improve the support of the proximal end portion of the clamping auxiliary arm 520;
  • a heat shrinkable tube is used as the support body 522 to wrap around the outer surface of the softer auxiliary arm main body 521, and then heated to shrink the heat shrinkable tube and wrap around the outer surface of the auxiliary arm main body 521 to improve the supportability.
  • thermoplastic elastomer such as Pebax may be first wrapped on a part of the outer surface of the auxiliary arm main body 521, and then heated to make the thermoplastic elastomer. After being melted, it is wrapped on the outer surface while penetrating into the gap between the plurality of wires or the individual wires (that is, the support body 522 is provided outside and inside the auxiliary arm main body 521) to improve the supportability of the auxiliary arm main body 521.
  • the angle ⁇ between the axis of the clamping aid 510 and the axis of the clamping auxiliary arm 520 ranges from 120 to 150°.
  • the angle ⁇ between the gripping aid 510 and the gripping auxiliary arm 520 is 120°.
  • the angle ⁇ between the plurality of rod-shaped holding assisting members 510 and the holding assisting arms 520 is 140°.
  • the clamping aid 510 is axially received from the clamping auxiliary arm 520 to the auxiliary arm.
  • the angle between the axis of the clamping aid 510 and the axis of the clamping auxiliary arm 520 is 120-150 due to the angle between the distal cavity 251 of the auxiliary arm receiving cavity 250 and the proximal cavity 252. The angle of °.
  • the fourth embodiment of the holding assisting device 500 in order to increase the supporting force of the gripping aid 510 to the leaflets, it is preferable to provide a support between the gripping aid 510 and the gripping auxiliary arm 520.
  • the auxiliary member 510 is clamped and supports the carrier 530 of the leaflets.
  • the receiving member 530 is received in the distal cavity 251 of the auxiliary arm receiving cavity 250.
  • the hardness of the receiving member 530 is greater than the hardness of the clamping aid 510 and less than the hardness of the clamping auxiliary arm 520.
  • the receiving member 530 is located on the lower surface of the leaflets and holds the leaflets, since the clamping aid 510 has elasticity
  • the support member 530 can also move up and down with the pulsation of the leaflets, and because the hardness of the support member 530 is higher, the leaflets can be more effectively supported.
  • the auxiliary arm receiving cavity 250 is a straight cavity that is obliquely disposed in the push conduit 210; or as shown in FIG.
  • the auxiliary arm receiving cavity 250 includes a distal cavity 251 and a proximal cavity 252, the proximal cavity 252 being substantially parallel to the axis of the push catheter 210, forming between the distal cavity 251 and the proximal cavity 252.
  • the angle ⁇ ranges from 120 to 150°, and the receiving member 530 is received in the distal cavity 251.
  • the pushing duct 210 includes two tubes having a substantially semi-circular cross section opposite to each other, and the production
  • the clamping auxiliary arm 520, the receiving member 530 and the clamping aid 510 are first placed together in the auxiliary arm receiving cavity 250 of one of the tubular bodies, and then the other half of the tubular body is docked with the tubular body and fixed at the same. together.
  • the clamping aid 510 is made of a biocompatible radiopaque X-ray material, such as stainless steel, nickel titanium alloy, etc., in this embodiment, a nickel titanium alloy is used.
  • a biocompatible radiopaque X-ray material such as stainless steel, nickel titanium alloy, etc.
  • a nickel titanium alloy is used.
  • the clamping aid 510 is made of a non-transmissive X-ray material, after the clamping aid 510 is in contact with the leaflets, the flexible or resilient clamping aid 510 can be correspondingly oscillated with the amplitude of the movement of the leaflets, thus being clamped Before the device holds the leaflets, the operator can quickly and accurately determine the position of the leaflets by X-rays, thereby operating the clamping device more quickly and accurately to clamp the leaflets, shortening the operation time and improving the success rate of the operation.
  • First step Referring to Figure 25, the artificial chordae implantation system is advanced into the left ventricle, and the artificial chordae implantation system is continued; until the distal collet 310 and the proximal collet 320 of the clamping device 300 are located on the left In the atrium
  • Second step Referring to Figure 26, the push catheter 210 is withdrawn proximally or the clamp pusher 330 is pushed distally such that the proximal collet 320 at the distal end of the push catheter 210 is located at the distal end of the clamp push rod 330
  • the distal collet 310 is separated, and a leaflet receiving space is formed between the proximal collet 320 and the distal collet 310;
  • the third step Referring to FIG. 27, the fourth handle 501 is pushed distally, and the fourth handle 501 drives the clamping auxiliary arm 520 to push the clamping aid 510 out of the opening 260. At this time, the clamping aid 510 is supported on the flap.
  • the lower surface of the leaf is used to assist the stable beating leaflets, keeping the relative position between the first handle 201, the second handle 301 and the fourth handle 501 unchanged, and slowly moving the entire artificial tendon implantation system to the proximal end until the leaflets Entering the leaflet receiving space formed between the proximal collet 320 and the distal collet 310, and the clamping aid 510 can provide a certain supporting force to the leaflets;
  • Step 4 Referring to Figures 28a and 28b, the distal end of the artificial chord implant system is slightly moved until the edge of the leaflet contacts the clamp push rod 330, at which time the second handle 301 is withdrawn proximally to drive the distal end.
  • the collet 310 moves toward the proximal collet 320 until both are closed and the leaflets are clamped;
  • Step 5 Pushing the third handle 401 distally to drive the puncture needle 410 to move distally along the axial direction of the push catheter 210, that is, the puncture needle 410 moves toward the distal collet 310 until the puncture needle 410 passes through the flap. a leaf and a fixed connection with the fixing member 120 of the artificial chord 100;
  • Step 6 Referring to FIG. 29, the third handle 401 is retracted, so that the puncture needle 410 drives the fixing member 120 of the artificial chord 100, and the chord body 110 connected to the fixing member 120 sequentially passes through the leaflets, and the anti-slip member 130 is also The clamping surface 311 of the distal end collet 310 is pulled out, and the abutting surface (ie, the lower surface) of the anti-slip member 130 is in contact with the upper surface of the leaflet, while a part of the chord body 110 is pressed against the upper surface of the anti-slip member 130.
  • the leaflet is attached to the leaflet (as shown in FIG. 30). At this time, the point contact between the artificial tendon 100 and the leaflet is improved to the surface contact between the slip preventing member 130 and the leaflet, which can effectively reduce the leaflet tearing. Risk of cracking;
  • Step 7 Continue to withdraw the third handle 401 until the fixing member 120 is withdrawn from the proximal end of the pushing catheter 210, and then the fourth handle 501 is retracted, and the clamping aid 510 is driven back to the auxiliary arm receiving cavity 250, and is withdrawn.
  • the entire artificial chord implant system is removed, and the length of the chord body 110 remaining in the heart is adjusted, and both ends of the chord body 110 are fixed to the ventricular wall (as shown in FIG. 31).
  • the relative positions of the distal collet 310 and the proximal collet 320 can be finely adjusted to cause a certain distance therebetween. Then, the leaflets are clamped again; during the fine adjustment, since the clamping aid 500 under the leaflets has a certain supporting effect on the leaflets, the leaflets can be prevented from slipping out of the clamping device 300.
  • the artificial chordae implantation system of the present invention has at least the following beneficial effects:
  • a gripping aid located at the distal end of the gripping arm can be supported on the lower surface of the leaflets to assist in gripping the beating leaflets.
  • the clamping aid located below the leaflets has a supporting effect on the leaflets, which can effectively prevent the leaflets from slipping off the clamping device.
  • the clamping aid 500 can be further modified.
  • the fifth and sixth embodiments of the holding assisting device 500 are substantially the same as the first to fourth embodiments of the holding assisting device 500, except that the holding aid is 510 is a deformed structure formed by a plurality of support rods.
  • the deformed structure is a Y-shaped structure or an umbrella-shaped structure. After the deformation structure is contracted and deformed, it is housed in the push duct 210 together with the clamp auxiliary arm 520.
  • the deformed structure is an open Y-shaped structure or an umbrella-shaped structure formed by a plurality of support bars for facilitating pushing in the push conduit, and the clamp assisting member 510 has a stretched state in a compressed state and a natural state.
  • the clamping aid 510 can be pushed in the auxiliary arm receiving cavity 250 of the push catheter 210 when in the compressed state; when the clamping aid 510 is provided by the clamping face of the proximal collet 320, the side wall of the push catheter 210 Or, after extending in the opening 260 of the side wall of the proximal collet 320, it is transformed into an extended state, which can be supported on the lower surface of the leaflet to stabilize the leaflet for facilitating puncture.
  • the grip assisting device 500 is a Y-shaped structure formed by two support rods.
  • the distal end of each support rod is a smooth structure, such as the structure of a round head, without defects such as burrs, edges, corners, etc., the angle between the two support rods
  • the range is 20°-150°, preferably 60°-90°, to provide stable support to the leaflets and does not affect the proximal recovery of the gripping aid 510 into the pusher catheter 210.
  • the clamping aid 510 can be closed and received into the lumen of the push catheter 210, and when pushed out of the push catheter 210, the two support rods will recover due to their own flexibility and/or elasticity. Support the leaflets to a Y shape with a certain angle.
  • At least two openings 260 are provided in the clamping surface 321 of the proximal collet 320, the side wall of the pushing duct 210 or the side wall of the proximal collet 320, and each opening 260 is continuous with the auxiliary arm receiving cavity 250.
  • a clamping aid 510 is threaded out of the at least one opening 260.
  • the clamping aid 510 is first retracted into the proximal collet 320 or the push catheter 210, and the clamping auxiliary arm 520 is received into the auxiliary arm receiving cavity 250 of the push catheter 210, and the proximal end of the self-pushing catheter 210 Wear it at the proximal end.
  • the clamping aid 510 can be smoothly pushed out of the opening 260, and after being pushed out, due to its own flexibility and/or Or the elasticity may be converted to an extended state in a natural state (ie, restored to a Y shape), the clamping aid 510 is in contact with the lower surface of the leaflet to provide a supporting force to the leaflet; along the axial end of the push catheter 210
  • the clamp auxiliary arm 520 is pulled, the clamp assisting member 510 is closed, and the entire clamp assisting member 510 is smoothly pulled back into the auxiliary arm receiving chamber 250 of the push duct 210.
  • the clamping auxiliary arm 520 and the clamping aid 510 may be an integrally formed unitary structure, and the clamping auxiliary arm 520 and the clamping aid 510 may be separately formed and then joined together.
  • the auxiliary holding member 510 of the holding assisting device 500 is an umbrella-shaped structure formed by a plurality of supporting rods. Only one auxiliary arm receiving cavity 250 may be disposed in the push conduit 210, and at least two clamping assisting devices 500 are simultaneously inserted into the auxiliary arm receiving cavity 250, that is, a plurality of independent clamping assistants 510 and clips connected thereto are disposed. The auxiliary arm 520 is held. A plurality of clamping aids 510 are passed through the same opening 260.
  • a plurality of support rods constituting the clamping aid 510 have a certain angle between them, and an umbrella structure is formed, and the mushroom structure is supported on the leaflets.
  • the lower surface provides more effective support for the leaflets.
  • the plurality of support rods constituting the clamping auxiliary arm 520 can be fixed together by a limiting member such as a hoop or an outer sleeve; the plurality of supporting rods can also be fixed to each other without being restricted by the limiting member, only by The wall surface of the auxiliary arm receiving cavity 250 limits the radial offset between the plurality of clamping auxiliary arms 520.
  • each support rod can be individually controlled to adjust the relative position between each support rod and the leaflets, thereby adapting the leaflet structure of different shapes to achieve better support effect.
  • the plurality of support bars that make up the clamp aid 510 can also be threaded through the different openings 260, respectively.
  • the end of the Y-shaped structure or the umbrella-shaped clamping aid device 500 can be rolled in the proximal direction of the clamping auxiliary arm 520, and the clamping aid 510 faces the clamping auxiliary arm 520.
  • One side forms a recessed area as shown in FIG.
  • the ends of the gripping aid 510 are both turned inwardly and directed toward the proximal end of the gripping auxiliary arm 520, the end of the gripping aid 510 can be prevented from stabbing the leaflet or the ventricular wall.
  • the fifth and sixth embodiments of the clamping aid 500 have at least the following beneficial effects compared to the prior art:
  • the clamping aid has a Y shape or an umbrella shape, and the contact surface of the clamping aid and the leaflet is a plane formed by the clamping aid, so that the contact area between the clamping aid and the leaflet is larger, and the support The force is stronger; and the leaflets can be better fitted to support the leaflets more effectively.
  • the grip assisting device 500 can be further improved.
  • the seventh to ninth embodiments of the holding assisting device 500 are substantially the same as the first to fourth embodiments of the holding assisting device 500, except that the clamping is performed.
  • the clamping aid 510 at the distal end of the clamping auxiliary arm 520 of the seventh to ninth embodiments of the auxiliary device 500 is a deformed structure formed by a plurality of supporting rods, and the deformed structure is contracted and deformed together with the clamping auxiliary arm 520. It is housed in the pusher catheter 210.
  • the deformed structure in this embodiment is a closed loop structure, and the closed loop structure may be a circle, a diamond, an ellipse, a pear, a polygon, or other irregular shape, but may form a closed structure.
  • the proximal ends of the two supporting rods are preferably arranged in a crosswise manner, that is, the proximal end of the clamping aid 510 is a twist-type structure, thereby being Increasing the area of the force receiving point between the clamping aid 510 and the clamping auxiliary arm 520, preventing the beating of the leaflets from causing deformation of the joint between the clamping aid 510 and the clamping auxiliary arm 520, further improving the clamping aid 510 Support for the leaflets.
  • At least one connecting rod 511 having flexibility and/or elasticity may be disposed between the support rods of the closed-loop structure to improve the closed-loop structure itself.
  • the stability further enhances the supporting force of the clamping aid 510 on the leaflets.
  • the clamping aid 510 includes two support rods and a connecting rod 511 connected between the two support rods.
  • Each of the support rods corresponds to an opening 260 having a length equal to or slightly larger than the length of the opening 260.
  • the closed loop structure may also form a sheet structure or a mesh structure.
  • the mesh structure may be heat set to form a network structure to form a stretchable deformable disk structure (similar to a single disk occluder in the prior art).
  • the disc-shaped structure can be further heat-set to form a columnar, nested, oblate, or the like structure.
  • the clamping aid 510 is made of a shape memory material, it can be transported through the auxiliary arm receiving cavity 250 in the push catheter 210, and extended through the opening 260 to return to the natural unfolded state, in contact with the lower surface of the leaflet and the flap.
  • the leaves provide support.
  • the clamping aid 510 located at the distal end of the clamping auxiliary arm 520 is Pushing out, the gripping aid 510 is restored to the extended state, and the gripping aid 510 forms an angle with the push duct 210 ranging from 120° to 150° (as shown in Fig. 39a).
  • the clamping aid 510 is in contact with the lower surface of the leaflet 600 (as shown in Fig. 39b), and the contact surface has a large area, so that the auxiliary device of the embodiment can provide a more stable supporting force.
  • a twelfth embodiment of the holding assisting device 500 is distinguished from the tenth embodiment of the holding assisting device 500 in that the gripping auxiliary arm 520 is movably worn in the auxiliary In the arm housing chamber 250, the distal end of the clamping auxiliary arm 520 is provided with a clamping aid 510.
  • the clamping aid 510 includes two support bars 510a, 510b and a connecting rod 510c connected between the two support bars 510a, 510b.
  • At least two through holes are provided as opening 260 on the clamping surface 321 of the proximal collet 320, the push duct 210 or the side wall of the proximal collet 320, and each of the plurality of openings 260 is associated with the auxiliary arm receiving cavity 250.
  • two openings 260 may be provided at the same time on the side wall of the pusher catheter 210, or two openings 260 may be provided simultaneously on the clamping faces of the proximal collet 320, or two at the side walls of the proximal collet 320. Opening 260.
  • Each of the support bars 510a, 510b that make up the clamp aid 510 corresponds to an opening 260 having a length equal to or slightly greater than the length of the opening 260. That is, the distal ends of the support rods 510a, 510b are respectively passed through one of the openings 260 and connected to each other by the connecting rod 510c.
  • the two support rods 510a, 510b and the connecting rod 510c are previously heat-set to form a circular, rhombic, pear-shaped, polygonal or other substantially closed closed loop structure.
  • the clamping auxiliary arm 520 is worn in the auxiliary arm receiving cavity 250, the supporting rods 510a, 510b are worn in the auxiliary arm receiving cavity 250 at the opening 260, and the connecting rod 510c is attached to the pushing catheter 210 or the proximal clamp
  • the outer surface of the head 320 It can be understood that in other embodiments, the outer surface of the proximal collet 320 can also be provided with a recess for receiving the connecting rod.
  • the clamping auxiliary arm 520 is moved axially distally, so that the support rods 510a, 510b gradually self-push the catheter 210 or the proximal collet 320.
  • the opening 260 is fully extended until the support rods 510a, 510b and the connecting rod 510c are restored to the natural state after the heat setting treatment, that is, the closed state of the entire holding assisting member 510 when it is in the extended state.
  • the support rods 510a, 510b and the connecting rod 510c form a plane which, after coming into contact with the lower surface of the leaflet, lifts the leaflets to provide a supporting force.
  • the length of the transition sections 520a, 520b, the transition sections 520a, 520b is greater than or equal to the length of the support rods 510a, 510b, whereby the transition sections 520a, 520b enter the opening after pushing the fourth handle 501 of the proximal end of the clamp auxiliary arm 520 In 260, the support rods 510a, 510b are completely ejected, and the support rods 510a, 510b and the connecting rod 510c are restored to the natural state after heat setting.
  • two clamping auxiliary arms 520 can also be used, and a supporting rod is disposed at the distal end of each clamping auxiliary arm 520, and the two supporting rods 510a, 510b are connected through each other.
  • the rods 510c are connected, whereby after the second handles 501 of the two clamping auxiliary arms 520 are pushed, the two clamping auxiliary arms 520 respectively completely eject the two supporting rods 510a, 510b, and the supporting rods 510a, 510b And the connecting rod 510c resumes the natural state after heat setting.
  • the twelfth embodiment of the clamping aid 500 has at least the following beneficial effects compared to the prior art:
  • the contact area between the clamping aid and the leaflet is larger, and when the clamping aid is subjected to the force of the leaflet, the single force point between the support rod and the clamping auxiliary arm is converted into two support rods and The force-receiving surface between the two openings, after the force is dispersed, can provide greater support force, can better conform to the range of motion of the leaflets, and hold up the leaflets.
  • the artificial chordae implantation system of the present invention increases the clamping aid device in the artificial chordae implantation system, wherein the clamping auxiliary arm of the clamping auxiliary device is movably worn in the pushing catheter, and the clamping aid The piece protrudes from the distal end of the push catheter or the distal end of the clamping device.
  • the clamping aid can be supported on the lower surface of the leaflet, and the leaflet is oriented The atrial side is lifted up to reduce the amplitude of the leaflet movement and assist the clamping device to stabilize the beating leaflets.
  • the clamping device can be finely adjusted, and during the fine adjustment, the supporting action of the clamping auxiliary device prevents the leaflet from being clipped. Slip off in the holding device.

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Rheumatology (AREA)
  • Prostheses (AREA)

Abstract

一种人工腱索植入系统,包括夹持装置(300)、穿刺装置(400)、推送装置(200)及夹持辅助装置(500)。推送装置(200)包括推送导管(210),穿刺装置(400)和夹持装置(300)分别活动地穿装在推送导管中(210)。夹持装置(300)中容置有人工腱索(100)。夹持辅助装置(500)包括活动地穿装于推送导管(210)中的夹持辅助臂(520)及设于夹持辅助臂远端的夹持辅助件(510)。夹持辅助件(510)由弹性和/或柔性材料制成,夹持辅助件(510)与夹持辅助臂(520)共同收容于推送导管(210)中。夹持辅助臂(520)推动夹持辅助件(510)从推送导管(210)远端或夹持装置(300)远端穿出,夹持辅助件(510)与夹持装置(300)配合夹持瓣叶。该人工腱索植入系统中,夹持辅助件(510)可支撑在瓣叶的下表面,协助夹持装置(300)稳定搏动的瓣叶,提高夹持稳定性、防止瓣叶自夹持装置中滑脱。

Description

人工腱索植入系统及其夹持辅助装置 技术领域
本发明属于医疗器械技术领域,涉及一种修复心脏瓣膜缺陷的器械,尤其涉及人工腱索植入系统及其夹持辅助装置。
背景技术
二尖瓣为左心房(简称:LA)和左心室(简称:LV)之间的单向“阀门”,可以保证血液从左心房流向左心室。请参见图1,正常健康的二尖瓣具有多根腱索。二尖瓣的瓣叶分为前叶和后叶,左心室处于舒张状态时,两者处于张开状态,血液从左心房流向左心室;左心室处于收缩状态时,腱索被拉伸,保证瓣叶不会被血流冲到心房侧,前、后叶闭合良好,从而保证血液从左心室经过主动脉瓣(简称:AV)流向主动脉。若腱索或乳头肌出现病变,例如图2所示的后叶腱索断裂,当左心室处于收缩状态时,二尖瓣不能像正常状态时恢复至关闭状态,血流的冲力会进一步导致瓣叶脱入左心房,造成血液返流。
腱索出现病变或者腱索断裂后均不能自行修复,即使少数腱索断裂,也可使其它腱索张力增高而发生新的腱索断裂。二尖瓣腱索断裂典型表现为急性重症喘气、呼吸困难等左心衰竭、肺水肿表现,部分呈渐进性慢性心力衰竭。目前通常采用外科手术植入人工腱索的方式治疗腱索病变,需要采用侵入性开胸技术,并实行全麻、中度低温体外循环作为辅助支持。这类外科手术存在手术过程复杂、手术成本高、病人创伤程度高、并发症风险高、住院时间长以及患者恢复过程痛苦等缺陷。
现有一种通过微创方式植入人工腱索的器械,该器械通过俘获组件来夹持瓣叶,在俘获瓣叶的过程中,由于瓣叶始终处于搏动状态,且瓣叶的表面为光滑组织,即使夹持装置已经俘获瓣叶,瓣叶也可能自夹持装置中脱落,导致手术时间延长甚至手术失败。并且,在瓣叶被俘获后,如果发现夹持位置不合理,术者需要微调夹持装置,此时瓣叶极易从夹持装置中滑脱,导致手术时间延长甚至手术失败。
发明内容
本发明要解决的技术问题在于,针对现有技术中的上述缺陷,提供一种夹持稳定、防止瓣叶自夹持装置中滑脱的的人工腱索植入系统及其夹持辅助装置。
本发明解决其技术问题所采用的技术方案是:
一种人工腱索植入系统,包括夹持装置、穿刺装置和推送装置。所述推送装置包括推送导管,所述穿刺装置和所述夹持装置分别活动地穿装在所述推送导管中。所述夹持装置中容置有人工腱索。所述植入系统还包括至少一个夹持辅助装置。所述夹持辅助装置包括活动地穿装于所述推送导管中的夹持辅助臂及设于所述夹持辅助臂的远端的夹持辅助件。所述夹持辅助件由弹性和/或柔性材料制成且能够变形,所述夹持辅助件与所述夹持辅助臂共同收容于所述推送导管中。所述夹持辅助臂推动所述夹持辅助件从所述推送导管的远端 穿出,所述夹持辅助件与所述夹持装置配合夹持瓣叶。
一种夹持辅助装置,安装于人工腱索植入系统。所述夹持辅助装置包括一夹持辅助臂及设于所述夹持辅助臂的一端的夹持辅助件,所述夹持辅助件由弹性和/或柔性材料制成且能够变形以支撑瓣叶。
本发明的人工腱索植入系统与现有技术相比,至少具有以下有益效果:
本发明的人工腱索植入系统中设有夹持辅助装置,其中夹持辅助装置的夹持辅助臂活动地穿装在推送导管中,夹持辅助件从推送导管远端或夹持装置远端伸出,在瓣叶被远端夹头和近端夹头夹持住后,夹持辅助装置的远端部可支撑在瓣叶的下表面,将瓣叶向心房侧托起,进而减小瓣叶活动幅度,协助夹持装置稳定搏动的瓣叶。并且,夹持辅助装置支撑在瓣叶的下表面后,如果发现夹持位置不理想,可以微调夹持装置,在微调的过程中,夹持辅助装置的支撑作用会防止瓣叶自夹持装置中滑脱。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是心脏中正常腱索的示意图;
图2是心脏中腱索断裂的示意图;
图3是本发明实施例的人工腱索植入系统的人工腱索的第一种实施方式的结构示意图;
图4是本发明实施例的人工腱索植入系统的人工腱索的第二种实施方式的结构示意图;
图5是本发明实施例的人工腱索植入系统的人工腱索的第三种实施方式的结构示意图;
图6是本发明实施例的人工腱索植入系统的人工腱索的第四种实施方式的结构示意图;
图7至图10是本发明实施例的人工腱索植入系统的固定件与穿刺针头连接的不同实施方式的结构示意图;
图11是本发明实施例的人工腱索植入系统的结构示意图;
图12是本发明实施例的人工腱索植入系统的爆炸图;
图13是本发明实施例的人工腱索植入系统的夹持装置的远端夹头与近端夹头分离时的结构示意图;
图14是本发明实施例的人工腱索植入系统的夹持装置的远端夹头的夹持面的结构示意图;
图15是图14中的沿B-B线的剖视图;
图16是本发明实施例的人工腱索植入系统的夹持辅助装置的第一种实施方式结构示意图;
图17是本发明实施例的人工腱索植入系统的夹持辅助装置的第二种实施方式结构示意图;
图18是本发明实施例的人工腱索植入系统的推送装置的推送导管的第一种实施方式的结构示意图;
图19是图18中M处的局部放大图;
图20是本发明实施例的人工腱索植入系统的远端的结构示意图;
图21是本发明实施例的人工腱索植入系统的推送导管的第二种实施方式的结构示意图;
图22是本发明实施例的人工腱索植入系统的推送装置的推送导管的径向剖视图;
图23是本发明实施例的人工腱索植入系统的夹持辅助装置的第三种实施方式的结构示意图;
图24是本发明实施例的人工腱索植入系统的夹持辅助装置的第四种实施方式的结构示意图;
图25至图31是利用本发明实施例的人工腱索植入系统植入人工腱索的过程示意图;
图32及图33是本发明实施例的人工腱索植入系统的夹持辅助装置的第五及第六种实施方式结构示意图;
图34至图37是本发明实施例的人工腱索植入系统的夹持辅助装置的第七至第十种实施方式结构示意图;
图38是本发明实施例的人工腱索植入系统的夹持辅助装置的第十一种实施方式的结构示意图;
图39a及图39b是本发明实施例的人工腱索植入系统的夹持辅助装置的第十一种实施方式的夹持辅助装置及其承托瓣叶时的示意图;
图40a至图40c是本发明实施例的人工腱索植入系统的夹持辅助装置的第十二种实施方式的结构示意图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解,现对照附图详细说明本发明的具体实施方式。
在介入医疗器械技术领域,一般将靠近操作者的方位定义为近端,远离操作者的方位定义为远端。
如图3至31所示,人工腱索植入系统,用于将人工腱索植入患者体内,替代患者心脏内病变或者断裂的腱索。如图11至图13所示,人工腱索植入系统包括人工腱索100、夹持装置300、穿刺装置400和推送装置200。推送装置200包括推送导管210。穿刺装置400和夹持装置300分别活动地穿装在推送导管210中。夹持装置300中容置有人工腱索100。穿刺装置400包括两穿刺针头410及与两穿刺针头410近端分别连接的两穿刺推杆420,如图12所示。人工腱索植入系统还包括至少一个夹持辅助装置500。夹持辅助装置500包括活动地穿装于推送导管210中的夹持辅助臂520及设于夹持辅助臂520的远端的夹持辅助件510。夹持辅助件510用于与夹持装置300配合夹持瓣叶,夹持辅助臂520用于支撑 并推送夹持辅助件510。夹持辅助件510由弹性和/或柔性材料制成,夹持辅助件510与夹持辅助臂520共同收容于推送导管210中。夹持辅助臂520推动夹持辅助件510从推送导管210的远端或夹持装置300的远端穿出,夹持辅助件510与夹持装置300配合夹持瓣叶。
如图3至图6所示,人工腱索100包括一段具有柔性的腱索主体110。腱索主体110具有相对的第一端和第二端。第一端和/或第二端连接有固定件120。固定件120背向腱索主体110的一侧设有用于与穿刺针头410不可拆卸连接或可拆卸连接的穿刺连接件125。腱索主体110的一端固定在瓣叶上,另一端可以固定在心室壁上或者乳突肌等部位,以替代病变的腱索,维持瓣叶与心室壁之间的张力。腱索主体110具有柔性是指其在轴向无拉伸可以任意弯曲,一般腱索主体110采用柔性线的形式。腱索主体110的材料可以是与人体相容的高分子材料或者较为柔软的金属材料等。优选为高分子材料。
腱索主体110的第一端和第二端并没有方向、重要程度等区别。如图3所示,固定件120可以设置在腱索主体110的一端;如图4所示,也可以在腱索主体110的两端都设置固定件120。如图5所示,人工腱索100的数量可以是一根,也可以是两根或者多根。本实施例中,优选人工腱索100的数量为一根,且腱索主体110的第一端及第二端均设置固定件120。腱索主体110与固定件120之间固定连接,固定连接的方式可以采用打结、缠绕、焊接、粘接、卡接等各种固定方式,本发明不作限定。例如,可以将腱索主体110的一端穿出固定件120之后打结形成一个直径较大的线团,或者将末端焊接为一个直径较大的圆球,或者在末端再设置一个定位杆。如图6所示,当固定件120设置在腱索主体110的第一端时,由于腱索主体110的第二端没有设置固定件120,因此第二端应当通过打结、缠绕、或者设置球状末端、盘状末端等方式,使得第二端的直径大于腱索主体110的直径,以将腱索主体110的第二端固定在瓣叶的上表面。
固定件120用于与穿刺针头410形成可拆卸或不可拆卸连接,其形状与不同的连接方式相对应。固定件120设有穿刺连接件125用于与穿刺针头410的连接。由于穿刺针头410的远端通常为尖锐的锥形,固定件120与穿刺针头410的外表面之间应当具有尽可能大的接触面积,以形成稳定的连接。故,固定件120的背向腱索主体110的一侧设有用于容置穿刺针头的容置腔121,穿刺连接件125设置在容置腔121中。容置腔121的形状与穿刺针头410的远端形状相对应。容置腔121的形状通常是锥形或者柱形。固定件120通常为柱形,横截面形状可以是圆形、椭圆形、多边形等各种形状,一般优选圆形和椭圆形。穿刺针头410上设有与人工腱索100的穿刺连接件125形成固定连接的腱索连接件411。腱索连接件411与穿刺连接件125相配合提高了穿刺针头410与人工腱索100之间连接的可靠性。
固定件120的穿刺连接件125与穿刺针头410的腱索连接件411的连接方式有多种。
如图7所示,第一种实施方式中,穿刺连接件125为容置腔121侧壁上开设的内螺纹。腱索连接件411为设置穿刺针头410外表面上的外螺纹;在穿刺完成后,穿刺针头410与人工腱索100的固定件120螺纹连接,形成可拆卸连接。
如图8所示,第二种实施方式中,穿刺连接件125为容置腔121的侧壁上设置的粘接 层。腱索连接件411为穿刺针头410外表面设置的粘接层。具体地,在穿刺针头410外表面和容置腔121内壁整体或部分施加粘胶剂,形成粘接层,在穿刺完成后,与固定件120的穿刺连接件125的粘接层粘接固定,形成不可拆卸的整体。
如图9所示,第三种实施方式中,穿刺连接件125为容置腔121的侧壁上设置的粗糙面。腱索连接件411为穿刺针头410外表面设置的粗糙面。在穿刺完成后,固定件120与穿刺针头通过摩擦阻力,在穿刺完成后,形成可拆卸连接。
如图10所示,第四种实施方式中,穿刺连接件125为容置腔121的侧壁开设的至少一个凹槽或孔。腱索连接件411为设置在穿刺针头410的远端且与固定件120的穿刺连接件125形成过盈配合、卡扣连接或者键连接的至少一个凸齿或至少一圈凸沿。孔或者凹槽可以是盲孔也可以是通孔,只要其形状大致与穿刺针头上设置的凸起或凸沿相对应,以形成卡扣连接即可。本实施例中,优选设置三个凹槽,以提高固定件120与穿刺针头410之间的连接稳定性,减小连接后穿刺针头410晃动的幅度。
键连接可以选择平键连接、花键连接等键连接方式,并且形成紧键连接,以使得轴向上也能传递拉力,键连接结构为常规技术,在此不再赘述。
如图4至图6所示,为了增大人工腱索100与瓣叶之间的接触面积,以有效地降低人工腱索100撕裂瓣叶的风险,优选腱索主体110上套设防滑件130,且防滑件130可以沿腱索主体110轴向滑动。由此,穿刺针头410穿刺瓣叶并与人工腱索100的固定件120连接时,防滑件130预先设置在人工腱索100上,可将防滑件130推送至穿刺点,将防滑件130与人工腱索100一起固定在瓣叶上。
防滑件130在人工腱索100上的具体设置方式是:在防滑件130上设置通孔131,腱索主体110自通孔131中穿出。通孔131的设置数量与防滑件130的固定形式有关。
一种方式是每根腱索主体110设置一个防滑件130。这种结构中,防滑件130上设置一个通孔131,腱索主体110穿过该通孔131(如图5及图6所示)。
另一种方式是每根腱索主体110设置两个防滑件130。这种结构中,防滑件130上设置至少两个通孔131,腱索主体110的第一端和第二端分别穿过不同的通孔131(如图4所示)。
再一种方式是多根腱索主体110共用一个防滑件130。这种结构中,防滑件130上设置至少两个通孔131,至少两个腱索主体110各自穿过不同的通孔131。
为了防止防滑件130从腱索主体110上脱落,防滑件130上的通孔131的截面尺寸小于固定件120的截面尺寸。并且腱索主体110的没有设置固定件120的自由端应当通过打结、或者设置球状末端、盘状末端等方式,使得该自由端的直径大于防滑件130上的通孔131的直径(如图6所示)。
如图4至图6所示,为了将腱索主体110对瓣叶的作用力尽量分散至防滑件130与瓣叶之间的接触面,防滑件130需要与瓣叶尽量贴合,因此防滑件130设有与瓣叶贴合的贴合面132。除了贴合面132外,防滑件130具体结构不作限定,可以有多种结构:例如可以是具有一定面积的片状、盘状或者球状,甚至是不规则形状,优选片状。防滑件130的结构可以是无孔结构,也可以是网状结构、条栅状结构等。防滑件130应由生物相容性材 料制成,特性上可以是弹性材料制成,也可以是非弹性材料制成。具体地,防滑件130选自弹性垫片、心脏补片、毛毡片、网格结构、盘状结构或者双盘状结构中的至少一种。其中具有盘状结构或者双盘状结构的防滑件130的结构类似于现有技术中的封堵器,在此不再赘述。优选地,为了减小器械的整体尺寸,具有盘状结构或者双盘状结构的防滑件130应由形状记忆材料制成。
请继续参阅图11至图13,推送导管210为具有一定轴向长度的管状体或者具有内腔的杆状体。推送导管210具有多个相互分隔的轴向内腔。推送导管210可以采用一体成型的多腔管,也可以将外管和内管套装固定在一起,形成整体结构的推送导管210。推送导管210可以采用生物相容性的高分子材料(例如,聚甲醛POM、聚乙烯PE、尼龙PA、聚氯乙烯PVC、丙烯腈-丁二烯-苯乙烯共聚物ABS、尼龙弹性体Pebax或者聚氨酯PU)或者金属材料(例如,不锈钢或者镍钛合金)制成。推送导管210的近端设有第一手柄201,用于操纵推送导管210向远端推送或者向近端回撤。
推送导管210的一个内腔中穿装有穿刺装置400。穿刺针头410的作用是穿刺瓣叶并且与人工腱索100的固定件120连接,以将腱索主体110拉向近端。为了便于穿刺并且减小在瓣叶上形成的穿刺点直径,优选穿刺针头410的远端为锥形的直尖端。直尖端相比现有技术中的钩状针头,在瓣叶上形成的穿刺点小,术后易愈合。本实施例的人工腱索植入系统在瓣叶上形成的穿刺点的直径范围通常为0.3mm至1.5mm,进一步地,通过适宜的穿刺针头410的形状及直径,穿刺点的直径范围可控制在0.7mm左右。
穿刺推杆420近端设有第三手柄401,穿刺推杆420活动地穿装在推送导管210的内腔中。第三手柄401的近端自推送导管210近端穿出,由此,通过操作第三手柄401的轴向移动,即可带动穿刺推杆420沿推送导管210的轴向移动,进而驱动穿刺针头410向远端穿刺或者向近端回撤。在瓣叶被夹持后,穿刺针头410在第三手柄401驱动下,刺穿瓣叶,与人工腱索100的固定件120连接后,穿刺针头410与人工腱索100通过固定件120连接成为一个整体。
夹持装置300包括夹持推杆330、远端夹头310和近端夹头320。夹持推杆330穿装于推送导管210的一个内腔中。近端夹头320设置在推送导管210的远端。远端夹头310设置在夹持推杆330的远端。近端夹头320的远端设有一夹持面321。远端夹头310的近端设有一夹持面311。夹持推杆330的近端自推送导管210的近端穿出并设置第二手柄301。如图13所示,由此,向远端推送第二手柄301,带动夹持推杆330向远端移动,使得远端夹头310远离近端夹头320,夹持装置300处于张开状态,此时可微调人工腱索植入系统的远端,使得瓣叶进入到远端夹头310与近端夹头320之间形成的收容瓣叶的空间后,向近端回撤第二手柄301,带动夹持推杆330向近端移动,使得远端夹头310向近端夹头320靠近,夹持装置300处于夹持状态,如图11所示。此时,瓣叶被夹持装置300夹持并固定。近端夹头320与远端夹头310的形状应与推送导管210的形状配合一致,形成一个外表光滑的整体,便于推送及减轻对患者伤口的损伤。可以理解的是,向远端推动第二手柄301使得远端夹头310远离近端夹头320的状态,也可以通过向近端回撤第一手柄201及推送 导管210来达到。
如图11至图15所示,为了提高夹持的稳定性,近端夹头320的夹持面321与远端夹头310的夹持面311应相互贴合,并且分别具有较大的瓣叶接触面积。优选地,两个夹持面311、321都倾斜设置,即夹持面311、321与推送导管210轴向成小于90°夹角。另外,至少一个夹持面311、321上设有用于增强夹持力的夹持增强件312。优选夹持增强件为在夹持面上设置的凸起、凸棱、凹槽、凹坑中的至少一种。本实施例中,远端夹头310的夹持面311上设置凸棱作为夹持增强件312,各个凸棱之间平行。夹持面11呈台阶状。
如图14至图15所示,夹持推杆330内沿轴向设有人工腱索通道331,远端夹头310内设有人工腱索收容腔315。人工腱索收容腔315与人工腱索通道331相连通。人工腱索100的腱索主体110收容于人工腱索通道331及人工腱索收容腔315中。
远端夹头310的夹持面311开设有用于收容防滑件130的收容槽314。收容槽314与人工腱索收容腔315之间径向连通。
远端夹头310的夹持面311还开设有用于容置人工腱索100的固定件120的固定腔313。固定腔313与人工腱索收容腔315之间轴向连通。固定腔313与收容槽314之间径向连通。由此,人工腱索100的固定件120容置在远端夹头310中,且固定件120近端与穿刺针头410相对应。在穿刺针头410与固定件120连接后,可通过向近端后撤穿刺推杆420,带动穿刺针头410、固定件120、腱索主体110及防滑件130同时由远端夹头310的夹持面311被拉出,直至穿刺针头410、固定件120及腱索主体110共同穿过瓣叶,而防滑件130贴合至瓣叶的上表面。
固定腔313与人工腱索收容腔315之间轴向连通。固定腔313的作用是既可将人工腱索100的固定件120固定在固定腔313内,在固定件120受到外力牵拉后又可以从固定腔313内顺利地拉出。因此,固定腔313的形状与固定件120的形状相配合,且固定腔313的内切圆的直径大于人工腱索收容腔315的外接圆的直径。优选地,人工腱索收容腔315的外接圆的直径与固定腔313的内切圆的直径之比为(0.2~0.4)∶1。当固定腔313及人工腱索收容腔315的横截面均为圆形时,固定腔313的内切圆的直径即为固定腔313的圆形横截面的直径,人工腱索收容腔315的外接圆的直径即为人工腱索收容腔315的圆形横截面的直径。本实施例中,固定腔313的横截面为圆形,其直径为D1,人工腱索收容腔315的横截面为圆形,其直径为D2,且D2是D1的30%。如此设置的目的是:若D2过大,穿刺针头410在穿刺推杆420的推动下与人工腱索100的固定件120配合时,由于穿刺推杆420的向远端的推力,固定件120可能从固定腔313内滑脱到人工腱索收容腔315内,导致穿刺针头410与人工腱索100的固定件120之间不能一次性成功连接,延长手术时间;如D2过小,人工腱索100的腱索主体110不能从人工腱索收容腔315中顺利通过,导致穿刺针头410与人工腱索100的固定件120连接后,不能将人工腱索100顺利拉出夹持推杆330的夹持面311。
为了将腱索主体110及防滑件130均顺利地拉出远端夹头310的夹持面311,固定腔313与收容槽314之间径向连通。优选地,固定腔313与收容槽314之间的连通部分的宽 度D3是D1的20%-50%,如此设置的目的是:如果D3过大,人工腱索100的固定件120将不能牢固地固定在远端夹头310的固定腔313内,很容易从固定腔313内滑脱,直接导致人工腱索植入系统失效;如果D3过小,在穿刺针头410与人工腱索100的固定件120连接之后,不能顺畅地将固定件120从固定腔313内拉出,导致手术失败。可以理解的是,在其他实施例中,固定腔313及人工腱索收容腔315的横截面还可以为椭圆形、三角形、四边形、多边形等其他形状,只要固定腔313的形状与固定件120的形状相互配合,且人工腱索收容腔315的形状不影响腱索主体110在其中顺滑通过即可。
现有技术将人工腱索暴露在器械外部,使得器械外表面不光滑,导致器械进入人体时,增加了对组织的摩擦损伤,同时出现漏血的问题,增加了患者产生术后并发症的风险。而远端夹头310设置的固定腔313,是便于将人工腱索100放置并固定在人工腱索植入系统内部,避免人工腱索进入人体人过程中对组织的摩擦损伤。
最重要还在于:远端夹头310的固定腔313可固定人工腱索100的固定件120及防滑件130,在不用松开远端夹头310和近端夹头320的前提下,能够将腱索主体110及防滑件130拉至瓣叶,因此在夹持装置300的由闭合状态转变至张开状态时,瓣叶自夹持装置300中脱离,恢复搏动的瞬间,腱索主体110不会与瓣叶单独接触,避免腱索主体110的线性切割效应对搏动的瓣叶产生伤害。
现有技术中,以U型环套结合钩状针头的方式植入的人工腱索会造成瓣叶瓣缘的褶皱,使瓣叶的瓣缘形成人为缺口,无法形成对合缘,容易造成二尖瓣返流,手术效果不理想。本发明的人工腱索植入系统,由于腱索主体110收容在夹持推杆330中,且远端夹头320的固定腔313至远端夹头320边缘的距离即为植入后的人工腱索110与瓣叶边缘的距离,因此每根人工腱索110与瓣叶边缘的间距基本一致,可有效避免瓣叶边缘折叠,提高手术效果。
如图16所示,为了方便推送,在夹持辅助臂520近端还可设置第四手柄501。
如图12及图18至图19所示,在推送导管210中沿轴向设有辅助臂收容腔250,用来收容夹持辅助件510和夹持辅助臂520。
如图18至图20所示,推送导管210的侧壁设置有开口260,开口260与辅助臂收容腔250相贯通。当向远端推送第四手柄501,可驱动夹持辅助臂520推动夹持辅助件510从开口260中穿出。开口260也可以设置在近端夹头320的夹持面321或者近端夹头320的侧壁且与辅助臂收容腔250相贯通。
请参见图22,夹持推杆330穿装于推送导管210的内腔280中,两穿刺推杆420穿装于推送导管210的两内腔270中,且夹持推杆330与穿刺推杆420的轴线均与推送导管210的轴线平行。夹持推杆330设置于推送导管210的一侧,穿刺推杆420设置于推送导管210的另一侧。为了减轻患者损伤,减小患者的心脏切口,应当尽量减小推送导管210的整体外径,因此优选辅助臂收容腔250设置在夹持推杆330的收容腔280与穿刺推杆420的收容腔270之间。
如图11至图12、图20所示,穿刺时,夹持推杆330与瓣叶边缘接触,远端夹头310 与近端夹头320仅能夹住部分瓣叶,此时为了尽量让搏动的瓣叶保持稳定便于穿刺,需对远离瓣叶边缘处亦提供支撑力,因此需要使夹持辅助件510与推送导管210之间具有一定夹角,使得夹持辅助件510方可支撑在远离瓣叶边缘处的下表面。因此,需要使得辅助臂收容腔250远端的轴线与推送导管210的轴线之间形成范围为120-150°的夹角。辅助臂收容腔250沿推送导管210轴向设置,可以与推送导管210中轴线平行,也可以不平行,具体与夹持辅助装置500的结构相对应。
如图18及图19所示,推送导管210的第一种实施方式中,辅助臂收容腔250沿推送导管210轴向设置,辅助臂收容腔250为大致平直的腔体,整个辅助臂收容腔250倾斜设置于推送导管210中,且辅助臂收容腔250远端的轴线与推送导管210的轴线之间的夹角α范围为120-150°。
如图21所示,推送导管210的第二种实施方式中,辅助臂收容腔250包括远端腔体251和近端腔体252,近端腔体252大致平行于推送导管210的轴线,远端腔体251与近端腔体252之间的夹角γ的范围为120-150°。远端腔体251与近端腔体252之间平滑过渡,以不影响夹持辅助臂520在辅助臂收容腔250中的顺利通过。
辅助臂收容腔250的形状与夹持辅助臂520形状相对应,横截面可以是圆形或者椭圆形、月牙形、半圆形、多边形等任何适用形状,优选无棱角的圆形或者椭圆形。
请参见图16及17,夹持辅助装置500的夹持辅助件510的轴线与夹持辅助臂520的轴线之间的夹角β的范围为120-150°。夹持辅助件510用于辅助夹持装置300夹持瓣叶。夹持辅助件510由弹性和/或柔性材料制成,以适应瓣叶的解剖结构及瓣叶的活动幅度,且可以有效地避免损伤瓣叶。例如可以选择金属材料、聚合物材料或者金属-聚合物复合材料制成。弹性材料优选为形状记忆材料。
如图16至图17所示,夹持辅助装置500大致呈L形,由至少一根支撑杆形成。
如图16所示,夹持辅助装置500的第一实施方式中,夹持辅助件510大致呈L形,由一根支撑杆形成。
如图17所示,夹持辅助装置500的第二实施方式中,夹持辅助件510大致呈L形,由两根并列的支撑杆形成。
支撑杆可以为单层或者多层复合结构的实心或空心结构,还可以由单根丝或者多根丝绕制而成。支撑杆的截面可以为规则的圆形或者椭圆形、月牙形、半圆形、多边形等形状,优选为圆形。夹持辅助件510优选由带有形状记忆功能的弹性材料制成,如形状记忆金属材料。夹持辅助件510是光滑的,例如通过激光点焊形成光滑的圆头,没有毛刺、棱边、棱角等缺陷。
为了便于支撑瓣叶的下表面,夹持辅助件510截面尺寸优选为大于夹持辅助臂520的截面尺寸,以对瓣叶形成较为稳定的支撑。
夹持辅助臂520的支撑杆为具有轴向长度的支撑杆,可以由单层或者多层复合结构的空心或实心结构的金属或高分子材料制成,还可以由单根丝或者多根丝绕制而成。其中,图16中的夹持辅助臂520为一根支撑杆,图17中的夹持辅助臂520为两根并列的支撑杆。 夹持辅助臂520的截面可以为规则的圆形或者椭圆形、月牙形、半圆形、多边形或者环形等形状,优选为圆形。夹持辅助臂520优选由带有记忆功能的材料制成,可以由金属材料、聚合物材料或者金属-聚合物复合材料制成。夹持辅助臂520优先选择为具有一定硬度或刚度以提供支撑性及可推送性。夹持辅助臂520预装在推送导管210的辅助臂收容腔250中。如图20所示,待夹持辅助件510自辅助臂收容腔250的开口被推出后,夹持辅助件510贴在瓣叶的下表面,具有弹性或柔性的夹持辅助件510可以很好地顺应瓣叶的活动幅度,不会因为太硬而导致瓣叶穿孔或刺伤。夹持辅助臂520硬度较高,更利于推送力的传递,从而可通过移动第四手柄501带动整个夹持辅助臂520相对于推送导管210向远端移动或者向近端回撤。
在其他实施例中,夹持辅助件510与夹持辅助臂520可以是一体结构,或者夹持辅助件510与夹持辅助臂520之间不可拆卸或可拆卸连接在一起。
一体结构为一体成型制得,具体地,一体结构可以由具有一定轴向长度的、单层或者多层复合结构的、空心或实心的金属杆或高分子材料杆制成,还可以由单根丝或者多根丝绕制而成。
不可拆卸连接是:夹持辅助臂520和夹持辅助件510先分别单独加工后再通过焊接、粘接等形式固定连接在一起。
可拆卸连接是:夹持辅助臂520和夹持辅助件510先分别单独加工后,通过套接、螺纹连接、过盈配合等形式固定连接在一起。上述的连接方式是常规技术,在此不再赘述。
夹持辅助臂520的支撑性及夹持辅助件510的柔软性可以通过使用不同的材料分别制成夹持辅助件510和夹持辅助臂520来达到。即,夹持辅助臂520为硬质的杆状或管状结构;夹持辅助件510可采用弹性、柔性材料或两者的组合制成。
如图23所示,夹持辅助装置500的第三实施方式中,夹持辅助装置500亦大致呈L形,夹持辅助臂520包括弹性或柔性的辅助臂主体521及设于辅助臂主体521内部或外部的硬质支撑体522。硬质的支撑体522用于支撑辅助臂主体521。支撑体522可以与辅助臂主体521套装或并列设置,即先使用较柔软的材料制成整根杆体或管体作为夹持辅助件510和辅助臂主体521,然后在辅助臂主体521的内腔穿设硬度更高的内管、或者在辅助臂主体521的部分外表面套设或者并列设置硬度更高的外管作为支撑体522来提高夹持辅助臂520近端部的支撑性;还可以采用热缩管作为支撑体522包裹在较柔软的辅助臂主体521外表面,然后加热使热缩管收缩后包裹在辅助臂主体521的外表面以提高支撑性。还可以理解的是,对于单根丝或者多根丝绕制而成的辅助臂主体521,还可以先将Pebax等热塑性弹性体包裹在辅助臂主体521的部分外表面,然后加热使热塑性弹性体熔化后包裹在外表面同时渗透至多根丝或者单根丝之间的空隙中(即,支撑体522设于辅助臂主体521的外部和内部),以提高辅助臂主体521的支撑性。
为了适应辅助臂收容腔250的形状,夹持辅助件510的轴线与夹持辅助臂520轴线之间的夹角β的范围为120-150°。如图16所示,夹持辅助装置500的第一实施方式中,夹持辅助件510与夹持辅助臂520之间的夹角β为120°。如图17所示,夹持辅助装置500的第 二实施方式中,多根杆状的夹持辅助件510与夹持辅助臂520之间的夹角β均为140°。可以理解的是,在其他实施例中,如果采用柔性材料制成一体成型的夹持辅助臂520及夹持辅助件510,夹持辅助件510轴向与夹持辅助臂520收容至辅助臂收容腔250时,由于辅助臂收容腔250的远端腔体251和近端腔体252之间的夹角,使得夹持辅助件510轴线与夹持辅助臂520轴线之间形成范围为120-150°的夹角。
如图24所示,夹持辅助装置500的第四实施方式中,为了提高夹持辅助件510对瓣叶的支撑力,优选夹持辅助件510与夹持辅助臂520之间设有用于支撑夹持辅助件510并承托瓣叶的承托件530。承托件530收容于辅助臂收容腔250的远端腔体251中。承托件530的硬度大于夹持辅助件510的硬度且小于夹持辅助臂520的硬度。由此,当夹持辅助件510自推送装置200的开口260伸出并与瓣叶接触后,该承托件530位于瓣叶的下表面并托起瓣叶,由于夹持辅助件510具有弹性,承托件530也可随着瓣叶的搏动而上下运动,且由于承托件530的硬度较高,可对瓣叶提供更有效的支撑。在本实施方式中,由于硬度较高的承托件530可能无法顺利通过辅助臂收容腔250,因此优选辅助臂收容腔250为倾斜设置于推送导管210中的平直腔体;或者如图21所示,优选辅助臂收容腔250包括远端腔体251和近端腔体252,近端腔体252大致平行于推送导管210的轴线,远端腔体251与近端腔体252之间形成夹角γ的范围为120-150°,承托件530收容于远端腔体251中。在本实施方式中,为了将承托件530容置于推送导管210中,需要采用分体式设计的推送导管210,即,推送导管210包括彼此相对的两个具有大致半圆截面的管体,生产组装时,先将夹持辅助臂520、承托件530及夹持辅助件510共同放置在其中一个管体的辅助臂收容腔250中,然后将另一半管体与该管体对接并固定在一起。
夹持辅助件510为生物相容性的不透射X射线材料制成,如不锈钢、镍钛合金等,本实施例中采用镍钛合金。现有技术中,在夹持装置夹持住瓣叶之前,不能通过X射线等操作要求级别较低的方式判断人工腱索植入系统与瓣叶之间的相对位置,需要依赖精准的超声引导才能将夹持装置移动至适宜的位置,并通过超声观察瓣叶的搏动状态,待瓣叶搏动至靠近夹持装置时迅速驱动远端夹头与近端夹头之间的相对运动以夹持瓣叶。超声对医生的操作技术以及心脏超声图像的分析能力有较高的要求,导致手术难度增大,手术时间增长,从而增加了患者出现并发症的风险。由于夹持辅助件510由不透射X射线材料制成,夹持辅助件510与瓣叶接触后,柔性或者弹性的夹持辅助件510可以伴随瓣叶的活动幅度产生相应的摆动,因此在夹持装置夹持住瓣叶之前,操作者可以通过X射线快速准确地判断瓣叶的位置,从而更快速准确地操作夹持装置以夹持瓣叶,缩短手术时间,提高手术成功率。
以在二尖瓣后叶植入人工腱索的手术为例,说明本发明的人工腱索植入系统的实施过程:
第一步:请参见图25,将人工腱索植入系统推进至左心室内,继续推进人工腱索植入系统直至夹持装置300的远端夹头310及近端夹头320均位于左心房内;
第二步:请参见图26,向近端回撤推送导管210或者向远端推送夹持推杆330,使得 位于推送导管210远端的近端夹头320与位于夹持推杆330远端的远端夹头310分离,此时近端夹头320与远端夹头310之间形成瓣叶容纳空间;
第三步:参见图27,向远端推动第四手柄501,第四手柄501驱动夹持辅助臂520推送夹持辅助件510从开口260中穿出,此时夹持辅助件510支撑在瓣叶下表面以协助稳定搏动的瓣叶,保持第一手柄201、第二手柄301和第四手柄501之间的相对位置不变,向近端缓慢移动整个人工腱索植入系统,直至瓣叶进入近端夹头320与远端夹头310之间形成的瓣叶容纳空间中,且夹持辅助件510可以对瓣叶提供一定的支撑力;
第四步:参见图28a及图28b,轻微移动人工腱索植入系统的远端,直至瓣叶边缘与夹持推杆330接触,此时向近端后撤第二手柄301,驱动远端夹头310向近端夹头320移动直至二者闭合,瓣叶被夹持;
第五步:向远端推送第三手柄401,驱动穿刺针头410沿推送导管210的轴向向远端移动,即,穿刺针头410向远端夹头310方向移动,直至穿刺针头410穿过瓣叶,并与人工腱索100的固定件120之间形成固定连接;
第六步:参见图29,后撤第三手柄401,使得穿刺针头410带动人工腱索100的固定件120、与固定件120相连的腱索主体110依次穿过瓣叶,防滑件130也被自远端夹头310的夹持面311拉出,防滑件130的贴合面(即,下表面)与瓣叶的上表面接触,同时部分的腱索主体110压住防滑件130的上表面使其贴合瓣叶(如图30所示),此时,人工腱索100与瓣叶之间的点接触被改进为防滑件130与瓣叶之间的面接触,可有效降低瓣叶撕裂的风险;
第七步:继续后撤第三手柄401直至固定件120自推送导管210的近端撤出,然后后撤第四手柄501,带动夹持辅助件510回撤至辅助臂收容腔250中,撤出整个人工腱索植入系统,并调整留在心脏内的腱索主体110的长度,将腱索主体110的两端均固定在心室壁上(如图31所示)。
前述第四步中,在瓣叶被夹持装置300夹持后,如果发现夹持位置不理想,可以微调远端夹头310与近端夹头320的相对位置使得二者之间产生一定距离,然后再次夹持瓣叶;在微调的过程中,由于瓣叶下方的夹持辅助装置500对瓣叶具有一定的支撑作用,可以防止瓣叶从夹持装置300中滑脱。
本发明的人工腱索植入系统与现有技术相比,至少具有以下有益效果:
瓣叶被远端夹头和近端夹头夹持住后,位于夹持辅助臂的远端的夹持辅助件可支撑在瓣叶的下表面,协助夹持搏动的瓣叶。待夹持装置将瓣叶夹持后,如果需要微调夹持位置,位于瓣叶下方的夹持辅助装置对瓣叶具有支撑作用,可以有效地防止瓣叶从夹持装置中滑脱。
夹持辅助装置500可进行进一步的改进。如图32及33所示,夹持辅助装置500的第五及第六种实施方式与夹持辅助装置500的第一种至第四种实施方式基本相同,不同之处在于:夹持辅助件510为由多根支撑杆形成的变形结构。变形结构为Y形结构或伞形结构。变形结构收缩变形后与夹持辅助臂520共同收容于推送导管210中。具体地,变形结构为 由多根支撑杆形成的开放式的Y形结构或伞形结构为了便于在推送导管中被推送,夹持辅助件510具有压缩状态及自然状态时的伸展状态。夹持辅助件510在压缩状态时,可在推送导管210的辅助臂收容腔250中被推送;当夹持辅助件510由设于近端夹头320的夹持面、推送导管210的侧壁或者近端夹头320的侧壁的开口260中伸出后,转变为伸展状态,可支撑在瓣叶的下表面,稳定瓣叶,利于穿刺。
如图32所示,夹持辅助装置500的第五种实施方式中,夹持辅助装置500为由两根支撑杆形成的Y形结构。每根支撑杆的远端均为光滑的结构,例如圆头的结构形式,没有毛刺、棱边、棱角等缺陷,两支撑杆的之间的角度
Figure PCTCN2018100654-appb-000001
范围为20°-150°,优先为60°-90°,以对瓣叶提供稳定的支撑并且不影响夹持辅助件510向近端回收至推送导管210中。由于支撑杆具有柔性和弹性,夹持辅助件510可以合拢后收容至推送导管210的内腔中,当被从推送导管210中推出后,两根支撑杆由于其自身柔性和/或弹性会恢复至具有一定角度的Y形而支撑瓣叶。
相应地,近端夹头320的夹持面321、推送导管210的侧壁或者近端夹头320的侧壁设置至少两个开口260,每个开口260均与辅助臂收容腔250相贯通,夹持辅助件510从至少一个开口260中穿出。
使用时,先将夹持辅助件510预先收回至近端夹头320或推送导管210中,夹持辅助臂520收容至推送导管210的辅助臂收容腔250中,其近端自推送导管210的近端穿出。沿推送导管210的轴向向远端推动夹持辅助臂520近端的第四手柄501时,夹持辅助件510可以被顺畅地从开口260中推出,且推出后由于其自身的柔性和/或弹性可以转变为自然状态下的伸展状态(即,恢复为Y形),夹持辅助件510与瓣叶的下表面接触后对瓣叶提供支撑力;沿推送导管210的轴向向近端拉动夹持辅助臂520时,夹持辅助件510合拢,整个夹持辅助件510被顺畅地拉回推送导管210的辅助臂收容腔250中。夹持辅助臂520和夹持辅助件510可以是一体成型的整体结构,夹持辅助臂520和夹持辅助件510也可以单独成型后再连接在一起。
如图33所示,夹持辅助装置500的第六种实施方式中,可以理解的是,夹持辅助装置500的辅助夹持件510为由多根支撑杆形成的伞形结构。推送导管210中可以仅设置一个辅助臂收容腔250,至少两个夹持辅助装置500同时穿装于该辅助臂收容腔250中,即设置多个独立的夹持辅助件510和与其相连的夹持辅助臂520。多个夹持辅助件510经由同一个开口260穿出,此时构成夹持辅助件510的多根支撑杆之间具有一定夹角,并形成伞形结构,该伞形结构支撑在瓣叶的下表面,对瓣叶提供更有效的支撑。在本实施方式中,构成夹持辅助臂520的多根支撑杆之间可以通过环箍、外套管等限位件固定在一起;多根支撑杆也可以不必通过限位件彼此固定,仅由辅助臂收容腔250的壁面限制多个夹持辅助臂520之间的径向偏移。此外,可以单独控制每个支撑杆轴向移动,以调整每个支撑杆与瓣叶之间的相对位置,进而适应不同形状的瓣叶结构,达到更佳的支撑效果。还可以理解的是,在其他实施例中,构成夹持辅助件510的多根支撑杆还可以分别经由不同的开口260穿出。
可以理解的是,在其他实施例中,Y形结构或者伞形结构的夹持辅助件装置500的末端可以向夹持辅助臂520近端方向翻卷,夹持辅助件510朝向夹持辅助臂520的一侧形成一个凹陷区,如图33所示。此时,由于夹持辅助件510末端均向内翻卷并指向夹持辅助臂520近端方向,可避免夹持辅助件510的末端刺伤瓣叶或者心室壁。
夹持辅助装置500的第五及第六种实施方式与现有技术相比,至少具有以下有益效果:
夹持辅助装置呈Y形或伞形,夹持辅助件与瓣叶的接触面即为夹持辅助件所形成的平面,因此,夹持辅助装置与瓣叶之间的接触面积更大,支撑力更强;并且可以更好的贴合瓣叶,更有效对瓣叶进行支撑。
夹持辅助装置500可进行再一步的改进。
如图34至图36所示,夹持辅助装置500的第七至第九种实施方式,与夹持辅助装置500的第一种至第四种实施方式基本相同,不同之处在于,夹持辅助装置500的第七至第九种实施方式的位于夹持辅助臂520远端的夹持辅助件510为由多根支撑杆形成的变形结构,变形结构收缩变形后与夹持辅助臂520共同收容于推送导管210中。本实施例中的变形结构为闭环结构,闭环结构可以是圆形、菱形、椭圆形、梨形、多边形或者其他不规则但可以形成封闭结构的形状。
如图37所示,夹持辅助装置500的第十种实施方式中,两根支撑杆的近端优选为交叉设置,即,夹持辅助件510的近端为麻花型结构,由此,可增加夹持辅助件510与夹持辅助臂520之间的受力点面积,避免瓣叶的搏动导致夹持辅助件510与夹持辅助臂520之间连接处变形,进一步提高夹持辅助件510对瓣叶的支撑性。
如图38所示,夹持辅助装置500的第十一种实施方式中,闭环结构的支撑杆之间还可以设置至少一根具有柔性和/或弹性的连接杆511,以提高闭环结构的自身稳定性,进一步增强夹持辅助件510对瓣叶的支撑力。夹持辅助件510包括两根支撑杆及连接在两根支撑杆之间的连接杆511,每根支撑杆均对应于一个开口260,支撑杆的长度等于或者略大于开口260的长度。
还可以理解的是,在其他实施例中,当在闭环结构中设置多根支撑杆及连接杆时,闭环结构还可以形成片状结构或网状结构。
还可以理解的是,在其他实施例中,还可以对网状结构进行热定型处理,使网状结构形成可拉伸变形的盘状结构(类似于现有技术中的单盘封堵器),盘状结构可以进一步热定型处理形成柱状、巢状、扁圆状等结构。只要夹持辅助件510由形状记忆材料制成,即可通过推送导管210中的辅助臂收容腔250输送,并通过开口260伸出,恢复至自然展开状态,与瓣叶下表面接触并对瓣叶提供支撑。
由于辅助臂收容腔250的开口260与推送导管210的轴向之间夹角α的范围为120°-150°,因此当位于夹持辅助臂520远端的夹持辅助件510经由开口260被推出,夹持辅助件510恢复至伸展状态,且夹持辅助件510与推送导管210之间形成范围为120°-150°的夹角(如图39a所示)。由此,夹持辅助件510与瓣叶600的下表面接触(如图39b所示),且接触面具有较大的面积,因此本实施例的辅助装置能提供更稳定的支撑力。
请参见图40a至图40c,夹持辅助装置500的第十二种实施方式,与夹持辅助装置500的第十种实施方式的区别之处在于:夹持辅助臂520活动地穿装在辅助臂收容腔250中,夹持辅助臂520的远端设置夹持辅助件510。夹持辅助件510包括两根支撑杆510a、510b及连接在两根支撑杆510a、510b之间的连接杆510c。近端夹头320的夹持面321上、推送导管210或者近端夹头320的侧壁设置至少两个通孔作为开口260,多个开口260中的每一个均与辅助臂收容腔250相贯通。例如,可在推送导管210的侧壁同时设置两个开口260,或者在近端夹头320的夹持面上同时设置两个开口260,或在近端夹头320的侧壁同时设置两个开口260。组成夹持辅助件510的每根支撑杆510a、510b均对应于一个开口260,支撑杆510a、510b的长度等于或者略大于开口260的长度。即,支撑杆510a、510b的远端分别经由其中一个开口260中穿出并通过连接杆510c彼此相连。
两根支撑杆510a、510b及连接杆510c预先通过热定型处理,形成圆形、菱形、梨形、多边形或其他大致闭合的闭环结构。
使用前,夹持辅助臂520穿装在辅助臂收容腔250中,支撑杆510a、510b穿装在开口260处的辅助臂收容腔250内,连接杆510c贴附在推送导管210或者近端夹头320的外表面。可以理解的是,在其他实施例中,近端夹头320的外表面还可以设置用于收容连接杆的凹槽。
使用时,通过推动夹持辅助臂520近端的第四手柄501,使得夹持辅助臂520沿轴向向远端移动,使支撑杆510a、510b逐渐自推送导管210或近端夹头320的开口260中完全伸出,直至支撑杆510a、510b与连接杆510c恢复热定型处理后的自然状态,即,整个夹持辅助件510恢复伸展状态时的闭环状态。此时,支撑杆510a、510b与连接杆510c形成一个平面,该平面与瓣叶下表面接触后将瓣叶托起,提供支撑力。
可以理解的是,在这种实施方式中,如果仅使用一根夹持辅助臂520,则应当在夹持辅助臂520的远端与两根支撑杆510a、510b的近端之间分别设置一段过渡段520a、520b,过渡段520a、520b的长度大于或者等于支撑杆510a、510b的长度,由此,在推动夹持辅助臂520近端的第四手柄501后,过渡段520a、520b进入开口260中并将支撑杆510a、510b完全顶出,支撑杆510a、510b及连接杆510c恢复热定型后的自然状态。
还可以理解的是,在其他实施例中,也可以使用两根夹持辅助臂520,每根夹持辅助臂520的远端设置一根支撑杆,两根支撑杆510a、510b之间通过连接杆510c相连,由此,在推动两根夹持辅助臂520近端的第四手柄501后,两根夹持辅助臂520分别将两根支撑杆510a、510b完全顶出,支撑杆510a、510b及连接杆510c恢复热定型后的自然状态。可以理解的是,在其他实施例中,如果夹持辅助臂520自身的硬度较低,则不必设置过渡段520a、520b,仅依靠夹持辅助臂520将支撑杆推出开口260。
夹持辅助装置500的第十二种实施方式与现有技术相比,至少具有以下有益效果:
夹持辅助件与瓣叶之间的接触面积更大,并且,夹持辅助件受到瓣叶的作用力时,支撑杆与夹持辅助臂之间的单个受力点转变为两根支撑杆与两个开口之间的受力面,作用力被分散后,可以提供更大的支撑力,可以更好地顺应瓣叶的活动幅度,托起瓣叶。
综上,本发明的人工腱索植入系统,通过在人工腱索植入系统中增加夹持辅助装置,其中夹持辅助装置的夹持辅助臂活动地穿装在推送导管中,夹持辅助件从推送导管远端或夹持装置远端伸出,在瓣叶被远端夹头和近端夹头夹持住后,夹持辅助件可支撑在瓣叶的下表面,将瓣叶向心房侧托起,进而减小瓣叶活动幅度,协助夹持装置稳定搏动的瓣叶。并且,夹持辅助装置支撑在瓣叶的下表面后,如果操作者发现夹持位置不理想,可以微调夹持装置,在微调的过程中,夹持辅助装置的支撑作用会防止瓣叶自夹持装置中滑脱。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (26)

  1. 一种人工腱索植入系统,包括夹持装置、穿刺装置和推送装置,所述推送装置包括推送导管,所述穿刺装置和所述夹持装置分别活动地穿装在所述推送导管中,所述夹持装置中容置有人工腱索,所述植入系统还包括至少一个夹持辅助装置;
    所述夹持辅助装置包括活动地穿装于所述推送导管中的夹持辅助臂及设于所述夹持辅助臂的远端的夹持辅助件;
    所述夹持辅助件由弹性和/或柔性材料制成且能够变形,所述夹持辅助件与所述夹持辅助臂共同收容于所述推送导管中;
    所述夹持辅助臂推动所述夹持辅助件从所述推送导管的远端穿出,所述夹持辅助件与所述夹持装置配合夹持瓣叶。
  2. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述夹持辅助件的轴线与所述夹持辅助臂的轴线之间的夹角范围为120-150°。
  3. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述夹持辅助件与所述夹持辅助臂为一体结构,或者所述夹持辅助件与所述夹持辅助臂之间不可拆卸或可拆卸连接。
  4. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述夹持辅助臂为由硬质材料制成的杆状或管状结构;
    或者所述夹持辅助臂包括由弹性或/和柔性材料制成的辅助臂主体及设于所述辅助臂主体外部和/或内部的由硬质材料制成的支撑体。
  5. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述推送导管内沿轴向设有辅助臂收容腔,所述辅助臂收容腔包括远端腔体和近端腔体,所述近端腔体大致平行于所述推送导管的轴线,所述远端腔体与所述近端腔体之间的夹角范围为120-150°。
  6. 根据权利要求5所述的人工腱索植入系统,其特征在于,所述夹持辅助件与所述夹持辅助臂之间设有承托件,所述承托件收容于所述辅助臂收容腔的所述远端腔体中,所述承托件的硬度大于所述夹持辅助件的硬度且小于所述夹持辅助臂的硬度。
  7. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述夹持辅助件至少部分由不透射X射线材料制成。
  8. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述夹持辅助件装置为由至少一根支撑杆形成的L形的杆状结构,所述夹持辅助件与所述夹持辅助臂共同收容于所述推送导管中;
    或者所述夹持辅助件为由多根支撑杆形成的变形结构,所述变形结构选自Y形结构、伞形结构、闭环结构、片状结构、网状结构或盘状结构中的至少一种,所述变形结构收缩变形后与所述夹持辅助臂共同收容于所述推送导管中。
  9. 根据权利要求1所述的人工腱索植入系统,其特征在于,所述人工腱索包括一段具有柔性的腱索主体,所述腱索主体具有相对的第一端和第二端,所述第一端和/或所述第二端连接有固定件,所述固定件背向腱索主体的一侧设有用于与穿刺装置的穿刺针头相连接的穿刺连接件。
  10. 根据权利要求9所述的人工腱索植入系统,其特征在于,所述腱索主体上套设有防滑件,所述防滑件设有与瓣叶贴合的贴合面,所述防滑件沿所述腱索主体的轴向滑动。
  11. 根据权利要求5所述的人工腱索植入系统,其特征在于,所述夹持装置包括夹持推杆及用于配合夹持瓣叶的远端夹头和近端夹头,所述近端夹头设置在所述推送导管的远端,所述远端夹头设置在所述夹持推杆的远端;
    所述近端夹头的远端设置的夹持面上、所述推送导管的侧壁或者所述近端夹头的侧壁设置有开口,所述开口与所述辅助臂收容腔相贯通,所述夹持辅助件从所述开口中穿出。
  12. 根据权利要求11所述的人工腱索植入系统,其特征在于,所述近端夹头的近端设置的夹持面上、所述推送导管的侧壁或者所述近端夹头的侧壁设置至少一个开口,所述至少一个开口与所述辅助臂收容腔相贯通,所述夹持辅助件从至少一个所述开口中穿出。
  13. 根据权利要求11所述的人工腱索植入系统,其特征在于,所述夹持辅助件包括两根支撑杆及连接在两根支撑杆之间的连接杆,每根支撑杆均对应于一个所述开口,所述支撑杆的长度等于或者略大于所述开口的长度。
  14. 根据权利要求11所述的人工腱索植入系统,其特征在于,所述夹持推杆内沿轴向设有人工腱索通道,所述远端夹头内设有人工腱索收容腔,所述人工腱索收容腔的远端贯通至所述远端夹头的夹持面,所述人工腱索通道与所述人工腱索收容腔相连通,所述人工腱索收容于所述人工腱索通道及所述人工腱索收容腔中。
  15. 根据权利要求11所述的人工腱索植入系统,其特征在于,所述远端夹头的夹持面开设有用于收容人工腱索的防滑件的收容槽,所述收容槽与所述人工腱索收容腔之间径向连通。
  16. 根据权利要求15所述的人工腱索植入系统,其特征在于,所述远端夹头的夹持面开设有用于容置人工腱索的固定件的固定腔,所述固定腔与所述人工腱索收容腔之间轴向连通,所述固定腔与所述收容槽之间径向连通。
  17. 根据权利要求16所述的人工腱索植入系统,其特征在于,所述固定腔的形状与所述固定件的形状相对应,且所述固定腔的内切圆的直径大于所述人工腱索收容腔的外接圆的直径。
  18. 根据权利要求11所述的人工腱索植入系统,其特征在于,所述近端夹头的夹持面与所述远端夹头的夹持面相互贴合,至少一个所述夹持面上设有用于增强夹持力的夹持增强件。
  19. 一种夹持辅助装置,安装于人工腱索植入系统,所述夹持辅助装置包括一夹持辅助臂及设于所述夹持辅助臂的一端的夹持辅助件,所述夹持辅助件由弹性和/或柔性材料制成且能够变形以支撑瓣叶。
  20. 根据权利要求19所述的夹持辅助装置,其特征在于,夹持辅助装置大致呈L形,所述夹持辅助件的轴线与所述夹持辅助臂的轴线之间的夹角范围为120-150°。
  21. 根据权利要求20所述的夹持辅助装置,其特征在于,所述夹持辅助件与所述夹持辅助臂为一体结构,或者所述夹持辅助件与所述夹持辅助臂之间不可拆卸或可拆卸连接。
  22. 根据权利要求20所述的夹持辅助装置,其特征在于,所述夹持辅助臂包括由弹性或/和柔性材料制成的辅助臂主体及设于所述辅助臂主体外部和/或内部的由硬质材料制成的支撑体。
  23. 根据权利要求21所述的夹持辅助装置,其特征在于,所述夹持辅助件与所述夹持辅助臂之间设有承托件,所述承托件的硬度大于所述夹持辅助件的硬度且小于所述夹持辅助臂的硬度。
  24. 根据权利要求19所述的夹持辅助装置,其特征在于,所述夹持辅助件为由多根支撑杆形成的变形结构,所述变形结构选自Y形结构及伞形结构中的至少一种。
  25. 根据权利要求19所述的夹持辅助装置,其特征在于,所述夹持辅助件为由多根支撑杆形成的变形结构,所述变形结构选自闭环结构、片状结构、网状结构或盘状结构中的至少一种。
  26. 根据权利要求19所述的夹持辅助装置,其特征在于,所述夹持辅助件至少部分由不透射X射线材料制成。
PCT/CN2018/100654 2017-08-17 2018-08-15 人工腱索植入系统及其夹持辅助装置 WO2019034081A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US16/639,209 US11819409B2 (en) 2017-08-17 2018-08-15 Artificial chordae tendineae implantation system and clamp aiding apparatus thereof
EP18845642.0A EP3669826A4 (en) 2017-08-17 2018-08-15 SYSTEM FOR IMPLEMENTING ARTIFICIAL TENSIONING ROPES AND ASSOCIATED TIGHTENING ASSISTANCE APPARATUS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710708970.0 2017-08-17
CN201710708970.0A CN109394392B (zh) 2017-08-17 2017-08-17 人工腱索植入系统

Publications (1)

Publication Number Publication Date
WO2019034081A1 true WO2019034081A1 (zh) 2019-02-21

Family

ID=65362097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/100654 WO2019034081A1 (zh) 2017-08-17 2018-08-15 人工腱索植入系统及其夹持辅助装置

Country Status (4)

Country Link
US (1) US11819409B2 (zh)
EP (1) EP3669826A4 (zh)
CN (1) CN109394392B (zh)
WO (1) WO2019034081A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113598929B (zh) * 2021-07-13 2023-08-15 象山县第一人民医院医疗健康集团 具有钳口结构的电胸外科手术器械
CN116407356A (zh) * 2021-12-31 2023-07-11 杭州德晋医疗科技有限公司 防滑脱的人工腱索植入装置及系统

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000060995A2 (en) * 1999-04-09 2000-10-19 Evalve, Inc. Methods and apparatus for cardiac valve repair
US20080195126A1 (en) * 2007-02-14 2008-08-14 Jan Otto Solem Suture and method for repairing a heart
WO2009133715A1 (ja) * 2008-05-02 2009-11-05 株式会社ジェイ・エム・エス 人工腱索再建術用補助器
CN102341063A (zh) * 2008-12-22 2012-02-01 瓦尔泰克卡迪欧有限公司 可调瓣环成形装置及其调节机构
CN103347464A (zh) * 2010-12-29 2013-10-09 尼奥绰德有限公司 微创修复搏动心脏瓣膜小叶的可替换系统
CN104244841A (zh) * 2012-03-06 2014-12-24 海莱夫简易股份公司 具备环绕功能的医疗导管件
DE102011054176B4 (de) * 2011-09-12 2016-02-04 Highlife Sas Behandlungs-Katheter-System
US20160113769A1 (en) * 2010-11-18 2016-04-28 Pavilion Medical Innovations, Llc Tissue restraining devices and methods of use
ES2610992T3 (es) * 2012-11-20 2017-05-04 Innovheart S.R.L. Dispositivo para desplegar un sistema de alambres guías dentro de una cámara cardíaca para implantar una válvula cardíaca protésica
CN107569301A (zh) * 2017-07-31 2018-01-12 天之纬医疗科技(上海)有限公司 人工腱索及其人工腱索植入系统
CN108186163A (zh) * 2017-11-07 2018-06-22 杭州德晋医疗科技有限公司 带探测装置的人工腱索植入系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509518A (en) * 1982-02-17 1985-04-09 United States Surgical Corporation Apparatus for applying surgical clips
US6626930B1 (en) 1999-10-21 2003-09-30 Edwards Lifesciences Corporation Minimally invasive mitral valve repair method and apparatus
US7083628B2 (en) * 2002-09-03 2006-08-01 Edwards Lifesciences Corporation Single catheter mitral valve repair device and method for use
US20070049952A1 (en) * 2005-08-30 2007-03-01 Weiss Steven J Apparatus and method for mitral valve repair without cardiopulmonary bypass, including transmural techniques
US8303622B2 (en) 2007-03-14 2012-11-06 St. Jude Medical, Inc. Heart valve chordae replacement methods and apparatus
WO2009052528A2 (en) * 2007-10-18 2009-04-23 Neochord Inc. Minimially invasive repair of a valve leaflet in a beating heart
US8808368B2 (en) * 2008-12-22 2014-08-19 Valtech Cardio, Ltd. Implantation of repair chords in the heart
WO2011067770A1 (en) * 2009-12-02 2011-06-09 Valtech Cardio, Ltd. Delivery tool for implantation of spool assembly coupled to a helical anchor
EP3395298A1 (en) * 2011-06-27 2018-10-31 University of Maryland, Baltimore Transapical mitral valve repair device
US10499941B2 (en) * 2012-12-14 2019-12-10 Mayo Foundation For Medical Education And Research Mitral valve repair devices
CN204121085U (zh) * 2014-10-29 2015-01-28 上海理工大学 经心尖植入人工腱索修复二尖瓣反流的微创手术器械
CN104367351B (zh) * 2014-12-03 2017-12-19 李鸿雁 一种人工腱索介入装置
CN104665888A (zh) * 2015-02-16 2015-06-03 江苏大学 一种微创植入人工腱索的二尖瓣腱索缝纫机及其方法
CN104873307A (zh) * 2015-06-02 2015-09-02 北京迈迪顶峰医疗科技有限公司 瓣膜修复装置
CN206342526U (zh) * 2016-10-24 2017-07-21 胡金鼎 一种泌尿外科用的手术钳
FR3063631B1 (fr) * 2017-03-13 2019-03-22 Cmi'nov Dispositif de reparation des cordages de la valve mitrale d'un cœur par voie transfemorale
CN208989259U (zh) * 2017-08-17 2019-06-18 杭州德晋医疗科技有限公司 人工腱索植入系统

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000060995A2 (en) * 1999-04-09 2000-10-19 Evalve, Inc. Methods and apparatus for cardiac valve repair
US20080195126A1 (en) * 2007-02-14 2008-08-14 Jan Otto Solem Suture and method for repairing a heart
WO2009133715A1 (ja) * 2008-05-02 2009-11-05 株式会社ジェイ・エム・エス 人工腱索再建術用補助器
CN102341063A (zh) * 2008-12-22 2012-02-01 瓦尔泰克卡迪欧有限公司 可调瓣环成形装置及其调节机构
US20160113769A1 (en) * 2010-11-18 2016-04-28 Pavilion Medical Innovations, Llc Tissue restraining devices and methods of use
CN103347464A (zh) * 2010-12-29 2013-10-09 尼奥绰德有限公司 微创修复搏动心脏瓣膜小叶的可替换系统
DE102011054176B4 (de) * 2011-09-12 2016-02-04 Highlife Sas Behandlungs-Katheter-System
CN104244841A (zh) * 2012-03-06 2014-12-24 海莱夫简易股份公司 具备环绕功能的医疗导管件
ES2610992T3 (es) * 2012-11-20 2017-05-04 Innovheart S.R.L. Dispositivo para desplegar un sistema de alambres guías dentro de una cámara cardíaca para implantar una válvula cardíaca protésica
CN107569301A (zh) * 2017-07-31 2018-01-12 天之纬医疗科技(上海)有限公司 人工腱索及其人工腱索植入系统
CN108186163A (zh) * 2017-11-07 2018-06-22 杭州德晋医疗科技有限公司 带探测装置的人工腱索植入系统

Also Published As

Publication number Publication date
US11819409B2 (en) 2023-11-21
CN109394392B (zh) 2023-11-10
US20210045877A1 (en) 2021-02-18
EP3669826A4 (en) 2021-05-05
CN109394392A (zh) 2019-03-01
EP3669826A1 (en) 2020-06-24

Similar Documents

Publication Publication Date Title
WO2019091172A1 (zh) 人工腱索植入系统
WO2019024725A1 (zh) 人工腱索及人工腱索植入系统
JP6761120B2 (ja) 弁膜留め具
JP6714518B2 (ja) 弁膜逆流の治療のための僧帽弁インプラント
WO2019105073A1 (zh) 双侧人工腱索植入系统
WO2019184649A1 (zh) 心脏瓣膜修复系统及其缝合线锁结装置
CN109893297B (zh) 带夹持辅助装置的人工腱索植入系统
CN109475407A (zh) 二尖瓣后小叶逼近术
US11622761B2 (en) Heart valve repair method
CN209107426U (zh) 可调节的心脏瓣膜修复系统
US11737877B2 (en) Adjustable heart valve repair system
CN109806029B (zh) 带负压装置的人工腱索植入系统
WO2019034081A1 (zh) 人工腱索植入系统及其夹持辅助装置
CN109771094B (zh) 带位置检测装置的人工腱索植入系统
CN209529400U (zh) 人工腱索及其人工腱索植入系统
CN210114539U (zh) 带探测装置的人工腱索植入系统
CN208989259U (zh) 人工腱索植入系统
US20110125105A1 (en) Conduit protector

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18845642

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018845642

Country of ref document: EP

Effective date: 20200317