WO2009111936A1 - 组织切割装置 - Google Patents

组织切割装置 Download PDF

Info

Publication number
WO2009111936A1
WO2009111936A1 PCT/CN2008/073336 CN2008073336W WO2009111936A1 WO 2009111936 A1 WO2009111936 A1 WO 2009111936A1 CN 2008073336 W CN2008073336 W CN 2008073336W WO 2009111936 A1 WO2009111936 A1 WO 2009111936A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting device
tissue
catheter
tissue cutting
cutting head
Prior art date
Application number
PCT/CN2008/073336
Other languages
English (en)
French (fr)
Inventor
孟坚
Original Assignee
Meng Jian
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 Meng Jian filed Critical Meng Jian
Publication of WO2009111936A1 publication Critical patent/WO2009111936A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22038—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire

Definitions

  • the present invention relates to a tissue cutting device, and more particularly to a device for cutting, cutting and removing tissue by various invasive methods using various energy or mechanical methods.
  • a diseased heart valve e.g., a mitral valve or an aortic valve
  • a traditional treatment for valve replacement is surgical resection of the lesion in the case of direct vision, the patient is painful and slow to recover.
  • interventional treatment which does not require a thoracotomy. However, this makes it difficult to remove the leaflets. Summary of the invention
  • the present invention provides a tissue cutting device comprising: a catheter; a guide wire; an energy source; a retractable member that can be contracted in the catheter, guided through the guide wire in the catheter, and unfolded when unconstrained, the recovery member
  • the front end has a cutting head; a built-in energy transfer device.
  • the advantage of the tissue cutting device of the present invention is that the diseased tissue is resected and retracted by minimally invasive or interventional treatment, and the injury to the patient is small and the postoperative recovery is fast.
  • Figure 1 is a schematic view of the tissue cutting device of the present invention, showing the state in which the cutting device is located in the catheter;
  • Figure 2 is another schematic view of the tissue cutting device of the present invention, showing the state of the cutting device as it extends out of the catheter;
  • FIG. 3 is a schematic cross-sectional view of the end of the cutting head of the tissue cutting device of the present invention.
  • the tissue cutting device of the present invention can be delivered through a catheter to a diseased tissue to be resected (e.g., a diseased valve), and the diseased valve can be resected and withdrawn.
  • a diseased tissue to be resected e.g., a diseased valve
  • FIG. 1 is a schematic view of the tissue cutting device of the present invention, showing the state in which the cutting device is located in the catheter;
  • FIG. 2 is another schematic view of the tissue cutting device of the present invention, showing the state when the cutting device is extended from the catheter;
  • the tissue cutting device comprises: a retracting member 2 for excising tissue, a cutting head at the front end of the retrieving member 2; a catheter 1; a guide wire 3; an energy source.
  • the recovery member 2 can be contracted in the catheter 1 and guided through the guide wire 3 so as to be guided to the diseased tissue to be resected, as shown in Fig. 1.
  • the recovery member 2 projects from the catheter 1 and can be expanded, as shown in Fig. 2.
  • the cutting head of the front end of the recovery member 1 may be various types of cutting heads, for example, which can receive energy from an energy source through a wire, and cut the diseased tissue by laser, ultrasonic wave, radio frequency energy, resistance heat or mechanical force.
  • the wire may be integral with the guide wire 3 or may be a different component from the guide wire 3.
  • the recovery member 2 is shaped like a concave shape of an object without being restrained, and the filter can be used to form the recovery member 2.
  • the excised tissue falls into the depression.
  • the recovery member 2 is pulled back into the catheter 1 through the guide wire 3, as shown in Fig. 1.
  • the recovery member 2 is then gradually pulled back along the catheter 1 until it is outside the catheter, thereby taking the excised diseased tissue out of the body.
  • the above-mentioned recovery member 2 may be formed by using a screen which may be made of a memory alloy or other ductile material which can be shrunk in the duct and which can be expanded without being restrained, such as an organic elastic material.
  • the recovered component 2 of the cut tissue can also be made of a metal or synthetic material in the form of a hook, a mesh or a pincer, which fixes the cut tissue and takes out the cut tissue.
  • the end of the catheter and the end near the energy source can be connected to a vacuum suction device with a filter to ensure that the cut tissue can be discharged.
  • the shape of the cutting head at the front end of the recovery member 2 can be matched with the contour of the portion to be cut.
  • the cutting head 4 has an energy wire 5 therein, which receives energy from the energy source, passes through the laser, Ultrasound, radio frequency energy or resistance heat is used to excise the diseased tissue. It is also possible to form the cutting head 4 as a micro scalpel, which is cut by mechanical force.
  • the cutting head may be formed of metal or optical fiber, and is designed in various forms such as a rotary cutting head, a linear cutting head, or a point cutting head depending on the shape and position of the tissue or organ.
  • the wires may also be other built-in energy transfer devices and consist of metal wires or fiber optic or mechanical drive shafts that conduct energy or mechanical forces generated by an external energy source to the cutting head.
  • the catheter may be composed of a metal or polymeric material, designed as a tubular structure, acting as a conduit, protecting surrounding tissues and organs and directing the recovery component 2 .
  • the present invention is primarily directed to diseased heart valves (e.g., mitral or aortic valves), it will be apparent to those skilled in the art that the devices of the present invention can also be used on other diseased tissue to be resected in the body.
  • diseased heart valves e.g., mitral or aortic valves
  • the devices of the present invention can also be used on other diseased tissue to be resected in the body.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Laser Surgery Devices (AREA)
  • Surgical Instruments (AREA)

Description

组织切割装置 技术领域
本发明涉及一种组织切割装置， 具体说涉及一种通过微创方法， 利用各 种能源或机械方法将组织切、 割并取出的装置。 背景技术
在现有技术中， 通常已病变的心脏瓣膜（例如二尖瓣或主动脉瓣）通过换 瓣的传统治疗方法治疗。 但是换瓣的传统治疗方法为外科开胸在直视情况下 切除病变瓣， 病人痛苦大， 恢复慢。 近来， 出现了通过介入治疗来处理已病 变的心脏瓣膜的方法， 这种方法不需开胸。 但是， 这就使得瓣叶切除变得非 常困难。 发明内容
本发明的目的是设计一种组织切割装置， 其能够通过导管输送到欲切除 的心脏瓣膜处， 将病变瓣膜切除并收回。
本发明提供一种组织切割装置， 其包括： 导管； 导引丝； 能量源； 可收 缩在导管中、通过导引丝在导管中被引导、不受约束时可扩展开的回收部件， 回收部件的前端具有切割头； 内置能源传送装置。
本发明的组织切割装置的优点是通过微创或者介入治疗切除病变组织 并收回， 对于患者伤害小， 术后恢复快。 附图说明
图 1为本发明的组织切割装置的一个示意图， 显示切割装置位于导管中 的状态；
图 2为本发明的组织切割装置的另一个示意图， 显示切割装置伸出导管 时的状态；
图 3为本发明的组织切割装置的切割头的端部的截面示意图。 具体实施方式 本发明的组织切割装置能够通过导管输送到欲切除的病变组织（例如病 变的瓣膜）处， 将病变瓣膜切除并收回。
下面结合附图描述本发明装置及其作用和效果。 其中， 图 1为本发明的 组织切割装置的一个示意图， 显示切割装置位于导管中的状态； 图 2为本发 明的组织切割装置的另一个示意图， 显示切割装置伸出导管时的状态； 图 3 为本发明的组织切割装置的切割头的端部的截面示意图。
参见附图， 该组织切割装置包括： 切除组织的回收部件 2 , 回收部件 2 的前端具有切割头； 导管 1 ; 导引丝 3; 能量源。 其中， 回收部件 2可以收缩 在导管 1中， 通过导引丝 3在导管中被引导， 从而可被引导到需要切除的病 变组织处， 如图 1所示。 到达要切除的组织部位附近时， 回收部件 2从导管 1中伸出， 并可扩展开， 如图 2所示。
回收部件 1的前端的切割头可以为各种形式的切割头， 例如其可通过导 线接收来自能量源的能量， 通过激光、 超声波、 射频能量、 电阻热或者机械 力等将病变组织切除。 该导线可以与导引丝 3为一体， 或者与导引丝 3为不 同的部件。
回收部件 2在不受约束的情况下形状类似一个盛物体的凹陷形状， 可以 釆用滤网形成回收部件 2。 该被切除下来的组织落入该凹陷中。
完成切割后， 通过导引丝 3 , 将回收部件 2拉回到导管 1中， 如图 1所 示。 并继续沿着导管 1将回收部件 2逐渐拉回直到导管外， 从而将切下的病 变组织取出体外。
上述回收部件 2可以釆用滤网来形成， 其材质可以是记忆合金或者其他 可以收缩在导管中、 而在不受约束时可以扩展开的韧性材料， 例如有机弹性 材料。 切割下的组织的回收部件 2也可由金属或合成材料制成钩状、 网状或 钳状， 固定被切割组织及取出已切割组织。 导管尾端及靠近能量源的一端可 以连接一个带过滤网的负压吸引装置，以保证切割下来的组织可以排出体夕卜。
回收部件 2的前端的切割头的形状可以与要切割的部位的外廓吻合， 例 如图 3所示， 切割头 4内部有能量丝 5 , 该能量丝 5接受来自能量源的能量， 通过激光、 超声波、 射频能量或者电阻热等将病变组织切除。 也可以将切割 头 4形成为微型手术刀， 通过机械力来切割。
切割头可以由金属或光纤形成， 按组织或器官的形态、 位置而设计成旋 转切割头、 线状切割头、 或点状切割头等多种形态。 导线也可以是其他内置能源传送装置， 并由金属导线或光纤或机械传动 轴组成， 将外置能量源产生的能源或机械力传导到切割头。
导管可以由金属或高分子材料组成， 设计成管状结构， 起到管道作用， 保护周围的组织和器官并引导回收部件 2。
本发明虽然主要针对病变的心脏瓣膜（例如二尖瓣或主动脉瓣）， 但是本 领域技术人员显然能够理解， 本发明的装置也可以用于身体内的其他要切除 的病变组织上。
上述描述仅仅是对本发明的实质改进的举例， 它们不应成为本发明的范 围的限制， 而作为在此描述的本发明的优选实施例。 其它的变动是可能的， 并且本发明的范围不应由在此描述的实施例来限定， 而由权利要求书和其法 律上的等价物来限定。

Claims

权 利 要 求
1、 一种组织切割装置， 其特征在于， 该组织切割装 j
引丝； 能量源； 可收缩在导管中、 通过导引丝在导管
Figure imgf000006_0001
可扩展开的回收部件， 回收部件的前端具有切割头； 将能
切割头的内置能源传送装置。
2、 如权利要求 1 所述的组织切割装置， 其特征在于, 所述内置能源传 送装置为导线， 并与导引丝为一体的。
3、 如权利要求 1 所述的组织切割装置， 其特征在于, 回收部件为滤网 制的凹陷形状， 其材质是记忆合金或者合成材料。
4、 如权利要求 1 所述的组织切割装置， 其特征在于, 回收部件为钩状 或钳状， 由金属或者合成材料制成。
5、 如权利要求 1 所述的组织切割装置， 其特征在于, 还包括在导管尾 端形成负压的负压吸引装置。
6、 如权利要求 1 所述的组织切割装置， 其特征在于, 所述切割头由金 属或光纤形成。
7、 如权利要求 6 所述的组织切割装置， 其特征在于, 所述切割头形成 为旋转切割头、 线状切割头、 或点状切割头的形式。
8、 如权利要求 1 所述的组织切割装置， 其特征在于, 所述导管由金属 或高分子材料形成。
9、 如权利要求 1所述的组织切割装置， 其特征在于， 所述能量源为激 光、 射频、 超声波、 电阻热产生源。
PCT/CN2008/073336 2008-03-14 2008-12-04 组织切割装置 WO2009111936A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200820007790.6 2008-03-14
CNU2008200077906U CN201157386Y (zh) 2008-03-14 2008-03-14 组织切割装置

Publications (1)

Publication Number Publication Date
WO2009111936A1 true WO2009111936A1 (zh) 2009-09-17

Family

ID=40107977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/073336 WO2009111936A1 (zh) 2008-03-14 2008-12-04 组织切割装置

Country Status (2)

Country Link
CN (1) CN201157386Y (zh)
WO (1) WO2009111936A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201157386Y (zh) * 2008-03-14 2008-12-03 孟坚 组织切割装置
CN106726123A (zh) * 2017-02-22 2017-05-31 杨勋 一种用于从人体内切割及抽吸组织的装置
WO2021135436A1 (zh) * 2019-12-30 2021-07-08 杭州德晋医疗科技有限公司 瓣膜组织切割装置及瓣膜夹钳回收系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006936A1 (en) * 1988-01-27 1989-08-10 Medical Innovation Ab A device for cutting venous valves
JPH09313499A (ja) * 1996-05-29 1997-12-09 Olympus Optical Co Ltd 生体組織切除用処置具
US20050209617A1 (en) * 2004-03-05 2005-09-22 Paul Koven Valvulotome
US20060074484A1 (en) * 2004-10-02 2006-04-06 Huber Christoph H Methods and devices for repair or replacement of heart valves or adjacent tissue without the need for full cardiopulmonary support
US20080039881A1 (en) * 2006-07-07 2008-02-14 The Cleveland Clinic Foundation Apparatus and method for assisting in the removal of a cardiac valve
US20080255595A1 (en) * 2005-03-04 2008-10-16 Dale Buchbinder Valvulotome
CN201157386Y (zh) * 2008-03-14 2008-12-03 孟坚 组织切割装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006936A1 (en) * 1988-01-27 1989-08-10 Medical Innovation Ab A device for cutting venous valves
JPH09313499A (ja) * 1996-05-29 1997-12-09 Olympus Optical Co Ltd 生体組織切除用処置具
US20050209617A1 (en) * 2004-03-05 2005-09-22 Paul Koven Valvulotome
US20060074484A1 (en) * 2004-10-02 2006-04-06 Huber Christoph H Methods and devices for repair or replacement of heart valves or adjacent tissue without the need for full cardiopulmonary support
US20080255595A1 (en) * 2005-03-04 2008-10-16 Dale Buchbinder Valvulotome
US20080039881A1 (en) * 2006-07-07 2008-02-14 The Cleveland Clinic Foundation Apparatus and method for assisting in the removal of a cardiac valve
CN201157386Y (zh) * 2008-03-14 2008-12-03 孟坚 组织切割装置

Also Published As

Publication number Publication date
CN201157386Y (zh) 2008-12-03

Similar Documents

Publication Publication Date Title
US9717513B2 (en) Fracturing calcifications in heart valves
US20140155991A1 (en) Prosthetic valve implant site preparation techniques
US9561048B2 (en) Expandable endoscopic hoods and related methods of use
US8663217B2 (en) Devices and systems for valve removal
KR20170056618A (ko) 수정체 조직의 제거를 위한 장치 및 방법
US20060241566A1 (en) Nucleus Extraction from Spine Intervertebral Disc
EP2120736A1 (en) Apparatus and methods for removing relatively large and small stones from a body passage
KR20120098942A (ko) 부비동 및 비강 내에서의 조직 제거
JP2007313314A (ja) 内視鏡的粘膜切除術用の管腔スタビライザ
EP2797522B1 (en) Tissue resection device
JP2023534113A (ja) 尿道治療のための方法及びデバイス
WO2009111936A1 (zh) 组织切割装置
US20170348015A1 (en) Methods and systems for removing tissue from body cavities
US10555767B2 (en) Devices, systems, and methods for valve removal
US11457943B1 (en) Grasping prostate morcellator
JP2012090948A (ja) 低侵襲の切除組織片回収装置
US20240180618A1 (en) Percutaneous retrieval system
KR102718748B1 (ko) 조직 퇴축을 위한 장치 및 방법
CN118382397A (zh) 光机械血管治疗

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: 08873221

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08873221

Country of ref document: EP

Kind code of ref document: A1