CN103142303B - Medical electric snare - Google Patents

Medical electric snare Download PDF

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Publication number
CN103142303B
CN103142303B CN201310081115.3A CN201310081115A CN103142303B CN 103142303 B CN103142303 B CN 103142303B CN 201310081115 A CN201310081115 A CN 201310081115A CN 103142303 B CN103142303 B CN 103142303B
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China
Prior art keywords
drag rope
pipe
flexible sheath
tract
driving link
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CN201310081115.3A
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CN103142303A (en
Inventor
张婵娟
张承
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Hangzhou Anjisi Medical Science and Technology Co., Ltd.
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HANGZHOU AGS MEDICAL TECHNOLOGY Co Ltd
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Abstract

Medical electric snare, comprise pipe handle and flexible sheath pipe, pipe handle is set with the shifting part of slip, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, the first drag rope is equipped with in flexible sheath pipe, the front end of the first drag rope is provided with lasso, and pipe handle is provided with high-frequency electrical plug, and the first drag rope is connected with high-frequency electrical plug; Be provided with the second drag rope in flexible sheath pipe, the front end of the second drag rope is provided with the string bag, and lasso and the string bag stretch out from the front end of flexible sheath pipe; First drag rope is connected with synchronous drive mechanism with the second drag rope, and synchronous drive mechanism makes the first drag rope and another recession of the second drag rope one advance.The present invention has can in the advantage of the cut rear timely recovery of polyp.

Description

Medical electric snare
Technical field
The invention belongs to medical instruments field, particularly a kind of Medical electric snare coordinating scope to use.
Background technology
Electricity snare is the conventional medical apparatus and instruments carrying out the interior arthroscopic diagnosis such as pipe intestinal polyp excision.The basic structure of existing electric snare is: finger ring circle pipe handle being set with slip, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, finger ring circle is connected with the energising elastic metallic yarn two ends forming ring, and the ring end of elastic metallic yarn is extended to the front end of flexible sleeve by pipe handle.During excision polyp, flexible sleeve is input to the affected site in human body through endoscopic forceps channel.When finger ring circle opposite handle moves forward, the front end from flexible sleeve is stretched out by the ring end of elastic metallic yarn, and automatically forms snare under elastic dilatation effect.By endoscopic views, be enclosed within polyp by snare, then moved backward by finger ring circle opposite handle gradually, snare diminishes thereupon gradually, until the polyp that is locked, then by elastic metallic yarn electrified regulation, makes polyp be solidified excision from normal structure.
Cut polyp must reclaim and carry out pathologic finding.Polyp cut after and digestive tract tube wall depart from, tumble in digestive tract.Now need the electric snare extracted in endoscopic forceps channel, Zai Jingqian inserts in road other endoscopic accessories, as nipper, the string bag, basket etc., finds and clamps the polyp tumbled, then polyp is communicated with scope and exits external together.The shortcoming of above-mentioned electric snare is: cannot directly reclaim after polypectomy, and the polyp tumbled is difficult to find, and causes substantially prolongs operating time.
Summary of the invention
In order to overcome the shortcoming that existing electric snare cannot directly reclaim after polypectomy, the invention provides a kind of can at the Medical electric snare of the cut rear timely recovery of polyp.
Medical electric snare, comprise pipe handle and flexible sheath pipe, pipe handle is set with the shifting part of slip, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, the first drag rope is equipped with in flexible sheath pipe, the front end of the first drag rope is provided with lasso, and pipe handle is provided with high-frequency electrical plug, and the first drag rope is connected with high-frequency electrical plug;
It is characterized in that: be provided with the second drag rope in flexible sheath pipe, the front end of the second drag rope is provided with the string bag, and lasso and the string bag stretch out from the front end of flexible sheath pipe; First drag rope is connected with synchronous drive mechanism with the second drag rope, and synchronous drive mechanism makes the first drag rope and another recession of the second drag rope one advance.
Synchronous drive mechanism comprises the driving member of driving link, driven member and connection driving link and driven member, and driving link and shifting part are fixed, and the first drag rope is connected with driving link, and the second drag rope is connected with driven member.
In order to the structure of clear and definite synchronous drive mechanism, limit further: driving link and driven member are tooth bar, and driving member is and two tooth bar meshed gears, and driving member is rotatably installed on pipe handle.Shifting part is finger ring circle, and the front end of finger ring circle and the rear end of driving link are fixed.
During original state, the string bag and lasso are all accommodated in flexible sheath pipe.During work, finger ring circle promotes initiatively tooth bar and travels forward, initiatively tooth bar and travelling gear engaged transmission, while travelling gear engage with driven tooth bar, promote driven tooth bar and move backward.Promote the first drag rope when initiatively tooth bar travels forward to travel forward, lasso stretches out from flexible sheath pipe front end.Meanwhile, driven tooth bar moves backward, and the first drag rope moves backward, and it is inner that the string bag is still positioned at flexible sheath pipe.When lasso entangles polyp, finger ring circle is dropped back, and now initiatively tooth bar recession, driven tooth bar advance.Lasso be locked polyp time, high-frequency electrical plug passes into high-frequency electrical, lasso cutting polyp.While lasso recession, the string bag advances.When lasso cuts polyp completely and is incorporated in flexible sheath pipe, the string bag stretches out flexible sheath pipe completely, the polyp all firmly come off with the string bag, finally follows scope by the string bag with polyp and withdraws from human body together.
The structure of the second synchronous drive mechanism is as follows: driving member is synchronous pulley, synchronous pulley engages with flexible synchronous belt, flexible synchronous belt one end and the first drag rope are fixed, the other end and the second drag rope are fixed, one end that flexible synchronous belt and the first drag rope are fixed is as driving link, and one end that flexible synchronous belt and the second drag rope are fixed is as driven member.Shifting part is the driving lever be fixed on driving link, pipe handle offers the gathering sill of this driving lever of guiding motion.
When shifting part promotion driving link travels forward, because Timing Belt is non-telescoping, driven member must be caused to move backward.Thus realize when the first drag rope promotion lasso stretches out forward, the second drag rope is recalled backward with the string bag.When shifting part promotion driving link moves backward, equally because Timing Belt is non-telescoping, driven member is caused to travel forward.Therefore, it is possible to realize when lasso is recalled backward, the string bag launches forward.
The structure of the third synchronous drive mechanism is as follows: driving member is a pair belt wheel, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, conveyer belt and first drag rope of driving member side are fixed, conveyer belt and second drag rope of driving member opposite side are fixed, the conveyer belt part of fixing with the first drag rope is as driving link, and the conveyer belt part of fixing with the second drag rope is as driven member; Shifting part is the slide bar be fixed on driving link, pipe handle offers the gathering sill of this slide bar of guiding motion.
Because conveyer belt is the circle that of being tensioned on belt wheel is complete, conveyer belt is not collapsible, therefore, driving link be struck part driven forward time, driven member is inevitable to recession.Same, when driving link be struck part promote backward time, driving link must march forward.
In order to the structure of clear and definite flexible sheath pipe, limit further: have the first separate tract and the second tract in flexible sheath pipe, the first drag rope inserts in the first tract, and the second drag rope inserts in the second tract.
The concrete structure of the first flexible sheath pipe is as follows: flexible sheath pipe comprises the first sleeve pipe, the second sleeve pipe and the 3rd sleeve pipe, first sleeve pipe and the second casing pipe sleeve are connected in the 3rd sleeve pipe, the tube chamber of the first sleeve pipe is as the first tract, and the tube chamber of the second sleeve pipe is as the second tract.
The concrete structure of the second flexible sheath pipe is as follows: flexible sheath Guan Weiyi sleeve pipe, offers two independently pipelines in this sleeve pipe, and one of them pipeline is as the first tract, and another pipeline is as the second tract.
First drag rope and the second drag rope include the rigid metal tube be connected with synchronous drive mechanism and the bourdon tube inserted in flexible sheath pipe, and metal tube is positioned at pipe handle.
Beneficial effect of the present invention is: the present invention has lasso and the string bag two kinds of apparatuses simultaneously, when and lasso is locked, polyp moves backward, the string bag launches forward, thus can realize while polyp cuts by lasso, by the string bag, polyp is caught, thus without the need to using new apparatus to find the polyp tumbled in human body, the accuracy obtaining polyp is high, operating time is short, can alleviate patient suffering.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view using the first synchronous drive mechanism.
Fig. 2 is the front view using the first synchronous drive mechanism.
Fig. 3 is schematic diagram when using the first synchronous drive mechanism string bag to launch.
Fig. 4 is schematic diagram when using the first synchronous drive mechanism lasso to launch.
Fig. 5 is schematic diagram when using the second synchronous drive mechanism in handle.
Fig. 6 is the schematic appearance using the second synchronous drive mechanism.
Fig. 7 is the schematic diagram of the second synchronous drive mechanism.
Fig. 8 is the schematic diagram using the second synchronous drive mechanism string bag to launch.
Fig. 9 is the schematic diagram using the second synchronous drive mechanism lasso to launch.
Figure 10 is schematic diagram when using the third synchronous drive mechanism in handle.
Figure 11 is the schematic appearance using the third synchronous drive mechanism.
Figure 12 is the schematic diagram of the third synchronous drive mechanism.
Figure 13 is the schematic diagram using the third synchronous drive mechanism string bag to launch.
Figure 14 is the schematic diagram using the third synchronous drive mechanism lasso to launch.
Figure 15 is the schematic perspective view of flexible sheath pipe.
Figure 16 is the cross-sectional view of flexible sheath pipe.
Detailed description of the invention
Embodiment 1
As Figure 1-4, Medical electric snare, comprise pipe handle 1 and flexible sheath pipe 2, pipe handle 1 is set with the shifting part 3A of slip, the front end of pipe handle 1 is fixedly connected with the tail end of flexible sheath pipe 2, and the front end being equipped with the first drag rope 41, first drag rope 41 in flexible sheath pipe 2 is provided with lasso 5, pipe handle 1 is provided with high-frequency electrical plug 11, first drag rope 41 and is connected with high-frequency electrical plug 11;
The front end being provided with the second drag rope 42, second drag rope 42 in flexible sheath pipe 2 is provided with the string bag 6, and lasso 5 and the string bag 6 stretch out from the front end of flexible sheath pipe 2; First drag rope 41 is connected with synchronous drive mechanism with the second drag rope 42, and synchronous drive mechanism makes the first drag rope 41 and another recession of the second drag rope 42 1 advance.
Lasso is the ring formed by tinsel, the flexible net that the string bag comprises ring and woven by insulative filaments.
Synchronous drive mechanism comprises driving link 71A, driven member 72A to be fixed with the driving member 73A being connected driving link 71A and driven member 72A, driving link 71A and shifting part 3A, and the first drag rope 41 is connected with driving link 71A, and the second drag rope 42 is connected with driven member 72A.
As shown in Figure 3, driving link 71A and driven member 72A is tooth bar, and driving member 73A is and two tooth bar meshed gears, and driving member 73A is rotatably installed on pipe handle 1.Shifting part 3A is finger ring circle, and the front end of finger ring circle and the rear end of driving link 71A are fixed.
During original state, the string bag 6 and lasso 5 are all accommodated in flexible sheath pipe 2.During work, finger ring circle promotes initiatively tooth bar and travels forward, initiatively tooth bar and travelling gear engaged transmission, while travelling gear engage with driven tooth bar, promote driven tooth bar and move backward.Promote the first drag rope 41 when initiatively tooth bar travels forward to travel forward, lasso 5 stretches out from flexible sheath pipe 2 front end.Meanwhile, driven tooth bar moves backward, and the first drag rope 41 moves backward, and it is inner that the string bag 6 is still positioned at flexible sheath pipe 2.When lasso 5 entangles polyp, finger ring circle is dropped back, and now initiatively tooth bar recession, driven tooth bar advance.Lasso 5 be locked polyp time, high-frequency electrical plug 11 passes into high-frequency electrical, and lasso 5 cuts polyp.While lasso 5 is dropped back, the string bag 6 advances.When lasso 5 cuts polyp completely and is incorporated in flexible sheath pipe 2, the string bag 6 stretches out flexible sheath pipe 2 completely, the polyp all firmly come off with the string bag 6, finally follows scope by the string bag 6 with polyp and withdraws from human body together.
As shown in figs, have the first separate tract 21 and the second tract 22, first drag rope 41 inserts in the first tract 21 in flexible sheath pipe 2, the second drag rope 42 inserts in the second tract 22.
Flexible sheath pipe 2 comprises the first sleeve pipe, the second sleeve pipe and the 3rd sleeve pipe, and the first sleeve pipe and the second casing pipe sleeve are connected in the 3rd sleeve pipe, the tube chamber of the first sleeve pipe as the tube chamber of the first tract 21, second sleeve pipe as the second tract 22.
Certainly, flexible sheath pipe 2 can also be a sleeve pipe, offers two independently pipelines in this sleeve pipe, and one of them pipeline is as the first tract 21, and another pipeline is as the second tract 22.
First drag rope 41 and the second drag rope 42 include the rigid metal tube be connected with synchronous drive mechanism and the bourdon tube inserted in flexible sheath pipe 2, and metal tube is positioned at pipe handle 1.
The advantage of the present embodiment is: have and can realize while polyp cuts by lasso, caught by polyp, thus without the need to using new apparatus to find the polyp tumbled in human body, the accuracy obtaining polyp being high, and operating time is short, can alleviate patient suffering by the string bag.
Embodiment 2
From the difference part of embodiment 1, the present embodiment is that the structure of synchronous drive mechanism is different.Specifically: driving member 73B is synchronous pulley, synchronous pulley engages with flexible synchronous belt, flexible synchronous belt one end and the first drag rope 41 is fixing, the other end is fixing with the second drag rope 42, one end that flexible synchronous belt and the first drag rope 41 are fixed is as driving link 71B, and one end that flexible synchronous belt and the second drag rope 42 are fixed is as driven member 72B.Shifting part 3B is fixed on the driving lever on driving link 71B, and driving link 71B is provided with shifting part socket 74.Pipe handle 1 offers the gathering sill of this driving lever of guiding motion, as Figure 6-9.All the other structures are as all identical with embodiment 1 in flexible sheath pipe 2, pipe handle 1, first, second drag rope 42 etc.
When shifting part 3B promotion driving link 71B travels forward, because Timing Belt is non-telescoping, driven member 72B must be caused to move backward.Thus realize when the first drag rope 41 promote lasso 5 stretch out forward time, the second drag rope 42 is recalled backward with the string bag 6.When shifting part 3B promotion driving link 71B moves backward, equally because Timing Belt is non-telescoping, driven member 72B is caused to travel forward.Therefore, it is possible to realize when lasso 5 is recalled backward, the string bag 6 launches forward.
The advantage of the present embodiment is: have and can realize while polyp cuts by lasso, caught by polyp, thus without the need to using new apparatus to find the polyp tumbled in human body, the accuracy obtaining polyp being high, and operating time is short, can alleviate patient suffering by the string bag.
Embodiment 3
From the difference part of embodiment 1, the present embodiment is that the structure of synchronous drive mechanism is different.Specifically: driving member 73C is a pair belt wheel, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, conveyer belt and first drag rope 41 of driving member 73C side are fixed, conveyer belt and second drag rope 42 of driving member 73C opposite side are fixed, the conveyer belt part of fixing with the first drag rope 41 is as driving link 71C, and the conveyer belt part of fixing with the second drag rope 42 is as driven member 72C; Shifting part 3C is fixed on the slide bar on driving link 71C, pipe handle 1 offers the gathering sill of this slide bar of guiding motion, as shown in figures 10-14.All the other structures are as all identical with embodiment 1 in flexible sheath pipe 2, pipe handle 1, first, second drag rope 42 etc.
Because conveyer belt is the circle that of being tensioned on belt wheel is complete, conveyer belt is not collapsible, therefore, driving link 71C be struck part 3C driven forward time, driven member 72C is inevitable to recession.Same, when driving link 71C be struck part 3C promote backward time, driving link 71C must march forward.
The advantage of the present embodiment is: have and can realize while polyp cuts by lasso, caught by polyp, thus without the need to using new apparatus to find the polyp tumbled in human body, the accuracy obtaining polyp being high, and operating time is short, can alleviate patient suffering by the string bag.
Content described in this description embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.

Claims (8)

1. Medical electric snare, comprise pipe handle and flexible sheath pipe, pipe handle is set with the shifting part of slip, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, the first drag rope is equipped with in flexible sheath pipe, the front end of the first drag rope is provided with lasso, and pipe handle is provided with high-frequency electrical plug, and the first drag rope is connected with high-frequency electrical plug;
It is characterized in that: be provided with the second drag rope in flexible sheath pipe, the front end of the second drag rope is provided with the string bag, and lasso and the string bag stretch out from the front end of flexible sheath pipe; First drag rope is connected with synchronous drive mechanism with the second drag rope, and synchronous drive mechanism makes the first drag rope and another recession of the second drag rope one advance.
2. Medical electric snare as claimed in claim 1, it is characterized in that: synchronous drive mechanism comprises the driving member of driving link, driven member and connection driving link and driven member, driving link and shifting part are fixed, and the first drag rope is connected with driving link, and the second drag rope is connected with driven member.
3. Medical electric snare as claimed in claim 2, it is characterized in that: driving link and driven member are tooth bar, driving member is and two tooth bar meshed gears, and driving member is rotatably installed on pipe handle, shifting part is finger ring circle, and the front end of finger ring circle and the rear end of driving link are fixed.
4. Medical electric snare as claimed in claim 2, it is characterized in that: driving member is synchronous pulley, synchronous pulley engages with flexible synchronous belt, flexible synchronous belt one end and the first drag rope are fixed, the other end and the second drag rope are fixed, one end that flexible synchronous belt and the first drag rope are fixed is as driving link, and one end that flexible synchronous belt and the second drag rope are fixed is as driven member.
5. Medical electric snare as claimed in claim 2, it is characterized in that: driving member is a pair synchronous pulley, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, conveyer belt and first drag rope of driving member side are fixed, conveyer belt and second drag rope of driving member opposite side are fixed, and the conveyer belt part of fixing with the first drag rope is as driving link, and the conveyer belt part of fixing with the second drag rope is as driven member; Shifting part is the slide bar be fixed on driving link, pipe handle offers the gathering sill of this slide bar of guiding motion.
6. the Medical electric snare as described in one of claim 1-5, is characterized in that: have the first separate tract and the second tract in flexible sheath pipe, and the first drag rope inserts in the first tract, and the second drag rope inserts in the second tract.
7. Medical electric snare as claimed in claim 6, it is characterized in that: flexible sheath pipe comprises the first sleeve pipe, the second sleeve pipe and the 3rd sleeve pipe, first sleeve pipe and the second casing pipe sleeve are connected in the 3rd sleeve pipe, and the tube chamber of the first sleeve pipe is as the first tract, and the tube chamber of the second sleeve pipe is as the second tract.
8. Medical electric snare as claimed in claim 6, it is characterized in that: flexible sheath Guan Weiyi sleeve pipe, offer two independently pipelines in this sleeve pipe, one of them pipeline is as the first tract, and another pipeline is as the second tract.
CN201310081115.3A 2013-03-14 2013-03-14 Medical electric snare Active CN103142303B (en)

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CN103142303B true CN103142303B (en) 2016-02-17

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105286991B (en) * 2015-10-13 2017-10-31 南方医科大学 A kind of electric snare
CN105615948A (en) * 2016-03-09 2016-06-01 袁捷 Gastrointestinal endoscope biopsy channel operating instrument
CN112274220B (en) * 2020-10-08 2021-07-27 苏州法兰克曼医疗器械有限公司 Polyp snare for endoscopic surgery

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US5417697A (en) * 1993-07-07 1995-05-23 Wilk; Peter J. Polyp retrieval assembly with cauterization loop and suction web
US6007546A (en) * 1998-10-26 1999-12-28 Boston Scientific Ltd. Injection snare
CN1351480A (en) * 1999-05-19 2002-05-29 住友电木株式会社 Snare with recovering implement
US6663645B2 (en) * 1998-11-17 2003-12-16 Scimed Life Systems, Inc. Device for controlled endoscopic penetration of injection needle
CN1771888A (en) * 2004-11-10 2006-05-17 伊西康内外科公司 Tissue resection device
US7115125B2 (en) * 2001-01-12 2006-10-03 Granit Medical Innovations, Llc Medical cauterization snare assembly and associated methodology
CN201290721Y (en) * 2008-11-27 2009-08-19 南京医科大学附属南京第一医院 Medical electric snare
CN203417261U (en) * 2013-03-14 2014-02-05 杭州安杰思医学科技有限公司 Medical electric snare

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JP3968962B2 (en) * 2000-06-29 2007-08-29 フジノン株式会社 Resection collection tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417697A (en) * 1993-07-07 1995-05-23 Wilk; Peter J. Polyp retrieval assembly with cauterization loop and suction web
US6007546A (en) * 1998-10-26 1999-12-28 Boston Scientific Ltd. Injection snare
US6663645B2 (en) * 1998-11-17 2003-12-16 Scimed Life Systems, Inc. Device for controlled endoscopic penetration of injection needle
CN1351480A (en) * 1999-05-19 2002-05-29 住友电木株式会社 Snare with recovering implement
US7115125B2 (en) * 2001-01-12 2006-10-03 Granit Medical Innovations, Llc Medical cauterization snare assembly and associated methodology
CN1771888A (en) * 2004-11-10 2006-05-17 伊西康内外科公司 Tissue resection device
CN201290721Y (en) * 2008-11-27 2009-08-19 南京医科大学附属南京第一医院 Medical electric snare
CN203417261U (en) * 2013-03-14 2014-02-05 杭州安杰思医学科技有限公司 Medical electric snare

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Address after: 311100 Building 597 Kangxin Road, Yuhang District, Hangzhou City, Zhejiang Province, 5 and 6 (except Room 103 and 202)

Patentee after: Hangzhou Anjisi Medical Science and Technology Co., Ltd.

Address before: 310030 Zhenhua Road (West Lake Science Park), Xihu District, Hangzhou City, Zhejiang Province, 320

Patentee before: Hangzhou AGS Medical Technology Co., Ltd.

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