CN103142303A - Medical electric snare - Google Patents

Medical electric snare Download PDF

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Publication number
CN103142303A
CN103142303A CN2013100811153A CN201310081115A CN103142303A CN 103142303 A CN103142303 A CN 103142303A CN 2013100811153 A CN2013100811153 A CN 2013100811153A CN 201310081115 A CN201310081115 A CN 201310081115A CN 103142303 A CN103142303 A CN 103142303A
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China
Prior art keywords
drag rope
pipe
flexible sheath
tract
driving link
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Granted
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CN2013100811153A
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Chinese (zh)
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CN103142303B (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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Priority to CN201310081115.3A priority Critical patent/CN103142303B/en
Publication of CN103142303A publication Critical patent/CN103142303A/en
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Publication of CN103142303B publication Critical patent/CN103142303B/en
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Abstract

The invention discloses a medical electric snare which comprises a tubular handle and a flexible sheathing canal, wherein a stirring piece that can slip is mounted on the tubular handle in a sleeving manner; the front end of the tubular handle is fixedly connected with the tail end of the flexible sheathing canal; a first dragrope is arranged in the flexible sheathing canal in a penetrating manner; a ferrule is arranged at the front end of the first dragrope; a high-frequency electric plug is arranged on the tubular handle, and connected with the first dragrope; a second dragrope is arranged in the flexible sheathing canal; a tuck net is arranged at the front end of the second dragrope; the ferrule and the tuck net extend out of the front end of the flexible sheathing canal; the first dragrope and the second dragrope are connected with a synchronous drive mechanism; and the synchronous drive mechanism allows the first dragrope and the second dragrope to advance and retreat respectively. The medical electric snare has the advantage that a polyp can be recovered timely after being removed.

Description

Medical electric snare
Technical field
The invention belongs to medical instruments field, particularly a kind of Medical electric snare that coordinates scope to use.
Background technology
The electricity snare is the medical apparatus and instruments commonly used that carries out the interior arthroscopic diagnosis such as pipe intestinal polyp excision.The basic structure of existing electric snare is: the finger ring circle of suit slip on pipe handle, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, the finger ring circle is connected with the energising elastic metallic yarn two ends that form ring, and the ring end of elastic metallic yarn is extended to the front end of flexible sleeve by pipe handle.Excision is during polyp, the disease position of flexible sleeve in endoscopic forceps channel is input to human body.When the relative handle of finger ring circle moved forward, the ring end of elastic metallic yarn will stretch out from the front end of flexible sleeve, and automatically formed snare under the elastic dilatation effect.By endoscopic views, snare is enclosed within on polyp, more gradually the finger ring circle is moved backward relative to handle, snare diminishes thereupon gradually, until the polyp that is locked then with elastic metallic yarn energising heating, makes polyp be solidified excision from normal structure.
Cut polyp must reclaim and carry out pathologic finding.The cut rear and digestive tract tube wall disengaging of polyp tumbles in digestive tract.Need to extract electric snare in endoscopic forceps channel this moment, then insert other endoscopic accessories through the pincers roads, as nipper, the string bag, basket etc., seeks and clamp the polyp that tumbles, then polyp is communicated with scope withdraws from together external.The shortcoming of above-mentioned electric snare is: can't directly reclaim after polypectomy, the polyp that tumbles is difficult to find, and causes greatly having extended operating time.
Summary of the invention
The shortcoming that can't directly reclaim after polypectomy in order to overcome existing electric snare, the invention provides a kind of can be at the Medical electric snare of the cut rear timely recovery of polyp.
Medical electric snare, comprise pipe handle and flexible sheath pipe, be set with the shifting part of slip on pipe handle, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, be equipped with the first drag rope in the flexible sheath pipe, the front end of the first drag rope is provided with lasso, and pipe handle is provided with the high-frequency electrical plug, and the first drag rope is connected with the high-frequency electrical plug;
It is characterized in that: be provided with the second drag rope in the 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; The first drag rope is connected with synchronous drive mechanism with the second drag rope, and synchronous drive mechanism makes another recession of advancing of the first drag rope and one of the second drag rope.
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.
For the structure of clear and definite synchronous drive mechanism, further limit: driving link and driven member are tooth bar, and driving member is and two tooth bar meshed gears that driving member is rotatably installed on pipe handle.Shifting part is the 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 all are accommodated in the flexible sheath pipe.During work, the finger ring circle promotes the active tooth bar and travels forward, active tooth bar and travelling gear engaged transmission, and while travelling gear and driven tooth bar mesh, promote driven tooth bar and move backward.Promote the first drag rope when initiatively tooth bar travels forward and travel forward, lasso stretches out from flexible sheath pipe front end.Simultaneously, driven tooth bar moves backward, and the first drag rope moves backward, and it is inner that the string bag still is positioned at the flexible sheath pipe.When lasso entangles polyp, the recession of finger ring circle, initiatively tooth bar recession this moment, driven tooth bar advance.When lasso was locked polyp, the high-frequency electrical plug passed into high-frequency electrical, lasso cutting polyp.In the lasso recession, the string bag advances.When lasso cut polyp fully and is incorporated in the flexible sheath pipe, the string bag stretched out the flexible sheath pipe fully, with the polyp that the string bag all firmly comes off, follows scope by the string bag with polyp at last and withdraws from together human body.
The structure of the second synchronous drive mechanism is as follows: driving member is synchronous pulley, synchronous pulley and flexible synchronous belt engagement, flexible synchronous belt one end and the first drag rope are fixed, the other end and the second drag rope are fixed, the end that flexible synchronous belt and the first drag rope are fixed is as driving link, and the end that flexible synchronous belt and the second drag rope are fixed is as driven member.Shifting part is the driving lever that is fixed on driving link, offers the gathering sill of this driving lever motion of guiding on pipe handle.
When shifting part promotion driving link travels forward, because Timing Belt is non-telescoping, must cause driven member to move backward.Thereby realize that the second drag rope is recalled backward with the string bag when the first drag rope promotion lasso stretches out forward.When shifting part promotion driving link moves backward, equally because Timing Belt is non-telescoping, cause driven member to travel forward.Therefore can realize that the string bag launches forward when lasso is recalled backward.
The structure of the third synchronous drive mechanism is as follows: driving member is a pair of belt wheel, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, conveyer belt and first drag rope of driving member one side are fixed, the conveyer belt of driving member opposite side and the second drag rope are fixed, with the fixing conveyer belt part of the first drag rope as driving link, with the fixing conveyer belt part of the second drag rope as driven member; Shifting part is the slide bar that is fixed on driving link, offers the gathering sill of this slide bar motion of guiding on pipe handle.
Be a complete circle that is tensioned on belt wheel due to conveyer belt, conveyer belt is not collapsible, and therefore, driving link is struck part when promoting forward, and driven member is inevitable to recession.Same, when driving link is struck part when promoting backward, driving link must march forward.
For the structure of clear and definite flexible sheath pipe, further limit: have the first separate tract and the second tract in the 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: the flexible sheath pipe comprises the first sleeve pipe, the second sleeve pipe and the 3rd sleeve pipe, 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 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, offer 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.
The first drag rope be connected drag rope and include the rigid metal tube that is connected with synchronous drive mechanism and insert bourdon tube in the flexible sheath pipe, metal tube is positioned at pipe handle.
Beneficial effect of the present invention is: the present invention has lasso and two kinds of apparatuses of the string bag simultaneously, and lasso is locked polyp when moving backward, the string bag launches forward, thereby when can realize that lasso downcuts polyp, by the string bag, polyp is caught, thereby need not to use new apparatus to seek the polyp that tumbles in human body, the accuracy that obtains polyp is high, operating time is short, can alleviate the patient suffering.
Description of drawings
Fig. 1 is the schematic perspective view that uses the first synchronous drive mechanism.
Fig. 2 is the front view that uses the first synchronous drive mechanism.
Fig. 3 is the schematic diagram when using the first synchronous drive mechanism string bag to launch.
Fig. 4 is the schematic diagram when using the first synchronous drive mechanism lasso to launch.
Fig. 5 is the schematic diagram in handle when using the second synchronous drive mechanism.
Fig. 6 is the schematic appearance of using the second synchronous drive mechanism.
Fig. 7 is the schematic diagram of the second synchronous drive mechanism.
Fig. 8 is the schematic diagram that uses the second synchronous drive mechanism string bag to launch.
Fig. 9 is the schematic diagram that uses the second synchronous drive mechanism lasso to launch.
Figure 10 is the schematic diagram in handle when using the third synchronous drive mechanism.
Figure 11 is the schematic appearance of using the third synchronous drive mechanism.
Figure 12 is the schematic diagram of the third synchronous drive mechanism.
Figure 13 is the schematic diagram that uses the third synchronous drive mechanism string bag to launch.
Figure 14 is the schematic diagram that uses 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.
The specific embodiment
Embodiment 1
As shown in Fig. 1-4, Medical electric snare, comprise pipe handle 1 and flexible sheath pipe 2, be set with the shifting part 3A of slip on pipe handle 1, the front end of pipe handle 1 is fixedly connected with the tail end of flexible sheath pipe 2, and the front end that is equipped with the first drag rope 41, the first drag ropes 41 in flexible sheath pipe 2 is provided with lasso 5, pipe handle 1 is provided with high-frequency electrical plug 11, the first drag ropes 41 and is connected with high-frequency electrical plug 11;
The front end that is provided with the second drag rope 42, the second drag ropes 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; The first drag rope 41 is connected with synchronous drive mechanism with the second drag rope 42, and synchronous drive mechanism makes another recession of advancing of the first drag rope 41 and 42 1 of the second drag ropes.
Lasso is the ring that is formed by tinsel, and the string bag comprises ring and the flexible net that is formed by the braiding of insulation filament.
Synchronous drive mechanism comprises driving link 71A, driven member 72A and the driving member 73A that is connected driving link 71A and driven member 72A, and driving link 71A and shifting part 3A fix, 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 are tooth bar, and driving member 73A is and two tooth bar meshed gears that driving member 73A is rotatably installed on pipe handle 1.Shifting part 3A is the finger ring circle, and the rear end of the front end of finger ring circle and driving link 71A is fixed.
During original state, the string bag 6 and lasso 5 all are accommodated in flexible sheath pipe 2.During work, the finger ring circle promotes the active tooth bar and travels forward, active tooth bar and travelling gear engaged transmission, and while travelling gear and driven tooth bar mesh, promote driven tooth bar and move backward.Promote the first drag rope 41 when initiatively tooth bar travels forward and travel forward, lasso 5 stretches out from flexible sheath pipe 2 front ends.Simultaneously, driven tooth bar moves backward, and the first drag rope 41 moves backward, and the string bag 6 still is positioned at flexible sheath pipe 2 inside.When lasso 5 entangles polyp, the recession of finger ring circle, initiatively tooth bar recession this moment, driven tooth bar advance.When lasso 5 was locked polyp, high-frequency electrical plug 11 passed into high-frequency electrical, lasso 5 cutting polyps.In lasso 5 recession, the string bag 6 advances.When lasso 5 cuts polyp fully and is incorporated into flexible sheath pipe 2 when interior, the string bag 6 stretches out flexible sheath pipe 2 fully, with the polyp that the string bag 6 all firmly comes off, follows scope by the string bag 6 with polyp at last and withdraws from together human body.
As shown in Figure 15 and 16, have in flexible sheath pipe 2 in the first separate tract 21 and second tract 22, the first drag ropes 41 insertion the first tracts 21, the second drag rope 42 inserts in the second tracts 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, the second sleeve pipes 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.
The first drag rope 41 be connected drag rope 42 and include the rigid metal tube that is connected with synchronous drive mechanism and insert bourdon tube in flexible sheath pipe 2, metal tube is positioned at pipe handle 1.
The advantage of the present embodiment is: have when can realize that lasso downcuts polyp, by the string bag, polyp is caught, thereby need not to use new apparatus to seek the polyp that tumbles in human body, the accuracy that obtains polyp is high, and operating time is short, can alleviate the patient suffering.
Embodiment 2
The present embodiment is that from the difference part of embodiment 1 structure of synchronous drive mechanism is different.Specifically: driving member 73B is synchronous pulley, synchronous pulley and flexible synchronous belt engagement, flexible synchronous belt one end and the first drag rope 41 are fixing, the other end is fixed with the second drag rope 42, the end that flexible synchronous belt and the first drag rope 41 are fixed is as driving link 71B, and the end that flexible synchronous belt and the second drag rope 42 are fixed is as driven member 72B.Shifting part 3B is the driving lever that is fixed on driving link 71B, and driving link 71B is provided with shifting part socket 74.Offer the gathering sill of this driving lever motion of guiding on pipe handle 1, as shown in Fig. 6-9.All the other structures such as flexible sheath pipe 2, pipe handle 1, first, second drag rope 42 etc. are all identical with embodiment 1.
When shifting part 3B promotion driving link 71B travels forward, because Timing Belt is non-telescoping, must cause driven member 72B to move backward.Thereby realize that the second drag rope 42 is recalled backward with the string bag 6 when the first drag rope 41 promotion lassos 5 stretch out forward.When shifting part 3B promotion driving link 71B moves backward, equally because Timing Belt is non-telescoping, cause driven member 72B to travel forward.Therefore can realize that when lasso 5 was recalled backward, the string bag 6 launched forward.
The advantage of the present embodiment is: have when can realize that lasso downcuts polyp, by the string bag, polyp is caught, thereby need not to use new apparatus to seek the polyp that tumbles in human body, the accuracy that obtains polyp is high, and operating time is short, can alleviate the patient suffering.
Embodiment 3
The present embodiment is that from the difference part of embodiment 1 structure of synchronous drive mechanism is different.Specifically: driving member 73C is a pair of belt wheel, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, the conveyer belt of driving member 73C one side and the first drag rope 41 are fixing, the conveyer belt of driving member 73C opposite side and the second drag rope 42 are fixing, with the fixing conveyer belt part of the first drag rope 41 as driving link 71C, with the fixing conveyer belt part of the second drag rope 42 as driven member 72C; Shifting part 3C is the slide bar that is fixed on driving link 71C, offers the gathering sill of this slide bar motion of guiding on pipe handle 1, as shown in Figure 10-14.All the other structures such as flexible sheath pipe 2, pipe handle 1, first, second drag rope 42 etc. are all identical with embodiment 1.
Be a complete circle that is tensioned on belt wheel due to conveyer belt, conveyer belt is not collapsible, and therefore, driving link 71C is struck part 3C when promoting forward, and driven member 72C is inevitable to recession.Same, when driving link 71C is struck part 3C when promoting backward, driving link 71C must march forward.
The advantage of the present embodiment is: have when can realize that lasso downcuts polyp, by the string bag, polyp is caught, thereby need not to use new apparatus to seek the polyp that tumbles in human body, the accuracy that obtains polyp is high, and operating time is short, can alleviate the patient suffering.
The described content of this description embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches conceives 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, be set with the shifting part of slip on pipe handle, the front end of pipe handle is fixedly connected with the tail end of flexible sheath pipe, be equipped with the first drag rope in the flexible sheath pipe, the front end of the first drag rope is provided with lasso, and pipe handle is provided with the high-frequency electrical plug, and the first drag rope is connected with the high-frequency electrical plug;
It is characterized in that: be provided with the second drag rope in the 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; The first drag rope is connected with synchronous drive mechanism with the second drag rope, and synchronous drive mechanism makes another recession of advancing of the first drag rope and one of the second drag rope.
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, and driving member is and two tooth bar meshed gears that driving member is rotatably installed on pipe handle, shifting part is the 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 and flexible synchronous belt engagement, flexible synchronous belt one end and the first drag rope are fixed, the other end and the second drag rope are fixed, the end that flexible synchronous belt and the first drag rope are fixed is as driving link, and the 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 of belt wheel, on synchronous pulley, tensioning has conveyer belt, conveyer belt is a complete circle, conveyer belt and first drag rope of driving member one side are fixed, the conveyer belt of driving member opposite side and the second drag rope are fixed, with the fixing conveyer belt part of the first drag rope as driving link, with the fixing conveyer belt part of the second drag rope as driven member; Shifting part is the slide bar that is fixed on driving link, offers the gathering sill of this slide bar motion of guiding on pipe handle.
6. 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 the flexible sheath pipe, in first drag rope insertion the first tract, in second drag rope insertion the second tract.
7. Medical electric snare as claimed in claim 6, it is characterized in that: the flexible sheath pipe comprises the first sleeve pipe, the second sleeve pipe and the 3rd sleeve pipe, the 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 is characterized in that: flexible sheath Guan Weiyi sleeve pipe, offer 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.
CN201310081115.3A 2013-03-14 2013-03-14 Medical electric snare Active CN103142303B (en)

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CN103142303B CN103142303B (en) 2016-02-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105286991A (en) * 2015-10-13 2016-02-03 南方医科大学 Electric snare
CN105615948A (en) * 2016-03-09 2016-06-01 袁捷 Gastrointestinal endoscope biopsy channel operating instrument
CN112274220A (en) * 2020-10-08 2021-01-29 苏州法兰克曼医疗器械有限公司 Polyp snare for endoscopic surgery

Citations (9)

* 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
JP2002011014A (en) * 2000-06-29 2002-01-15 Fuji Photo Optical Co Ltd Resected tissue collecting tool and collecting method of the same
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

Patent Citations (9)

* 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
JP2002011014A (en) * 2000-06-29 2002-01-15 Fuji Photo Optical Co Ltd Resected tissue collecting tool and collecting method of the same
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105286991A (en) * 2015-10-13 2016-02-03 南方医科大学 Electric snare
CN105615948A (en) * 2016-03-09 2016-06-01 袁捷 Gastrointestinal endoscope biopsy channel operating instrument
CN112274220A (en) * 2020-10-08 2021-01-29 苏州法兰克曼医疗器械有限公司 Polyp snare for endoscopic surgery
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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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.

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