CN102920492A - Loop ligature device for minimally invasive treatment of haemorrhoids - Google Patents
Loop ligature device for minimally invasive treatment of haemorrhoids Download PDFInfo
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- CN102920492A CN102920492A CN2012105074799A CN201210507479A CN102920492A CN 102920492 A CN102920492 A CN 102920492A CN 2012105074799 A CN2012105074799 A CN 2012105074799A CN 201210507479 A CN201210507479 A CN 201210507479A CN 102920492 A CN102920492 A CN 102920492A
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Abstract
The invention relates to a loop ligature device for minimally invasive treatment of haemorrhoids. The loop ligature device is mainly gun-shaped, and comprises a left cover plate, a right cover plate, a continuous firing mechanism for continuously looping and ligaturing a focus tissue, a negative-pressure mechanism for providing continuous negative pressure for the continuous firing mechanism and a pressure release mechanism for releasing the pressure of the continuous firing mechanism, wherein the left cover plate and the right cover plate are assembled to form a gun housing, the continuous firing mechanism is arranged in a gun pipe, the negative-pressure mechanism is arranged in the barrel of a gun, the pressure release mechanism is arranged in a handle of the gun, and the pressure release mechanism and the negative-pressure mechanism are respectively communicated with the continuous firing mechanism by air pipes. According to the loop ligature device, the multiple looping and ligaturing can be realized on the larger diseased tissue, the continuity can be improved, the time can be saved, and the patient pain can be reduced.
Description
Technical field
The present invention relates to technical field of medical instruments, especially a kind of hemorrhoid minimally-invasive treatment looping and binding device.
Background technology
Hemorrhoid are a kind of chronic diseases of the vein group of the venous plexus generation varicose of anal orifice and rectal intestine bottom and anal mucosa and one or more softnesses of forming, medical science is for the Therapeutic Method of hemorrhoid now, the methods that adopt excision more, the method expense is high, the post-surgical trauma area is large, patient's hurt like hell, Given this plant reason, in clinical treatment, begin to adopt haemorrhoids ligation apparatus, this haemorrhoids ligation apparatus is to hold the hemorrhoid lesion tissue by negative pressure, then pricks with rubber ring sleeve, tissue under the rubber ring will be gradually because the blood necrosis that do not circulate comes off, finally excrete.
On the market some haemorrhoids ligation apparatus adopt the hand-held gun formula more now, and this looping and binding device is merely able to a negative pressure on earth when work, do not put in place in case lesion tissue is adsorbed, and just need again operation, have so just increased patient's psychological burden, are disadvantageous to treatment; On the other hand, traditional haemorrhoids ligation apparatus is merely able to fill a set rolling circle and overlaps bundle, can not realize the running fire function, common looping and binding device is if realize that cover is pricked continuously, must reinstall a set rolling circle and operate again, so repeatedly increase operating time, increase patient painful.
Application number is 201010611509.1 to disclose a kind of Wicresoft automatic ligation device of hemorrhoids, it comprises the rifle shell, negative pressure straw, movable ejector sleeve, pushing block, the pushing set holder, the suction nozzle holder, pushing set, suction nozzle, the negative pressure cylinder, negative-pressure handle, driving handle and relief valve, this invention has realized continuous negative pressure, only need once-through operation to suck the hemorrhoid pathological tissues in the suction nozzle fully, do not need again to operate, alleviate patient's misery, also increased simultaneously protection negative pressure eliminating device, made things convenient for the separation of lesion tissue, but should invent when cover is pricked lesion tissue, to press to realize that by driving handle the set rolling circle on the suction nozzle shifts onto on the lesion tissue, this invention can only once be overlapped the mutual aid system devised for poor peasants and be done, poor continuity, simultaneously this invention has negative-pressure handle and driving handle, and device integral body looks complicated, and structure is reasonable not, and medical personnel in when operation because can there be the situation of interfering hands in the problem of two handles, not succinctly make things convenient for.
Summary of the invention
The technical problem to be solved in the present invention is: prick the deficiency that can not realize the running fire function in order to overcome the cover of set rolling circle in the prior art, a kind of hemorrhoid minimally-invasive treatment looping and binding device is provided, it can continuous negative pressure and eliminates negative pressure, and cover is pricked and can be carried out continuously, and is convenient and swift.
The technical solution adopted for the present invention to solve the technical problems is: a kind of hemorrhoid minimally-invasive treatment looping and binding device, described looping and binding device main body is rifle shape, it comprises left cover, the right cover plate, be used for continuously cover and prick the continuous firing mechanism of lesion tissue, for the negative pressure mechanism of continuous firing mechanism continuous negative pressure be the pressure relief mechanism of continuous firing mechanism pressure release, form the rifle shell after described left cover and the assembling of right cover plate, described continuous firing mechanism is installed in the gun barrel, described negative pressure mechanism is located in the bore, described pressure relief mechanism is located in the small of the stock, and described pressure relief mechanism and negative pressure mechanism are communicated with continuous firing mechanism by trachea respectively.
Improve further, described continuous firing mechanism comprises negative pressure straw, trocar sheath, connecting rod, ratchet bar, pushing sleeve pulls out button and extension spring, described trocar sheath is inserted in the gun barrel, be positioned at the outer trocar sheath end interference fit of gun barrel pushing sleeve is arranged, described negative pressure straw is arranged in trocar sheath and the pushing sleeve, the afterbody that is positioned at the negative pressure straw of gun barrel is fixed on the rifle shell, the negative pressure straw afterbody also has an isocon, be sliding combined with the lasso cartridge in the described pushing sleeve, described lasso cartridge and negative pressure straw head are fixed, described lasso cartridge head cover has multiple rubber ring, separate by packing ring between the described multiple rubber ring, described trocar sheath root is fixedly connected with connecting rod, the connecting rod root is fixedly connected on the ratchet bar end, have continuous jagged tooth mouth on the end face of described ratchet bar afterbody, described looping and binding device gun barrel afterbody has opening, pushing sleeve pulls out button and places in the opening, pushing sleeve pulls out the button front end and is connected in the tooth mouth of ratchet bar by bearing pin, it is hinged with the ratchet bar end face that pushing sleeve pulls out the button middle part, described extension spring one end is fixed on ratchet bar and connecting rod bearing, and the extension spring other end is fixed on the gun barrel medium position place of rifle shell;
Described negative pressure mechanism comprises negative pressure cylinder, connecting rod and negative-pressure handle, described negative pressure cylinder comprises cylinder body and is located at the interior piston rod of cylinder body, described piston rod external part and connecting rod one end are hinged, the connecting rod other end and negative-pressure handle one end are hinged, described negative-pressure handle middle part is hinged on the rifle shell, and described negative pressure tail cylinder is provided with the first negative pressure connection tube and the second negative pressure connection tube;
Described pressure relief mechanism comprises one-way exhaust valve and venting button, described venting button middle part is installed with valve rod, described valve rod is plugged in the one-way exhaust valve, be provided with the stage clip that plays reset response that is sleeved on the valve rod between one-way exhaust valve and venting button, described venting button head is arranged at outside the small of the stock;
Described isocon is communicated with the first negative pressure connection tube, and the second negative pressure connection tube is communicated to the valve port of one-way exhaust valve.
Because the end face of ratchet bar is provided with continuous jagged tooth mouth, pushing sleeve pulls out the button front end and is connected in the tooth mouth of ratchet bar by bearing pin, it is hinged with the ratchet bar end face that pushing sleeve pulls out the button middle part, because extension spring is in extended state, pushing sleeve pulls out on the button and is stuck in the tooth mouth by bearing pin, limit the movement of ratchet bar, also namely limited the movement of trocar sheath, after putting several rubber rings, thumb is pressed pushing sleeve and is pulled out button, the restriction of ratchet bar is disengaged, and at this moment moves the position of a tooth mouth, because the effect of extension spring moves forward ratchet bar, thereby push away rubber ring, cover is pricked lesion tissue, and successively circulation realizes running fire.
For the ease of the operation illumination, described negative pressure straw head interference fit has LED lamp bracket cover, described LED lamp bracket cover outer wall and lasso cartridge inwall interference fit, described LED lamp bracket cover head is provided with the LED luminous tube, described small of the stock bottom arranges the cell panel of promising LED luminous tube power supply, and described cell panel bottom is provided with the LED lamp switch.
Described rubber ring has four, and four sawtooth are arranged on the described tooth mouth.Spacing between every sawtooth is set to rubber ring sleeve is pricked to lesion tissue.
The invention has the beneficial effects as follows, compared with prior art, the present invention has following advantage:
1, seriality: the present invention is by loading onto multiple rubber ring on the ejector sleeve, then by transforming the propulsion plant in the gun barrel, namely adopt ratchet bar, continuous jagged tooth mouth on the flank of tooth is opened, thumb is pressed downwards and is promoted to pull out button, make promotion pull out button and advance one by one under the effect of extension spring, whenever walk a tooth mouth, namely successfully cover is pricked a rubber ring, realize thus the running fire function, strengthen work efficiency, save time, reduce the patient suffering.
2, convenience: traditional cover is pricked and is adopted driving handle to promote trocar sheath, realize cover bundle function, and the present invention has cancelled the design of driving handle, directly by the effect of tension spring tension so that trocar sheath promote, namely realize running fire, prevented again the problem of the card hand that dual-handle design is brought, convenience improves, and outward appearance is also exquisiter simultaneously.
3, simple in structure: as to be not only and to have cancelled simple in structure that driving handle brings, and aspect gas circuit, also optimize, pressure relief mechanism only adopts one-way exhaust valve to get final product, and the one-way exhaust valve valve port only need be drawn a trachea and be received on the negative pressure cylinder, it is simple that gas circuit becomes, and effect is as before.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of hemorrhoid minimally-invasive treatment looping and binding device of the present invention;
Fig. 2 is the structural representation of ratchet bar of the present invention;
Fig. 3 is the tomograph of hemorrhoid minimally-invasive treatment looping and binding device of the present invention.
Among the figure: 1. left cover, 2. right cover plate, 3. continuous firing mechanism, 31. negative pressure straws, 311. isocon, 32. trocar sheaths, 33. connecting rods, 34. ratchet bars, 341. the tooth mouth, 35. promote to pull out button, 36. extension springs, 37. pushing sleeve, 38. lasso cartridge, 39.LED lamp bracket cover, 4. negative pressure mechanism, 41. negative pressure cylinders, 411. cylinder bodies, 412. piston rod, 413. first negative pressure connection tubes, 414. second negative pressure connection tubes, 42. connecting rod, 43. negative-pressure handle, 5. pressure relief mechanism, 51. one-way exhaust valve, 52. venting buttons, 53. stage clips, 54. valve rod, 6. rubber ring, 7. packing ring, 8. cell panel, 9.LED lamp switch, 10. fixed block.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Embodiment
With reference to figure 1 Fig. 2 Fig. 3, looping and binding device main body of the present invention is rifle shape, it comprises left cover 1, right cover plate 2, be used for continuously cover and prick the continuous firing mechanism 3 of lesion tissue, for the negative pressure mechanism 4 of continuous firing mechanism 3 continuous negative pressures be the pressure relief mechanism 5 of continuous firing mechanism 3 pressure releases, form the rifle shell after left cover 1 and 2 assemblings of right cover plate, continuous firing mechanism 3 is installed in the gun barrel, negative pressure mechanism 4 is located in the bore, pressure relief mechanism 5 is located in the small of the stock, pressure relief mechanism 5 and negative pressure mechanism 4 are communicated with continuous firing mechanism 3 by trachea respectively, continuous firing mechanism 3 comprises negative pressure straw 31, trocar sheath 32, connecting rod 33, ratchet bar 34, pushing sleeve pulls out button 35 and extension spring 36, trocar sheath 32 is inserted in the gun barrel, be positioned at the outer trocar sheath 32 end interference fit of gun barrel pushing sleeve 37 is arranged, negative pressure straw 31 is arranged in trocar sheath 32 and the pushing sleeve 37, the afterbody that is positioned at the negative pressure straw 31 of gun barrel is fixed on the rifle shell by fixed block 10, negative pressure straw 31 afterbodys also have an isocon 311, be sliding combined with lasso cartridge 38 in the pushing sleeve 37, lasso cartridge 38 is fixed with negative pressure straw 31 heads, lasso cartridge 38 head covers have 4 rubber rings 6, separate by packing ring 7 between 4 rubber rings 6, trocar sheath 32 roots are fixedly connected with connecting rod 33, connecting rod 33 roots are fixedly connected on ratchet bar 34 ends, have continuous jagged tooth mouth 341 on the end face of ratchet bar 34 afterbodys, four sawtooth are arranged on the tooth mouth 341, spacing between every sawtooth is set to enough make rubber ring sleeve to prick to lesion tissue, looping and binding device gun barrel afterbody has opening, pushing sleeve pulls out button 35 and places in the opening, pushing sleeve pulls out button 35 front ends and is connected in the tooth mouth 341 of ratchet bar 34 by bearing pin, pushing sleeve pull out button 35 middle parts and ratchet bar 34 end faces hinged, extension spring 36 1 ends are fixed on ratchet bar 34 and connecting rod 33 bearings, and extension spring 36 other ends are fixed on the gun barrel medium position place of rifle shell;
Negative pressure mechanism 4 comprises negative pressure cylinder 41, connecting rod 42 and negative-pressure handle 43, negative pressure cylinder 41 comprises cylinder body 411 and the piston rod 412 that is located in the cylinder body 411, piston rod 412 external parts and connecting rod 42 1 ends are hinged, connecting rod 42 other ends and negative-pressure handle 43 1 ends are hinged, negative-pressure handle 43 middle parts are hinged on the rifle shell, and negative pressure cylinder 41 afterbodys are provided with the first negative pressure connection tube 413 and the second negative pressure connection tube 414;
Pressure relief mechanism 5 comprises one-way exhaust valve 51 and venting button 52, venting button 52 middle parts are installed with valve rod 54, valve rod 54 is plugged in the one-way exhaust valve 51, be provided with the stage clip 53 that plays reset response that is sleeved on the valve rod 54 between one-way exhaust valve 51 and venting button 52, venting button 52 heads are arranged at outside the small of the stock;
Isocon 311 is communicated with the first negative pressure connection tube 413, and the second negative pressure connection tube 414 is communicated to the valve port of one-way exhaust valve 51.
For the ease of the operation illumination, negative pressure straw 31 head interference fit have LED lamp bracket cover 39, the LED lamp bracket overlaps 39 outer walls and lasso cartridge 38 inwall interference fit, the LED lamp bracket overlaps 39 heads and is provided with the LED luminous tube, small of the stock bottom arranges the cell panel 8 of promising LED luminous tube power supply, and cell panel 8 bottoms are provided with LED lamp switch 9.
Below set forth operation principle of the present invention, at first be that lasso cartridge 38 among the design is aimed at lesion tissue with the suction nozzle of looping and binding device, then pull continuously negative-pressure handle 43, carry out negative pressure, then thumb is pressed downwards and is promoted to pull out button 35, at this moment promotes to pull out button 35 and is rotated counterclockwise, bearing pin is pushed the most advanced and sophisticated place of sawtooth, ratchet bar 34 is owing to the effect of extension spring 36 pulling force, and the jaggy pitch of advancing forward drives connecting rod 33 and advances, and then drive trocar sheath 32 advances, the final pushing sleeve 37 that drives advances, and so just smoothly rubber ring 6 is pushed away and overlaps and prick on lesion tissue, pricks if also will continue cover, only need again press and promote to pull out button 35 and can carry out cover bundle second time, thereby realized the function that the multiple cover of a secondary looping and binding device is pricked, cover is pricked efficient and is greatly improved, and has saved material cost, manufacturing cost, behind cover ligation bundle, press venting button 52, valve rod 54 marches forward, one-way exhaust valve 51 is opened, connect with atmosphere, it is normal that air pressure recovers, and then can take off looping and binding device.
Claims (4)
1. hemorrhoid minimally-invasive treatment looping and binding device, it is characterized in that: described looping and binding device main body is rifle shape, it comprises left cover (1), right cover plate (2), be used for continuously cover and prick the continuous firing mechanism (3) of lesion tissue, for the negative pressure mechanism (4) of continuous firing mechanism (3) continuous negative pressure be the pressure relief mechanism (5) of continuous firing mechanism (3) pressure release, form the rifle shell after described left cover (1) and right cover plate (2) assembling, described continuous firing mechanism (3) is installed in the gun barrel, described negative pressure mechanism (4) is located in the bore, described pressure relief mechanism (5) is located in the small of the stock, and described pressure relief mechanism (5) and negative pressure mechanism (4) are communicated with continuous firing mechanism (3) by trachea respectively.
2. hemorrhoid minimally-invasive treatment looping and binding device as claimed in claim 1, it is characterized in that: described continuous firing mechanism (3) comprises negative pressure straw (31), trocar sheath (32), connecting rod (33), ratchet bar (34), pushing sleeve pulls out button (35) and extension spring (36), described trocar sheath (32) is inserted in the gun barrel, be positioned at outer trocar sheath (32) the end interference fit of gun barrel pushing sleeve (37) is arranged, described negative pressure straw (31) is arranged in trocar sheath (32) and the pushing sleeve (37), the afterbody that is positioned at the negative pressure straw (31) of gun barrel is fixed on the rifle shell, negative pressure straw (31) afterbody also has an isocon (311), be sliding combined with lasso cartridge (38) in the described pushing sleeve (37), described lasso cartridge (38) is fixed with negative pressure straw (31) head, described lasso cartridge (38) head cover has multiple rubber ring (6), separate by packing ring (7) between the described multiple rubber ring (6), described trocar sheath (32) root is fixedly connected with connecting rod (33), connecting rod (33) root is fixedly connected on ratchet bar (34) end, have continuous jagged tooth mouth (341) on the end face of described ratchet bar (34) afterbody, described looping and binding device gun barrel afterbody has opening, pushing sleeve pulls out button (35) and places in the opening, pushing sleeve pulls out button (35) front end and is connected in the tooth (341) of ratchet bar (34) by bearing pin, it is hinged with ratchet bar (34) end face that pushing sleeve pulls out button (35) middle part, described extension spring (36) one ends are fixed on ratchet bar (34) and connecting rod (33) bearing, and extension spring (36) other end is fixed on the gun barrel medium position place of rifle shell;
Described negative pressure mechanism (4) comprises negative pressure cylinder (41), connecting rod (42) and negative-pressure handle (43), described negative pressure cylinder (41) comprises cylinder body (411) and is located at the interior piston rod (412) of cylinder body (411), described piston rod (412) external part and connecting rod (42) one ends are hinged, connecting rod (42) other end and negative-pressure handle (43) one ends are hinged, described negative-pressure handle (43) middle part is hinged on the rifle shell, and described negative pressure cylinder (41) afterbody is provided with the first negative pressure connection tube (413) and the second negative pressure connection tube (414);
Described pressure relief mechanism (5) comprises one-way exhaust valve (51) and venting button (52), described venting button (52) middle part is installed with valve rod (54), described valve rod (54) is plugged in the one-way exhaust valve (51), be provided with the stage clip (53) that plays reset response that is sleeved on the valve rod (54) between one-way exhaust valve (51) and venting button (52), described venting button (52) head is arranged at outside the small of the stock;
Described isocon (311) is communicated with the first negative pressure connection tube (413), and the second negative pressure connection tube (414) is communicated to the valve port of one-way exhaust valve (51).
3. hemorrhoid minimally-invasive treatment looping and binding device as claimed in claim 2, it is characterized in that: described negative pressure straw (31) head interference fit has LED lamp bracket cover (39), described LED lamp bracket cover (39) outer wall and lasso cartridge (38) inwall interference fit, described LED lamp bracket cover (39) head is provided with the LED luminous tube, described small of the stock bottom arranges the cell panel (8) of promising LED luminous tube power supply, and described cell panel (8) bottom is provided with LED lamp switch (9).
4. hemorrhoid minimally-invasive treatment looping and binding device as claimed in claim 2 or claim 3, it is characterized in that: described rubber ring (6) has four, and four sawtooth are arranged on the described tooth mouth (341).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210507479.9A CN102920492B (en) | 2012-12-03 | 2012-12-03 | Loop ligature device for minimally invasive treatment of haemorrhoids |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210507479.9A CN102920492B (en) | 2012-12-03 | 2012-12-03 | Loop ligature device for minimally invasive treatment of haemorrhoids |
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| CN102920492A true CN102920492A (en) | 2013-02-13 |
| CN102920492B CN102920492B (en) | 2014-11-26 |
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| CN201210507479.9A Active CN102920492B (en) | 2012-12-03 | 2012-12-03 | Loop ligature device for minimally invasive treatment of haemorrhoids |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104127216A (en) * | 2013-09-18 | 2014-11-05 | 许瑞云 | Method for arranging elastic threads in loop ligature device and automatic elastic thread type loop ligature device |
| CN104546050A (en) * | 2014-12-25 | 2015-04-29 | 江苏安特尔医疗科技有限公司 | Progressive rubber ring launching mechanism |
| CN105030294A (en) * | 2015-09-08 | 2015-11-11 | 江苏孜航精密五金有限公司 | Disposable haemorrhoids loop ligature device |
| CN105054988A (en) * | 2015-09-08 | 2015-11-18 | 江苏孜航精密五金有限公司 | Driving device and reset securing assembly of disposable haemorrhoid loop ligaturing device |
| CN105662520A (en) * | 2016-03-16 | 2016-06-15 | 奥亿康医疗科技无锡有限公司 | Loop ligature device capable of continuously launching negative pressure to suck haemorrhoid |
| CN107028637A (en) * | 2017-05-15 | 2017-08-11 | 何利 | A kind of method that haemorrhoids ligation apparatus and its set prick hemorrhoid |
| CN108514440A (en) * | 2018-05-04 | 2018-09-11 | 薛涣洲 | Pancreas Surgical healing looping and binding device |
| CN109620339A (en) * | 2019-02-14 | 2019-04-16 | 河南省驼人医疗科技有限公司 | A kind of reusable type anal intestine looping and binding device |
| CN109646070A (en) * | 2019-02-14 | 2019-04-19 | 河南省驼人医疗科技有限公司 | A kind of reusable type anal intestine looping and binding device reducing cross-infection |
| WO2021135007A1 (en) * | 2019-12-31 | 2021-07-08 | 南微医学科技股份有限公司 | Ligation release device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104127216A (en) * | 2013-09-18 | 2014-11-05 | 许瑞云 | Method for arranging elastic threads in loop ligature device and automatic elastic thread type loop ligature device |
| CN104546050A (en) * | 2014-12-25 | 2015-04-29 | 江苏安特尔医疗科技有限公司 | Progressive rubber ring launching mechanism |
| CN105030294A (en) * | 2015-09-08 | 2015-11-11 | 江苏孜航精密五金有限公司 | Disposable haemorrhoids loop ligature device |
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| CN105662520B (en) * | 2016-03-16 | 2018-07-10 | 奥亿康医疗科技无锡有限公司 | Vacuum suction haemorrhoids ligation apparatus can continuously be emitted |
| CN105662520A (en) * | 2016-03-16 | 2016-06-15 | 奥亿康医疗科技无锡有限公司 | Loop ligature device capable of continuously launching negative pressure to suck haemorrhoid |
| CN107028637A (en) * | 2017-05-15 | 2017-08-11 | 何利 | A kind of method that haemorrhoids ligation apparatus and its set prick hemorrhoid |
| CN108514440A (en) * | 2018-05-04 | 2018-09-11 | 薛涣洲 | Pancreas Surgical healing looping and binding device |
| CN109620339A (en) * | 2019-02-14 | 2019-04-16 | 河南省驼人医疗科技有限公司 | A kind of reusable type anal intestine looping and binding device |
| CN109646070A (en) * | 2019-02-14 | 2019-04-19 | 河南省驼人医疗科技有限公司 | A kind of reusable type anal intestine looping and binding device reducing cross-infection |
| CN109620339B (en) * | 2019-02-14 | 2024-01-12 | 河南省驼人医疗科技有限公司 | Reusable anorectal ligation device |
| CN109646070B (en) * | 2019-02-14 | 2024-01-12 | 河南省驼人医疗科技有限公司 | Reusable anorectal ligation device capable of reducing cross infection |
| WO2021135007A1 (en) * | 2019-12-31 | 2021-07-08 | 南微医学科技股份有限公司 | Ligation release device |
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