CN114159124A - Adjustable twisting bolt taking device - Google Patents
Adjustable twisting bolt taking device Download PDFInfo
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- CN114159124A CN114159124A CN202111003826.XA CN202111003826A CN114159124A CN 114159124 A CN114159124 A CN 114159124A CN 202111003826 A CN202111003826 A CN 202111003826A CN 114159124 A CN114159124 A CN 114159124A
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- 208000007536 Thrombosis Diseases 0.000 claims abstract description 106
- 238000013151 thrombectomy Methods 0.000 claims description 46
- 210000004204 blood vessel Anatomy 0.000 claims description 14
- 238000013156 embolectomy Methods 0.000 claims description 9
- 241000219122 Cucurbita Species 0.000 claims description 4
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 235000014443 Pyrus communis Nutrition 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002560 therapeutic procedure Methods 0.000 abstract description 2
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- 229910052751 metal Inorganic materials 0.000 description 5
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- 230000017531 blood circulation Effects 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 208000005189 Embolism Diseases 0.000 description 2
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 2
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 210000000265 leukocyte Anatomy 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
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- 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
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
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- 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
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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Abstract
The invention belongs to the technical field of interventional therapy instruments, and particularly relates to an adjustable and controllable twisting thrombus removal device which comprises a conveying pipe, a bearing core wire, a control handle and a thrombus removal support, wherein the conveying pipe is connected with the bearing core wire; the delivery tube has a proximal delivery end and a distal delivery end; the bearing core wire is inserted in the conveying pipe and is provided with a core wire near end extending out of the conveying near end and a core wire far end extending out of the conveying far end; the control handle is provided with a control button, and the control button is connected with the proximal end of the core wire and used for displacing the bearing core wire; the thrombus taking support surrounds the outer side of the bearing core wire, one end of the thrombus taking support is connected with the far end of the core wire, and the other end of the thrombus taking support is connected with the conveying far end and is used for expanding and twisting to wrap thrombus when the bearing core wire displaces. The invention can realize the control of the thrombus taking support, and control the expansion of the thrombus taking support and the size of meshes in thrombus taking, thereby improving the thrombus catching effect and reducing the risk of thrombus escape.
Description
Technical Field
The invention belongs to the technical field of interventional therapy instruments, and particularly relates to an adjustable and controllable twisting thrombus removal device.
Background
Thrombi are small patches of blood flow that form on the surface of a denuded or repaired site within a blood vessel of the cardiovascular system. Thrombi consist of insoluble fibrin, deposited platelets, accumulated white blood cells and entrapped red blood cells.
In the prior art, there are many thrombus taking devices, for example, patent application No. 201620535171.9, 2016, 6.6.2016, which discloses a thrombus taking device with sparse mesh at the head end and dense mesh at the tail end; in patent application documents with the application number of 201710170254.1, the application date of 2017, 3, and 21, the invention provides a thrombus removal bracket and a thrombus removal device, and discloses a thrombus removal device which comprises two types of meshes, namely a large mesh and a small mesh, wherein the two types of meshes are distributed in a staggered manner; in patent application No. 201720231839.5 filed on 3/10/2017 entitled thrombectomy stent system, the patent application discloses a stent system with a rolled thrombectomy stent.
In the prior art, especially in the above examples, the meshes of the thrombus taking support are uncontrollable when the thrombus is grabbed, and the defects of poor thrombus grabbing effect and large thrombus escape risk are caused.
Disclosure of Invention
In order to solve the problems, the invention provides an adjustable and controllable twisting bolt taking device, which adopts the following technical scheme:
an adjustable twisting thrombus removal device comprises a conveying pipe, a bearing core wire, an operation handle and a thrombus removal bracket; the delivery tube has a proximal delivery end and a distal delivery end; the bearing core wire is inserted in the conveying pipe and is provided with a core wire near end extending out of the conveying near end and a core wire far end extending out of the conveying far end; the control handle is provided with a control button, and the control button is connected with the proximal end of the core wire and used for displacing the bearing core wire; the thrombus removal support surrounds the outer side of the bearing core wire, one end of the thrombus removal support is connected with the distal end of the core wire, and the other end of the thrombus removal support is connected with the conveying distal end and is used for expanding and twisting during axial translation displacement and/or axial torsion displacement of the bearing core wire so as to wrap thrombus.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: along the length direction of the bearing core wire, a spiral guide mark is arranged on the bearing core wire close to the far end of the core wire, and the axis of the guide mark is superposed with the axis of the bearing core wire; the conveying far end is provided with a guide port in sliding fit with the guide mark; the operating button is connected with the proximal end of the core wire and used for moving the bearing core wire along the length direction of the bearing core wire.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the control button is in sliding fit with the control handle and is fixedly connected with the proximal end of the core wire.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the control knob is rotatably connected with the control handle, a straight gear is arranged on the control knob, a rack is arranged on the proximal end of the core wire, and the straight gear is meshed with the rack.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the control button is hinged with the control handle, one end of the control button is a connecting end and is connected with the proximal end of the core wire, and the other end of the control button is a control end and is used for controlling.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: and the conveying pipe is provided with a limiting wall, and the limiting wall is used for limiting the sliding of the bearing core wire.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the guide marks are spiral protrusions on the bearing core wire along the length direction, and guide grooves matched with the spiral protrusions are formed in the guide openings.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the guide marks are spiral grooves along the length direction of the bearing core wire, and guide blocks matched with the spiral grooves are arranged on the guide openings.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the control knob is rotatably connected with the control handle, a first bevel gear is mounted on the control knob, and the axis of the first bevel gear is overlapped with the axis of the control knob; a second bevel gear is arranged at the proximal end of the core wire, and the axis of the second bevel gear is overlapped with the axis of the bearing core wire; the first bevel gear is meshed with the second bevel gear.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the bearing core wire comprises a core wire and a core tube, and the core wire is inserted into the core tube; the control knob comprises a first control knob and a second control knob; the first control button is connected with the core wire and used for controlling the expansion of the embolectomy bracket; and the second control button is connected with the core tube and is used for controlling the twisting of the thrombus removal support.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the core tube is provided with a corrugated tube section in the range which is close to the far end of the core wire and surrounded by the embolectomy bracket; the pitch of the bellows segment increases gradually in a direction from the distal delivery end to the distal core wire end.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the thrombus taking support is provided with a connecting sleeve, the connecting sleeve is positioned between two ends of the thrombus taking support, is in sliding fit with the bearing core wire and is used for dividing the thrombus taking support into a plurality of sections capable of twisting and wrapping thrombus.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the connecting sleeves are multiple and arranged at equal intervals.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the length range of the connecting sleeve is 0.3mm to 1.5mm, and the outer diameter range is 0.3mm to 0.7 mm; the connecting sleeve is made of developing materials.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the thrombus taking support is in any one of an ellipsoid shape, a spindle shape, a rugby shape, a bulb shape, a gourd shape, a pear shape and a dumbbell shape or a combination thereof.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the thrombus removal support comprises a plurality of twisted silk threads, and developing marks are arranged on the silk threads.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the single thread is a developing thread and the plurality of threads are developing threads.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the core wire far end is provided with a net bag, the net bag is movably connected with the core wire far end and can stretch along the length direction of the bearing core wire, and the opening faces the conveying far end and is used for preventing thrombus from escaping.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the net bag is any one of umbrella shape, plug shape and drop shape.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the far end of the core wire is provided with an introducing wire, one end of the introducing wire is connected with the far end of the core wire, and the other end of the introducing wire is a free end; the introduction wire is helical in the length direction of the bearing core wire and is used for extending into a blood vessel.
The adjustable and controllable twisting thrombectomy device as described above, more preferably: the delivery tube is provided with a flexible section near the distal delivery end; the flexible section is of a spring type structure or a corrugated pipe type structure.
Analysis shows that compared with the prior art, the invention has the advantages and beneficial effects that:
the invention provides a new idea of bolt taking, and the adjustable torsion bolt taking device controls the displacement of a bearing core wire through a control button so as to realize the control of a bolt taking bracket. When the thrombus is taken, the thrombus taking support can be expanded and twisted for a certain angle by twisting the thrombus taking support, so that the size of meshes of the thrombus taking support is controlled, the thrombus and the thrombus taking support form an embedded structure, the thrombus capturing effect is improved, and the risk of thrombus escape is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention.
Fig. 2 is a first connection diagram of a first embodiment of the present invention.
Fig. 3 is a connection diagram of the first embodiment of the present invention.
Fig. 4 is a third connection diagram according to a first embodiment of the present invention.
Fig. 5 is a schematic view illustrating the connection of the string bag according to the present invention.
Fig. 6 is a schematic overall structure diagram of a second embodiment of the present invention.
Fig. 7 is a schematic connection diagram of a second embodiment of the present invention.
Fig. 8 is a schematic overall structure diagram of a third embodiment of the present invention.
Fig. 9 is a schematic connection diagram of a third embodiment of the present invention.
FIG. 10 is a first block diagram illustrating a block structure according to the present invention.
FIG. 11 is a second block diagram of the present invention.
FIG. 12 is a third schematic structural diagram of a segment according to the present invention.
FIG. 13 is a fourth block diagram of the present invention.
FIG. 14 is a first schematic view of the adjustable twisting device for removing thrombus according to the present invention.
FIG. 15 is a second schematic view of the adjustable twisting device for removing thrombus according to the present invention.
FIG. 16 is a third schematic view of the adjustable twisting device for removing thrombus.
In the figure: 1-a control handle; 2-operating the button; 3-carrying core wire; 4-a conveying pipe; 5-thrombus taking support; 6-introducing silk; 7-a limiting wall; 8-segment; 9-connecting sleeves; 10-guide marking; 11-a stop block; 12-development marking; 13-a net bag; 14-a first control button; 15-a second control button; 16-core filament; 17-core tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 16, fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention; FIG. 2 is a first connection diagram according to a first embodiment of the present invention; FIG. 3 is a connection diagram II according to a first embodiment of the present invention; FIG. 4 is a third schematic connection diagram according to a first embodiment of the present invention; FIG. 5 is a schematic view showing the connection of the string bag according to the present invention;
FIG. 6 is a schematic view of the overall structure of a second embodiment of the present invention; FIG. 7 is a schematic connection diagram of a second embodiment of the present invention; FIG. 8 is a schematic diagram of the overall structure of a third embodiment of the present invention; FIG. 9 is a schematic connection diagram of a third embodiment of the present invention; FIG. 10 is a first block diagram illustrating the structure of a segment according to the present invention; FIG. 11 is a second block diagram illustrating the structure of a segment according to the present invention; FIG. 12 is a third schematic view of a segment according to the present invention; FIG. 13 is a fourth block diagram illustrating the structure of the segments of the present invention; FIG. 14 is a first schematic view of a controllable twisting device for removing emboli according to the present invention; FIG. 15 is a second schematic view of the adjustable twisting device for removing embolus of the present invention; FIG. 16 is a third schematic view of the adjustable twisting device for removing thrombus. Wherein, FIG. 14 is an initial state of the thrombectomy support; FIG. 15 is a schematic illustration of the thrombectomy stent during expansion; FIG. 16 is a schematic view of the thrombectomy stent after twisting.
The invention provides an adjustable and controllable twisting thrombus removal device which mainly comprises a conveying pipe 4, a bearing core wire 3, an operation handle 1 and a thrombus removal support 5. Specifically, the conveying pipe 4 has a conveying near end and a conveying far end, and the bearing core wire 3 is inserted in the conveying pipe 4 and has a core wire near end extending out of the conveying near end and a core wire far end extending out of the conveying far end. The control handle 1 is provided with a control button 2, the control button 2 is connected with the near end of the core wire, the bearing core wire 3 can be controlled, and the bearing core wire 3 can be axially translated and/or axially twisted in the conveying pipe 4. The thrombus taking bracket 5 surrounds the outer side of the bearing core wire 3, one end of the thrombus taking bracket is connected with the distal end of the core wire, and the other end of the thrombus taking bracket is connected with the conveying distal end, so that the thrombus taking bracket can expand and twist to wrap thrombus when the bearing core wire 3 displaces.
The invention provides a new idea of taking thrombus, which controls the displacement of a bearing core wire 3 by a control button 2 so as to control a thrombus taking bracket 5 (the expansion and the torsion of the thrombus taking bracket 5). When in thrombus removal, the thrombus removal support 5 is arranged at the position where thrombus exists in the blood vessel, and the thrombus removal support 5 is in a contraction state in an initial state and spirally covers the bearing core wire 3. When beginning to get the bolt, through the displacement that bears core wire 3, make earlier and get the expansion of bolt support 5, when getting the expansion of bolt support 5, can follow the direction cutting thrombus of spiral to form great shearing force, the cutting of the thrombus of being convenient for (prior art is radial inflation, and the cutting force is little), and, along spiral direction cutting thrombus, it is more firm to snatching of thrombus, can reduce the escape of thrombus. After the thrombus is collected, the thrombus taking support 5 is twisted by the displacement of the bearing core wire 3, so that meshes are reduced (the thrombus taking support 5 can be twisted by a certain angle, such as 30 degrees, 60 degrees, 90 degrees, 120 degrees, 150 degrees, 180 degrees, 210 degrees, 240 degrees, 270 degrees, 300 degrees, 330 degrees, 360 degrees and the like, through twisting the thrombus taking support 5, the size of the meshes of the thrombus taking support 5 is controlled), the thrombus and the thrombus taking support 5 form an embedded structure, the thrombus capturing effect is improved, and the thrombus escape risk is reduced. After the thrombus is wrapped, the thrombus can be taken out of the blood vessel through the withdrawing delivery pipe 4, the bearing core wire 3 and the thrombus taking support 5, so that the function of dredging the blocked blood vessel is realized. When the expansion and torsion of the bolt taking bracket 5 are controlled by the displacement of the bearing core wire 3, the bolt taking bracket can have various control forms, for example, when the expansion of the bolt taking bracket 5 is controlled by reducing the clearance between the far end of the core wire and the far end of the conveying, the expansion can be realized by only controlling the axial translation (translation displacement) of the bearing core wire 3; when the torsion of the bolt support 5 is controlled by rotating the bearing core wire 3, the torsion can be realized by only controlling the axial torsion (rotational displacement) of the bearing core wire 3; the expansion of the thrombectomy stent 5 can be controlled by rotating the load-bearing core wire 3, and the load-bearing core wire 3 can be rotated in the direction opposite to the spiral direction when the thrombectomy stent 5 is in the contracted state.
In the invention, the shape of the embolectomy support 5 can be any one of an ellipsoid shape, a spindle shape, a rugby shape, a bulb shape, a gourd shape, a pear shape and a dumbbell shape or a combination thereof. The embolectomy support 5 may be integrally formed or may be divided into a plurality of twistable sections 8 along its length.
In one embodiment of the present invention, the thrombectomy stent 5 is provided with a connecting sleeve 9, and the connecting sleeve 9 is located between two ends of the thrombectomy stent 5 and is in sliding fit with the bearing core wire 3, so as to divide the thrombectomy stent 5 into a plurality of sections 8 capable of twisting and wrapping thrombi. The connecting sleeve 9 is in clearance fit with the bearing core wire 3, can slide along the length direction of the bearing core wire 3, and can also twist along the axial direction of the bearing core wire 3. When the thrombectomy support 5 is expanded, the connecting sleeve 9 does not expand, and the thrombectomy support 5 can be divided into a plurality of sections 8, for example, like a candied gourd. When bearing the weight of core silk 3 and twisting, the twisting power direction that receives is different at the both ends of getting bolt support 5 (the one end that links to each other with the core silk distal end, the one end that links to each other with carrying the distal end) to get bolt support 5 wholly can take place to twist (by core silk distal end to carrying the distal end direction), and adapter sleeve 9 is located and gets bolt support 5, can transmit the twisting power, thereby makes a plurality of sections 8 can both be by twist control.
Further, in the above-described possible embodiment, the length of the connection sleeve 9 ranges from 0.3mm to 1.5mm, and the outer diameter ranges from 0.3mm to 0.7 mm. The connecting sleeve 9 is made of developing materials, such as platinum-iridium alloy, platinum-tungsten alloy, tantalum and the like, which have excellent developing performance, and can not only separate the bolt taking support 5, but also play a developing role and mark the position of the bolt taking support 5. Preferably, the connecting sleeves 9 are provided in plurality, and the plurality of connecting sleeves 9 are arranged at equal intervals, so that the lengths of the plurality of sections 8 can be controlled to be substantially the same. Of course, as another possible embodiment, the connecting sleeves 9 may also be arranged at unequal intervals to separate the sections 8 with different sizes.
In the present invention, the thrombectomy stent 5 comprises a plurality of twisted wires, and various development protocols are provided for the present invention to facilitate development. Specifically, firstly, the silk thread is provided with a developing mark 12, and the silk thread is developed through the developing mark 12; secondly, the single silk thread is a developing silk thread through which development is carried out; thirdly, a plurality of silk threads are developing silk threads, and the bolt taking bracket 5 can be integrally made of developing materials.
As an alternative embodiment, in the present invention, the embolectomy stent 5 may be woven or laser engraved. When the thrombus taking support 5 is formed by weaving metal wires, single-strand wires can be adopted for weaving or 2-5 strands of wires can be wound and then woven. The metal wire can be made of nickel-titanium alloy, platinum core nickel-titanium composite wire, platinum wire and the like, can be developed well, has a shape memory function, and can be woven by adopting a single metal wire or a plurality of metal wires. The wire diameter preferably ranges from 0.05mm to 0.12mm, and the number of strands may alternatively range from 6 to 30, for example, typical numbers of strands are 8, 12, 16, with various mesh structures being formed by different cross-braiding. When the thrombectomy support 5 is laser-engraved, the width of the tendon (tendon is equivalent to the metal wire when weaving) of the thrombectomy support 5 is preferably 0.04mm to 0.12mm, and the thickness is preferably 0.03mm to 0.10 mm.
In the invention, when the thrombus is twisted and embedded into the thrombus, the thrombus can be broken, the broken thrombus can flow to a deeper part of the blood vessel under the drive of blood flow, and further secondary blockage of the blood vessel can be caused, in order to further reduce the risk of thrombus escape, the far end of the core wire is provided with the net bag 13, the meshes of the net bag 13 are more compact than those of the thrombus taking support 5, and the net bag 13 is movably connected with the far end of the core wire, for example, two ends of the net bag 13 can be sleeved on the bearing core wire 3 and is in clearance fit with the bearing core wire 3, and does not rotate along with the twisting of the bearing core wire 3, but can be stretched along the length direction of the bearing core wire 3, and the opening faces to the conveying far end, so that the thrombus which can possibly escape from the thrombus taking support 5 can be collected, two defense lines are constructed, thrombus escape is prevented, and the blood flow is ensured to be still unobstructed. As an implementable example, in the present invention, the shape of the string bag 13 may be an umbrella shape, a plug shape, a drop shape, or the like.
In the invention, in order to improve the passing capacity at the tortuous blood vessels, the far end of the core wire is provided with the lead-in wire 6, one end of the lead-in wire 6 is connected with the far end of the core wire, and the other end is a free end. The lead-in wire 6 is spiral in the length direction of the bearing core wire 3, can be easily bent in the axial direction, and can be extended into a blood vessel as a head end when entering the blood vessel, so that the lead-in wire can conveniently advance in the blood vessel. The lead-in wire 6 can be made of platinum-tungsten alloy or platinum-iridium alloy wire and is formed into a spiral shape, and the overall length is 5mm to 15 mm; the diameter of the spiral is 0.2mm to 0.5 mm; the wire diameter is 0.03mm to 0.06 mm.
Meanwhile, in the invention, the delivery pipe 4 is provided with a flexible section near the distal delivery end, the flexible section is of a spring type structure or a corrugated pipe type structure, the flexible section is convenient to travel at a tortuous position of a blood vessel, and no obvious buckling force is formed on the inner wall of the blood vessel. In the invention, the flexible section and the bolt taking bracket 5 can be in an integrated structure or a split structure and are formed by assembling and splicing. As an alternative, the flexible segments may be formed by wire winding or by laser engraving, and the structural form may be a spring-loaded helical form.
In the invention, the rotation of the bearing core wire 3 is controlled by the operating button 2 to realize the operation and control of the bolt taking bracket 5, the control degrees of the operating button 2 are different, the states of the bolt taking bracket 5 are different, and when the bolt taking bracket is controlled, the invention provides various implementable schemes:
in the first scheme, the control button 2 controls the thrombus removal support 5 by pushing and pulling the bearing core wire 3.
In the scheme, along the length direction of the bearing core wire 3, the bearing core wire 3 is provided with a spiral guide mark 10 close to the far end of the core wire, and the axis of the guide mark 10 is superposed with the axis of the bearing core wire 3; the delivery distal end is provided with a guide port which is in sliding fit with the guide mark 10. The operating button 2 is connected with the proximal end of the core wire and can move (push and pull) the bearing core wire 3 along the length direction of the bearing core wire 3. When the bearing core wire 3 is pushed and pulled, the bearing core wire 3 and the conveying pipe 4 are relatively displaced, and when the bearing core wire 3 is displaced, the guide mark 10 is limited by the guide opening and can only pass through the guide opening, so that the bearing core wire 3 is not only translated along the length direction, but also forced to rotate at the guide opening, and further the bolt taking support 5 is driven to twist. The torsion degree of the bolt bracket 5 can be controlled by controlling the displacement of the bearing core wire 3.
When the control button 2 controls the axial displacement of the bearing core wire 3, the thrombus removal support 5 realizes expansion (the distance between the far end of the conveying end and the far end of the core wire is reduced to promote the expansion of the thrombus removal support 5) and spiral type torsion (the bearing core wire 3 is axially twisted relative to the conveying pipe 4) under the action of the two ends (the far end of the conveying end and the far end of the core wire). As a specific implementation structure, the thrombus taking bracket 5 is integrally connected with the far end of the conveying device, a stop block 11 is arranged at the far end of the core wire, and the stop block 11 is integrally connected with the bearing core wire 3. Between dog 11 and the support 5 of taking the bolt, can be connected as an organic whole, the support 5 of taking the bolt along with bearing the weight of core silk 3 synchronous torsion promptly, also can be split type connection, dog 11 only plays axial limiting displacement promptly.
As an implementable means, in the present scheme, the guiding mark 10 may be a spiral protrusion on the load-bearing core wire 3 along the length direction, and a guiding groove matched with the spiral protrusion is arranged on the guiding opening; the guide mark 10 may also be a spiral groove along the length direction on the bearing core wire 3, and a guide block matched with the spiral groove is arranged on the guide port. Whether it is a spiral protrusion or a spiral groove, the cross section may have various forms, such as circular arc, parabolic shape, quadrilateral shape, triangular shape, etc.
In order to prevent the potential safety hazard that the thrombectomy support 5 can be excessively twisted, the conveying pipe 4 is provided with a limiting wall 7 which can limit the sliding of the bearing core wire 3. Specifically, the carrier core wire 3 is thickened in the length direction in which the guide marks 10 are provided, and the limiting wall 7 on the conveying pipe 4 can allow the part of the carrier core wire 3 which is not thickened to pass through but cannot allow the part which is thickened to pass through. When the thickened portion abuts against the stop wall 7, i.e. the maximum sliding displacement of the load-bearing core wire 3 is reached, the bolt removal holder 5 cannot be twisted any further, so that it is ensured that the bolt removal holder 5 is not damaged.
Further, in this scheme, control button 2 can realize bearing core silk 3 controlling through multiple mode. Firstly, the control knob 2 is in sliding fit with the control handle 1 and is fixedly connected with the proximal end of the core wire, and the bearing core wire 3 can be pushed and pulled by pushing and pulling the control knob 2; secondly, the control knob 2 is rotatably connected with the control handle 1, one of a plurality of tangent lines is parallel to the bearing core wire 3 during rotation, a straight gear is arranged on the control knob 2, a rack is arranged on the proximal end of the core wire, the length direction of the rack is consistent with that of the bearing core wire 3, the straight gear is meshed with the rack, and the bearing core wire 3 can be pushed and pulled by rotating the control knob 2; and thirdly, the control button 2 is hinged with the control handle 1, one end of the two ends of the hinged joint is a connecting end and is connected with the proximal end of the core wire, and the other end of the two ends of the hinged joint is a control end and is used for manual control during use. When the bearing core wire 3 is pushed and pulled, the control end can be pressed, and the control button 2 rotates along the hinged part, so that the near end of the core wire is pulled, and the bearing core wire 3 is pushed and pulled.
And in the second scheme, the operating button 2 directly rotates the bearing core wire 3 to realize the control of the bolt taking bracket 5.
In this scheme, control button 2 and the rotatable connection of control handle 1, install first bevel gear on the control button 2, the axis of first bevel gear and the axis coincidence of controlling button 2. A second bevel gear is arranged on the proximal end of the core wire, and the axis of the second bevel gear is coincided with the axis of the bearing core wire 3. The first bevel gear is meshed with the second bevel gear. When the bearing core wire 3 is rotated, the first bevel gear can be driven to rotate by rotating the control button 2, and the second bevel gear meshed with the first bevel gear synchronously rotates, so that the purpose of directly controlling the bearing core wire 3 to rotate is achieved. In the scheme, the tooth ratio of the first bevel gear to the second bevel gear can be 1:1, so that the accurate control of the torsion angle of the bearing core wire 3 is realized; the gear ratio of the first bevel gear and the second bevel gear can also adopt other ratios, thereby achieving the purposes of speed increasing or speed reducing. It should be noted that the speed increasing means that the angular speed of the torsion of the carrier core wire 3 is greater than the angular speed of the rotation of the operation knob 2, and the speed decreasing means that the angular speed of the torsion of the carrier core wire 3 is less than the angular speed of the rotation of the operation knob 2.
And in the third scheme, the control button 2 realizes the control of the thrombus removal support 5 through composite control.
In the present embodiment, the load-bearing core wire 3 includes a core wire 16 and a core tube 17, the core wire 16 is inserted into the core tube 17, and the control knob 2 includes a first control knob 14 and a second control knob 15. Specifically, the first control knob 14 is connected to the core wire 16, and can control the expansion of the plug support 5; the second control knob 15 is connected to the core tube 17 and controls the turning of the plug holder 5. In this solution, the expansion and torsion of the thrombectomy stent 5 can be controlled independently. Pressing the first control button 14, the core wire 16 is pulled so that the distance between the distal end of the core wire and the distal delivery end is changed, and the overall expansion of the embolus stent 5 can be controlled; the second control button 15 is pressed, the core tube 17 acts to control the torsion of the bolt taking bracket 5, and the torsion angle of the bolt taking bracket 5 can be controlled.
Further, in the present embodiment, when the first control knob 14 controls the core wire 16 to translate, any one of the control manners in the first embodiment may be adopted; when the second control knob 15 controls the core tube 17 to rotate (or twist), any one of the first and second schemes can be adopted.
Furthermore, in order to simplify the structure, in the present embodiment, a more concise control mode is provided, which can simplify the control of the core tube 17 by the second control knob 15. Specifically, a stopper 11 is provided at a free end (distal end) of the core wire 16 to limit the axial displacement of the core tube 17. The core tube 17 is provided with a corrugated tube section in the range which is close to the distal end of the core wire and surrounded by the embolectomy stent 5; the pitch of the bellows segment increases gradually in the direction from the delivery distal end to the distal end of the core wire. When the second control knob 15 pulls the core tube 17, the part of the bellows with the smaller pitch becomes thinner under the action of the pulling force, and the part of the bellows with the larger pitch is subjected to a radial unbalance force and is twisted under the action of the radial unbalance force, so that the bolt taking support 5 is driven to be twisted. In the control scheme, the control of the core wire 16 by the first control knob 14 and the control of the core tube 17 by the second control knob 15 are both control on axial translation, so that the structural form can be simplified.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. An adjustable torsion embolectomy device, comprising:
the device comprises a conveying pipe, a bearing core wire, a control handle and a bolt taking bracket;
the delivery tube has a proximal delivery end and a distal delivery end;
the bearing core wire is inserted in the conveying pipe and is provided with a core wire near end extending out of the conveying near end and a core wire far end extending out of the conveying far end;
the control handle is provided with a control button, and the control button is connected with the proximal end of the core wire and used for displacing the bearing core wire;
the thrombus taking support surrounds the outer side of the bearing core wire, one end of the thrombus taking support is connected with the far end of the core wire, and the other end of the thrombus taking support is connected with the conveying far end and is used for expanding and twisting to wrap thrombus when the bearing core wire displaces.
2. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
along the length direction of the bearing core wire, a spiral guide mark is arranged on the bearing core wire close to the far end of the core wire, and the axis of the guide mark is superposed with the axis of the bearing core wire;
the conveying far end is provided with a guide port in sliding fit with the guide mark;
the operating button is connected with the proximal end of the core wire and used for moving the bearing core wire along the length direction of the bearing core wire.
3. The adjustable and controllable torsional thrombectomy device of claim 2, wherein:
the control button is in sliding fit with the control handle and is fixedly connected with the proximal end of the core wire; or
The control knob is rotatably connected with the control handle, a straight gear is arranged on the control knob, a rack is arranged on the proximal end of the core wire, and the straight gear is meshed with the rack; or
The control button is hinged with the control handle, one end of the control button is a connecting end and is connected with the proximal end of the core wire, and the other end of the control button is a control end and is used for controlling.
4. The adjustable and controllable torsional thrombectomy device of claim 2, wherein:
the conveying pipe is provided with a limiting wall, and the limiting wall is used for limiting the sliding of the bearing core wire;
the guide marks are spiral protrusions on the bearing core wire along the length direction, and guide grooves matched with the spiral protrusions are formed in the guide openings; or
The guide marks are spiral grooves along the length direction of the bearing core wire, and guide blocks matched with the spiral grooves are arranged on the guide openings.
5. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
the control knob is rotatably connected with the control handle, a first bevel gear is mounted on the control knob, and the axis of the first bevel gear is overlapped with the axis of the control knob;
a second bevel gear is arranged at the proximal end of the core wire, and the axis of the second bevel gear is overlapped with the axis of the bearing core wire;
the first bevel gear is meshed with the second bevel gear.
6. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
the bearing core wire comprises a core wire and a core tube, and the core wire is inserted into the core tube;
the control knob comprises a first control knob and a second control knob;
the first control button is connected with the core wire and used for controlling the expansion of the embolectomy bracket;
and the second control button is connected with the core tube and is used for controlling the twisting of the thrombus removal support.
7. The adjustable and controllable torsional thrombectomy device of claim 6, wherein:
the core tube is provided with a corrugated tube section in the range which is close to the far end of the core wire and surrounded by the embolectomy bracket;
the pitch of the bellows segment increases gradually in a direction from the distal delivery end to the distal core wire end.
8. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
the thrombus taking support is provided with a connecting sleeve, the connecting sleeve is positioned between two ends of the thrombus taking support, is in sliding fit with the bearing core wire and is used for dividing the thrombus taking support into a plurality of sections which can twist and wrap thrombus;
the number of the connecting sleeves is multiple, and the connecting sleeves are arranged at equal intervals;
the length range of the connecting sleeve is 0.3mm to 1.5mm, and the outer diameter range is 0.3mm to 0.7 mm;
the connecting sleeve is made of developing materials.
9. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
the thrombus taking support is in any one of an ellipsoid shape, a spindle shape, a rugby shape, a bulb shape, a gourd shape, a pear shape and a dumbbell shape or a combination thereof;
the thrombus removal support comprises a plurality of twisted silk threads, and developing marks are arranged on the silk threads; or
The single thread is a developing thread and the plurality of threads are developing threads.
10. The adjustable and controllable torsional thrombectomy device of claim 1, wherein:
the far end of the core wire is provided with a net bag which is movably connected with the far end of the core wire and can be stretched along the length direction of the bearing core wire, and an opening faces the conveying far end and is used for preventing thrombus from escaping;
the net bag is any one of an umbrella shape, a plug shape and a water drop shape;
the far end of the core wire is provided with an introducing wire, one end of the introducing wire is connected with the far end of the core wire, and the other end of the introducing wire is a free end;
the leading-in wire is spiral in the length direction of the bearing core wire and is used for extending into a blood vessel;
the delivery tube is provided with a flexible section near the distal delivery end;
the flexible section is of a spring type structure or a corrugated pipe type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003826.XA CN114159124A (en) | 2021-08-30 | 2021-08-30 | Adjustable twisting bolt taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003826.XA CN114159124A (en) | 2021-08-30 | 2021-08-30 | Adjustable twisting bolt taking device |
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| Publication Number | Publication Date |
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| CN114159124A true CN114159124A (en) | 2022-03-11 |
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| CN202111003826.XA Pending CN114159124A (en) | 2021-08-30 | 2021-08-30 | Adjustable twisting bolt taking device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108904008A (en) * | 2018-08-14 | 2018-11-30 | 上海微密医疗科技有限公司 | A kind of controllable cerebrovascular takes bolt bracket and transport control system |
| CN112168285A (en) * | 2020-11-16 | 2021-01-05 | 杭州诺礼医疗器械有限公司 | Thrombus taking device and thrombus taking system |
| CN112438777A (en) * | 2019-08-28 | 2021-03-05 | 尤东侠 | Minimally invasive thrombus extraction device for treating vascular embolism |
| CN112617966A (en) * | 2020-12-31 | 2021-04-09 | 杭州唯强医疗科技有限公司 | Thrombus taking device |
| CN112674835A (en) * | 2020-12-07 | 2021-04-20 | 上海璞慧医疗器械有限公司 | Thrombus taking device |
| CN112890915A (en) * | 2020-12-30 | 2021-06-04 | 上海融脉医疗科技有限公司 | Intravascular multi-segment embolectomy support and conveying device thereof |
| WO2021136350A1 (en) * | 2019-12-30 | 2021-07-08 | 杭州德诺脑神经医疗科技有限公司 | Thrombus retrieving stent and thrombus retrieving system |
| CN213641088U (en) * | 2018-02-26 | 2021-07-09 | 上海加奇生物科技苏州有限公司 | Intravascular thrombus capture device |
| CN215534807U (en) * | 2021-08-30 | 2022-01-18 | 北京泰杰伟业科技有限公司 | Adjustable twisting bolt taking device |
-
2021
- 2021-08-30 CN CN202111003826.XA patent/CN114159124A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213641088U (en) * | 2018-02-26 | 2021-07-09 | 上海加奇生物科技苏州有限公司 | Intravascular thrombus capture device |
| CN108904008A (en) * | 2018-08-14 | 2018-11-30 | 上海微密医疗科技有限公司 | A kind of controllable cerebrovascular takes bolt bracket and transport control system |
| CN112438777A (en) * | 2019-08-28 | 2021-03-05 | 尤东侠 | Minimally invasive thrombus extraction device for treating vascular embolism |
| WO2021136350A1 (en) * | 2019-12-30 | 2021-07-08 | 杭州德诺脑神经医疗科技有限公司 | Thrombus retrieving stent and thrombus retrieving system |
| CN112168285A (en) * | 2020-11-16 | 2021-01-05 | 杭州诺礼医疗器械有限公司 | Thrombus taking device and thrombus taking system |
| CN112674835A (en) * | 2020-12-07 | 2021-04-20 | 上海璞慧医疗器械有限公司 | Thrombus taking device |
| CN112890915A (en) * | 2020-12-30 | 2021-06-04 | 上海融脉医疗科技有限公司 | Intravascular multi-segment embolectomy support and conveying device thereof |
| CN112617966A (en) * | 2020-12-31 | 2021-04-09 | 杭州唯强医疗科技有限公司 | Thrombus taking device |
| CN215534807U (en) * | 2021-08-30 | 2022-01-18 | 北京泰杰伟业科技有限公司 | Adjustable twisting bolt taking device |
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Address after: 101200 Building 4, Yard 21, Panlong West Road, Mafang Town, Pinggu District, Beijing Applicant after: Beijing Taijieweiye Technology Co.,Ltd. Address before: 101200 building 4, courtyard 21, Panlong West Road, Pufeng medical innovation Valley, Mafang Town, Pinggu District, Beijing Applicant before: BEIJING TAIJIE WEIYE TECHNOLOGY Co.,Ltd. |