CN112024774B - Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube - Google Patents
Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube Download PDFInfo
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- CN112024774B CN112024774B CN202011226886.3A CN202011226886A CN112024774B CN 112024774 B CN112024774 B CN 112024774B CN 202011226886 A CN202011226886 A CN 202011226886A CN 112024774 B CN112024774 B CN 112024774B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
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Abstract
The invention discloses anti-folding wire winding equipment of an anti-folding sheath tube and a production method of the anti-folding sheath tube, wherein the equipment comprises an equipment main body, a winding device and a winding device, wherein the equipment main body is provided with two box bodies, two clamping pieces are correspondingly arranged on two corresponding side surfaces of the two box bodies respectively, and the two clamping pieces are used for clamping a core rod provided with an inner-layer sheath tube; the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through; the control slide block is slidably arranged on the first track; the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape; the anti-broken wire mounting seat is slidably mounted on the second rail; when two holder centre gripping inlayer sheath pipes rotated, control slider and anti silk mount pad can slide in coordination along first track and second track respectively to twine anti silk in inlayer sheath pipe in order. It can twine anti silk in the inner sheath of sheath pipe fast, can improve the production efficiency and the machining precision of sheath pipe.
Description
Technical Field
The invention relates to the field of medical treatment, and further relates to anti-bending filament winding equipment of an anti-bending sheath and a production method of the anti-bending sheath.
Background
The endovascular intervention technology is to apply selective or super-selective angiography, to determine the location, property, range and degree of lesion, and to perform embolization, endovascular angioplasty, drug perfusion and other treatments via a catheter inserted into the blood vessel according to the indication. With intravascular interventional techniques, a wide variety of materials, instruments and drugs can be placed into the heart and arteriovenous vessels of the human body. For example, transseptal needles, valve repair devices, heart occluders, vascular plugs, vascular filters, and the like may be placed at selected locations by interventional techniques.
In the case of a transvascular intervention, it is necessary to first deliver a sheath to a lesion site through a tortuous path of the human body and then deliver an implantation instrument or a drug to the lesion site through the sheath. In the process that the sheath tube enters a human body and is used for conveying an instrument or a medicament after a channel is established, the sheath tube is easily bent and deformed under the action of tissues such as blood vessels of the human body or an implantation instrument. How to improve the anti-bending performance of the sheath tube, the sheath tube keeps a preset slender tubular structure, and the unrecoverable deformation is not generated, so that the performance of the sheath tube is improved.
In order to improve the anti-folding performance of the sheath, a common method is to arrange an anti-folding layer inside the sheath, for example, a metal wire is placed inside the sheath, and the key is to uniformly arrange the metal wire inside the sheath, so that the product performance and the production efficiency are ensured to be the problems to be solved.
In the prior art, a single long and thin spring is sleeved on a long and thin inner sheath. The spring is formed by winding filaments into a tightly arranged shape, the cross section of each filament is rectangular, the surface of a finished spring product is smooth and very soft, and the spring product is easy to deform without recovery when being subjected to external force. When processing anti-roll sheath pipe, the technical staff need manually establish the surface at long and thin hollow inlayer sheath pipe with above-mentioned spring cover, inlayer sheath pipe length often reaches 1000mm, the cover establishes an inlayer sheath pipe required time and can reach several hours, the cover establishes the in-process and also often can't keep the adjacent filament interval of spring even, the inhomogeneous sheath pipe finished product anti-roll performance of spring interval is poor, in addition the cover establishes the in-process, if the mistake makes the spring produce can not resume deformation, then need to change the spring and establish again the cover.
Therefore, the anti-bending sheath tube produced by the method takes long time, has low yield, causes raw material waste and has low production efficiency.
In view of the above, there is a need for an improvement in the production method of the conventional bending-resistant sheath.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an anti-bending filament winding apparatus for an anti-bending sheath and a method for manufacturing an anti-bending sheath, which can rapidly wind an anti-bending filament around an inner sheath of a sheath, and can improve the production efficiency and the processing accuracy of the sheath.
In order to achieve the above object, an object of the present invention is to provide an anti-bending filament winding apparatus of an anti-bending sheath, comprising:
the equipment comprises an equipment main body and a clamping device, wherein the equipment main body is provided with two box bodies, a working space is arranged between the two box bodies, two corresponding side surfaces of the two box bodies are respectively and correspondingly provided with two clamping pieces, and the two clamping pieces are used for clamping a core rod provided with an inner sheath pipe;
the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through;
a first rail to which the control slider is slidably mounted;
the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape;
a second rail to which the anti-jackwire mount is slidably mounted;
two when the holder centre gripping inlayer sheath pipe rotated, the control slider with anti silk mount pad can be along respectively first track with the second track slides in coordination, with anti silk of rolling over twine in order in inlayer sheath pipe.
In some preferred embodiments of the present invention, the control end of the control slider has a lateral protrusion, the lateral protrusion has a guide channel thereon, and the anti-kink wire is wound around the inner sheath after passing through the guide channel.
In some preferred embodiments of the present invention, the bypass channel is a groove formed at the top end of the control slider; or the avoiding channel is a groove formed at the bottom end of the control slide block; or the avoiding channel is a groove formed on the side surface of the control end of the control slide block; or the avoiding channel is a channel penetrating through the control end of the control slide block.
In some preferred embodiments of the present invention, the guide channel is a groove formed at an apex of the lateral projection; or the guide channel is a groove formed at the bottom end of the lateral projection; or the guide channel is a groove formed in a side surface of the lateral protrusion; or the guide channel is a channel through the lateral projection.
In some preferred embodiments of the present invention, the bending-resistant wire winding apparatus of the bending-resistant sheath further comprises a laser emitter, a laser emitter mounting bracket, and a third rail, the laser emitter being mounted to the laser emitter mounting bracket, the laser emitter mounting bracket being slidably mounted to the third rail; when the inner sheath pipe rotates, the laser emitting piece mounting rack can slide along the third rail in a coordinated manner.
In some preferred embodiments of the present invention, the laser emitting element mounting bracket includes a base frame slidably mounted on the third rail, and an adjusting frame having one end mounted on the base frame and the other end extending toward and above the control slider for adjusting the distance between the laser emitting element and the inner sheath.
In some preferred embodiments of the present invention, the anti-bending filament winding apparatus of the anti-bending sheath further includes an avoiding member mounted to the control end of the control slider, the avoiding channel is formed in the avoiding member, and the avoiding member is detachably mounted to the control end.
In some preferred embodiments of the present invention, the bending-resistant wire winding apparatus of the bending-resistant sheath further comprises a welding ring adapted to be installed outside the inner sheath, and an end of the bending-resistant wire is adapted to be interposed between the inner sheath and the welding ring.
According to another aspect of the present invention, the present invention further provides a method for producing a kink-resistant sheath, comprising:
sleeving an inner-layer sheath tube of the anti-bending sheath tube on a core rod of anti-bending filament winding equipment of the anti-bending sheath tube, clamping the core rod with the inner-layer sheath tube between two clamping pieces of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling the core rod with the inner-layer sheath tube to penetrate through an avoiding channel of a control slide block;
the head end of the anti-folding wire penetrates through a guide channel of the control slide block, and is fixed at a preset position of the inner sheath;
controlling the core rod with the inner sheath tube to rotate and controlling the control slide block to move cooperatively;
when the anti-folding wire is wound to the tail end of the inner sheath, fixing the tail end of the anti-folding wire at a preset position of the tail end of the inner sheath;
and taking down the core rod with the inner-layer sheath tube, sleeving an outer-layer sheath tube and a heat-shrinkable tube on the outer side of the core rod with the inner-layer sheath tube, and carrying out heat treatment.
In some preferred embodiments of the present invention, controlling the rotation of the mandrel with the inner sheath and controlling the cooperative movement of the control slide further includes:
and controlling the coiled and wound anti-bending wires to cooperatively move along with the rotation of the core rod with the inner layer sheath tube.
In some preferred embodiments of the present invention, the winding apparatus further comprises a laser emitter mounted to the laser emitter mounting bracket, and a laser emitter mounting bracket for welding the anti-kink wire to the inner sheath.
In some preferred embodiments of the present invention, controlling the rotation of the mandrel with the inner sheath and controlling the cooperative movement of the control slide further includes:
and controlling the laser emitting piece mounting frame to carry the laser emitting piece to cooperatively move along with the rotation of the core rod with the inner-layer sheath tube.
In some preferred embodiments of the present invention, in the step, the passing the head end of the anti-folding wire through the guide channel of the control slider, and fixing the head end of the anti-folding wire at a preset position of the inner sheath, further includes:
sleeving the welding ring outside the inner sheath;
placing the head end of the anti-folding wire between the inner sheath and the welding ring;
and welding the overlapped part of the anti-folding wire and the welding ring.
The anti-bending filament winding equipment of the anti-bending sheath and the production method of the anti-bending sheath provided by the invention have at least one of the following beneficial effects:
(1) according to the anti-folding wire winding equipment for the anti-folding sheath tube and the production method of the anti-folding sheath tube, the anti-folding wire can be quickly wound on the inner sheath tube of the anti-folding sheath tube through the anti-folding wire winding equipment for the anti-folding sheath tube, so that the winding efficiency of the anti-folding wire can be improved, and the damage rate of the anti-folding wire in the winding process can be reduced.
(2) According to the anti-folding wire winding equipment of the anti-folding sheath tube and the production method of the anti-folding sheath tube, the control end of the control slide block of the anti-folding wire winding equipment of the anti-folding sheath tube is provided with the avoiding channel, so that a core rod with an inner layer sheath tube can be allowed to pass through, and the stability of the core rod with the inner layer sheath tube is improved in the winding process of the anti-folding wire.
(3) According to the production method of the anti-folding sheath tube of the anti-folding wire winding equipment of the anti-folding sheath tube, one side of the control end of the control slide block of the anti-folding wire winding equipment of the anti-folding sheath tube is provided with the lateral bulge, the lateral bulge is provided with the guide channel for the anti-folding wire to pass through, the anti-folding wire passes through the guide channel and then is wound on the inner layer sheath tube, and a preset angle is formed between the guide channel and the avoiding channel, so that the anti-folding wire can be wound on the core rod with the inner layer sheath tube at the preset angle.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.
Fig. 1 is a perspective view of an anti-bending filament winding apparatus of an anti-bending sheath according to a preferred embodiment of the present invention;
fig. 2 is a side view of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;
fig. 3 is a plan view of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;
fig. 4 is a perspective view of a control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;
fig. 5 is another perspective view of the control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;
fig. 6 is a side view of a control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;
fig. 7 is a schematic sectional structure view of the anti-kink sheath according to the preferred embodiment of the present invention;
fig. 8 is a partial structural perspective view of the kink-resistant sheath of the preferred embodiment of the present invention;
fig. 9 is a flowchart of a production method of the bending-resistant sheath according to the preferred embodiment of the present invention.
The reference numbers illustrate:
the device comprises a device main body 1, a control sliding block 2, a first rail 3, an anti-broken wire mounting seat 4, a second rail 5, a box body 11, a working space 10, a clamping piece 12, a mounting end 21, a control end 22, a lateral convex block 23, a core rod 61, a laser emitting piece 71, a laser emitting piece mounting frame 72, a channel 220 avoiding, a guide channel 230, a base frame 721, an adjusting frame 722, an inner-layer sheath tube 62, an outer-layer sheath tube 63, an anti-broken wire 64 and a welding ring 65.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Example 1
Referring to fig. 1 to 8 of the specification, the present invention provides an anti-folding wire winding apparatus for an anti-folding sheath, which can wind an anti-folding wire 64 on an inner sheath 62 of the anti-folding sheath in order, so as to improve the winding efficiency of the anti-folding wire 64 and prevent the anti-folding wire 64 from being damaged during the winding process.
Specifically, the anti-bending filament winding device of the anti-bending sheath comprises: the device comprises a device main body 1, a control slide block 2, a first rail 3, an anti-broken wire mounting seat 4 and a second rail 5, wherein the device main body 1 is provided with two box bodies 11, a working space 10 is arranged between the two box bodies 11, two clamping pieces 12 are correspondingly mounted on two corresponding side surfaces of the two box bodies 11 respectively, and the two clamping pieces 12 are used for clamping a core rod 61 provided with an inner-layer sheath tube 62; the control slide block 2 is provided with a mounting end 21 and a control end 22, the control end 22 is provided with an escape channel 220 for the core rod 61 and the inner sheath 62 to pass through; the control slide block 2 is slidably mounted on the first track 3; the anti-folding wire mounting seat 4 is slidably mounted on the second rail 5 for mounting an anti-folding wire 64; when the two clamping pieces 12 clamp the core rod 61 and carry the inner sheath 62 to rotate, the control slide block 2 and the anti-folding wire mounting seat 4 can cooperatively slide along the first rail 3 and the second rail 5 respectively, so as to orderly wind the anti-folding wire 64 on the inner sheath 62.
It should be noted that, the anti-folding wire winding device of the anti-folding sheath provided by the present invention can wind the anti-folding wire 64 on the inner sheath 62 of the anti-folding sheath in order, so that the anti-folding wire 64 is not required to be wound on the inner sheath 62 in a manual manner, which can improve the winding efficiency of the anti-folding wire 64, on the other hand, can effectively reduce the damage rate of the anti-folding wire 64 during the winding process, and reduce the production cost.
Preferably, in the present preferred embodiment, the first track 3 is implemented as a first screw, the control slide 2 has a corresponding first threaded groove or first threaded hole, and the first track 3 implemented as a first screw is mounted in the first threaded groove or the second threaded hole of the control slide 2. When the first rail 3 implemented as a first screw rotates, the first rail 3 pushes the control slider 2 to slide along a direction in which the length of the first rail 3 extends.
Preferably, in the present preferred embodiment, the second rail 5 is implemented as a second screw, the anti-bending thread mounting seat 4 has a corresponding second threaded groove or second threaded hole, and the second rail 5 implemented as a second screw is mounted in the second threaded groove or the second threaded hole of the anti-bending thread mounting seat 4. When the second rail 5 implemented as a second screw is rotated, the second rail 5 pushes the anti-bending wire mount 4 to slide in a direction in which the length of the second rail 5 extends.
It should be further noted that, in the process that the two clamping members 12 drive the core rod 61 with the inner sheath 62 mounted thereon to rotate, the first rail 3 cooperatively rotates and pushes the control slider 2 to cooperatively move with the rotation of the inner sheath 62 along the length direction of the first rail 3, so as to push the portion to be wound of the anti-folding wire 64 to slide along the inner sheath 62, so that the anti-folding wire 64 is sequentially and sequentially wound on the inner sheath 62. In the process that the two clamping pieces 12 drive the core rod 61 provided with the inner-layer sheath tube 62 to rotate, the second rail 5 rotates cooperatively, and pushes the anti-broken wire mounting seat 4 to move cooperatively with the rotation of the inner-layer sheath tube 62 along the length direction of the second rail 5, so that the anti-broken wire mounting seat 4 can move cooperatively with the control slider 2.
Further, the anti-folding wire winding device of the anti-folding sheath tube comprises a driving motor installed in the box body 11, and the driving motor is used for driving the two clamping pieces 12, the first rail 3 and the second rail 5 to cooperatively rotate. It is to be understood that the number of the driving motors can be embodied as one or more, and the specific number of the driving motors should not constitute a limitation of the present invention.
In the process of using the anti-bending filament winding apparatus for the anti-bending sheath provided by the present invention, the inner sheath 62 is required to be mounted on the core rod 61, and then the core rod 61 mounted with the inner sheath 62 is clamped between the two clamping members 12. The anti-folding wire 64 wound in a roll shape is mounted on the anti-folding wire mounting seat 4, and the head end of the anti-folding wire 64 is fixed at the corresponding position of the inner sheath tube 62. Then the two clamping pieces 12, the first rail 3 and the second rail 5 are controlled to rotate cooperatively by the driving motor.
Preferably, the escape passage 220 is a groove formed at the top end of the control end 22 of the control slider 2. Optionally, the escape passage 220 is a groove formed at the bottom end of the control end 22 of the control slider 2. Optionally, the escape passage 220 is a groove formed in the side of the control end 22 of the control slide 2. Optionally, the escape passage 220 is a passage through the control end 22 of the control slide 2.
In a modified embodiment of the anti-bending filament winding apparatus for the anti-bending sheath according to the present invention, the anti-bending filament winding apparatus for the anti-bending sheath further includes an avoiding member mounted on the control end 22 of the control slider 2, and the avoiding channel 220 is formed in the avoiding member. In this variant embodiment, the bypass member is detachably mounted to the control end 22 of the control slider 2, such as by a threaded connection, a snap-fit connection, or an interference fit connection. The avoiding member has various different specifications, and the avoiding member with different specifications has the avoiding channel 220 with different dimensions so as to be suitable for the inner sheath tube 62 with different dimensions. It will be appreciated that the kink-resistant sheaths have a size range of 3F-28F, and that kink-resistant sheaths of different sizes require correspondingly sized inner sheath 62 and, therefore, a different sized escape channel 220. In the present modified embodiment, the avoidance member having a different size of the avoidance channel 220 can be replaced for the inner sheath 62 having a different size, so that the inner sheath can be better fixed during the winding process.
Preferably, the inner wall of the avoidance channel 220 is made of PTFE (polytetrafluoroethylene), that is, the inner wall of the avoidance channel 220 has a PTFE (polytetrafluoroethylene) coating to increase the lubricating performance of the avoidance channel 220. Optionally, the bypass is made of a PTFE (polytetrafluoroethylene) material. It is to be understood that the particular type of material from which the inner walls of the escape passage 220 are made should not be construed as limiting the invention.
It should be noted that, during the winding process of the anti-folding wire 64, the inner sheath 62 is located in the avoiding channel 220, and the peripheral wall of the avoiding channel 220 slides along the length extending direction of the inner sheath 62, so that the stability of the inner sheath 62 can be improved and the winding uniformity of the anti-folding wire 64 can be improved during the winding process of the anti-folding wire 64.
Further, the control end 22 of the control slider 2 further has a lateral protrusion 23, the lateral protrusion 23 has a guide channel 230 for installing the anti-folding wire 64, and the anti-folding wire 64 is wound around the inner sheath 62 after passing through the guide channel 230.
Preferably, the guide channel 230 is a groove formed at the tip of the lateral projection 23. Optionally, the guide channel 230 is a groove formed at the bottom end of the lateral projection 23. Optionally, the guide channel 230 is a groove formed on the side of the lateral protrusion 23. Optionally, the guide channel 230 is a channel through the lateral projection 23.
Further, a preset angle is formed between the central axis of the guiding channel 230 and the central axis of the avoiding channel 220, so that the anti-folding wire 64 can be guided to wind around the inner sheath 62 at the preset angle. Preferably, the predetermined angle between the central axis of the guide channel 230 and the central axis of the escape channel 220 is 90 degrees. In other words, the central axis of the guide channel 230 is perpendicular to the central axis of the escape channel 220. It is understood that the predetermined angle between the central axis of the guide channel 230 and the central axis of the escape channel 220 can also be implemented as other angular values, and the size of the predetermined angle should not be construed as limiting the present invention.
Further, the anti-bending wire winding device of the anti-bending sheath tube further comprises a laser emitting piece 71, a laser emitting piece mounting frame 72 and a third rail, wherein the laser emitting piece 71 is mounted on the laser emitting piece mounting frame 72, and the laser emitting piece mounting frame 72 is slidably mounted on the third rail. The laser emitting component 71 is used for welding the anti-bending wires 64 contacting with the head end and the tail end of the inner sheath 62 to the inner sheath 62.
Preferably, when the two clamping members 12 drive the inner sheath 62 to rotate, the laser emitting member mounting bracket 72 can cooperatively slide along the length direction of the third rail.
Referring to fig. 1, 2 and 3 of the specification, further, the laser emitting device mounting bracket 72 includes a base frame 721 and an adjusting frame 722, the base frame 721 is slidably mounted on the third rail, the adjusting frame 722 is mounted on the base frame 721, and the adjusting frame 722 can slide up and down along the height direction of the base frame 721 to adjust the distance between the laser emitting device 71 and the inner sheath 62.
Referring to the attached fig. 3 of the specification, the laser emitting part mounting frame 72 and the anti-bending wire mounting seat 4 are respectively located on two sides of the control slide block 2. The adjusting bracket 722 of the laser emitting member mounting bracket 72 extends from the base frame 721 toward the control slider 2 and extends above the control slider 2, so that the laser emitting member 71 mounted on the adjusting bracket 722 can be located above the control slider 2.
Further, the anti-bending filament winding device of the anti-bending sheath provided by the invention further comprises a laser emission control assembly, wherein the laser emission control assembly comprises a laser power supply, an optical system, a numerical control system, a CCD monitoring system and a red light positioning system, and is independent of the device main body 1.
The welding point is positioned by using the red positioning system after the anti-folding wire 64 is wound on the core rod 61 at the beginning and the anti-folding wire 64 is wound. The laser light source is preferably a pulsed laser having a relationship between pulse energy, pulse width and power density as shown in the following formula.
Wherein rho is power density, E is pulse energy, d is laser spot diameter, t is pulse width, E is preferably 2-6J (joule) and t is preferably 3-8 microseconds (10 microseconds) aiming at the winding of the anti-bending wire 64 of the anti-bending sheath-3Seconds). So set up, both can guarantee welded quality, also can not damage spring ring and inlayer sheath pipe 62 because of the heat that produces in the welding process, can not reduce the yield because of the welding.
Optionally, in other preferred embodiments of the present invention, the control slider 2, the laser emitting device mounting bracket 72, and the anti-bending wire mounting seat 4 can also be integrally connected and molded or mounted on the same base, so that the control slider 2, the laser emitting device mounting bracket 72, and the anti-bending wire mounting seat 4 can move cooperatively.
Referring to the attached fig. 6, the size of the upper opening of the escape channel 220 of the control end 22 of the control slider 2 is larger than the size of the gear of the lower opening of the escape channel 220, so as to facilitate the insertion of the core rod 61 with the inner sheath 62.
It should be noted that, after the anti-folding wire 64 is wound around the core rod 61, the inner sheath tube 62 wound with the anti-folding wire 64 is removed, and an outer sheath tube 63 and a heat-shrinkable tube are sleeved outside the anti-folding wire 64, and heat treatment is performed.
Preferably, the anti-fold wires 64 are implemented as spring wires. It will be appreciated that the pitch of the anti-kink filaments 64 can be preset before the winding starts, and in some embodiments the cross-section of the anti-kink filaments 64, which are implemented as spring filaments, is rectangular, which facilitates a reduction of the radial dimension of the sheath, preferably the cross-sectional dimension is 0.5mm thick and 1mm wide, and the pitch of the spring filaments can be 0.5-5 times the width of the spring filaments, with the stiffness of the anti-kink sheath decreasing as the pitch increases. Preferably, the material of the anti-folding wire 64 implemented as a spring wire is medical stainless steel.
It should be noted that, in some preferred embodiments, a tension control module is installed on the anti-folding wire installation seat 4, and is used for controlling the tension in the winding process of the anti-folding member more precisely, and adjusting the tension between the anti-folding wire 64 and the core rod 61 to make it in a balanced state, so as to avoid the loosening of the anti-folding wire 64 caused by too small tension, and simultaneously avoid the over tightening of the anti-folding wire 64 caused by too large tension, so that the winding process is more controllable.
Preferably, the inner sheath 62 and the outer sheath 63 are each made of a polymer material, including but not limited to PEBAX (polyether block polyamide).
Referring to fig. 8 of the specification, the anti-bending wire winding device of the anti-bending sheath provided by the invention further comprises a welding ring 65. Before the anti-kink wire 64 is wound around the inner sheath 62, the welding ring 65 is sleeved outside the head end of the inner sheath 62, so as to weld the head end of the anti-kink wire 64 to the head end of the inner sheath 62. The welding ring 65 has a thin-plate structure in partial section, and has a radial dimension equivalent to the outer dimension of the inner sheath 62. Before the anti-folding wire 64 is wound around the inner sheath 62, one end of the anti-folding wire 64 is placed between the outer surface of the inner sheath 62 and the welding ring 65, so that one end of the anti-folding wire 64 is partially overlapped with the welding ring 65, and a laser welding point is positioned at the overlapped part of the anti-folding wire 64 and the welding ring 62 to weld the two.
Preferably, the material of the solder ring 65 is, but not limited to, palladium-gold, tungsten-gold or palladium-iridium alloy.
It is worth mentioning that, through setting up welding ring 65 can be more conveniently with the tip of anti silk 64 is fixed in the tip of inlayer sheath 62 can improve the welded degree of accuracy, can also further control the produced heat of welding in-process and to anti silk 64 with the influence of inlayer sheath 62 improves the yield.
It is further noted that the weld ring 65 remains at the head end of the inner sheath 62 when the outer sheath 63 is installed. In the using process, the welding ring 65 can be used as a developing ring of a finished sheath, so that the functions of marking the position of the head end of the sheath and measuring the position reached by an implanting instrument in the operation process are achieved, and the process of placing the developing ring is reduced.
Further, the anti-folding wire winding device of the anti-folding sheath tube further comprises a tension meter, wherein the tension meter is mounted on the device main body and used for controlling the tension of the anti-folding wire 64 in the winding process of the anti-folding wire 64. The preferable tension range is 5-15N (Newton), the tension value is selected to be in positive correlation with the size of the sheath tube, the winding tension in the range can better control the anti-folding wire 64 in the welding link, the welding fracture condition is avoided, the anti-folding wire 64 interruption condition is avoided in the winding process, and the production efficiency and the yield are improved.
Example 2
Referring to fig. 9 of the specification, according to another aspect of the present invention, there is further provided a method for producing a kink-resistant sheath, comprising:
101: sleeving an inner-layer sheath tube 62 of the anti-bending sheath tube on a core rod 61 of anti-bending filament winding equipment of the anti-bending sheath tube, clamping the core rod 61 with the inner-layer sheath tube 62 between two clamping pieces 12 of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling the core rod 61 with the inner-layer sheath tube 62 to penetrate through an avoidance channel 220 of a control slide block 2;
102: the head end of the anti-folding wire 64 penetrates through the guide channel of the control slide block 2, and the head end of the anti-folding wire 64 is fixed at the preset position of the inner sheath tube 62;
103: controlling the core rod 61 with the inner sheath tube 62 to rotate and controlling the control slide block 2 to move cooperatively;
104: when the anti-folding wire 64 is wound to the tail end of the inner sheath tube 62, fixing the tail end of the anti-folding wire 64 at a preset position of the tail end of the inner sheath tube 62;
105: taking down the core rod 61 with the inner layer sheath tube 62, sleeving an outer layer sheath tube 63 and a heat-shrinkable tube outside the core rod 61 with the inner layer sheath tube 62, and performing heat treatment.
Further, in the step 103, controlling the rotation of the mandrel with the inner sheath 62 and controlling the cooperative movement of the control slide further includes:
106: the antiflex wire 64, which controls the winding of the coil, is moved in unison while the core rod with the inner sheath 62 is rotated.
Further, the winding device further comprises a laser emitting piece 71 and a laser emitting piece mounting frame 72, wherein the laser emitting piece 71 is mounted on the laser emitting piece mounting frame 72, and the laser emitting piece 71 is used for welding the anti-folding wire 64 to the inner sheath 62.
Further, in the step 103, controlling the rotation of the mandrel with the inner sheath 62 and controlling the cooperative movement of the control slide further includes:
controlling the laser emitting member mounting frame 72 to carry the laser emitting member 71 to move cooperatively with the rotation of the inner sheath 62 with the inner sheath 62.
It should be noted that, in the step 102, the method further includes:
1021: sleeving the welding ring 65 outside the inner sheath tube 62;
1022: placing the head end of the anti-kink wire 64 between the inner sheath 62 and the weld ring 65;
1023: the portions of the anti-crease lines 64 that overlap the weld rings 65 are welded.
In the step 105, the heat-shrinkable tube is an FEP tube with a heat shrinkage temperature of about 190-.
It should also be noted that the winding pitch of the anti-bending wire 64 is set according to the requirement of the sheath tube finished product, the common anti-bending sheath tube is set to be a fixed pitch, the anti-bending wire 64 formed by winding is uniform in interval, and the overall hardness of the sheath tube is correspondingly uniform. In some cases, different positions of the finished sheath tube are required to have different hardness, and for sheath tubes with different parts requiring different hardness, the anti-folding wires 64 can be controlled to have variable pitches by controlling the rotation speeds of the core rod 61 and the inner layer sheath tube 62, the pitches can be changed in the winding process, accordingly, the different positions of the wound anti-folding wires 64 have different pitches, and the hardness of the sheath tube is correspondingly changed, so that the requirements of different diseases are met.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (6)
1. An anti-broken filament winding apparatus of an anti-broken sheath, comprising:
the equipment comprises an equipment main body and a clamping device, wherein the equipment main body is provided with two box bodies, a working space is arranged between the two box bodies, two corresponding side surfaces of the two box bodies are respectively and correspondingly provided with two clamping pieces, and the two clamping pieces are used for clamping a core rod provided with an inner sheath pipe;
the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through;
a first rail to which the control slider is slidably mounted;
the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape;
a second rail to which the anti-jackwire mount is slidably mounted;
when the two clamping pieces clamp the inner sheath tube to rotate, the control slide block and the anti-bending wire mounting seat can cooperatively slide along the first track and the second track respectively so as to orderly wind the anti-bending wire on the inner sheath tube;
the laser emitting device comprises a laser emitting piece, a laser emitting piece mounting frame and a third rail, wherein the laser emitting piece is mounted on the laser emitting piece mounting frame which is slidably mounted on the third rail; when the inner sheath pipe rotates, the laser emitting piece mounting rack can cooperatively slide along the third rail;
the laser emitting piece mounting frame comprises a base frame and an adjusting frame, the base frame is slidably mounted on the third rail, one end of the adjusting frame is mounted on the base frame, the other end of the adjusting frame extends towards the direction of the control slide block and extends above the control slide block, and the adjusting frame is used for adjusting the distance between the laser emitting piece and the inner sheath;
the anti-folding wire winding equipment of the anti-folding sheath pipe further comprises a welding ring, the welding ring is suitable for being installed on the outer side of the inner-layer sheath pipe, and the end portion of the anti-folding wire is suitable for being arranged between the inner-layer sheath pipe and the welding ring.
2. The apparatus of claim 1, wherein the control end of the control slider has a lateral protrusion, the lateral protrusion has a guide channel thereon, and the anti-folding wire passes through the guide channel and then is wound around the sheath.
3. The bending-resistant wire winding apparatus for a bending-resistant sheath according to claim 1, wherein the escape passage is a groove formed at a tip of the control end of the control slider; or the avoiding channel is a groove formed at the bottom end of the control slide block; or the avoiding channel is a groove formed on the side surface of the control end of the control slide block; or the avoiding channel is a channel penetrating through the control end of the control slide block.
4. The bending-resistant wire winding apparatus of a bending-resistant sheath according to claim 2, wherein the guide channel is a groove formed at a tip of the lateral projection; or the guide channel is a groove formed at the bottom end of the lateral projection; or the guide channel is a groove formed in a side surface of the lateral protrusion; or the guide channel is a channel through the lateral projection.
5. The anti-filament winding apparatus for an anti-folding sheath according to claim 1, wherein the anti-filament winding apparatus for an anti-folding sheath further comprises a bypass member mounted to the control end of the control slider, the bypass channel is formed in the bypass member, and the bypass member is detachably mounted to the control end.
6. A method for producing an anti-bending sheath tube is characterized by comprising the following steps:
sleeving an inner-layer sheath tube of the anti-bending sheath tube on a core rod of anti-bending filament winding equipment of the anti-bending sheath tube, clamping the core rod with the inner-layer sheath tube between two clamping pieces of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling the core rod with the inner-layer sheath tube to penetrate through an avoiding channel of a control slide block;
the head end of the anti-folding wire penetrates through a guide channel of the control slide block, and is fixed at a preset position of the inner sheath;
controlling the core rod with the inner sheath tube to rotate and controlling the control slide block to move cooperatively;
when the anti-folding wire is wound to the tail end of the inner sheath, fixing the tail end of the anti-folding wire at a preset position of the tail end of the inner sheath;
taking down the core rod with the inner-layer sheath tube, sleeving an outer-layer sheath tube and a heat-shrinkable tube on the outer side of the inner-layer sheath tube, and carrying out heat treatment;
the method also comprises the following steps of controlling the rotation of the core rod with the inner sheath pipe and controlling the cooperative movement of the control slide block: controlling the coiled winding anti-bending wire to cooperatively move along with the rotation of the core rod with the inner layer sheath tube;
wherein the winding device further comprises a laser emitter and a laser emitter mounting bracket, the laser emitter being mounted to the laser emitter mounting bracket, the laser emitter being configured to weld the anti-kink wire to the inner sheath;
the method also comprises the following steps of controlling the rotation of the core rod with the inner sheath pipe and controlling the cooperative movement of the control slide block: controlling the laser emitting piece mounting rack to carry the laser emitting piece to cooperatively move along with the rotation of the core rod with the inner sheath tube;
wherein the head end that will resist the silk passes the guide way of control slider to will the head end of resisting the silk is fixed in the preset position of inlayer sheath pipe specifically is:
sleeving the welding ring outside the inner sheath;
placing the head end of the anti-folding wire between the inner sheath and the welding ring;
and welding the overlapped part of the anti-folding wire and the welding ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226886.3A CN112024774B (en) | 2020-11-06 | 2020-11-06 | Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011226886.3A CN112024774B (en) | 2020-11-06 | 2020-11-06 | Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube |
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| CN112024774A CN112024774A (en) | 2020-12-04 |
| CN112024774B true CN112024774B (en) | 2021-01-19 |
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| CN202011226886.3A Active CN112024774B (en) | 2020-11-06 | 2020-11-06 | Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3135763A1 (en) * | 1981-09-09 | 1983-03-17 | Fa. Aug. Winkhaus, 4404 Telgte | DRIVE ROD GEARBOX |
| FR2671009B1 (en) * | 1990-12-28 | 1993-03-12 | Nivarox Sa | GUIDE SUPPORT FOR CATHETER. |
| US20030118630A1 (en) * | 2001-12-07 | 2003-06-26 | Anthony Cerami | Immune modulation device for use in animals |
| US20160015509A1 (en) * | 2014-07-21 | 2016-01-21 | Ardle Tomás McDonough | Implantable stent |
| CN105268081B (en) * | 2015-11-10 | 2018-08-03 | 深圳麦普奇医疗科技有限公司 | A kind of clinical vascular intervenien therapy conduit and preparation method thereof |
| CN105943210A (en) * | 2015-12-23 | 2016-09-21 | 微创心脉医疗科技（上海）有限公司 | Intervention apparatus sheath tube and manufacturing method thereof |
| CN205698829U (en) * | 2016-03-09 | 2016-11-23 | 宁波琳盛高分子材料有限公司 | Novel sheath |
| CN205698141U (en) * | 2016-04-12 | 2016-11-23 | 苏州茵络医疗器械有限公司 | Intravascular stent induction system and conduit tube component thereof |
| CN107280831B (en) * | 2016-04-12 | 2019-02-01 | 苏州茵络医疗器械有限公司 | Intravascular stent transportation system and its conduit tube component |
| CN205774080U (en) * | 2016-07-11 | 2016-12-07 | 四川南玻节能玻璃有限公司 | Annealing furnace air grid asbestos cord Wiring apparatus |
| CN207270549U (en) * | 2017-01-11 | 2018-04-27 | 心诺普医疗技术（北京）有限公司 | A kind of medical tube and the sheath using the tube body |
| CN208555528U (en) * | 2018-06-15 | 2019-03-01 | 石家庄飞机工业有限责任公司 | A kind of metal hose wind |
| CN210233986U (en) * | 2019-05-08 | 2020-04-03 | 杭州越歌科技有限公司 | Winding arrangement wall pipe and manufacturing installation thereof |
| CN210211347U (en) * | 2019-07-02 | 2020-03-31 | 福建鼎力克拉管业科技有限公司 | Automatic winding device for plastic winding pipe |
| CN111210989B (en) * | 2020-04-23 | 2020-07-14 | 上海介入医疗器械有限公司 | Sliding winding mechanism, winding device and winding method of winding piece |
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