CN108771572A - A kind of segmented Esophageal Stent and its weaving method - Google Patents
A kind of segmented Esophageal Stent and its weaving method Download PDFInfo
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- CN108771572A CN108771572A CN201811047146.6A CN201811047146A CN108771572A CN 108771572 A CN108771572 A CN 108771572A CN 201811047146 A CN201811047146 A CN 201811047146A CN 108771572 A CN108771572 A CN 108771572A
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- Prior art keywords
- esophageal stent
- hollow metal
- segmented
- metal pipe
- pipe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
Abstract
The present invention provides a kind of segmented Esophageal Stent and its weaving methods, it is that both ends made of being woven by a monofilament are in bell-mouthed cylindrical mesh holder, network is made of two sections of upper oared segrne pii and lower oared segrne pii, is connected by several buckle structures between upper oared segrne pii and lower oared segrne pii.Collude with formula lock compared to existing, cross buckle structure of the invention can enhance the support force of entire Esophageal Stent and with preferable rigidity；The both ends of Esophageal Stent are bell mouth shape, and bell-mouthed to can be designed so that Esophageal Stent after tripping in oesophagus, the horn mouth on top passes through conducive to food, and the horn mouth of lower part can prevent stent migration, and good fixed function is played to holder, make its accurate maintenance；The braiding process of entire holder is whole to be completed only with a silk thread, has both improved the rigidity of Esophageal Stent, while can also reduce the axial crushing deformation of Esophageal Stent, it is ensured that the normal use of Esophageal Stent.
Description
Technical field
The invention belongs to area of medical devices, and in particular to a kind of segmented Esophageal Stent and its weaving method.
Background technology
Lemostenosis or obstruction are the common complications of disease of digestive tract, and common therapy is controlled using domestic holder
It is to be put into Biodegradable scaffold in lesion to treat lemostenosis and obstruction, specific way, it is shaped in short term in oesophagus, tool
There is good biocompatibility, be then completely dissolved, and the degradation time of adjusting bracket can be needed according to clinic, avoids forever
The complication of long property holder.The shape and weaving method of Esophageal Stent are various, and currently used is segmented holder, segmented branch
The part charge of frame is to be connected using the lock worked in collusion, and integral support is woven using multi-filament line, causes holder
It is easily shunk axial, integral rigidity is poor, further results in the fixed force of both ends open and reduces, while holder can be inside at middle part
It shrinks, causes the internal diameter of holder to become smaller, be unfavorable for food and pass through, for a long time using the service life that can even shorten Esophageal Stent.
Invention content
It is axially easy using Esophageal Stent caused by the braiding of multi-filament line that present invention aim to address existing Esophageal Stents
Shorten the problem with integral rigidity difference.
For this purpose, the present invention provides a kind of segmented Esophageal Stent, it is that both ends made of being woven by a monofilament are in loudspeaker
The cylindrical mesh holder of mouth, network are made of two sections of upper oared segrne pii and lower oared segrne pii, and upper oared segrne pii is under
It is connected by several buckle structures between oared segrne pii.
Further, buckle structure is handed in upper oared segrne pii end and lower oared segrne pii end junction lapping by monofilament
Fork-shaped at decussate texture.
Further, at least three buckle structures are equipped between upper oared segrne pii and lower oared segrne pii.
Further, bell-mouthed angle is 40~50 °.
Further, a kind of weaving method of segmented Esophageal Stent, includes the following steps：
Step 1：The middle part that tooling is woven in Esophageal Stent beats blind hole and is inserted into lead screw in blind hole；
Step 2：One end of monofilament is fixed on the head that Esophageal Stent weaves any one end of tooling, the other end
The webbed upper oared segrne pii of overlapping cross winding shape and lower oared segrne pii are loaded onto in Esophageal Stent weaver, monofilament is at lead screw
Lapping cross winding forms criss-cross buckle structure；
Step 3 weaves at least three buckle structures according to the weaving method of step 2；
Step 4, after the completion of braiding, forming it into flaring to two ports progress thermal finalization of segmented Esophageal Stent is
40~50 ° of horn mouth completes the braiding of segmented Esophageal Stent.
Further, Esophageal Stent braiding tooling includes cylindrical hollow metal pipe, further includes screw rod, pipe nipple, rectangular
Pipe and spring, pipe nipple, rectangular tube and spring are set on screw rod successively from top to bottom, and screw rod passes through hollow metal pipe, hollow gold
Belong to and be equipped with position limiting structure in pipe, one end of spring is limited by position limiting structure, and the other end is against the end face of rectangular tube, the outer diameter of pipe nipple
Identical as the outer diameter of hollow metal pipe, the inner cavity of hollow metal pipe is square duct, and rectangular tube cooperation is interspersed in hollow metal pipe
Square duct in, pipe nipple is fixedly connected or is integrally formed with rectangular tube and can be along screw slide；
It is circumferential on the outer wall of hollow metal pipe and pipe nipple to be evenly spaced equipped with several ribs, and on hollow metal pipe
Rib is corresponded with the rib on pipe nipple.
Further, pipe nipple, rectangular tube and spring are one, and the both ends of screw rod revolve that there are one nuts respectively；
Position limiting structure is the round hole for being opened in hollow metal pipe one end, and the diameter of round hole is less than the diameter of spring,
What hollow metal pipe the other end opened up is square hole, and rectangular tube is inserted in across square hole in hollow metal pipe.
Further, screw rod wears pipe nipple, rectangular tube, spring, the both ends of screw rod successively from two ends to its midpoint
There are one nuts for rotation respectively；
The inner cavity of hollow metal pipe is divided into three sections, and epimere and hypomere are square ducts, and stage casing is cylindrical channel, cylindrical
The aperture in channel is less than the aperture of square duct, and cylindrical channel forms step, two rectangular tubes with square duct junction
It is respectively inserted in corresponding square duct, one end of two springs is against at corresponding step, and the other end is against corresponding rectangular
The end face of pipe, two steps are the position limiting structure of two springs.
Further, when pipe nipple and rectangular tube are slided up and down along screw rod, spring is in nature or compressive state, works as spring
When in the raw, the distance between pipe nipple lower face and hollow metal pipe upper surface are 2~5mm.
Further, circle blind hole being offered on the middle part outer wall of hollow metal pipe, the distance of two adjacent rings blind hole is equal, and
The distance between each two neighboring blind hole of circle is equal, and a lead screw is inserted in each blind hole；Outside hollow metal pipe and pipe nipple
The quantity of rib on wall is identical as the head number of bracket end silk thread to be woven.
Beneficial effects of the present invention：This segmented Esophageal Stent and its weaving method provided by the invention, using monofilament
Be knitted to form segmented Esophageal Stent, when braiding mutually the webbed holder of overlapping cross winding shape, especially subsection part point it
Between use the buckle structure of cross shape, collude with formula lock compared to existing, criss-cross buckle structure of the invention can be with
Enhance the support force of entire Esophageal Stent and with preferable rigidity；The both ends of Esophageal Stent are bell mouth shape, bell-mouthed
Esophageal Stent be can be designed so that after tripping in oesophagus, the horn mouth on top passes through conducive to food, and the horn mouth of lower part can be to prevent
Only stent migration plays good fixed function to holder, makes its accurate maintenance；The braiding process of entire holder it is whole only with
A piece silk thread is completed, and has both improved the rigidity of Esophageal Stent, while can also reduce the axial crushing deformation of Esophageal Stent, it is ensured that
The normal use of Esophageal Stent.
The present invention is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the structural schematic diagram of segmented Esophageal Stent.
Fig. 2~Fig. 9 is the braiding step schematic diagram of embodiment 4.
Figure 10 is the stereogram of Esophageal Stent braiding tooling.
Figure 11 is the front view of Esophageal Stent braiding tooling.
Figure 12 is the sectional view of the Esophageal Stent braiding tooling with a spring in central metal pipe.
Figure 13 is the sectional view of the Esophageal Stent braiding tooling with two springs in central metal pipe.
Figure 14 is the schematic diagram for the central metal pipe for being provided with blind hole.
Reference sign：
1. hollow metal pipe；101. blind hole；
201. screw rod；202. nut；203. pipe nipple；204. rectangular tube；205. spring.
Specific implementation mode
Embodiment 1：
As shown in Figure 1, present embodiments providing a kind of segmented Esophageal Stent, it is two made of being woven by a monofilament
End is in bell-mouthed cylindrical mesh holder, and the network is made of two sections of upper oared segrne pii and lower oared segrne pii, described
It is connected by several buckle structures between upper oared segrne pii and lower oared segrne pii.
The segmented Esophageal Stent of the present embodiment is made of two sections of upper oared segrne pii and lower oared segrne pii, that is to say, that food
The both ends of pipe holder are bell mouth shape, bell-mouthed to can be designed so that Esophageal Stent after tripping in oesophagus, the loudspeaker on top
Mouth passes through conducive to food, and the horn mouth of lower part can prevent stent migration, and good fixed function is played to holder, makes its essence
Quasi- maintenance；The braiding process of entire holder is whole to be completed only with a silk thread, has both improved the rigidity of Esophageal Stent, while
The axial crushing deformation of Esophageal Stent can be reduced, it is ensured that the normal use of Esophageal Stent.
Embodiment 2：
On the basis of embodiment 1, with it is existing collude with formula lock compared with, the buckle structure in the present embodiment is by monofilament
In the decussate texture that upper oared segrne pii end and lower oared segrne pii end junction lapping intersect to form.
The criss-cross buckle structure of the present invention can enhance the support force of entire Esophageal Stent and with preferable rigidity.
The braiding process of entire holder is whole to be completed only with a silk thread, has both improved the rigidity of Esophageal Stent, while can also subtract
The axial crushing deformation of small Esophageal Stent, it is ensured that the normal use of Esophageal Stent.
Embodiment 3：
It on the basis of embodiment 2, in order to ensure the stabilization shape of entire Esophageal Stent, avoids deforming, the upper horn mouth
At least three buckle structures are equipped between section and lower oared segrne pii.The bell-mouthed angle is 40~50 °, bell-mouthed design
It can make Esophageal Stent after tripping in oesophagus, the horn mouth on top passes through conducive to food, and the horn mouth of lower part can prevent
Stent migration plays good fixed function to holder, makes its accurate maintenance.
Embodiment 4：
A kind of weaving method of segmented Esophageal Stent, includes the following steps：
Step 1：The middle part that tooling is woven in Esophageal Stent beats blind hole 101 and is inserted into lead screw in blind hole 101；
Step 2：One end of monofilament is fixed on the head that Esophageal Stent weaves any one end of tooling, the other end
The webbed upper oared segrne pii of overlapping cross winding shape and lower oared segrne pii are loaded onto in Esophageal Stent weaver, monofilament is at lead screw
Lapping cross winding forms criss-cross buckle structure；
Step 3 weaves at least three buckle structures according to the weaving method of step 2；
Step 4, after the completion of braiding, forming it into flaring to two ports progress thermal finalization of segmented Esophageal Stent is
40~50 ° of horn mouth completes the braiding of segmented Esophageal Stent.
The weaving method of according to fig. 2~segmented Esophageal Stent shown in Fig. 9, is as follows：
Before the step of describing weaving method, it should be strongly noted that P1~P12 and R1~R12, these institutes
Esophageal Stent tooling on be equipped with blind hole, amount to 4 circle blind holes, and lead screw be inserted in each blind hole, in order to clearly
Illustrating how Esophageal Stent weaves, the present embodiment has marked the position of 4 circle blind holes (lead screw) in Fig. 2~Fig. 9,
4 lead screws in figure, which are only used as, to be illustrated.
As shown in Fig. 2, by one braiding monofilament end be fixed at A1, then by starting point A1 through D5 to P1, then
By P1 through F6, E8, D10 to B1, B1 is through a2 to A3；
As shown in figure 3, connecting, monofilament is bypassed to G1, then by G1 through p2 to G3 (round in figure is lead screw) by A3 through F11
G3 to R4 (lead screw), R4 are through H6, I8 to L1, then by L1 to N5, N5 is through J11 to I 1, and I 1 is through H3 to R5；
As shown in figure 4, connect, monofilament by R5 through h9 to K1, then by K1 through m4 to N7, N7 through m9 to J1, J1 through h4 to R7,
R7 is passed through through H11 to I 1, I 1 through j5 to N11, N11 through m11 to K1, K1 through h6 to R9, R9 through h10 to J1, J1 through k4 to N9, N9
M12 to L1；
As shown in figure 5, connecting, L1 bypasses R10 to P4 (being inserted with lead screw herein) through I6 to R10 (being inserted with lead screw herein), by
P4 is through F8 to C1；
As shown in fig. 6, connecting, C1 is through B3 to A5, and A5 is through d10 to F1, and F1 is through G3 to P5, and P5 is through d12 to D1；
As shown in fig. 7, connect, D1 through b4 to A7, A7 through b9 to E1, E1 through f4 to P7, P7 through e12 to E1, E1 through b6 extremely
A9, A9 are through b11 to D1, and D1 is through f6 to P9, and P9 is through G11 to F1, and F1 is through c7 to A11, and A11 is through b12 to C1, and C1 is through F6 to P10 (this
Place is inserted with lead screw), P10 to R11 (being inserted with lead screw herein) is bypassed, R11 is through r12 to H1；
As shown in figure 8, connect, H1 through K8 to N1, N1 through h10 to R1, R1 through J8 to M1, M1 through n2 to N3, N3 through J9 extremely
H1, H1 bypass R3 to P11 through r2 to R3 (being inserted with lead screw herein)；
As shown in figure 9, connect, P11 through p12 to G1, then by G1 through D8 to A1；
The braiding of segmented Esophageal Stent is completed, the finished product after braiding is as shown in Figure 1.
It should be strongly noted that weaving method provided by the invention has only used a silk thread from beginning to end.
Embodiment 5：
Present embodiments provide Esophageal Stent braiding tooling, include cylindrical hollow metal pipe 1, as Figure 10 and Figure 11,
Further include screw rod 201, pipe nipple 203, rectangular tube 204 and spring 205, the pipe nipple 203, rectangular tube 204 and spring shown in Figure 12
205 are set on screw rod 201 successively from top to bottom, and the screw rod 201 passes through the hollow metal pipe 1, the hollow metal pipe 1
Interior to be equipped with position limiting structure, one end of the spring 205 is limited by position limiting structure, and the other end is against the end face of the rectangular tube 204,
The outer diameter of the pipe nipple 203 is identical as the outer diameter of the hollow metal pipe 1, and the inner cavity of the hollow metal pipe 1 is square duct,
The cooperation of rectangular tube 204 is interspersed in the square duct of hollow metal pipe 1, and the pipe nipple 203 is fixedly connected with the rectangular tube 204
Or it is integrally formed and can be slided along the screw rod 201；
It is circumferential on the outer wall of the hollow metal pipe 1 and the pipe nipple 203 to be evenly spaced equipped with several ribs (as schemed
Shown in 13), and the rib on hollow metal pipe 1 corresponds (as shown in figure 13) with the rib on pipe nipple 203.
The operation principle or work process of Esophageal Stent braiding tooling provided in this embodiment are as follows：
Esophageal Stent is woven on the outer wall of pipe nipple 203 and hollow metal pipe 1, during braiding, silk thread such as occurs
Tight situation, pressable pipe nipple 203 due to pipe nipple 203 and the connection of rectangular tube 204 or are integrally formed, and pipe nipple 203 is with rectangular
Pipe 204 is slided along screw rod 201, and spring 205 is compressed by the extruding of rectangular tube 204, and then makes the length for entirely weaving tooling
Degree realization is adjustable, and when being adjusted to suitable position, fixed pipe nipple 203 in the position, continues to weave, after the completion of braiding, pressable
Pipe nipple 203 with hollow metal pipe 1 on earth until be close to, since the length of entire tooling shortens and than the length of Esophageal Stent
It is short, easily Esophageal Stent can be removed from tooling at this time, it is time saving and energy saving.
It should be strongly noted that the inner cavity of hollow metal pipe 1 is square duct in the present embodiment, it is to make rectangular tube
When 204 insertion hollow metal pipe 1, the rib on 203 outer wall of hollow metal pipe 1 and pipe nipple can correspond, so as to Esophageal Stent
Braiding.
Esophageal Stent provided in this embodiment weaves tooling, can pipe nipple, hollow metal pipe outer wall on weave rami esophagei
Frame is reserved with the distance of 2~5mm between pipe nipple and hollow metal pipe, can need to press pipe nipple, adjusting pipe nipple according to braiding
The distance between hollow metal pipe ensures Esophageal Stent during braiding by the support force of elasticity, in addition Esophageal Stent
It can facilitate by pipe nipple is pressed into bottom until being close to hollow metal pipe and take out Esophageal Stent after the completion of braiding.Cause
This, Esophageal Stent braiding tooling provided by the invention improves the support force to Esophageal Stent, avoids breaking by adjusting entire length
It splits or the appearance of fracture of wire problem ensure that the quality and efficiency of braiding Esophageal Stent, tool especially suitable for degradable Esophageal Stent
There is very high practical value.
Embodiment 6：
On the basis of embodiment 5, as shown in figure 11, the pipe nipple 203, rectangular tube 204 and spring 205 are one,
It is revolved respectively there are one nut 202 at the both ends of the screw rod 201；The position limiting structure is opened in 1 one end of hollow metal pipe
Round hole, the diameter of the round hole are less than the diameter of the spring 205, and what 1 the other end of the hollow metal pipe opened up is
Square hole, the rectangular tube 204 are inserted in across the square hole in the hollow metal pipe 1.
The present embodiment embodies the structure for adjusting Esophageal Stent length, and specifically, as shown in figure 11, screw rod 201 passes through
Hollow metal pipe 1, its top and bottom end are revolved respectively there are one nut 202, and top nut 202 is prevented to fix pipe nipple 203
Only it springs back after pressing, and bottom end nut 202 is the limit to screw rod 202 and positioning.
In use, first screwing the nut 202 of bottom end, if you need to adjust tooling length, pressing pipe nipple 203 is until it is moved down
To suitable position, then again the nut 202 on turn top until being adjacent to the top of pipe nipple 203；After Stent is complete, pressing is short
Section 203 with hollow metal pipe 1 on earth until be close to, and then the nut 202 on turn top is pasted up to the top of pipe nipple 203 again
Tightly, Esophageal Stent is removed.
Esophageal Stent provided in this embodiment weaves tooling, can pipe nipple, hollow metal pipe outer wall on weave rami esophagei
Frame is reserved with the distance of 2~5mm between pipe nipple and hollow metal pipe, can need to press pipe nipple, adjusting pipe nipple according to braiding
The distance between hollow metal pipe ensures Esophageal Stent during braiding by the support force of elasticity, in addition Esophageal Stent
It can facilitate by pipe nipple is pressed into bottom until being close to hollow metal pipe and take out Esophageal Stent after the completion of braiding.Cause
This, Esophageal Stent braiding tooling provided by the invention improves the support force to Esophageal Stent, avoids breaking by adjusting entire length
It splits or the appearance of fracture of wire problem ensure that the quality and efficiency of braiding Esophageal Stent, tool especially suitable for degradable Esophageal Stent
There is very high practical value.
Embodiment 7：
On the basis of embodiment 5, the scheme different from embodiment 6 is present embodiments provided, specifically, such as Figure 10 and figure
Shown in 13, the screw rod 201 wears pipe nipple 203, rectangular tube 204, spring 205 successively from two ends to its midpoint, described
It is revolved respectively there are one nut 202 at the both ends of screw rod 201；The inner cavity of the hollow metal pipe 1 is divided into three sections, epimere and the hypomere side of being
Shape channel, stage casing are cylindrical channels, and the aperture of the cylindrical channel is less than the aperture of square duct, and described cylindrical logical
Road forms step with the square duct junction, and two rectangular tubes 204 are respectively inserted in corresponding square duct, two springs
205 one end is against at corresponding step, and the other end is against the end face of corresponding rectangular tube 204, and two steps are two springs
205 position limiting structure.
As shown in Figure 10, pipe nipple 203, rectangular tube 204, spring 205 have two groups, two groups of middle point symmetries about screw rod 201
It is set on screw rod 201.When needing to adjust tooling length, the pipe nipple 203 of one end can be pressed or press the pipe nipple at both ends
203, it due to pipe nipple 203 and the connection of rectangular tube 204 or is integrally formed, pipe nipple 203 is slided with rectangular tube 204 along screw rod 201
Dynamic, spring 205 is compressed by the extruding of rectangular tube 204, and then it is adjustable so that the length for entirely weaving tooling is realized, when being adjusted to
When suitable position, fixed pipe nipple 203 in the position, continues to weave, and after the completion of braiding, pressable pipe nipple 203 is on earth until in
Empty metal tube 1 is close to, due to entire tooling length shorten and it is shorter than the length of Esophageal Stent, at this time can be easily by oesophagus
Holder is removed from tooling, time saving and energy saving.
It should be strongly noted that spring 205 may be one in the present embodiment, (the pipe nipple at both ends as shown in figure 12
203 receive pressing), i.e. two groups of pipe nipples 203 and rectangular tube 204 share a spring 205, and in other words, spring 205 is located at
Between upper and lower two rectangular tubes 204.
The both ends of screw rod 201 can be adjusted in the present embodiment, improve the flexibility for adjusting braiding tooling length so that
During weaving Esophageal Stent, corresponding pipe nipple can be pointedly pressed, and then realize the adjusting of tooling length, it is ensured that
The quality of braiding Esophageal Stent.
Embodiment 8：
On the basis of embodiment 5 or embodiment 6 or embodiment 7, the pipe nipple 203 and the rectangular tube 204 are along described
When screw rod 201 slides up and down, the spring 205 is in nature or compressive state, when the spring 205 in the raw
When, the distance between 203 lower face of the pipe nipple and 1 upper surface of the hollow metal pipe are 2~5mm.
In order to adapt to the braiding of each size Esophageal Stent, by test of many times, the present embodiment has obtained pipe nipple 203 in
Optimum distance between empty metal tube 1 is 2~5mm, is shunk so that it is rational, and smoothly removed after the completion of braiding.
Embodiment 9：
On the basis of embodiment 4, as shown in figure 14,4 circle blind holes are offered on the middle part outer wall of the hollow metal pipe 1
101 (being 6 rows in Figure 14, practical only to use 4 rows, in addition 2 rows are used for demarcating distance), the distance of two adjacent rings blind hole 101 is equal,
And the distance between two neighboring blind hole of each circle 101 is equal, and a lead screw is inserted in each blind hole 101.
Specifically, during weaving Esophageal Stent, the tooling of the present embodiment is in order to adapt to or be suitable for each volume
Organization method has opened up 4 circle blind holes 101 on the middle part outer wall of hollow metal pipe 1, when braiding, can be inserted into quarter butt or short silk
In blind hole 101, is then overlapped or intersected around the quarter butt or short silk according to specific weaving method, in blind hole 101
It is inside inserted with short silk or quarter butt, the segmentation of braided support is realized at short silk or quarter butt.
The quantity of rib on 203 outer wall of the hollow metal pipe 1 and the pipe nipple with the bracket end silk to be woven
The head number of line is identical.Specifically, when braiding Esophageal Stent, corresponding volume is selected according to the holder profile (diameter) to be woven
Weaver fills, and after the completion of final braiding, the end of each rib is wound with a silk thread.
Esophageal Stent weaves the application process of tooling, includes the following steps：
The nut 202 for screwing Esophageal Stent braiding tooling both ends, the one end for the silk thread for weaving Esophageal Stent is fixed on
Esophageal Stent weaves one end of tooling, and take up one's knitting Esophageal Stent, after the completion of Esophageal Stent braiding, presses pipe nipple 203, pipe nipple
203 and rectangular tube 204 slided along screw rod 201, compressed spring 205,203 lower face of pipe nipple and 1 upper surface of hollow metal pipe it
Between Distance Shortened, when foreshortening to required position, screw the nut 202 at the end, remove Esophageal Stent.
Specifically, Esophageal Stent is woven on the outer wall of pipe nipple 203 and hollow metal pipe 1, during braiding, such as occurred
The case where silk thread is tensioned, pressable pipe nipple 203 due to pipe nipple 203 and the connection of rectangular tube 204 or are integrally formed, 203 band of pipe nipple
It rectangular tube 204 to slide along screw rod 201, spring 205 is compressed by the extruding of rectangular tube 204, and then makes entire weaver
The length realization of dress is adjustable, and when being adjusted to suitable position, fixed pipe nipple 203 in the position, continues to weave, after the completion of braiding,
Pressable pipe nipple 203 with hollow metal pipe 1 on earth until be close to, since the length of entire tooling shortens and than Esophageal Stent
Length is short, can easily remove Esophageal Stent from tooling at this time, time saving and energy saving.
It should be strongly noted that hollow metal pipe 1 can be one shown in Figure 10 and Figure 11, can also be more
The multisection type retractable structure that hollow metal pipe 1 forms.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, do not describe one by one here.
Claims (10)
1. a kind of segmented Esophageal Stent, it is characterised in that：It is that both ends made of being woven by a monofilament are in bell-mouthed circle
Cylindricality network, the network are made of two sections of upper oared segrne pii and lower oared segrne pii, and the upper oared segrne pii is under
It is connected by several buckle structures between oared segrne pii.
2. segmented Esophageal Stent as described in claim 1, it is characterised in that：The buckle structure is by monofilament in upper loudspeaker
The decussate texture that mouth section end and lower oared segrne pii end junction lapping intersect to form.
3. segmented Esophageal Stent as claimed in claim 2, it is characterised in that：The upper oared segrne pii and lower oared segrne pii it
Between be equipped at least three buckle structures.
4. segmented Esophageal Stent as claimed in claim 2, it is characterised in that：The bell-mouthed angle is 40~50 °.
5. a kind of weaving method of segmented Esophageal Stent as described in any claim in Claims 1 to 4, feature exist
In including the following steps：
Step 1：The middle part that tooling is woven in Esophageal Stent beats blind hole (101) and is inserted into lead screw in blind hole (101)；
Step 2：One end of monofilament is fixed on the head that Esophageal Stent weaves any one end of tooling, the other end is being eaten
Pipe holder weaver loads onto the webbed upper oared segrne pii of overlapping cross winding shape and lower oared segrne pii, monofilament lapping at lead screw
Cross winding forms criss-cross buckle structure；
Step 3 weaves at least three buckle structures according to the weaving method of step 2；
Step 4, after the completion of braiding, to two ports of segmented Esophageal Stent carry out thermal finalization form it into flaring for 40~
50 ° of horn mouth completes the braiding of segmented Esophageal Stent.
6. the weaving method of segmented Esophageal Stent as claimed in claim 5, it is characterised in that：The Esophageal Stent weaver
Dress includes the hollow metal pipe (1) of cylinder, further includes screw rod (201), pipe nipple (203), rectangular tube (204) and spring (205),
The pipe nipple (203), rectangular tube (204) and spring (205) are set on successively from top to bottom on screw rod (201), the screw rod
(201) hollow metal pipe (1) is passed through, is equipped with position limiting structure in the hollow metal pipe (1), the one of the spring (205)
End is limited by position limiting structure, and the other end is against the end face of the rectangular tube (204), the outer diameter of the pipe nipple (203) with it is described in
The outer diameter of empty metal tube (1) is identical, and the inner cavity of the hollow metal pipe (1) is square duct, and rectangular tube (204) cooperation is interspersed in
In the square duct of hollow metal pipe (1), the pipe nipple (203) is fixedly connected with the rectangular tube (204) or is integrally formed simultaneously
It can be slided along the screw rod (201)；
It is circumferential on the outer wall of the hollow metal pipe (1) and the pipe nipple (203) to be evenly spaced equipped with several ribs, and in
Rib on empty metal tube (1) is corresponded with the rib on pipe nipple (203).
7. the weaving method of segmented Esophageal Stent as claimed in claim 6, it is characterised in that：It is the pipe nipple (203), rectangular
It is one to manage (204) and spring (205), the both ends of the screw rod (201) revolve respectively there are one nut (202)；
The position limiting structure is the round hole for being opened in hollow metal pipe (1) one end, and the diameter of the round hole is less than described
The diameter of spring (205), what described hollow metal pipe (1) the other end opened up is square hole, and the rectangular tube (204) passes through institute
Square hole is stated to be inserted in the hollow metal pipe (1).
8. the weaving method of segmented Esophageal Stent as claimed in claim 6, it is characterised in that：The screw rod (201) is from two
A end wears pipe nipple (203), rectangular tube (204), spring (205), the both ends of the screw rod (201) successively to its midpoint
There are one nuts (202) for rotation respectively；
The inner cavity of the hollow metal pipe (1) is divided into three sections, and epimere and hypomere are square ducts, and stage casing is cylindrical channel, institute
The aperture for stating cylindrical channel is less than the aperture of square duct, and the cylindrical channel is formed with the square duct junction
Step, two rectangular tubes (204) are respectively inserted in corresponding square duct, and one end of two springs (205) is against corresponding
At rank, the other end is against the end face of corresponding rectangular tube (204), and two steps are the position limiting structure of two springs (205).
9. the weaving method of the segmented Esophageal Stent as described in claim 6 or 7 or 8, it is characterised in that：The pipe nipple
(203) when and the rectangular tube (204) is slided up and down along the screw rod (201), the spring (205) is in nature or compression
State, when the spring (205) in the raw when, pipe nipple (203) lower face and the hollow metal pipe (1) upper end
The distance between face is 2~5mm.
10. the weaving method of segmented Esophageal Stent as claimed in claim 9, it is characterised in that：The hollow metal pipe (1)
Middle part outer wall on offer 4 circle blind holes (101), the distance of two adjacent rings blind hole (101) is equal, and it is each circle it is two neighboring blind
The distance between hole (101) is equal, and a lead screw is inserted in each blind hole (101)；The hollow metal pipe (1) and described short
The quantity for saving the rib on (203) outer wall is identical as the head number of bracket end silk thread to be woven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047146.6A CN108771572B (en) | 2018-09-09 | 2018-09-09 | Sectional type esophagus support and braiding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811047146.6A CN108771572B (en) | 2018-09-09 | 2018-09-09 | Sectional type esophagus support and braiding method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108771572A true CN108771572A (en) | 2018-11-09 |
| CN108771572B CN108771572B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811047146.6A Active CN108771572B (en) | 2018-09-09 | 2018-09-09 | Sectional type esophagus support and braiding method thereof |
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| CN (1) | CN108771572B (en) |
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| WO2023116009A1 (en) * | 2021-12-24 | 2023-06-29 | 微创优通医疗科技(嘉兴)有限公司 | Stent and stent weaving method |
| CN116687625A (en) * | 2023-08-08 | 2023-09-05 | 上海心纪元医疗科技有限公司 | Bracket for polymer valve and manufacturing method thereof |
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| CN108771572B (en) | 2023-09-29 |
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