CN209154642U - Self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe - Google Patents
Self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe Download PDFInfo
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- CN209154642U CN209154642U CN201820836542.6U CN201820836542U CN209154642U CN 209154642 U CN209154642 U CN 209154642U CN 201820836542 U CN201820836542 U CN 201820836542U CN 209154642 U CN209154642 U CN 209154642U
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- bracket
- biliary tract
- shape memory
- inflated
- memory alloy
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Abstract
The utility model proposes self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, including drainage tube and the bracket prepared by memorial alloy, the tube wall of drainage tube is equipped with side opening；Bracket has integrally formed straight pipe, left support and right support, and left support and right support are oppositely arranged on the top of straight pipe, and the bottom of straight pipe and the top of drainage tube connect；Bracket is in sizing state under body temperature, and left support and right support angle are 50 °~60 °, and straight pipe diameter is 4mm~6mm, and stent length is 3cm~5cm, and bracket is integrally Y-shaped.Support section using the bracket of memorial alloy preparation as drainage tube front end, utilize the shape memory function of memorial alloy, enable to bracket under body temperature, expanded by heating stretcher strain, radial support power is generated on biliary tract inner wall, for soft radial expansion force to biliary tract without contention effect, left support and right support angle are 50 °~60 °, it can be stably fixed at left and right common hepatic duct crotch, to prevent bracket from slipping.
Description
Technical field
The utility model relates to drainage tubes, and in particular to a kind of self-expansion type ti-ni shape memory alloy woven mesh biliary tract support
Drainage tube.
Background technique
In clinical position, when we run into Cholangio- jejunostomy often, bile duct diameter is meticulous (diameter < 8mm), direct choledochus
When intestinal anastomosis, early postoperation is easy to appear leak, and induces the severe complications such as biliary peritonitis, pyemia, and at a specified future date
It is easy to appear Cholangio- jejunostomy stenostomia, and uses common T pipe as drainage support tube, it is postoperative to be easy to appear the slippage of T pipe, biliary tract
Infection merges the complication such as calculus of bile duct.
Utility model content
The purpose of this utility model is to provide the supporting drainage pipe with ti-ni shape memory alloy shape memory, specifically
Ground, self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe are convenient and simple and postoperative not eely with pipe is set
Effect.
To achieve the above object, the utility model proposes self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage
Pipe, including drainage tube and the bracket prepared by memorial alloy, the tube wall of drainage tube is equipped with side opening；
Wherein, bracket has integrally formed straight pipe, left support and right support, and left support and right support are oppositely arranged on
The top of straight pipe, the bottom of straight pipe and drainage tube top are connected；At a temperature of the bracket is in body temperature, left support and the right side
Bracket angle is 50 °~60 °, and straight pipe diameter is 4mm~6mm, and stent length is 3cm~5cm, and bracket is integrally Y-shaped.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, when the bracket
In at 0~20 DEG C, left support and right support angle are 0 °, and straight pipe diameter is 2mm, and stent length is not more than 2cm, bracket
Whole is in tubular.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, in body temperature temperature
Under, the left support length is greater than right support length.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the left support
Length is 8mm~10mm；Right support length is 5mm~8mm.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the bracket table
Face is coated with antibiotic layer.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the antibiotic layer
Inside it is evenly equipped with the Donisolone of sustained release.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the left support
Opening is arc-shaped at the top of straight pipe with right support.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the side opening
Aperture is 0.2cm~0.3cm.
Preferably, in the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, the straight pipe
Bottom is equipped with annular positioning groove, and the top of drainage tube is embedded in the annular positioning groove, and under body temperature, the inner ring of annular positioning groove is swollen
Swollen to contradict with drainage tube inner sidewall, outer ring is shunk to be contradicted with drainage tube lateral wall.
Compared with prior art, the utility model has the beneficial effects that using the bracket of memorial alloy preparation as drainage tube
The support section of front end enables to bracket under body temperature using the shape memory function of memorial alloy, and expanded by heating is drawn
Deformation is stretched, radial support power is generated on biliary tract inner wall, soft radial expansion force is to biliary tract without contention effect, left support and the right side
Bracket angle is 50 °~60 °, left and right common hepatic duct crotch can be stably fixed at, to prevent bracket from slipping.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model biliary tract supporting drainage pipe；
Fig. 2 is that bracket softens state structural schematic diagram；
Fig. 3 is the A-A cross-sectional view of Fig. 2.
1- drainage tube, 2- bracket, 11- side opening, 21- straight pipe, 22- left support, 23- right support, the arc-shaped opening of 24-,
25- annular positioning groove, 25a- inner ring, the outer ring 25b-.
Specific embodiment
Below in conjunction with schematic diagram to the self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage of the utility model
Pipe is described in more detail, and which show the preferred embodiments of the utility model, it should be appreciated that those skilled in the art can
To modify the utility model described herein, and still realize the advantageous effects of the utility model.Therefore, following description should be by
It is interpreted as the widely known of those skilled in the art, and is not intended as limitations of the present invention.
Please participate in shown in Fig. 1 to Fig. 3, for the utility model proposes technical solution.
Self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, including 1 two parts of bracket 2 and drainage tube.
Bracket 2 has integrally formed straight pipe 21, left support 22 and right support 23.Left support 22 and right support 23 are opposite
The top of straight pipe 21 is set, and the bottom of straight pipe 21 is connected with the top of drainage tube 1.Drainage tube 1 uses common rubber
The pipeline of material, length are about 20cm, diameter about 6mm.Drainage tube 1 is drawn by enteron aisle, and 1 part of drainage tube in enteron aisle has
One side opening 11, side opening 11 are generally located at the about 5cm of 1 connecting pin of drainage tube, the diameter of side opening 11 be 0.2cm~
0.3cm, preferably 0.3cm do not restore intestinal juice when enterocinesia in enteric cavity convenient for draining, and mitigate the tension of Cholangio- jejunostomy mouth.
In the prior art, biliary tract rack is chiefly used in malignant tumour advanced stage there are the patient of obstruction of biliary tract, patient survivals
Short (generally less than 6 months or even shorter), bracket is left permanently in vivo, and the utility model proposes supporting drainage Guan Suoying
Patient, Most patients time-to-live will be greater than 6 months, and bracket belongs to foreign matter for patients, and Preserving time is in gallbladder
Can cause in road such as bile duct infection, calculus of bile duct even canceration the problems such as, therefore, bracket is in vivo after indwelling 6 months or so,
It needs to extract.
For the ease of setting pipe and extraction, bracket 2 is using the ti-ni shape memory alloy with double-pass memory effect.It is setting pipe and is taking
When pipe operates, bracket 2 is cooled down at 0~20 DEG C first, is at low-temperature phase, under low-temperature phase shape, bracket 2
Whole cylindrical, left support 22 and the disappearance of 23 angle of right support are 0 °, and 21 diameter of straight pipe is punctured into 2mm, the contracting of 2 length of bracket
Short is to easily facilitate no more than 2cm and set pipe and extraction.
After bracket 2 is placed in vivo, in 36 DEG C~37 DEG C of body temperature environment, about 20min or so, bracket 2 will heat up
Restore its high-temperature-phase shape.Under high-temperature-phase shape, it is 50 °~60 ° that left support 22 and right support 23, which are gradually opened in angle,
Small Y type, bracket 2 is whole Y-shaped, and 21 diameter expansion of straight pipe is 4mm~6mm, and extending 2 length of bracket is 3cm~5cm.?
Cholangio- jejunostomy position is played a supporting role, and bracket 2 can be formed according to personal biliary tract situation.Bracket 2 can be to producing on biliary tract inner wall
Raw radial support power is less than 6N, soft radial expansion force, to biliary tract without contention effect, with excellent biocompatibility and
Corrosion resistance.In addition, the supporting drainage pipe has good super-elasticity under body temperature, can wriggle and fluctuating wave with normal biliary tract
It is dynamic, so that biliary tract had not only been kept clear but also without discomfort.
21 bottom of straight pipe of bracket 2 is equipped with annular positioning groove 25, and length is about 1cm, the annular positioning groove 25 and straight tube
Section 21 is integrally formed.The top of drainage tube 1 is embedded between the inner ring 25a of the annular positioning groove 25 and outer ring 25b.Annular positioning groove
25 use Ti-Ni marmem, and at 36 DEG C~37 DEG C of body temperature, the inner ring 25a and outer ring 25b of annular positioning groove 25 will
To an aid power is applied inside and outside the tube wall of drainage tube 1 simultaneously, so that drainage tube 1 to be fixed on to the bottom end of bracket 2.Specifically,
Inner ring 25a will be expanded to be contradicted with 1 inner wall of drainage tube, and outer ring 25b is shunk to be contradicted with 1 lateral wall of drainage tube.
Drainage tube 1 is embedded in annular positioning groove 25 first, is then warming up to body temperature to the connecting portion, makes by operation consent
Inner ring 25a expansion is obtained, outer ring 25b is shunk, and drainage tube 1 is firmly fixed to the lower section of bracket 2, and make bracket 2 and drainage
1 junction better tightness of pipe.Bracket 2 and drainage tube 1 are interconnected, and flow into enteron aisle convenient for bile.It is completed when bracket 2 is placed in
Afterwards, in body temperature environment, annular positioning groove 25 have high-temperature-phase shape memory, 6 middle of the month for setting pipe can firmly with branch
Frame 1 connects.
It when extracting bracket 2, needs to inject 10 degree or so of cold water into drainage tube 1, keeps the cooling of bracket 2 of its front end extensive
Multiple low-temperature phase shape, it is cylindrical, so that bracket 2 is easy to take out from choledochus.
When extracting bracket 2, if drainage tube 1 is separated with bracket 2, bracket 2, which falls off, to be stayed in enteron aisle, is needed by gastroscope
The bracket 2 being located in enteron aisle is taken out, the risk and extra charge for taking out bracket 2 is considerably increased, not only increases the pain of patient
Hardship also increases the medical burden of patient.In addition, after patient has done Cholangio- jejunostomy operation, since normal anatomical passageway changes,
Gastroscope operation enforcement difficulty increases.
Therefore, in order to guarantee during extracting bracket 2, avoiding annular positioning groove 25, cooling strain causes to drain after water to the cold
Pipe 1 falls off from bracket 2, annular positioning groove 25 it is cooling restore to low-temperature phase shape phase transition temperature will lower than bracket 2 remaining
Part is cooling to restore to the phase transition temperature of low-temperature phase shape, for example, cooling of the bracket 2 except the rest part of annular positioning groove 25
Restore to the phase transition temperature of low-temperature phase shape to be 0~20 DEG C, the cooling of annular positioning groove 25 restores to the phase transformation of low-temperature phase shape
Temperature is -5 DEG C.I.e. during surgery, when cylindrical with 10 DEG C of cold water cooling holder 2, deformation occurs for annular positioning groove 25,
Drainage tube 1 is still firmly fixed on to the bottom of bracket 2, when so that extracting bracket 2, drainage tube 1 is extracted together.In addition, ring
Shape locating slot 25 can also use the Ultimum Ti of one-way memory effect, if that is, without outer masterpiece after the cooling of high-temperature-phase shape
With high-temperature-phase shape is still maintained, when extracting bracket 2 to reach, guarantee that drainage tube 1 is securely attached to together with bracket 2.
In addition, drainage tube 1 and bracket 2 or integrated molding.And the design scheme of annular positioning groove 25 is used, it can be with
Before surgery, the bracket 2 and drainage tube 1 of different model are selected, is integrated them according to different patients by doctor, be applicable in
Property is more extensive.
Under high-temperature-phase shape, i.e., under body temperature, bracket 2 is in small Y shape, can be fixed on left and right common hepatic duct crotch.As preferred
Embodiment, left support 22 and right support 23 are arc-shaped opening 24, i.e. left support 22 and right support 23 at the top of straight pipe 21
In the 21 arc-shaped transition in top of straight pipe, and left support 22 and 23 angle of right support are 50 °~60 °, it is therefore preferable to 53 °, 55 °
Or 57 °.Since the left common hepatic duct of human body is elongated, therefore right common hepatic duct tubbiness in the present embodiment, is greater than the right side using 22 length of left support
The design of 23 length of bracket, it is preferable that 22 length of left support is 8mm~10mm；23 length of right support is 5mm~8mm, Ke Yiyou
Prevent to effect the damage to biliary tract wall.
2 surface of bracket is coated with antibiotic layer, and the very high trichlorine raw compounds of purity are added in coating, forms three-dimensional antibacterial area,
So as to effectively inhibit staphylococcus aureus, staphylococcus epidermis, drug-resistant staphylococcus aureus, drug resistance form staph and Escherichia coli
The growth of equal bacteriums, can prevent bacterium infection, and bracket 2 caused by gallbladder mud deposition blocks.Preferably, it is evenly equipped in antibiotic layer slow
The Donisolone (such as Limethason injection of Guangzhou green cross pharmaceutical Co. Ltd production) released, sugar
Cortin dosage is less, can inhibit the bile duct inflammatory reaction around bracket 2, reduce Cholangio- jejunostomy at a specified future date to a certain extent
The incidence of stenostomia.
The phase transition temperature of memory alloy material can be adjusted by changing titanium nickel adding proportion and other adding ingredients
Therefore section can customize the memory alloy material being adapted with the utility model phase transition temperature.Memory alloy material belongs to existing
Technology is not belonging to the inventive point of the utility model, as memorial alloy can use Xi'an Saite Metal Material Development Co., Ltd.
The Nickel-titanium alloy for medical purpose of production.The utility model merely with ti-ni shape memory alloy in the prior art shape memory function, if
Count out the not eely biliary tract supporting drainage pipe of bracket.
To sum up, in self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe provided by the embodiment of the utility model
In, using support section of the bracket as drainage tube front end of memorial alloy preparation, using the shape memory function of memorial alloy,
Enable to bracket under body temperature, expanded by heating stretcher strain generates radial support power, soft diameter on biliary tract inner wall
To expansionary force to biliary tract without contention effect, left support and right support angle are 50 °~60 °, can be stably fixed at left and right common hepatic duct point
At fork, to prevent bracket from slipping.
The preferred embodiment that above are only the utility model, does not play the role of any restrictions to the utility model.
Any person of ordinary skill in the field, in the range of not departing from the technical solution of the utility model, to the utility model
The technical solution and technology contents of exposure make the variation such as any type of equivalent replacement or modification, belong to without departing from the utility model
Technical solution content, still fall within the protection scope of the utility model.
Claims (9)
1. a kind of self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe, which is characterized in that including drainage tube (1) and
The tube wall of the bracket (2) prepared by memorial alloy, drainage tube (1) is equipped with side opening (11)；
Wherein, bracket (2) has integrally formed straight pipe (21), left support (22) and a right support (23), left support (22) and
Right support (23) is oppositely arranged on the top of straight pipe (21), is connected at the top of the bottom of straight pipe (21) and drainage tube (1)；Work as institute
It states bracket (2) to be at a temperature of body temperature, left support (22) and right support (23) angle are 50 °~60 °, and straight pipe (21) diameter is
4mm~6mm, bracket (2) length are 3cm~5cm, and bracket (2) is whole Y-shaped.
2. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 1, which is characterized in that
When the bracket (2) are at 0~20 DEG C, left support (22) and right support (23) angle are 0 °, and straight pipe (21) diameter is
2mm, bracket (2) length are not more than 2cm, and bracket (2) is integrally in tubular.
3. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 1, which is characterized in that
At a temperature of body temperature, left support (22) length is greater than right support (23) length.
4. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 3, which is characterized in that
Left support (22) length is 8mm~10mm；Right support (23) length is 5mm~8mm.
5. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 1, which is characterized in that
Bracket (2) surface is coated with antibiotic layer.
6. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 5, which is characterized in that
The Donisolone of sustained release is evenly equipped in the antibiotic layer.
7. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 1, which is characterized in that
The left support (22) and right support (23) are arc-shaped opening (24) at the top of straight pipe (21).
8. self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe according to claim 1, which is characterized in that
The aperture of the side opening (11) is 0.2cm~0.3cm.
9. described in any item self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipes according to claim 1~8,
It is characterized in that, straight pipe (21) bottom is equipped with annular positioning groove (25), and the top of drainage tube (1) is embedded in the annular positioning groove
(25) in, under body temperature, inner ring (25a) expansion and drainage tube (1) inner sidewall of annular positioning groove (25) are contradicted, outer ring (25b)
It shrinks and is contradicted with drainage tube (1) lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820836542.6U CN209154642U (en) | 2018-05-31 | 2018-05-31 | Self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820836542.6U CN209154642U (en) | 2018-05-31 | 2018-05-31 | Self-inflated ti-ni shape memory alloy woven mesh biliary tract supporting drainage pipe |
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| CN209154642U true CN209154642U (en) | 2019-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112807493A (en) * | 2020-12-31 | 2021-05-18 | 山东第一医科大学附属省立医院(山东省立医院) | Biliary tract implant and manufacturing method thereof |
-
2018
- 2018-05-31 CN CN201820836542.6U patent/CN209154642U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112807493A (en) * | 2020-12-31 | 2021-05-18 | 山东第一医科大学附属省立医院(山东省立医院) | Biliary tract implant and manufacturing method thereof |
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