CN107981907A - A kind of tissue folder of threaded engagement - Google Patents
A kind of tissue folder of threaded engagement Download PDFInfo
- Publication number
- CN107981907A CN107981907A CN201711475171.XA CN201711475171A CN107981907A CN 107981907 A CN107981907 A CN 107981907A CN 201711475171 A CN201711475171 A CN 201711475171A CN 107981907 A CN107981907 A CN 107981907A
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- China
- Prior art keywords
- clamp arm
- thread
- tissue folder
- folder
- tissue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 13
- 239000004626 polylactic acid Substances 0.000 claims abstract description 13
- 239000002861 polymer material Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 5
- 210000004204 blood vessel Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000002439 hemostatic effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010417 needlework Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003190 augmentative effect Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 201000001352 cholecystitis Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000023597 hemostasis Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 206010049704 Gallbladder polyp Diseases 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000002192 cholecystectomy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000232 gallbladder Anatomy 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 208000013976 polyp of gallbladder Diseases 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/122—Clamps or clips, e.g. for the umbilical cord
- A61B17/1227—Spring clips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention is a kind of tissue folder of threaded engagement, moulded and formed by absorbable polymer material, including the first clamp arm and the second clamp arm by elastic hinge connection, first clamp arm and the second clamp arm is arcuate structure and radian mutually coincide, first clamp arm and second clamp arm are provided with the component of threaded engagement in internal face, and when clamp arm clamping can realize thread seal.The engagement of the concaveconvex structure of the tissue folder of first clamp arm and the second clamp arm of the invention compared with prior art, pass through threaded engagement, organize the shearing force of folder big, frictional force also greatly improves, the offset that can effectively prevent tissue from pressing from both sides, the polylactic acid with certain shrinking percentage is selected to increase tissue folder friction coefficient as absorbable material, increase anti-slip power.
Description
Technical field
The present invention relates to a kind of medical instrument, and in particular to a kind of tissue folder of threaded engagement.
Background technology
Tissue folder, also known as blood vessel clip, ligation clip, hemostatic clamp, in surgical operation (mainly minimally invasive laparoscopic surgery)
Folder closes blood vessel and pipeline tissue.Such as it is used for folder in cholecystitis, calculous cholecystitis, gallbladder polyps patient's cholecystectomy and closes gall-bladder
Pipe and cystic artery, play hemostasis, ligation closure function.The blood vessel of early stage or the common method of tissue ligation are that needlework coincide,
But needlework coincide there are the defects of blood vessel internal membrane damage is larger, anastomosis procedure is complicated, time-consuming long etc. inevitable, therefore from blood
The trend that gradually substituted needlework coincide since pipe clamp comes out.Initial blood vessel clip based on metal material, as titanium folder, silver brain clip,
Stainless steel clamp etc., such blood vessel clip is although cheap, easy to use, but tends to occur loosening, vacillating, coming off too early
Phenomenon, and can the postoperative optical image diagnosis of interference effect in indwelling body;As thyrite good fortune company in 1999 releases Brunswick folder, no
Absorbable clips are opened up markets gradually, become a kind of new selection mode of tissue ligation, and Brunswick folder is improved from structure design
Occur phenomena such as loosening, vacillating or come off too early, also diagnosing without interference with the postoperative optical image of influence in indwelling body, but it is long
Potential hazard can be still produced in phase indwelling body.Recently as the development of absorbable material, absorbable biological folder enters the market gradually, but
Current Absorbable clips still suffer from insufficient Pressure value, anti-slip power deficiency, laparoscope clamp process easily shift etc. it is a variety of
Problem.
US7326223 discloses ligation clip (the LIGATING CLIP WITH INTEGRAL with integral cutting guide rail
CUTTING GUIDE), it is two arm configuration of V bifurcateds to specifically disclose hemostatic clamp, by safe catching lock, elastic hinge, arcuate nail leg
(clamp), integrated anti-slop serrations and five part of knuckle composition.But some problems are still suffered from use, it is mainly manifested in firmly
Property not enough, blood folder use during occur locking position slip, easily deviate.
203776976 U of CN disclose a kind of hemostatic clamp of anti-dropout, specifically disclose including be arcuate structure
One clamp arm and the second clamp arm, using elastic hinge connection, free end is the buckle structure to cooperate, is led to for one end of two clamp arm
It is negative and positive fastening structure to cross one group, the secure latch being mutually locked, to improve fastness.203776975 U of CN disclose one kind
Hemostatic clamp, the inner surface for specifically disclosing arcuate two-arm are corresponding concaveconvex structure, easy to the engagement of two-arm, make to be pressed from both sides to close blood vessel
Or pipeline tissue can be closed firmly;By the taper rack of the convex on male and fomale(M&F), increasing friction coefficient, anti-sliding takes off,
The effect of hemostasis and anti-leak can be better achieved.However, the effect of the hemostatic clamp practical application of above two anti-dropout has
Limit.
To sum up, the prior art still lacks a kind of anti-offset tissue folder that can meet absorbable material, disclosure satisfy that clinic
Demand.
The content of the invention
The object of the present invention is to provide a kind of tissue folder of threaded engagement, pass through thread seal increasing friction force, Neng Gouyou
Effect prevents tissue folder offset, disclosure satisfy that the demand of clinic, concrete technical scheme is as follows:
A kind of tissue folder of threaded engagement, is moulded by absorbable polymer material and formed, including connected by elastic hinge
The first clamp arm and the second clamp arm connect, first clamp arm and the second clamp arm are arcuate structure and radian mutually coincide,
The free end of first clamp arm is arranged to hook portion, and the free end of second clamp arm is arranged to and the matched hook of the hook portion
Groove, the outer surface of the first clamp arm free end are provided with the first knuckle, the both ends of the groove, the axis pair with the second clamp arm
Title is provided with two the second cylindrical knuckles, and the elasticity hinge is provided with hinge gap, first clamp arm and described the
Two clamp arm are provided with the component of threaded engagement that can be cooperated in internal face, and when clamp arm clamping can realize thread seal.
Thread groove is the recessed internal thread for being arranged on the second clamp arm internal face, internal thread and the thread in thread protrusion
Configuration is consistent and cooperates, and the engagement of thread seal middle concaveconvex structure compared with prior art, shearing force is big, and frictional force is also significantly
Improve, the offset that can effectively prevent tissue from pressing from both sides.
Preferably, row's thread protrusion and described second that the component is set as described in the first clamp arm on center line
The thread groove being mutually the engaged composition that the corresponding position of clamp arm is set.In center line, one row's screw thread is set, can be in center line
Form thread seal thread.
Preferably, the thread of the thread protrusion is highly the 1/5-1/2 of the first clamp arm thickness;Thread nominal is straight
Footpath is the 1/3-3/4 of the first clamp arm width.The height of thread H of thread protrusion and pitch P are there are relation, angle of thread α,
Then H=Psin α, it is preferred that 60 DEG C of angle of thread α, then H=0.866P.
Preferably, the thread protrusion is single thread.Single thread (is not easy to slide since its helix angle is smaller
It is dynamic), it is larger (having from trivial ability) that screw and nut screw the frictional force to be formed, and sealing effect is good during threaded engagement.
Preferably, the component is by two rows of screw threads for being set along the clamp arm center line both sides of the first clamp arm internal face
The mutually occlusion thread groove composition that raised and described second clamp arm internal face is set.Two rows of screw threads are compared to row's screw thread shearing force more
Greatly, frictional force also bigger, the offset that can effectively prevent tissue from pressing from both sides.
Preferably, the spiral shell that the component is set by the first clamp arm internal face along clamp arm center line in center line side
The thread groove that line is raised, opposite side is set, and the second clamp arm internal face are setting with the first clamp arm internal face
The mutually thread protrusion of occlusion and thread groove composition.Two rows of thread seals can have different design methods.
Preferably, the thread of the thread protrusion is highly the 1/10-1/5 of the first clamp arm thickness;Thread nominal diameter
For the 1/6-1/3 of the first clamp arm width.
Preferably, the thread protrusion is single thread.Single thread (is not easy to slide since its helix angle is smaller
It is dynamic), it is larger (having from trivial ability) that screw and nut screw the frictional force to be formed, and sealing effect is good during threaded engagement.
Preferably, the absorbable polymer material is polylactic acid, the polylactic acid molecule amount is distributed as 38-60
Ten thousand, viscosity 2.6-3.8.Select suitable molecular weight and viscosity, can reinforcing material performance.
Preferably, the polylactic acid shrinking percentage is 0.01-2%.Select the macromolecule material with certain shrinking percentage
Material, augmenting tissue folder friction coefficient, increases anti-slip power.
Beneficial effects of the present invention have:
(1) first clamp arm and the second clamp arm pass through threaded engagement, the engagement of middle concaveconvex structure compared with prior art, tissue
The shearing force of folder is big, and frictional force also greatly improves, the offset that can effectively prevent tissue from pressing from both sides;
(2) polylactic acid can be degraded in people's body absorption as absorbable polymer material, the molecular weight of polylactic acid and viscous
Spend it is proper, can reinforcing material performance;
(3) polylactic acid has certain shrinking percentage, it is possible to increase tissue folder friction coefficient, increases anti-slip power.
Brief description of the drawings
1 three dimensional structure diagram of Fig. 1 embodiments;
2 three dimensional structure diagram of Fig. 2 embodiments;
Reference numeral:First clamp arm 1, the second clamp arm 2, elastic hinge 3, the first knuckle 4, hinge gap 5, hook portion 6, groove
7th, the second knuckle 8, thread protrusion 9, thread groove 10.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings:
Embodiment 1
A kind of tissue folder of threaded engagement, forms, including pass through as shown in Figure 1, being moulded by absorbable polymer material
The first clamp arm 1 and the second clamp arm 2 that elastic hinge 3 connects, first clamp arm 1 and the second clamp arm 2 be arcuate structure simultaneously
And radian mutually coincide, the free end of first clamp arm 1 is arranged to hook portion 6, the free end of second clamp arm 2 be arranged to
The matched hook groove 7 of hook portion 6, the outer surface of 1 free end of the first clamp arm are provided with the first knuckle 4, the groove 7
Both ends, be provided with two the second cylindrical knuckles 8 with the axisymmetrical of the second clamp arm 2, and the elasticity hinge 3 is provided with hinge
Gap 5, first clamp arm 1 and second clamp arm 2 are provided with the component for the threaded engagement that can be cooperated, folder in internal face
Thread seal can be realized during arm clamping.Thread groove 10 is to be arranged on the recessed internal thread of 2 internal face of the second clamp arm, internal thread
And mutual cooperation consistent with the thread configuration in thread protrusion 9.The engagement of thread seal middle concaveconvex structure compared with prior art, cuts
Shear force is big, and frictional force is also compared to increase, the offset that can effectively prevent tissue from pressing from both sides.
As shown in Figure 1, the component is by row's thread protrusion 9 for being set on 1 center line of the first clamp arm and described
The thread groove 10 being mutually engaged that second clamp arm, 2 corresponding position is set forms.In center line, one row's screw thread, Ke Yi are set
Center line forms thread seal thread.The absorbable polymer material is polylactic acid, and the polylactic acid molecule amount is distributed as
38-60 ten thousand, viscosity 2.6-3.8.Select suitable molecular weight and viscosity, can reinforcing material performance.The polylactic acid
Shrinking percentage is 0.01-2%.The high molecular material with certain shrinking percentage is selected, augmenting tissue folder friction coefficient, increases anti-slip
Power.The thread of the thread protrusion 9 is highly the 1/5-1/2 of 1 thickness of the first clamp arm;Thread nominal diameter is wide for the first clamp arm 1
The 1/3-3/4 of degree.The thread protrusion 9 is single thread, and single thread is since its helix angle is smaller (being not easy to slide), spiral shell
It is larger (having from trivial ability) that silk and nut screw the frictional force to be formed, and sealing effect is good during threaded engagement.
Embodiment 2
The present embodiment is only described with implementing 1 difference.
The component is to be provided with two rows of thread protrusions 9, institute along the clamp arm center line both sides of 1 internal face of the first clamp arm
State 2 internal face of the second clamp arm and be provided with mutually occlusion thread groove 10.Two rows of screw threads compare row's screw thread shearing force bigger, frictional force
Also bigger, the offset that can effectively prevent tissue from pressing from both sides.The thread of the thread protrusion 9 is highly the 1/ of 1 thickness of the first clamp arm
10-1/5;Thread nominal diameter is the 1/6-1/3 of 1 width of the first clamp arm.
Embodiment 3
The present embodiment is only described with implementing 1 difference.
The thread of the thread protrusion 9 is highly the 1/3 of 1 thickness of the first clamp arm;Thread nominal diameter is wide for the first clamp arm 1
The 3/4 of degree, the height of thread H of thread protrusion and pitch P are there are relation, angle of thread α, then H=Psin α, it is preferred that screw thread
Angle [alpha] is 60 DEG C, then H=0.866P.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula make a change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although used in this specification
Some specific terms, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (10)
1. the tissue folder of a kind of threaded engagement, it is characterised in that moulded and formed by absorbable polymer material, including pass through bullet
The first clamp arm and the second clamp arm of property hinge connection, first clamp arm and the second clamp arm are arcuate structure and radian phase
Mutually it coincide, the free end of first clamp arm is arranged to hook portion, and the free end of second clamp arm is arranged to and the hook portion phase
The hook groove of cooperation, the outer surface of the first clamp arm free end are provided with the first knuckle, both ends of the groove, with the second clamp arm
Axisymmetrical be provided with two the second cylindrical knuckles, the elasticity hinge is provided with hinge gap, first clamp arm
It is provided with the component of threaded engagement that can be cooperated in internal face with second clamp arm, when clamp arm clamping can realize that screw thread is close
Envelope.
2. tissue folder as claimed in claim 1, it is characterised in that the component is set as described in the first clamp arm on center line
The thread groove being mutually the engaged composition that sets of corresponding with second clamp arm position of row's thread protrusion.
3. tissue folder as claimed in claim 2, it is characterised in that the thread of the thread protrusion is highly first clamp arm
The 1/5-1/2 of thickness;Thread nominal diameter is the 1/3-3/4 of the first clamp arm width.
4. tissue folder as claimed in claim 2, it is characterised in that the thread protrusion is single thread.
5. tissue folder as claimed in claim 1, it is characterised in that the component is by the clamp arm along the first clamp arm internal face
The mutually occlusion thread groove composition that the two rows of thread protrusions and the second clamp arm internal face that center line both sides are set are set.
6. tissue folder as claimed in claim 1, it is characterised in that the component is by the first clamp arm internal face along clamp arm
The thread groove that thread protrusion that heart line is set in center line side, opposite side are set, and the second clamp arm internal face are set
The thread protrusion being mutually engaged with the first clamp arm internal face and the thread groove composition put.
7. tissue folder as described in claim 4 or 5, it is characterised in that the thread of the thread protrusion is highly described first
The 1/10-1/5 of clamp arm thickness;Thread nominal diameter is the 1/6-1/3 of the first clamp arm width.
8. tissue folder as described in claim 4 or 5, it is characterised in that the thread protrusion is single thread.
9. tissue folder as claimed in claim 1, it is characterised in that the absorbable polymer material is polylactic acid, described
Polylactic acid molecule amount is distributed as 38-60 ten thousand, viscosity 2.6-3.8.
10. tissue folder as claimed in claim 9, it is characterised in that the polylactic acid shrinking percentage is 0.01-2%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711475171.XA CN107981907A (en) | 2017-12-29 | 2017-12-29 | A kind of tissue folder of threaded engagement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711475171.XA CN107981907A (en) | 2017-12-29 | 2017-12-29 | A kind of tissue folder of threaded engagement |
Publications (1)
Publication Number | Publication Date |
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CN107981907A true CN107981907A (en) | 2018-05-04 |
Family
ID=62041638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201711475171.XA Pending CN107981907A (en) | 2017-12-29 | 2017-12-29 | A kind of tissue folder of threaded engagement |
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CN (1) | CN107981907A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108903993A (en) * | 2018-08-17 | 2018-11-30 | 刘建强 | Operative incision closing device |
CN113040856A (en) * | 2021-04-27 | 2021-06-29 | 浙江微度医疗器械有限公司 | Reinforced ligation clip |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501693A (en) * | 1994-07-06 | 1996-03-26 | United States Surgical Corporation | Surgical hemostatic clip |
JPH0938099A (en) * | 1995-07-31 | 1997-02-10 | Olympus Optical Co Ltd | Ultrasonic incision/tissu coagulation device |
CN101268957A (en) * | 2008-05-12 | 2008-09-24 | 刘佳 | Vascellum clamp |
CN203776975U (en) * | 2014-03-10 | 2014-08-20 | 浙江微度医疗器械有限公司 | Hemostatic clip |
CN104707684A (en) * | 2013-12-14 | 2015-06-17 | 常州市拉特涂料有限公司 | Coating powder refining device |
CN208851562U (en) * | 2017-12-29 | 2019-05-14 | 广东弘和医疗器械制造有限公司 | A kind of tissue folder of threaded engagement |
-
2017
- 2017-12-29 CN CN201711475171.XA patent/CN107981907A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501693A (en) * | 1994-07-06 | 1996-03-26 | United States Surgical Corporation | Surgical hemostatic clip |
JPH0938099A (en) * | 1995-07-31 | 1997-02-10 | Olympus Optical Co Ltd | Ultrasonic incision/tissu coagulation device |
CN101268957A (en) * | 2008-05-12 | 2008-09-24 | 刘佳 | Vascellum clamp |
CN104707684A (en) * | 2013-12-14 | 2015-06-17 | 常州市拉特涂料有限公司 | Coating powder refining device |
CN203776975U (en) * | 2014-03-10 | 2014-08-20 | 浙江微度医疗器械有限公司 | Hemostatic clip |
CN208851562U (en) * | 2017-12-29 | 2019-05-14 | 广东弘和医疗器械制造有限公司 | A kind of tissue folder of threaded engagement |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108903993A (en) * | 2018-08-17 | 2018-11-30 | 刘建强 | Operative incision closing device |
CN108903993B (en) * | 2018-08-17 | 2023-12-08 | 刘建强 | Surgical incision closure device |
CN113040856A (en) * | 2021-04-27 | 2021-06-29 | 浙江微度医疗器械有限公司 | Reinforced ligation clip |
CN113040856B (en) * | 2021-04-27 | 2022-08-09 | 浙江微度医疗器械有限公司 | Reinforced ligation clip |
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