CN208851562U - A kind of tissue folder of threaded engagement - Google Patents
A kind of tissue folder of threaded engagement Download PDFInfo
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- CN208851562U CN208851562U CN201721926633.0U CN201721926633U CN208851562U CN 208851562 U CN208851562 U CN 208851562U CN 201721926633 U CN201721926633 U CN 201721926633U CN 208851562 U CN208851562 U CN 208851562U
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- clamp arm
- thread
- threaded engagement
- tissue
- folder
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Abstract
The utility model is a kind of tissue folder of threaded engagement, it is moulded 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 can realize thread seal in component of the inner wall provided with threaded engagement, clamp arm clamping.The engagement of the concaveconvex structure of the tissue folder of the first clamp arm of the utility model and the second clamp arm compared with prior art, pass through threaded engagement, organize the shearing force of folder big, frictional force also greatly improves, the offset that tissue can be effectively prevent to press from both sides, selecting has the polylactic acid of certain shrinking percentage as absorbable material, increases tissue folder coefficient of friction, increases anti-slip power.
Description
Technical field
The present invention relates to a kind of medical instruments, and in particular to a kind of tissue folder of threaded engagement.
Background technique
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 gall-bladder is closed for folder in cholecystitis, calculous cholecystitis, gallbladder polyps patient's cholecystectomy
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 the inevitable defects such as that there are blood vessel internal membrane damages is larger, anastomosis procedure is complicated, takes long time, 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, falling 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 the new selection mode of one kind of tissue ligation, and Brunswick folder is improved from structure design
Occur loosening, phenomena such as vacillating or falling off too early, in indwelling body can also will not the postoperative optical image diagnosis of interference effect, but it is long
Potential hazard can be still generated in phase indwelling body.Recently as the development of absorbable material, absorbable biological folder enters the market gradually, but
It is a variety of that there are still Pressure values is insufficient for current Absorbable clips, anti-slip power is insufficient, laparoscope clamp process is easy to happen offset etc.
Problem.
US7326223 discloses ligation clip (the LIGATING CLIP WITH INTEGRAL with integral cutting guide rail
CUTTING GUIDE), specifically disclosing hemostatic clamp is two arm configuration of V bifurcated, by safe catching lock, elastic hinge, arcuate nail leg
(clamp), integrated anti-slop serrations and five part of knuckle composition.But there are still some problems in use, is mainly manifested in securely
Property not enough, blood folder use process in will appear locking position slip, be easy to appear offset.
203776976 U of CN discloses 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 mutually matched buckle structure for one end of two clamp arm, is led to
Crossing one group is yin-yang fastening structure, the secure latch being mutually locked, to improve fastness.203776975 U of CN discloses one kind
Hemostatic clamp, the inner surface for specifically disclosing arcuate two-arm is that corresponding concaveconvex structure makes to be pressed from both sides to close blood vessel convenient for the engagement of two-arm
Or pipeline tissue can be firmly closed；By the taper rack gear of the convex on male and fomale(M&F), increasing coefficient of friction, anti-sliding is de-,
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 for being able to satisfy absorbable material, can satisfy clinic
Demand.
Summary of the invention
The object of the present invention is to provide a kind of tissue of threaded engagement folders, pass through thread seal increasing friction force, Neng Gouyou
Effect prevents tissue folder offset, can satisfy clinical demand, specific technical solution is as follows:
A kind of tissue folder of threaded engagement, is moulded, including connected by elastic hinge by absorbable polymer material
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 set as hook portion, and the free end of second clamp arm is set as the hook matched with the hook portion
Slot, the outer surface of first clamp arm free end are provided with the first knuckle, both ends of the hook groove, with the axis pair of the second clamp arm
Claim setting there are two the second cylindrical knuckle, the elasticity hinge is provided with hinge gap, first clamp arm and described the
Two clamp arm inner wall be provided with can mutually matched threaded engagement component, when clamp arm clamping can realize thread seal.
Thread groove is the recessed internal screw thread that the second clamp arm inner wall is arranged in, the thread on internal screw thread and thread protrusion
Configuration is consistent and cooperates, and the engagement of thread seal concaveconvex structure compared to the prior art, shearing force is big, and frictional force is also substantially
It improves, the offset that tissue can be effectively prevent to press from both sides.
Preferably, the component is as the row's thread protrusion being arranged on the center line described in the first clamp arm and described second
The thread groove composition of the corresponding position setting of clamp arm being mutually engaged.In center line, one row's screw thread is set, it can be in center line
Form thread seal thread.
Preferably, the thread height of the thread protrusion is the 1/5-1/2 of the first clamp arm thickness；Thread nominal is straight
Diameter 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 relationship, 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 when threaded engagement.
Preferably, the component is by two rows of screw threads for being arranged along the clamp arm center line two sides of the first clamp arm inner wall
The mutually occlusion thread groove composition of the raised and described second clamp arm inner wall setting.Two rows of screw threads are more compared to row's screw thread shearing force
Greatly, frictional force is also bigger, the offset that tissue can be effectively prevent to press from both sides.
Preferably, the spiral shell that the component is arranged along clamp arm center line in center line side by the first clamp arm inner wall
Line protrusion, the other side setting thread groove and the second clamp arm inner wall setting with the first clamp arm inner wall
The mutually thread protrusion of occlusion and thread groove composition.Two rows of thread seals can have different design methods.
Preferably, the thread height of the thread protrusion is 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 when 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 press from both sides coefficient of friction, increase anti-slip power.
The beneficial effects of the present invention are as follows:
(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 tissue can be effectively prevent to press from both sides；
(2) polylactic acid is as absorbable polymer material, can incorporate solution in human body interior suction, 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 coefficient of friction increases anti-slip power.
Detailed description of the invention
1 three dimensional structure diagram of Fig. 1 embodiment；
2 three dimensional structure diagram of Fig. 2 embodiment；
Appended drawing reference: the first clamp arm 1, the second clamp arm 2, elastic hinge 3, the first knuckle 4, hinge gap 5, hook portion 6, hook groove
7, the second knuckle 8, thread protrusion 9, thread groove 10.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
Embodiment 1
A kind of tissue folder of threaded engagement, as shown in Figure 1, being moulded by absorbable polymer material, including passes through
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 set as hook portion 6, the free end of second clamp arm 2 be set as with
The hook groove 7 that the hook portion 6 matches, the outer surface of 1 free end of the first clamp arm are provided with the first knuckle 4, the hook groove 7
Both ends are arranged with the axisymmetrical of the second clamp arm 2 there are two the second cylindrical knuckle 8, and the elasticity hinge 3 is provided with hinge
Gap 5, first clamp arm 1 and second clamp arm 2 inner wall be provided with can mutually matched threaded engagement component, folder
Thread seal can be realized when arm clamping.Thread groove 10 is the recessed internal screw thread that 2 inner wall of the second clamp arm is arranged in, internal screw thread
And mutual cooperation consistent with the thread configuration in thread protrusion 9.The engagement of thread seal concaveconvex structure compared to the prior art, cuts
Shear force is big, and frictional force also compares increase, the offset that tissue can be effectively prevent to press from both sides.
As shown in Figure 1, the component is by row's thread protrusion 9 for being arranged on 1 center line of the first clamp arm and described
The thread groove 10 of the corresponding position setting of second clamp arm 2 being mutually engaged 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 presss from both sides coefficient of friction, increases anti-slip
Power.The thread height of the thread protrusion 9 is the 1/5-1/2 of 1 thickness of the first clamp arm；Thread nominal diameter is that the first clamp arm 1 is wide
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 when threaded engagement.
Embodiment 2
The present embodiment only describes and implements 1 difference.
The component is that two rows of thread protrusions 9, institute are provided with along the clamp arm center line two sides of 1 inner wall of the first clamp arm
It states 2 inner wall of the second clamp arm and is provided with mutually occlusion thread groove 10.Two rows of screw threads are bigger compared to row's screw thread shearing force, frictional force
Also bigger, the offset that tissue can be effectively prevent to press from both sides.The thread height of the thread protrusion 9 is 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 only describes and implements 1 difference.
The thread height of the thread protrusion 9 is the 1/3 of 1 thickness of the first clamp arm；Thread nominal diameter is that the first clamp arm 1 is wide
The 3/4 of degree, the height of thread H of thread protrusion and pitch P are there are relationship, 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 is changed and is modified.Therefore, the invention is not limited to the specific embodiments 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 being used in this specification
Some specific terms, these terms are merely for convenience of description, does not constitute any restrictions to the utility model.
Claims (7)
1. a kind of tissue of threaded engagement presss from both sides, which is characterized in that moulded 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
It mutually coincide, the free end of first clamp arm is set as hook portion, and the free end of second clamp arm is set as and the hook portion phase
The hook groove of cooperation, the outer surface of first clamp arm free end are provided with the first knuckle, both ends of the hook groove, with the second clamp arm
Axisymmetrical setting there are two the second cylindrical knuckle, the elasticity hinge is provided with hinge gap, first clamp arm
With second clamp arm inner wall be provided with can mutually matched threaded engagement component, when clamp arm clamping can realize that screw thread is close
Envelope.
2. a kind of tissue folder of threaded engagement as described in claim 1, which is characterized in that the component is by the first clamp arm institute
State the thread groove of the row's thread protrusion being arranged on center line position setting corresponding with second clamp arm being mutually engaged
Composition.
3. a kind of tissue folder of threaded engagement as claimed in claim 2, which is characterized in that the thread height of the thread protrusion
For the 1/5-1/2 of the first clamp arm thickness；Thread nominal diameter is the 1/3-3/4 of the first clamp arm width.
4. a kind of tissue folder of threaded engagement as claimed in claim 2, which is characterized in that the thread protrusion is single line spiral shell
Line.
5. a kind of tissue folder of threaded engagement as described in claim 1, which is characterized in that the component is by along first folder
Two rows of thread protrusions of the clamp arm center line two sides setting of arm inner wall and the mutually occlusion spiral shell of the second clamp arm inner wall setting
Line groove composition.
6. a kind of tissue folder of threaded engagement as described in claim 1, which is characterized in that the component is by first clamp arm
Thread protrusion that inner wall is arranged along clamp arm center line in center line side, the thread groove of other side setting and described the
The thread protrusion being mutually engaged with the first clamp arm inner wall and thread groove composition of two clamp arm inner walls setting.
7. the tissue folder of a kind of threaded engagement as described in claim 4 or 5, which is characterized in that the thread of the thread protrusion
Height is the 1/10-1/5 of the first clamp arm thickness；Thread nominal diameter is the 1/6-1/3 of the first clamp arm width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721926633.0U CN208851562U (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 |
|---|---|---|---|
| CN201721926633.0U CN208851562U (en) | 2017-12-29 | 2017-12-29 | A kind of tissue folder of threaded engagement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208851562U true CN208851562U (en) | 2019-05-14 |
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ID=66410005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721926633.0U Active CN208851562U (en) | 2017-12-29 | 2017-12-29 | A kind of tissue folder of threaded engagement |
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| CN (1) | CN208851562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981907A (en) * | 2017-12-29 | 2018-05-04 | 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 CN201721926633.0U patent/CN208851562U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981907A (en) * | 2017-12-29 | 2018-05-04 | 广东弘和医疗器械制造有限公司 | A kind of tissue folder of threaded engagement |
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