A kind of medical laparoscope bile duct puncture pull needleTechnical field
The utility model relates to arrive a kind of medical instrument, more particularly, to a kind of medical laparoscope bile duct puncture pull needle,It is mainly used in the operation of laparoscope bile duct puncture；Belong to the field of medical instrument technology.
Background technique:
Currently, generalling use laparoscope bile duct puncture, and lift bile duct after piercing in existing laparoscopic biliary tract operationWall notch again, but typically now Medical operating needle is all the arc-shaped needle used, this needle is lifting and need to cutMouthful bile duct wall when, fold can be formed toward intermediate compression, the notch risen out in this way is given after performing the operation with regard to out-of-flatness, irregularSuture make troubles, be also easy to appear suture out-of-flatness the phenomenon that, cause stenosis of bile duct, influence patient healing.So still havingNecessity is improved.
It does not find to have by patent retrieval to report with the patent of the utility model same technique and non-patent literature, with this realityMainly have with the novel patent for having certain relationship and paper following:
1, the invention of Patent No. CN201410456535.X, entitled " the double pointed porous medical needle for not having to threading " are specialBenefit, which disclose a kind of Medical operating needles, design needle point at the both ends of needle, design multiple pin holes, pin hole side wall on needle bodyDesign wedge-like opening.On operating table, nurse holds needle handle with needle holder and passs in left hand according to the needs of operative doctor, needed for holdingSurgical thread props up surgical thread in "eight" shape with hand thumb, index finger and is linked into pin hole side wall wedge-shaped opening；If you need to more differencesSurgical thread continues to repeat above-mentioned movement, is hung on different pin holes.When operation, according to operation needs, do not have to go out needle completely, it is more quasi-Really go out pin mark origin in skin to return, tissue needed for hanging up subcutaneous tissue or being hung up according to design is back to from different pathwaysThe operative region of required fixation.This needle do not have to threading, take the mode of being linked into, can more be linked into, a needle can be sutured and brought intoMore different surgical threads organizes needed for field of operation, and that line can be differentiated is clear, avoid winding mutually, and the two-way double pointed formula of use,Without frequently passing in and out needle soft tissue maintenance in tissue can be completed, promotion, draw, subtract etc..
2, Patent No. CN201710041395.3, the patent of invention of entitled " double end sewing needle ", which discloseA kind of double end sewing needle, it includes an arc needle body, it is characterized in that the both ends of the arc needle body are equipped with puncture tip,The intermediate position of arc needle body is connected with suture.Arc needle body breaches the constraint of traditional concept, can significantly improve suture effectRate, the direction of doctor's no replacement is required when in use needle can be directly opposite to be pierced into notch and suture next needle.
3, Patent No. CN201220013623.9, the utility model patent of entitled " surgical operating needle ", the patent are publicA kind of laparoscopic cholecystectomy stomach wall traction stitching unstrument has been opened, the absorbable suture of draught line has been also served as including one, feature existsIn: the suture both ends are connected separately with the first sewing needle and the second sewing needle.First sewing needle be bending triangle orRound needle, in order to perform the operation at the end of sew up the incision；Second sewing needle is straight suture needle.The utility model can be used for abdominal cavityMirror gallbladder removal, it can also be used to which stomach wall traction and suture use in the operation such as laparoscopic appendectomy, gynaecology's cyst excision.It usesWhen, it only needed under xiphoid-process using Endoscopic Knotting technology, respectively cut long 5mm small notch under upper right abdominal rib edge, umbilical opening cuts 10mmOperation can be completed in notch.
These above-mentioned patents have been directed to medical needle, but carefully analyze it can be found that disclosed in these patentsIt is still all the needle of arc, the problem noted earlier when carrying out the traction of laparoscope bile duct puncture still has in this way, soStill need further to be improved.
Utility model content
The purpose of this utility model is that proposing one kind for the problems of existing laparoscope bile duct puncture pull needleNew laparoscope bile duct puncture pull needle, there is fold in bile duct wall when which can change tractionProblem, and structure is simple, convenient for operation.
In order to reach this purpose, the utility model provides a kind of medical laparoscope bile duct puncture pull needle, including needlePoint, needle body and backshank, needle point are located at the head for puncturing pull needle, and needle body is located at centre, and backshank is located at the tail portion for puncturing pull needle,One connection needle point of needle body, other end connects backshank, and by needle point, needle body and backshank combine to form the traction of laparoscope bile duct punctureNeedle, it is characterized in that the needle body is that multistage different shape combines the polygon to be formed bending needle body.
Further, the multistage different shape includes two kinds of straightway, segmental arc shapes.
Further, the multistage different shape group is combined into three sections of combinations, wherein the first segment connecting with needle point is arcShape section, what is connect with backshank is also segmental arc, is connected between two segmental arcs by a straightway, forms two arcs oneThe three-stage structure needle body of straight line.
Further, the multistage different shape group is combined into four sections of combinations, wherein the first segment connecting with needle point is arcShape section, what is connect with backshank is also segmental arc, is connected between two segmental arcs by the straightway of two different angles, shapeAt four segment structure needle bodies of two arcs, two straight line.
Further, connect between the segmental arc and straightway or by round-corner transition between straightway and straightwayIt connects, the radius of fillet is in 5-10mm.
Further, the needle point is Mitsubishi's cone cell, and the preceding one third of needle body is also triangular pyramid, is worn in needle pointBile flow is facilitated to go out after intimidating tube wall.
Further, the needle point is cone shape or other polygon diamond shapeds.
Further, the backshank rear end is flat, and is connected with suture, the diameter of the suture be less than orEqual to the diameter of the needle rear end.
Further, the backshank rear end is provided with the pin hole for wearing suture, and suture passes through pin hole and forms detourShape.
Utility model has the advantages that
The utility model takes multistage different shape to combine the polygon to be formed bending needle by the shape of change needle bodyBody has the advantages that the following in this way:
1) when carrying out puncturing traction, due to being that straightway or straightway combine at the intermediate position of needle body, so upperBe not in the biliary tract wall fold of arc-shaped needle body when mentioning, facilitate notch；
2) since needle body centre position is linear type, so the cutting shoulder for carrying out notch after lifting is straight, it is easy suture, noIt will appear the phenomenon that winding torsion is turned round；
3) suture has been directly connected in needle rear end, when operation can directly use, and thread a needle without wasting timeLead, while suture also provides safeguard for operation safety, prevents puncture needle from falling abdominal cavity and is difficult to obtain；
4) join in the straightway of needle body and segmental arc and use arc transition everywhere, when allowing to carry out puncture, reduce and hinder,Needle body can easily penetrate patient's biliary tract.
5) one third is triangular pyramid before needle point and needle body, it is therefore an objective to which needle point facilitates bile flow after wearing out bile duct wallOut, reach the purpose for detecting biliary tract, it is simple and easy.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Fig. 2 is the structural schematic diagram of another embodiment of the utility model.
Specific embodiment
The utility model is further described below in conjunction with drawings and examples.
Embodiment one
As shown in Fig. 1, a kind of medical laparoscope bile duct puncture pull needle, including needle point 1, needle body 2 and backshank 3, needle point 1Positioned at the head for puncturing pull needle, needle body 2 is located at centre, and backshank 3 is located at the tail portion for puncturing pull needle, 2 one connection needles of needle bodyPoint 1, other end connect backshank 3, form laparoscope bile duct puncture pull needle by the combination of needle point 1, needle body 2 and backshank 3, feature existsIt is that multistage different shape combines the polygon to be formed bending needle body in the needle body 2.
Further, the multistage different shape includes two kinds of straightway, segmental arc shapes.
Further, the multistage different shape group is combined into three sections of combinations, wherein the first segment connecting with needle point is arcShape section 4, what is connect with backshank is also tail portion segmental arc 6, is connected, is formed by a straightway 5 between two segmental arcsThe three-stage structure needle body of two arcs, one straight line.
Further, pass through the transition of fillet 7 and 8 between the segmental arc and straightway or between straightway and straightwayConnection, the radius of fillet is in 5-8mm.
Further, the needle point 1 is Mitsubishi's cone cell, and preceding the three of needle body/a part 9 is also triangular pyramid,Needle point facilitates bile flow to go out after wearing out bile duct wall.
Further, 3 rear end of backshank is flat, and is connected with suture, and the diameter of the suture is less thanOr the diameter equal to the needle rear end.
Further, the backshank rear end is provided with the needle for wearing suture, 10, suture pass through pin hole 10 formed it is circuitousReturn shape.
Embodiment two
The principle of embodiment two and embodiment be it is the same, structure is as shown in Fig. 2, is a kind of medical laparoscope biliary tractPull needle, including needle point 1 ', needle body 2 ' and backshank 3 ' are punctured, needle point 1 ' is located at the head for puncturing pull needle, during needle body 2 ' is located atBetween, backshank 3 ' is located at the tail portion for puncturing pull needle, and one connection needle point 1 ' of needle body, other end connects backshank 3 ', by needle point 1 ', needleBody 2 ' and backshank combine to form laparoscope bile duct puncture pull needle, it is characterized in that the needle body 2 ' is multistage different shape groupIt closes the polygon formed and bends needle body.
Further, the multistage different shape includes two kinds of straightway, segmental arc shapes.
Further, the multistage different shape group is combined into four sections of combinations, wherein the first segment connecting with needle point is arcShape section 4 ', what is connect with backshank is also segmental arc 4 ', is connected between two segmental arcs by the straightway 5 ' of two different anglesGet up, forms four segment structure needle bodies of two arcs, two straight line.
Further, it is connected between the segmental arc and straightway by the transition of fillet 7 ' and 8 ', straightway and straight lineSection between by 9 ' transition of fillet connect, wherein between segmental arc and straightway the radius of fillet 7 ' and 8 ' in 5-8mm；StraightwayRadius between straightway through fillet 9 ' is in 8-10mm；The angle a of two straight lines is 120-170 degree.
Further, the needle point 1 ' is cone shape or other polygon diamond shapeds.
Further, the 3 ' rear end of backshank is flat, and is connected with suture, and the diameter of the suture is less thanOr the diameter equal to the needle rear end.
Further, the 3 ' rear end of backshank is provided with the pin hole for wearing suture, and suture forms circuitous across pin holeReturn shape.
Above-mentioned listed embodiment, only carries out clear, complete description to the technical solution of the utility model in conjunction with attached drawing；Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on this realityIt is obtained by those of ordinary skill in the art without making creative efforts all other with the embodiment in novelEmbodiment is fallen within the protection scope of the utility model.
Utility model has the advantages that
The utility model takes multistage different shape to combine the polygon to be formed bending needle by the shape of change needle bodyBody has the advantages that the following in this way:
6) when carrying out puncturing traction, due to being that straightway or straightway combine at the intermediate position of needle body, so upperBe not in the skin bile duct wall fold of arc-shaped needle body when mentioning, facilitate notch；
7) since needle body centre position is linear type, so the cutting shoulder for carrying out notch after lifting is straight, it is easy suture, noIt will appear the phenomenon that winding torsion is turned round；
8) suture has been directly connected in needle rear end, when operation can directly use, and thread a needle without wasting timeLead；Suture also provides safeguard for operation safety simultaneously, prevents puncture needle from falling abdominal cavity and is difficult to obtain；
9) join in the straightway of needle body and segmental arc and use arc transition everywhere, when allowing to carry out puncture, reduce and hinder,Needle body can easily penetrate patient's biliary tract.
One third is triangular pyramid before needle point and needle body, it is therefore an objective to needle point facilitates bile flow to go out after wearing out bile duct wall,Reach the purpose for detecting biliary tract, it is simple and easy.