A kind of medical load-engaging deviceTechnical field
The present invention relates to a kind of surgical instruments, in particular to a kind of medical load-engaging device, belong to medical instruments field.
Background technology
Laparoscopic surgery has that the time is short, wound is little, painful light, recover the advantage such as fast, cured by increasing surgeryLife uses and is easily accepted by the patient.In endoscope-assistant surgery, by being inserted in the puncture outfit casing tube on human body skin operative incision, by micro-Invasive procedures apparatus stretches into intraperitoneal and operates, and likely can excise or take out the specimen of different size and character in operation, thanSuch as tumor tissues, calculus, foreign body etc.；The specimen of excision is the quickest, complete and is safely extracted out, and is the important ring of successful surgeryJoint.
Medical load-engaging device is just specific to the operational requirements of laparoscopic surgery and develops, can be by excision thing(such as malignant tumor, capsule, the purulence excision tissue such as thing and endometrium) disposably takes out, and effectively prevents pathological tissues with healthyContact tissue, it is to avoid pathology remains, can not only reduce operating difficulty, saves operating time, improves procedure efficiency, and is conducive toPatient postoperative rehabilitation, reduces post-surgical infection's risk, saves a large amount of recessive medical expense for patient.
In prior art, the medical load-engaging device used clinically, core bar is provided with bag mouth and tightens up the stopper slot of line and consolidateDetermining hole, it is all formation slip-knot on core bar center outer surface that bag mouth tightens up line, and slip-knot is between core bar and trocar sheath, soWhen needing that bag is departed from core bar after obtaining specimen, it is necessary to destroy trocar sheath or mobile core bar, make slip-knot expose trocar sheath,Can untie slip-knot, and then make bag depart from core bar, structure is complicated, it is very inconvenient to solve line, and it is the most unnecessary to bring to operation processTrouble.
Summary of the invention
For the deficiencies in the prior art, it is desirable to provide a kind of reasonable in design, reliable, technique is simple, it is easy toSolve the medical load-engaging device of line operation.The present invention is achieved by the following technical solutions:
A kind of medical load-engaging device, including: bag, described bag has blind end and opening；Bag mouth tightens up line, describedBag mouth tightens up the one end opening through described bag of line；Core bar assembly, described bag mouth tightens up the other end of line along described coreThe far-end of the proximal extension of bar assembly extremely described core bar assembly；Handle, described handle is connected with the far-end of described core bar assembly, instituteState bag mouth to tighten up after line tightens up at described handle, to form slip-knot.
Described bag mouth tightens up the other end of line and self forms slip-knot at described handle.
Described core bar assembly includes that core bar and fixed cell, described fixed cell are provided with the first wire casing, and described bag mouth is receivedStringing extends to the near-end of described core bar through described first wire casing.
Described bag mouth tightens up line and extends to the far-end of described core bar from the near-end of described core bar along the outer surface of described core bar.
Described core bar assembly includes core bar, is provided with the second wire casing, is provided with at least one axle in described core bar in described core barTo through hole to form the second wire casing, described bag mouth tightens up line and extends to institute along from the near-end of described core bar through described second wire casingState the far-end of core bar.
The central axis of described axially extending bore and the central axes of described core bar.
Described handle is provided with the 3rd wire casing, and described bag mouth tightens up line and forms slip-knot after described 3rd wire casing.
Described core bar assembly includes that core bar and fixed cell, described fixed cell are provided with the first wire casing, in described core barIt is provided with at least one axially extending bore to form the second wire casing；Described handle is provided with the 3rd wire casing；The center of described first wire casingAxis, the central axis of described second wire casing, the central axis of described 3rd wire casing all overlap.
A kind of medical load-engaging device, also includes that trocar sheath, described core bar assembly can stretch in described trocar sheath, can be along describedTrocar sheath moves axially, and can be along the center axis thereof of described core bar assembly in trocar sheath.
Described core bar assembly includes core bar, and the wall of described core bar is additionally provided with storage through hole, and described bag mouth tightens up the another of lineAfter one end forms slip-knot, end is taken in the storage through hole on described core bar.
According to the medical load-engaging device of the present invention, bag is detachable to be connected on medical load-engaging device, and bag mouth tightens up lineSlip-knot be always positioned at outside trocar sheath, doctor can need to untie at any time slip-knot according to operation, and then bag and bag mouth are tightened up lineSeparate from medical load-engaging device, be conducive to quickly obtaining specimen, reduce patient suffering, when can effectively shorten specimen taking-upBetween.
Accompanying drawing explanation
Fig. 1 is the state diagram before medical load-engaging device according to embodiments of the present invention uses；
Fig. 2 is the state diagram during medical load-engaging device according to embodiments of the present invention uses；
Fig. 3 is the decomposing schematic representation of the medical load-engaging device according to the embodiment of the present invention；
Fig. 4 is the core bar assembly according to the embodiment of the present invention and the decomposing schematic representation of supporting mechanism cooperation；
Fig. 5 is the decomposition enlarged diagram of fixed cell；
Fig. 6 is the central axis section view tightening up line wire casing along bag mouth of medical load-engaging device according to embodiments of the present inventionFigure；
Fig. 7 is the schematic diagram of the supporting mechanism of the medical load-engaging device according to the embodiment of the present invention；
Fig. 8 is the close-up schematic view of structure at A in Fig. 7；
Fig. 9 be the supporting mechanism of medical load-engaging device according to embodiments of the present invention coordinate with core bar assembly recessed along firstThe axial sectional view of groove, in order to clearly show that assembly relation, eliminates parts thereof in figure；
Figure 10 is the partial enlarged drawing of structure at B in Fig. 9.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.Retouching in the present inventionIn stating, it is to be understood that term " near-end ", " far-end ", " " center ", " longitudinally ", " laterally ", " length ", " width ", " thicknessDegree ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ",Orientation or the position relationship of the instruction such as " counterclockwise ", " axially ", " radially ", " circumferential " are based on orientation shown in the drawings or positionRelation, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must haveHave specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importanceOr the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express orImplicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, threeIndividual etc., unless otherwise expressly limited specifically.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for solvingRelease the present invention, and be not considered as limiting the invention.
As shown in Figure 1 to Figure 3, the medical load-engaging device of the embodiment of the present invention, comprise bag 1, supporting mechanism 2, core bar groupPart 3, trocar sheath 4, handle 5, bag mouth tighten up line 6, handle 7.
As in figure 2 it is shown, bag 1 has open end 11 and blind end 12, the inner wall material of bag 1 is of fine quality selects TPU (i.e. thermoplasticityPolyurethane), the edge of bag 1 open end 11 forms nonocclusive annular through hot sealing process after being folded into bilayer in bag 1 and leads toRoad 111, bag mouth tightens up one end of line 6 and penetrates at the non-close of nonocclusive circular passage 111, and leads to from nonocclusive annularPassing at another non-close in road 111, the other end tightening up line 6 at the non-close of circular passage with bag mouth forms Grapevine knot；One end 211,221 of supporting mechanism 2 penetrates this nonocclusive ring respectively at two non-close of nonocclusive circular passage 111In shape passage 111.Because bag 1 enters intraperitoneal, the outer wall of bag 1 needs and bioresorbable, need to possess waterproof, moisture proof, oxygenChange the characteristics such as rotten, therefore the outer wall material of bag 1 is of fine quality selects medical nylon coating film cloth.
With reference to Fig. 3 to Fig. 5, core bar assembly 3 includes that core bar 33 and fixed cell, described fixed cell include the first fixing unitPart 31 and the second retaining element 32.Core bar assembly 3 is provided with at least one groove, groove be located at the first retaining element 31 and/orOn second retaining element 32, include but not limited to scenario described below: the first retaining element 31 is provided with at least one groove；Second is solidDetermine element 32 and be provided with at least one groove；It is equipped with at least one recessed on first retaining element 31 and the second retaining element 32Groove.In the present embodiment, as preferably, the first retaining element 31 and the second retaining element 32 it is equipped with two grooves, i.e.One retaining element 31 is provided with first groove the 315, second groove 316, and the first groove 315 and the second groove 316 lay respectively at solidThe both sides of the central axis of cell, positional symmetry；Second retaining element 32 is provided with the 3rd groove the 325, the 4th groove 326,3rd groove 325 and the 4th groove 326 lay respectively at the both sides of the central axis of fixed cell, positional symmetry；First groove315, the flute length of the second groove the 316, the 3rd groove the 325, the 4th groove 326 is the most equal, groove width is the most equal；First groove 315,Size and the shape of three grooves 325 are the most identical, and size and the shape of the second groove the 316, the 4th groove 326 are the most identical.First is recessedGroove the 315, the 4th groove 326 is collectively forming the installation of the first bracing frame 21 and fixes groove, and the second groove the 316, the 3rd groove 325 is commonGroove is fixed in the installation forming the second bracing frame 22, and the first retaining element 31 and the size of the second retaining element 32 and shape are homogeneousWith, two such retaining element has only to out a secondary mould, has saved production cost, convenient processing and manufacture, and had usedCheng Zhong, stress equalization.
The fixed cell of core bar assembly 3 is provided with several grooves, is used for housing bag mouth and tightens up line 6 and supporting mechanism 2；ToolBody ground, the fixed cell of core bar assembly 3 is provided with the first wire casing 34, and the first wire casing 34 can be only located on the first retaining element 31,Also can be only located on the second retaining element 32, or, the first wire casing 34 is by the first retaining element 31 and the second retaining element 32The passage being collectively forming.With reference to Fig. 5, in the present embodiment, as preferably, the first retaining element has the 5th groove 319, firstThe 6th groove 329, the 5th groove the 319, the 6th groove 329 is had to be collectively forming the first wire casing 34 on retaining element, the first wire casing 34The central axes of central axis and fixed cell, the i.e. first wire casing 34 half is positioned on the first retaining element 31, anotherPartly it is positioned on the second retaining element 32.
For the ease of describing the present invention and simplifying description, in the present embodiment, based on orientation shown in the drawings or position relationship,The one end in close bag 1 direction of each parts is referred to as " near-end ", is referred to as " far-end " near the one end in handle 7 direction.Bag mouth is receivedThe other end of stringing 6, after the first wire casing 34 passes, both can extend to core from the near-end of core bar 33 along the outer surface of core bar 33The far-end of bar 33, it is also possible to from the inside of core bar 33 along from the far-end of the proximal extension of core bar 33 to core bar 33.When bag mouth tightens upWhen line 6 extends to the far-end of core bar 33 from the near-end of core bar 33 along the outer surface of core bar 33, the outer surface of core bar 33 arranges spacingGroove or the fixing buckle of line.The far-end of core bar 33 is extended to along the inside of core bar 33 from the near-end of core bar 33 when bag mouth tightens up line 6Time, as shown in Figure 6, it is provided with at least one axially extending bore in core bar 33 for providing bag mouth to tighten up the passage of line 6, this axially extending boreBeing the second wire casing 35, bag mouth tightens up line 6 from one end (i.e. near-end) of core bar 33 by the second wire casing 35, extends to through core bar 33The other end (i.e. far-end) of core bar 33.In the present embodiment, as preferably, being provided with an axially extending bore in core bar 33, this is axialThrough hole is the second wire casing 35, and the central axes of the central axis of this axially extending bore and core bar 33, the i.e. second wire casing 35Central axis and the central axes of core bar 33, say, that core bar 33 is hollow circular-tube, in the second wire casing 35 is core bar 33Hollow cylinder, further, the diameter of the second wire casing 35 is equal to the internal diameter of core bar 33, and the length of the second wire casing 35 and coreThe length of bar 33 is identical, i.e. the inwall of core bar 33 surrounds and forms the second wire casing 35.Bag mouth tightens up line 6 and wears in the second wire casing 35Cross, extend to the other end of core bar 33 from one end of core bar 33.
Be additionally provided with on core bar 33 at least one for the hole, location that fixed cell and core bar 33 are fixedly connected, correspondingGround, fixed cell is provided with at least one locating dowel.In the present embodiment, as preferably, core bar 33 is provided with at least two locationHole, hole, two location is symmetrical arranged.Accordingly, fixed cell is provided with a pair locating dowel, and two locating dowels are symmetrical arranged.SpecificallyGround, as shown in Figure 4, Figure 5, the first retaining element 31 and the second retaining element 32 is respectively provided with a locating dowel, the first fixing unitThe locating dowel 318 of part 31 is inserted the hole, location 332 of core bar 33 correspondence and is fixed, and the locating dowel of the second retaining element 32 inserts core bar 33On another location hole symmetrically arranged with hole 332, location fix, and then fixed cell is fixed on core bar 33.Fixing singleUnit also includes that storage tank 317, core bar 33 are at least partly fixed in storage tank 317, and locating dowel is positioned at storage tank 317, soCore bar 33 can be firmly attached with fixed cell.The locating dowel quantity with hole, location is combined with two parts of satisfied cooperationDepending on intensity and firmness.
As shown in Figure 6, handle 7 is provided with the 3rd wire casing 73, and the 3rd wire casing 73 can be only located on left handle 71, it is possible to only positionIn right handles 72, or the 3rd wire casing 73 is the passage being collectively forming by left handle 71 and right handles 72.In the present embodiment, makeFor preferably, the 3rd wire casing 73 is the hollow cylinder in handle 7, further, and the central axis of the 3rd wire casing 73 and handle 7Central axes, the half of the i.e. the 3rd wire casing 73 is positioned on left handle 71, and second half is positioned in right handles 72.Bag mouth tightens up line6 strain after the 3rd wire casing 73, self form slip-knot and fix at handle 7.
As shown in Figure 4, the wall of core bar 33 being additionally provided with storage through hole 331, bag mouth tightens up the other end of line 6 and forms slip-knotAfter, in the storage through hole 331 on end income core bar 33.On the one hand, it is free end that bag mouth tightens up the end of line 6, in storage fortuneDuring defeated, may tie a knot or enter between trocar sheath 4 and core bar assembly 3, or because external force makes slip-knot open；On the other hand, endEnd is freely scattered and affects the attractive in appearance of product, in the storage through hole 331 on end income core bar 33, and medical load-engaging device monnolithic caseNeatly, attractive in appearance.
In sum, bag mouth tightens up one end of line 6 and penetrates at the non-close of the nonocclusive circular passage 111 of bag 1,And pass at another non-close of nonocclusive circular passage 111, at the non-close of circular passage, self forms Grapevine knot.BagMouth tightens up on the second wire casing 35 in the first wire casing 34 that the other end of line 6 sequentially passes through on fixed cell, core bar 33, handle 7The 3rd wire casing 73 after strain, at the end 74 of the 3rd wire casing 73 self formed slip-knot, end income core bar 33 on storageIn through hole 331.The near-end of the second wire casing 35 and far-end connection, the far-end of the second wire casing 35 and the 3rd wire casing 73 of the first wire casing 34Near-end connect, and the central axis of first wire casing the 34, second wire casing the 35, the 3rd wire casing 73 all overlaps, i.e. bag mouth tightens up line 6Passage is a linear path.
In prior art, bag mouth tightens up one end of line 6 and self forms fisherman at the non-close of the circular passage of bag 1Knot, the other end is axially extending along core bar assembly, forms slip-knot at core bar assembly axially adjacent to centre position, and is placed in trocar sheathIn.Specifically, the outer surface of core bar assembly 3 is provided with bag mouth and tightens up the stopper slot of line 6 and multiple fixing hole, and stopper slot is along core barAssembly 3 is axially arranged, and bag mouth tightens up line 6 in stopper slot, and forms slip-knot on core bar assembly after needing guiding through fixing hole and fix.Before using, because core bar assembly is entirely located in trocar sheath, so bag mouth tightens up the slip-knot of line 6 together with core bar assembly at overcoatIn pipe；During use, when bag is separated from medical load-engaging device by needs, doctor must be axial from trocar sheath by core bar assemblyMoving to a certain degree, this slip-knot could be exposed trocar sheath, first opening this slip-knot could separate bag.Present invention designMedical load-engaging device, bag mouth tightens up the slip-knot of line 6 all the time in the outside of trocar sheath 4, and doctor can need to untie at any time according to operationSlip-knot, and then bag 1 and bag mouth are tightened up line 6 separate from medical load-engaging device, beneficially doctor quickly obtains specimen,Reduce patient suffering and postoperative infection equivalent risk, can effectively shorten specimen take-off time, and first wire casing the 34, second wire casing 35,The central axis of the 3rd wire casing 73 all overlaps, and i.e. bag mouth tightens up the passage of line 6 is that a linear path, beneficially bag mouth tighten up line6 smooth and easy folding and unfoldings in passage.
Core bar assembly 3 can stretch in trocar sheath 4, and core bar assembly 3 and supporting mechanism 2 are respectively arranged with determining of cooperatingPosition mounting structure；As preferably, described positioning and mounting structure is positioning bar and locating slot.Further, core bar assembly 3 is provided withAt least one positioning bar, supporting mechanism 2 is provided with at least one locating slot.In the present embodiment, core bar assembly 3 is provided with twoPositioning bar, supporting mechanism 2 is provided with two locating slots.
As it is shown in fig. 7, supporting mechanism 2 comprises first bracing frame the 21, second bracing frame 22.Preferably, the first bracing frame 21Identical with the size of the second bracing frame 22 and shape, during assembling, one of them bracing frame is turned over turnback and is i.e. symmetrical arrangedAnother bracing frame；Before upset, first locating slot 231, second locating slot installed on fixing end 23 of the first bracing frame 21232, with two locating slots installed on fixing end of the second bracing frame 22 towards identical；After upset, the first locating slot 231,Two locating slots installed on fixing end of the second locating slot 232 and the second bracing frame 22 towards contrary, so, solid with firstDetermine the positioning bar phase in the positioning bar in the first groove 315 on element 31, the 3rd groove 325 on the second retaining element 32Join.So, two bracing frames have only to out a secondary mould, have saved production cost, convenient processing and manufacture, and the process of useIn, stress equalization.When the open end 11 of bag 1 is tightened up, the near-end 211 of the first bracing frame 21 and the near-end of the second bracing frame 22221 abut.When the open end 11 of bag 1 is launched, the near-end 211 of the first bracing frame 21 and the near-end 221 points of the second bracing frame 22Open.
As shown in Fig. 7 to Fig. 8, the first bracing frame 21 is identical with the size of the second bracing frame 22 and shape, and the other end (is i.e. pacifiedThe fixing end of dress) it is linear, it is respectively equipped with at least one locating slot.In the present embodiment, with the first support of supporting mechanism 2As a example by frame 21, in the present embodiment, the fixing end 23 of the installation of the first bracing frame 21 is provided with two locating slots: the first locating slot 231,Second locating slot 232.Size and the shape of two locating slots are identical, the cross section shape of first locating slot the 231, second locating slot 232Shape is opening rectangle or open trapezoid or U-shaped.The thickness of locating slot fixes end 23 equal to installing of the first bracing frame 21Thickness；In the present embodiment, it is preferable that the degree of depth of locating slot is less than or equal to the half of supporting mechanism 2 width；If clamping slot depthExcessive, the width at the first bracing frame 21 directly over locating slot is little, intensity is weak, it is impossible to meet tension requirement.The length of locating slotDegree is more than or equal to one times of clamping slot depth, because of two locating slots and two positioning bar one_to_one corresponding；If, the length of locating slotToo small, accordingly, the length of positioning bar is less, therefore positioning bar intensity weak, when using described medical load-engaging device, locationMuscle has the risk of fracture, causes supporting mechanism 2 to depart from core bar assembly 3, makes specimen and bag 1 be difficult to take out in abdominal cavity of patients, givesDoctor and patient bring inconvenience.As shown in Figure 8, first locating slot the 231, second locating slot 232 is in the installation of supporting mechanism 2On fixing end 23, interval is arranged, two locating slots are spaced apart is more than or equal to a positioning groove length.As Fig. 9 to Figure 10 instituteShow, be respectively equipped with at least in the 3rd groove 325 on first groove the 315, second retaining element 32 on the first retaining element 31One positioning bar, as a example by the first groove 315, in the present embodiment, as preferably, is provided with two location in the first groove 315Muscle: first positioning bar the 3151, second positioning bar 3152, positioning bar is rectangular shape or open trapezoid or the projection of U-shaped.Such as figureShown in 10, protruding height is equal to or less than the degree of depth of locating slot groove.First positioning bar the 3151, second positioning bar 3152 isIn one groove 315, interval is arranged, two bulge clearances are more than or equal to the distance of a projection length.First positioning bar 3151,The size of the second positioning bar 3152 and shape are fixed with first locating slot 231, second installing fixing end 23 of the first bracing frame 21Position groove 232 one_to_one corresponding.So that the fixing end 23 of installing of the first bracing frame 21 is mounted on the recessed of the first retaining element 31In groove 315, and the locating slot of positioning bar in the groove 315 of the first retaining element 31 and the first bracing frame 21 cooperates solidFixed, the i.e. first locating slot 231 cooperates with the second positioning bar 3152 with first positioning bar the 3151, second locating slot 232.3rdGroove 325 size and shape are all identical with the first groove 315, and are symmetrical arranged with the first groove 315.On the one hand, the first locationGroove the 231, second locating slot 232 coordinates fixing respectively with first positioning bar the 3151, second positioning bar 3152 in groove 315；SeparatelyOn the one hand, the first retaining element 31 and the second retaining element 32 is connected and by fixing for the installation of supporting mechanism 2 end extrudingIt is fixed between the two, any one in above-mentioned two aspects, all can realize the fixing company of supporting mechanism 2 and core bar assembly 3Connecing, two aspects combine, and fixed effect is more preferable.
As shown in Figure 4, core bar assembly 3 includes core bar the 33, first retaining element 31 and the second retaining element 32, core bar assemblyThe near-end of 3 is provided with the first retaining element 31, and the second retaining element 32 and the first retaining element 31 cooperate to fix firstEnd 23 is fixed in the installation of support 21, and further, the first retaining element 31 of core bar assembly 3 and the second retaining element 32 are interferenceOr interference fits connects.Be simultaneously provided with mounting post and installing hole on first retaining element 31, the second retaining element 32 be provided withThe installing hole of correspondence and mounting post；Or, the first retaining element 31 and the second retaining element 32 one of them be provided with installationPost, another is provided with installing hole (not shown).
In the present embodiment, as preferably, first retaining element the 31, second retaining element 32 is all simultaneously provided with mounting postAnd installing hole.Further, the first retaining element 31 is provided with 3 mounting posts and 3 installing holes, accordingly, the second fixing unitPart 32 is provided with 3 installing holes and 3 mounting posts.The size of the installing hole on the first retaining element 31 and the second retaining element 32And shape is the most identical, size and the shape of mounting post are the most identical.
Mounting post and installing hole symmetric configuration on fixed cell, specifically, 3 mounting posts on the first retaining element 31With the both sides that 3 installing holes lay respectively at the first wire casing 34, positional symmetry, 3 installing holes on the second retaining element 32 and 3Mounting post lays respectively at the both sides of the first wire casing 34, positional symmetry.Such symmetric design, convenient processing and manufacture, cost is relativeRelatively low, and during use, stress equalization.
It should be noted that the layout that installing hole, mounting post are on the first retaining element 31 and the second retaining element 32 is alsoCan be that the first retaining element 31 is provided with X mounting post；Accordingly, the second retaining element 32 is provided with X installing hole (whereinX is more than or equal to 2)；Or first retaining element 31 be provided with N number of mounting post and M installing hole, accordingly, the second retaining element32 are provided with N number of installing hole and M mounting post (wherein N is more than or equal to 1, and M is more than or equal to 1).Mounting post, installing hole bigLittle, shape and quantity can be varied as desired in, mounting post, the installing hole cloth on the second retaining element, the first retaining elementOffice can also change as required, depending on meeting two the part bond strengths and firmness matched.The present embodiment is to showExample, it is intended to be used for explaining the present invention, and be not considered as limiting the invention.
Peace on mounting post on first retaining element 31 one end of core bar assembly 3 and installing hole and the second retaining element 32Dress hole and mounting post interference or interference fits connect.The upper limit of installing hole is less than or equal to the limit inferior chi of mounting postVery little, i.e. interference fit；Or the upper limit of installing hole is more than the limit inferior size of mounting post, and installing hole limit inferior size is littleIn the upper limit of mounting post, i.e. interference fits.First installing hole 311 and first mounting post the 321, second installing hole 312 withSecond mounting post the 322, the 3rd installing hole 313 and the 3rd mounting post 323 one_to_one corresponding, interference or interference fits connect.
Preferably, the cross section of mounting post is circle, and the cross section of installing hole is polygon.If mounting post and installationThe cross section in hole is circle, and during assembling, installing hole needs when being contacting of face dough-making powder, interference or interference fits with mounting post to useFirst retaining element 31 could be cooperated by artificial hammering, forcing press press-in, cold charge or hot charging with the second retaining element 32.In order to overcome above assembling difficulty, in the medical load-engaging device of the present invention, the cross section of mounting post be circle, installing hole transversalFace is polygon, it is preferable that in the present embodiment, and the cross section of installing hole is regular hexagon；Such first retaining element 31 withWhen the second retaining element 32 interference or interference fits, installing hole is that plane contacts with the tangent of periphery with mounting post, suitably adjustsThe whole magnitude of interference can meet installation reliability demand, at normal temperatures, it is not necessary to by other instruments, just can assemble by hand,Technique is simple, structure is reliable, easy to assembly.
Core bar assembly 3 stretches into and is positioned at trocar sheath 4, and can move axially in trocar sheath 4, and handle 7 includes left handle71 and right handles 72.The other end of core bar 33 is provided with handle 7, and core bar 33 is additionally provided with at least one hole, location for handle 7.In the present embodiment, as preferably, core bar 33 is provided with four holes, location for handle 7, accordingly, left handle 71 and right handles72 are respectively provided with two the first locating dowels, two the first locating dowels of left handle 71, right handles 72 two the first locating dowels the most slottingEnter the hole, location of core bar 33 correspondence thus be connected, and then handle 7 is fixed on core bar assembly 3.Right handles 72 also hasSecond locating dowel, left handle 71 has the second hole, location, and the second locating dowel of right handles 72 inserts the second location of left handle 71Hole and interference or interference fits connect.First locating dowel and the first hole, location, the second locating dowel and the second quantity positioning holeDepending on two part bond strengths of satisfied cooperation and firmness.On left handle 71 and right handles 72 by the second locating dowel withSecond location hole interference or interference fits are fixedly connected on core bar.Trocar sheath 4 is provided with hole, two the 3rd location and (does not marks in figureGo out), it is additionally provided with handle 5 outside trocar sheath 4, handle 5 is symmetrical structure.Handle 5 is divided into left handle 51 and right handle 52.Left handle 51It is respectively provided with the 3rd locating dowel, outside the 3rd locating dowel of right handle 52, the 3rd locating dowel of left handle 51 are all inserted with right handle 52The 3rd of sleeve pipe 4 positions hole thus is connected, and then is fixed between right handle 52 and left handle 51 by trocar sheath 4.RightHands 52 also has the 4th locating dowel, and left handle 51 has the 4th hole, location, and the 4th locating dowel of right handle 52 inserts left handle 51The 4th hole, location and interference or interference fits connect.Locating dowel is tied with satisfied two parts coordinated with the quantity in hole, locationDepending on closing intensity and firmness.
In the present embodiment, before not using, the supporting mechanism 2 of medical load-engaging device is in collapsed state, and bag 1 is from blind end12 fold retracting is reduced to open end 11, and supporting mechanism 2, bag 1, bag mouth tighten up line 6 and part core bar components containing in trocar sheath 4In.During use, being entered in abdominal cavity of patients by perforator by this medical load-engaging device, doctor one holds the handle on trocar sheath 4Hands 5, is respectively put into thumb and forefinger in the left and right looping pit of handle 5, and core bar assembly 3 is pushed away forward by another hands by handle 7Go out.After supporting mechanism 2 is completely pushed out of trocar sheath 4, supporting mechanism 2 recovers original state and struts the open end 11 of bag 1, bagThe folded volume of body 1 comes up, and then bag 1 all launches.Preferably, bilateral arc can be automatically formed during the expansion of supporting mechanism 2Shape, it is not necessary to extra apparatus auxiliary just can make bag 1 in open state.
Having inserted scope or endoscope in abdominal cavity of patients in advance, doctor is by observing display, it is possible to identifies, cut off markThis, then obtain specimen with medical load-engaging device, and specimen is positioned at bag 1.Doctor one holds the handle 5 on trocar sheath 4, willThumb and forefinger are respectively put in the looping pit of left and right, and core bar assembly 3 is pulled back by another hands by handle 7, the peace of supporting mechanism 2The fixing end 23 of dress is first incorporated in trocar sheath 4, and supporting mechanism 2, along its bilateral arcuate structure, can be incorporated in trocar sheath 4 completely,Bag mouth tightens up line 6 and is slowly tightened up simultaneously, thus tightens up the open end 11 of bag 1, and then closes bag 1, with by specimen from suffering fromPerson's intraperitoneal takes out.Because of the first bracing frame 21 first locating slot the 231, second locating slot 232 respectively with the first retaining element 31The first groove 315 in two positioning bars (first positioning bar the 3151, second positioning bar 3152) coordinate fixing, the second bracing frameLocating slot on 22 coordinates fixing respectively with two positioning bars in the 3rd groove 325, and the first retaining element 31 is provided withThe interference of mounting post or interference fits on installing hole and the second retaining element 32, structure is reliable so that supporting mechanism 2 without departing fromCore bar assembly 3.
Volume size according to specimen or operation needs, when specimen volume is less, doctor can be by medical load-engaging deviceTake out at abdominal incisions together with perforator, then solve opened mouth and tighten up the slip-knot of line 6 other end, discharge knot, and then by bagBody and bag mouth tighten up line and separate from medical load-engaging device；Or first open the slip-knot of knot, discharge knot, take medical taking awayThing device part in addition to bag 1 and bag mouth tighten up line 6, then tightens up line 6 by bag 1, bag mouth and perforator tightens up and oneRise and take out at abdominal incisions；Or first open the slip-knot of knot, discharge knot, take medical load-engaging device away except bag 1 and bag mouthTighten up the part beyond line 6 and perforator, then tighten up the Grapevine knot of line 6 by bag mouth and tighten up the open end 11 of bag 1, and thenTightening pocket opening tightens up line 6 and is taken out at abdominal incisions by bag 1.When specimen is relatively big, take out when having any problem, can first by specimen at bagIt is cut into some fritters in body 1 or abdominal incisions is suitably done enlarging process.
In sum, according to the medical load-engaging device of the present invention, bag 1 is detachable to be connected on medical load-engaging device,Bag mouth tightens up the slip-knot of line 6 all the time outside trocar sheath 4, and doctor can need to untie at any time slip-knot by operation, and then by bag 1 and bagMouth tightens up line 6 and separates from medical load-engaging device, is conducive to quickly obtaining specimen, reduces patient suffering, can effectively shortenSpecimen take-off time；And the medical load-engaging device of the present invention, simple in construction, low cost, there is preferable use value and popularizationPotentiality.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connectsConnect, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, permissibleIt is connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For this areaFor those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissibleIt is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature existsSecond feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative ofFisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can beOne feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically showExample " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spyPoint is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term notIdentical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in officeOne or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this areaThe feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnelClose and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exampleProperty, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentionedEmbodiment is changed, revises, replaces and modification.