CN109846535A - A kind of overlap joint fusion specimen bag and take sundries tool - Google Patents

Abstract

The invention discloses a kind of overlap joints to fuse specimen bag, include sack that is openable and collapsing, and from sack extension made of bag body, the sack includes circular tunnel, the bag body further includes a bag bottom, the bag body includes sheet film, and the film includes the top margin connecting with the tunnel and the first overlap edge and the second overlap edge in its both sides of the edge；First overlap edge and the second overlap edge are by the way that the film, overlapped and welding forms lap joint weld seam after notional fold line folding.The lap joint weld seam includes welding area and transitional region, and the lap joint weld seam has self booster action, transitional region is prevented to be broken.

Description

A kind of overlap joint fusion specimen bag and take sundries tool

The application is title are as follows: a kind of overlap joint fusion specimen bag and takes sundries tool, the applying date are as follows: on 03 06th, 2017, application Number are as follows: the divisional application of 201710129505.1 application for a patent for invention.

Technical field

The present invention relates to Minimally Invasive Surgery instrument more particularly to a kind of specimen bag structures.

Background technique

In Minimally Invasive Surgery (especially hard tube endoscope-assistant surgery), it need to usually be led via patient skin small notch or via puncture Pipe takes out interior tissue or diseased organ.How An Quan convenient and fast taking-up intraluminal tissue or diseased organ, be always puzzlement it is micro- The problem of invasive procedures.Since the clinical application for the first time of hard tube endoscope-assistant surgery, a variety of endoscope-assistant surgery dedicated specimens have been had developed both at home and abroad Bag.It is overall to be divided into two classes: the first kind, single specimen bag although the structure and usage mode of the specimen bag are different. Disclose a kind of band line specimen bag of one-sided open in U.S. patent Nos US5037379, when use need to use nipper clamping mark This bag body enters patient's body using puncture conduit or small notch.Second class, includes specimen bag, and conduit and spreading mechanism take Sundries tool.It is disclosed in the U.S. patent Nos such as US5465731, US5480404, US6383197 and a variety of takes sundries tool, sample Bag is rolled-up and is accommodated within conduit, when use described in take sundries tool to enter patient's body by puncture cannula, then push it Spreading mechanism releases the specimen bag rolled to except conduit, and is strutted specimen bag by spreading mechanism, facilitates loading hand The tissue or diseased organ cut in art.

The specimen bag is usually made of the plastic film of 0.05mm~0.1mm or plastic sheet.Up to the present, it is difficult to Specimen bag is manufactured by the way of integrally formed, generallys use two panels film overlapping heat seal (welding), or use monolithic thin film Doubling is overlapped heat seal (welding).It will be understood by those skilled in the art that heat seal (welding) seam of specimen bag is longer, due to Heat seal (welding) clamping apparatus error, heat seal (welding) pressure error, the factors such as heat seal (welding) non-uniform temperature, easily current situation out The defects of portion gap or locally insecure seam, and be difficult to select the product containing such defect by measuring means.High-volume is raw When production, generallys use to improve heat seal (welding) temperature and increase the method for heat seal (welding) time and realize excessive welding, it is ensured that connect Stitch secured and noresidue gap.However excessively welding typically results in the regional area thickness of specimen bag film substrate Yu seam transition It is significant thinning, it is significantly reduced so as to cause the strength of materials of the seam close region, breakage easily occurs, this phenomenon is usual Referred to as " root is cut ".

One those skilled in the art can enhance specimen bag it is contemplated that increasing film thickness, however specimen bag is for aforementioned When taking in sundries tool, since the size of conduit limits, increase film thickness typically result in specimen bag can not be accommodated in conduit or It can not be released from conduit.The film maximum gauge of the specimen bag of the prior art usually≤0.1mm, and excessively welding typically results in Aforementioned regional area thickness reduces by 30%~50%, significantly reduces the intensity of specimen bag.Up to the present, specimen bag is facing The probability of happening of the accident ruptured in bed use is still larger.Safer more convenient and fast taking-up patient interior tissue or lesion are provided The instrument or method of organ help to improve the safety of Minimally Invasive Surgery, and the development that Minimally Invasive Surgery will be pushed bigger.

Summary of the invention

In one aspect of the invention, a kind of specimen bag for overlapping fusion type is proposed.Comprising it is openable and collapse sack, And from bag body made of sack extension, the sack includes circular tunnel, and the bag body further includes a bag bottom, the bag body packet Containing sheet film, the film includes the top margin connecting with the tunnel and the first overlap edge and second in its both sides of the edge Overlap edge；First overlap edge and the second overlap edge pass through overlapped and weld after notional fold line folding to the film It connects to form lap joint weld seam；The lap joint weld seam includes welding area and transitional region, the lap joint weld seam tool There is self booster action, transitional region is prevented to be broken.

In one embodiment, the bag body includes sheet film, and the film includes the top connecting with the tunnel Side and the first overlap edge and the second overlap edge in its both sides of the edge.First overlap edge and the second overlap edge pass through to institute State film along notional fold line folding after it is overlapped and weld form lap joint weld seam.In another embodiment, institute Stating film also includes bottom edge, the bottom edge by the film after notional fold line folding it is overlapped and weld to be formed it is another One lap joint weld seam.In another embodiment, the film further includes third overlap edge and the 4th overlap edge, and described Three overlap edges and the 4th overlap edge are by the way that the film, overlapped and welding forms another take after notional fold line folding Connect joint welding.

In another embodiment, the film also includes bottom edge, welds to form edge-flange joint weldering along the bottom edge edge Seam, the edge-flange joint weld seam close the bag underseal.In another embodiment, the edge-flange joint weld seam includes the first volume Edge connector weld seam and the second edge-flange joint weld seam.The first edge-flange joint weld seam include excessive fusion weld or excessive welding with The mixing weld seam of standard welding, the second edge-flange joint weld seam include the mixing weldering of standard welding or standard welding and deficient welding Seam.

In another embodiment, the specimen bag further includes bag bottom and is welded by the corner region of the lap joint weld seam Edge-flange joint weld seam made of connecing, the edge-flange joint weld seam close the bag underseal.

In another embodiment, the specimen bag can swell to form hollow revolving body, while the lap joint welds Seam becomes space curve type weld seam.

In another aspect of the invention, it proposes a kind of to take sundries tool for Minimally Invasive Surgery.It is described to take the sundries tool to include Specimen bag and the binding being threaded through in the tunnel, the binding can tighten the sack of specimen bag after receiving tissue specimen.Also Comprising conduit tube component and through its Handleset, and connect with the Handleset strut specimen bag strut machine Structure.The specimen bag and spreading mechanism are set in the conduit tube component and can be with respect to its axial movements；It is operated by Handleset Make the specimen bag and spreading mechanism in conduit tube component to preceding promotion and stretches out sheath assembly and strutted by the spreading mechanism； The spreading mechanism is extracted out backward with the conduit tube component and is separated with the specimen bag, and the bracing wire is through the conduit group Part.

In an additional aspect of the present invention, a kind of method for manufacturing specimen bag is proposed, steps are as follows:

S1: thin film raw material is die-cut to sheet film by cross cutting thin film raw material；

S2: the edge of the film in the tunnel for forming specimen bag is bent and is placed on the first weld mold by welding tunnel On lower mold, weld to form tunnel using the upper mold of the first weld mold；

S3: lap joint method welds bag body, first rolls over the first overlap edge of the film and the second overlap edge along notional fold line It rises and overlapped, then the bottom edge of the film is turned up and overlapped along notional fold line, it will be under the second weld mold Mold is interspersed to be entered the bag body region and is attached under the overlapping region, is welded into using the upper mold of the second weld mold Lap joint weld seam, so that sheet film is connected into an entirety；

S4: the bag body is placed on the lower mold of third weld mold, using third weld mold by flange welding picking bag bottom Upper mold welded along the corner region of lap joint weld seam, formed edge-flange joint weld seam.

The method of another kind manufacture specimen bag, steps are as follows:

S1: the thin film raw material of tubular is die-cut to tubular film by cross cutting thin film raw material；

S2: welding sack will form the rim openings of the sack of specimen bag, and skirt materials bending be placed on the first welding mould On the lower mold of tool, weld to form tunnel using the upper mold of the first weld mold；

S3: second bottom edge of film is folded into the first bottom edge by overlap joint welding bag body so that the first bottom edge of the film and Second bottom edge, one substantially closed bag body region of overlapped formation；It will be described in the interspersed entrance of the lower mold of the second weld mold Bag body region is simultaneously attached under the overlapping region of the overlap edge, is welded into lap joint using the upper mold of the second weld mold Weld seam；

S4: crimping welds corner region, and the bag body is placed on the lower mold of third weld mold, is welded using third The upper mold bottom of mold is welded along the both ends corner region of weld seam, the edge-flange joint weld seam is formed, so that lap joint be welded The entirety that seam and the film solder are sealed at one.

Detailed description of the invention

In order to more fully understand essence of the invention, it is described in detail below in conjunction with attached drawing, in which:

Fig. 1 is that first embodiment of the invention takes sundries tool to be in the perspective view of retracted mode；

Fig. 2 is the perspective view for taking sundries tool to be in unfolded state shown in Fig. 1；

Fig. 3 is the explosive view that sundries tool is taken shown in Fig. 2；

Fig. 4 is sack closed simulation drawing when sundries tool being taken to use shown in Fig. 2；

Fig. 5 is the simulation drawing for taking sundries tool to remove after conduit and spreading mechanism described in Fig. 4；

Fig. 6 is the schematic diagram of prior art heat-sealing machine heat seal process；

Fig. 7 is the stereoscopic schematic diagram of the specimen bag 100 of the prior art；

Fig. 8 is the 8-8 cross-sectional view of specimen bag shown in Fig. 7；

Fig. 9 is the schematic diagram that welding point failure mode is welding edge removing；

Figure 10 is the schematic diagram that welding point failure mode is transitional region fracture；

Figure 11 is the 11-11 cross-sectional view of specimen bag shown in Fig. 7；

Figure 12 is the film expanded view of first embodiment specimen bag 200；

Figure 13 is that film shown in Figure 12 completes the schematic diagram after tunnel welding；

Figure 14 is projection view of the first embodiment specimen bag 200 along weld seam side；

Figure 15 is the partial enlarged view at the bottom of specimen bag bag shown in Figure 14；

Figure 16 is the lap joint welding schematic diagram of specimen bag shown in Figure 14；

Figure 17 is the simulation drawing filling the specimen bag of tissue and extracting from patient skin small notch；

Figure 18 is the stereoscopic schematic diagram of prior art specimen bag 100；

Figure 19 is the 19-19 cross-sectional view of specimen bag shown in Figure 18；

Figure 20 is the stereoscopic schematic diagram of first embodiment specimen bag 200；

Figure 21 is the 21-21 cross-sectional view of specimen bag shown in Figure 20；

Figure 22 is the film expanded view of second embodiment specimen bag 300；

Figure 23 is that film shown in Figure 22 completes the schematic diagram after tunnel welding；

Figure 24 is projection view of the second embodiment specimen bag 300 along weld seam side；

Figure 25 is the partial enlarged view at the bottom of specimen bag bag shown in Figure 24；

Figure 26 is the film expanded view of 3rd embodiment specimen bag 400；

Figure 27 is that film shown in Figure 26 completes the schematic diagram after tunnel welding；

Figure 28 is projection view of the 3rd embodiment specimen bag 400 along weld seam side；

Figure 29 is the bottom of specimen bag bag shown in Figure 28 two-fold edge connector weld seam schematic diagram；

Figure 30 is the film expanded view of fourth embodiment specimen bag 500；

Figure 31 is that film shown in Figure 30 completes the schematic diagram after tunnel welding；

Figure 32 is projection view of the fourth embodiment specimen bag 500 along weld seam side；

Figure 33 is the partial enlarged view at the bottom of specimen bag bag shown in Figure 32；

Figure 34 is the film expanded view of the 5th embodiment specimen bag 600；

Figure 35 is that film shown in Figure 34 completes the schematic diagram after tunnel welding；

Figure 36 is projection view of the 5th embodiment specimen bag 600 along weld seam side；

Figure 37 is projection view of the another embodiment specimen bag 600a along weld seam side of specimen bag shown in Fig. 6；

Figure 38 is the film expanded view of sixth embodiment specimen bag 700；

Figure 39 is projection view of the sixth embodiment specimen bag 700 along weld seam side；

Figure 40 is the stereoscopic schematic diagram of the 7th embodiment specimen bag 800；

Figure 41 is the 41-41 cross-sectional view of specimen bag shown in Figure 40；

Figure 42 is the stereoscopic schematic diagram of the 8th embodiment specimen bag 900.

In all views, identical label indicates equivalent or similar part or component.

Specific embodiment

Disclosed herein is embodiment of the present invention, it should be understood, however, that disclosed embodiment is only of the invention Example, the present invention can be realized by different modes.Therefore, this disclosure is not to be construed to be restrictive, and It is the basis only as claim, and how uses basis of the invention as introduction those skilled in the art.

Embodiment of the disclosure is described in detail now with reference to attached drawing, for convenience of stating, the side of subsequent all Proximity operation persons It is defined as proximal end, and the side far from operator is defined as distal end.

The structure composition that one embodiment of the invention takes sundries tool 10 is illustrated in detail in Fig. 1-3.Briefly, object is taken Instrument 10 successively includes specimen bag 200, spreading mechanism 20, conduit tube component 30, Handleset 40 and binding 50 from distal end to proximal end. Conduit tube component 30 includes hollow conduit 33 and combined modular catheter portion 31 fixed thereto and modular catheter portion 32.It is different Under clinical application situation, the outer diameter of the hollow conduit 33 is different, and typical diameters are roughly divided into 5mm, 8mm, 10mm, 12mm and 15mm.Handleset 40 includes proximally arriving the sequentially connected finger ring 42 in distal end and hollow drive rod 41, and the drive rod 41 is fixed Position can move axially in hollow conduit 33 relative to the hollow conduit 33, in retracted mode (Fig. 1) and unfolded state Mobile spreading mechanism 20 and specimen bag 200 between (Fig. 2).

Spreading mechanism 20 includes elastomer 21 and the connecting shaft 22 connecting with 21 proximal end of elastomer, and the elastomer 21 wraps Two generally flexible or elasticity elastic webbings 23 and elastic webbing 24 are included, the elastic webbing 23 and 24 shape of elastic webbing are roughly the same And it is symmetrical arranged along connecting shaft 22.The elastic webbing 23 and elastic webbing 24 include the straightway 23b and straightway 24b positioned at proximal end And the stretch section 23a and stretch section 24a, the stretch section 23a and stretch section 24a of distal end have flexible and shape memory function Can, by the deformable storage of external force, removing external force can strut automatically.Mounting hole 23c is arranged in the proximal end the straightway 23b, described straight Mounting hole 24c is arranged in the proximal end line segment 24b, and the connecting shaft 22 and mounting hole 24c and mounting hole 23c corresponding position are provided with axis hole Elastic webbing 23 and elastic webbing 24 are simultaneously riveted in connecting shaft 22 by rivet 25 by 22a.The proximal end of the connecting shaft 22, which is inserted into, drives The distal end of lever 41, and be bonded by glue, it is threadedly coupled or the modes such as welding is connected and fixed.Those skilled in the art can be with Expect, the elastomer 21 and 22 connection type of connecting shaft are also possible to weld, the pin connection or elastomer 21 is direct Fixation is attached with 41 distal end of drive rod.

The specimen bag 200 includes sack 220 that is openable and collapsing, and is sealed made of the sack 220 extension The bag body 230 closed.The sack 220 includes around the tunnel of sack 222, and the tunnel 222 is to accommodate 20 He of spreading mechanism Binding 50.With reference to Fig. 2-3, the distal end of the binding 50 includes slip joint 51, and the distal end of the binding 50 passes through tunnel 211 and it Proximal end 53 passes through the slip joint 51, forms the binding ring 52 roughly the same with mouth size.The elastomer 21 is inserted into described In tunnel 222.It is described that sundries tool 10 is taken to complete after assembling usually to be wrapped in specimen bag 200 on elastomer 21 simultaneously (with reference to Fig. 2) It is accommodated within hollow conduit 33 (with reference to Fig. 1).The a variety of windings for taking sundries tool are disclosed in U.S. patent Nos US8986321 With storage mode, other take sundries tool patent with also disclose it is a variety of winding and store mode, a those skilled in the art couple Its slightly adaptation, that is, can be applied to the present invention.

In the present embodiment, the elastomer 21 has shape memory function, in the winding and receipts for taking sundries tool 10 The mode of receiving can convenient Automatic-expanding.Operator pushes drive rod 41 for the specimen bag 200 in retracted mode (Fig. 1) and struts Mechanism 20 is released to except hollow conduit 33, and elastomer 21 has shape memory function and restores automatically, thus by specimen bag 200 Automatically open (Fig. 2).Those skilled in the art is it is contemplated that the elastic webbing 23 of elastomer 21 and elastic webbing 24 can also be arranged The effect of strutting is realized at link mechanism.The spreading mechanism 20 that a kind of typical case takes sundries tool 10 has been described in this implementation, Conduit tube component 30 and Handleset 40, in addition to this, those skilled in the art is it is contemplated that by by U.S. patent Nos Spreading mechanism 20 in US5465731, US6383197, US8721658 etc. and this implementation, conduit tube component 30 and Handleset 40 It is replaced combination and protection scope of the present invention.

The relevant operation for taking 10 clinical application of sundries tool can substantially be divided into following several stages:

First stage: preproduction phase.Taking sundries tool inserted into the patient via puncture cannula and extending in retracted state To target area.Second stage: sundries tool stages of deployment is taken.Operation handle component 40 controls drive rod 41 by proximate phase Hollow conduit 33 is moved axially, until the spreading mechanism 20 and specimen bag 200 are completely exposed in the hollow conduit 33 Except, elastomer 21 has shape memory function and restores automatically, so that specimen bag 200 is automatically opened (Fig. 2).Third rank Section: the sample stage is wiped out.It takes sundries tool 10 under the cooperation such as endoscope unfolded state, navigates to pathological tissues or organ position Lower section is set, pathological tissues or organ are wiped out by operating scissors and are dropped into specimen bag 200.Fourth stage, sample take out rank Section.With reference to Fig. 4-5, first operation handle component 40 takes out spreading mechanism 20 via puncture cannula, while pulling the close of binding 50 End 53, so that slip joint 51 slides and reduces binding ring 52, so that the sack 201 of specimen bag 200 be collapsed.Then binding is pulled 50 take out specimen bag 200 and its sample contained via puncture cannula or via skin incision.During this, covered due to puncturing Bore or Minimally Invasive Surgery notch are smaller, and when cutting off larger tissue or organ, specimen bag 200 is by very big extruding force.Though The right various structures for taking sundries tool and application mode are had nothing in common with each other, but its function and are mainly substantially the same using step.The present invention The clinical application method for taking sundries tool 10, see also in US5465731 associated description understand, to be better understood by this hair Bright purposes.

Fig. 7 depicts a kind of typical specimen bag 100 of the prior art.The specimen bag 100 is usually by monolithic thin film (piece Material) doubling overlapping is welded or two panels film (sheet material) overlapping is welded.The material of film includes but is not limited to poly- second Alkene, polyvinyl chloride, polypropylene, nylon, Teflon, thermo-setting elastomer and thermoplastic elastomer (TPE) (such as polyurethane).Film weldering The technique connect includes but is not limited to heat welding, ultrasonic bonding, high-frequency welding, radiation welding, pulse welding etc..It is a kind of existing In implementation, the specimen bag 100 is heated after being overlapped by 101 doubling of monolithic polyurethane and is welded.The film 101 Wherein one end crimp and weld to form tunnel 111.The film 101 is several along the direction for being approximately perpendicular to the tunnel 111 What axis of symmetry 102 is folded to form the bag face 103 and bag face 104 to overlap substantially.Along the bag face 103 and bag face 104 The outer edge shape of overlapping carries out heating welding (abbreviation heat seal) and forms heat seal weld seam 105.The bag face 103, bag face 103 and weld seam 105 limit bag outlets 110 and from the sack 110 extension made of closed bag body 120.The tunnel 111 is along described Sack 110 is approximate circumferentially distributed.

Fig. 6 describes a kind of representative heat welding (referred to as heat seal) process of the existing manufacturing technology of specimen bag.Heat-sealing machine 60 It connect and can move along the vertical direction comprising the pedestal 66 and connected to it fuselage 67 fixed with ground installation, and with fuselage 67 Dynamic upper heat seal dynamic model 64 and the lower heat seal cover half 65 being connected and fixed with fuselage 67.The heat seal process of the specimen bag 100 can letter It is singly expressed as, first adjusts heat seal parameter (mainly include heat-seal temperature, heat sealed time and heat seal pressure), then by 101 weight of film It folds and is placed on lower heat seal cover half 65, finally start the heat seal welding that heat-sealing machine completes specimen bag 100.

One those skilled in the art is to be understood that the film heat seal (welding), i.e., in the molten state, film By the polymer segment phase counterdiffusion of heat seal region surface, infiltration, mutually wind so that biplate (or multi-disc) film welding exists Together.With reference to Fig. 7, bag face 103 and the mutual welding in bag face 104 form the specimen bag 100 comprising heat seal seam 105.Fig. 8 is depicted The schematic partial sectional view of 105 any position of heat seal seam, i.e., it is (thin that the described specimen bag 100 finer can be divided into film substrate 131 Film base material 151), transitional region 132 (transitional region 152) and welding area 133 (welding area 153).During film heat seal, Under the action of heat seal pressure, the film in a molten state in heat seal region is made to be calendered extrusion, to form the transition Region 132 (transitional region 152).The film thickness of the transitional region 132 (152) is less than the film substrate 131 (151) Thickness.

In general, according to the heat sealing strength and failure mode difference of welding area and transitional region, it can be by the heat seal seam It is divided into underheat conjunction, three classifications of standard heat seal and excessive heat seal.The underheat is closed, i.e. the surface in heat seal region is melted, ginseng With the thinner thickness of the film of heat seal, failure mode when heat sealing strength is tested is welding area removing, and test result is lower than Target value.The thickness of the standard heat seal, i.e. film that the surface in heat seal region is melted, participating in heat seal is moderate, and fail mould Formula is welding area removing, and heat sealing strength test result reaches target value.The excessive heat seal, i.e. the surface quilt in heat seal region The thickness of fusing, participation heat seal film is too many, causes the thickness of the transitional region significantly thinning, so that transitional region Structural strength be significantly lower than the peel strength of the welding area, this phenomenon is often referred to simply as " root is cut ", and the mould that fails Formula is transitional region fracture, and heat sealing strength test result is lower than target value.In addition in standard heat seal, claim heat sealing strength test value most Big heat seal seam is best heat seal seam.One those skilled in the art is appreciated that using different heat seal parameters, determines The heat seal seam 105 is that underheat is closed, standard heat seal or excessive heat seal.

One those of ordinary skill is readily apparent that, can pass through best heat seal parameter needed for experiment acquirement standard heat seal.Food In product packaging and medical package field, especially in blood product packaging bag manufacturing field, plastic film heat seal has been carried out greatly Quantity research.It is disclosed the prior art indicate that, usual heat-seal temperature, the comprehensive function of heat seal pressure and heat sealed time determines modeling Expect the heat sealing quality of film, and influence of the heat-seal temperature for heat sealing quality is maximum, heat seal pressure and heat sealed time are to described The influence of heat sealing quality is relatively small or negligible.

In food packaging and medical package field, best heat-seal temperature is usually obtained with experimental method.Usually preset One heat sealing strength receives standard (i.e. target value), then according to heat seal of the test method to test specimen as defined in authoritative standard Intensity is tested, and test result satisfaction receives standard and then assert that the heat-seal temperature is reasonable temperature or optimum temperature.Such as it is right In peelable packaging bag (packaging bag manually torn when convenient to use), usually according to the " ASTM of American Society Testing and Materials F88 flexible barrier material sealing intensity test method " it is tested, dominant failure mode when sample test is the stripping of heat seal region From (Fig. 9), test result is essentially identical to the true heat sealing strength of sample.And for bags of blood, bag filter etc. can not It removes packaging bag (packaging bag when use without manually tearing), usually according to the " ASTM of American Society Testing and Materials F2029 measures flexible material heat seal capability thermal weld code of practice by measurement sealing intensity " it is tested, sample test When dominant failure mode be that heat seal region removes (Fig. 9) or transitional region and is broken (Figure 10).The transitional region phenomenon of rupture, Being primarily due to local excessive heat seal causes the thickness of corresponding transitional region significantly thinning, and the intensity so as to cause part significantly drops It is low.When failure mode when sample test is that transitional region is broken, the true heat seal that test result is less than sample is strong Degree.But as long as test result, which meets, receives standard, still assert that the heat-seal temperature is reasonable temperature or optimum temperature.It should It particularly points out, the establishment of the optimum temperature depends primarily on its test method and receives standard, therefore best heat-seal temperature Do not indicate that the heat sealing strength of its heat seal seam is best.When heat sealing strength test failure mode be heat seal region remove rather than When transitional region is broken, and when the peeling force maximum of heat seal region, referred to as best heat seal, and the heat-seal temperature of its sample is referred to as best Heat-seal temperature, more accurately, commonly referred to as this optimum temperature parameter is theoretical optimum temperature or ideal optimum temperature.

When usually obtaining best heat-seal temperature with experimental method, not by clamping apparatus error, by heat-sealing film error and environment The factors such as error introduce overall merit.And when actual production manufacture, due to film thickness error, film out-of-flatness, heat seal work folder Have an error, the combined influence of the factors such as uneven heating, especially for heat seal seam is longer and the poor material of sealability (such as Thermoplastic elastomer (TPE)), it heat seal (welding) is carried out using theoretical optimum temperature is easy to appear Local residues gap, is i.e. heat seal seam Sealing integrity is not up to standard.Product longer for heat seal seam or that heat sealing performance is poor, the sealing integrity of heat seal seam and Heat sealing strength be it is conflicting, for ensure sealing integrity generally have to using excessively heat-sealing, i.e., must sacrifice heat sealing strength. It is the most critical index that must satisfy in the sealing integrity of food packaging and medical package field, packaging, and heat sealing strength For secondary index.Food packaging and medical package field are usually to meet sealing integrity as most critical index, in this premise item Lower heat-seal temperature is selected under part to obtain preferable heat sealing strength, the best heat-seal temperature used is most usually above theory Good temperature.When carrying out heat seal with this best heat-seal temperature, most of region of usual same heat seal seam belongs to the standard hot Close and its regional area belongs to the excessive heat seal.

Up to the present, disclosed, less, mesh is studied for the heat seal of laparoscope dedicated specimen bag of the present invention The experience of food packaging and medical package field is usually continued to use in the preceding specimen bag batch heat seal when manufacturing, i.e., theoretical using being higher than Optimum temperature carry out heat seal with simultaneously obtain sealing integrity and preferable heat sealing strength, inevitably, the formation it is same Most of region of one heat seal seam belongs to the standard heat seal and its regional area belongs to the excessive heat seal.With reference to Fig. 7, figure 8 and Figure 11, such as the specimen bag 100 is under the conditions of best heat-seal temperature when heat seal, most of area of the heat seal seam 105 Domain belongs to standard heat seal (its heat seal seam figure is referring to Fig. 8), and the regional area of heat seal seam 105 belongs to excessive heat seal (its heat Splice grafting stitches figure referring to Figure 11).With reference to Figure 11, as it was noted above, the local excessive heat seal leads to 132 part of transitional region It is significant thinning, it is significantly reduced so as to cause the intensity of part.

With reference to Fig. 4-5, as it was noted above, by the pathological tissues or organ of specimen bag and its splendid attire via puncture cannula or warp When being taken out by skin incision, since puncture cannula internal diameter or Minimally Invasive Surgery notch are smaller, specimen bag is held by very big extruding force Easily lead to extraction bag rupture.And intensity caused by local excessive heat seal significantly reduces the rupture wind for just greatly increasing specimen bag Danger.One those skilled in the art is readily apparent that the intensity of specimen bag can be increased by increasing film thickness, however when specimen bag is used for Aforementioned when taking in sundries tool, since the size of conduit limits, conduit can not be accommodated in by increasing film thickness and typically resulting in specimen bag Interior or specimen bag can not be released from conduit.Simultaneously as specimen bag has sealed commonly used in containing pathological tissues or organ Whole property is also of equal importance, any work revealed the risk that can all can increase patient's inadvertent contamination or increase subsequent cleaning treatment It measures.The hot bonding method for obtaining sealing integrity and the hot bonding method for obtaining best heat sealing strength be it is conflicting, to current Until there are no good methods to solve this conflict.

In view of the size-constrained system of film thickness, and very big extruding force is subjected to when specimen bag clinical application, therefore right It is that the upper limit, intensity are not the bigger the better in the pursuit of specimen bag intensity.And it is broken in up to the present specimen bag clinical application The case split still happens occasionally.Those skilled in the art may be it will be appreciated that most have generation what this field maintained the leading position The product of table, i.e., with trade nameEndo Catch^TMWithMass production is sold and what is used takes object Instrument, there is also a degree of cracking probability.Up to the present, specimen bag rupture almost not can avoid in use, and And the transitional region in commissure usually occurs for rupture；Disclosed control measure generally include to select better film material Material and preferably welding control Heat-seal parameter, these measures can a degree of reduction weld seam slip gradient, however still need to continue It improves.

For one those skilled in the art it should be understood that when two sheet metals are welded to each other, welding point form is numerous, presses Joint form can be roughly divided into banjo fixing butt jointing, edge joint, corner joint, T connector, cruciform joint, lap joint and crimping The types such as connector.Although the intensity of different welding points is variant, different welding point forms mainly adapt to product shape The needs of shape and structure.For plastic film (sheet material) welding, a variety of welding methods theoretically can also be used and welding connects Capitiform formula, due to very thin thickness and whole soft freely deformable, film solder field does not consider complicated welding point usually Form.What is be widely used at present is that be soldered two films overlapped, then welds along its overlapping edge, when will be overlapped thin Film water horizontal drawing is opened, and the shape of welding point is similar to the edge-flange joint of metal welding, defines the film solder of this type herein Connector is edge-flange joint (referring to Figure 18-19).Up to the present, the disclosed specimen bag in this field and commercialized sample The welding point of bag is nearly all edge-flange joint.Moreover, food packaging, it is disclosed in medical package and other field For film welded research, mostly just studied for crimping welding joint style；The welding point of other forms Research and application are very rare.Wherein one of the main reasons is edge-flange joint welding form most simply and convenient for automatic metaplasia It produces, the second is the whole soft freely deformable based on film, has no reason also not having using the welding point of other forms is aobvious It is necessary to.

Research shows that the specimen bag of this field is welded its intensity using lap joint and is much larger than using edge-flange joint weldering It connects.The lap joint is that only its seam edge is mutually overlapping between two soldered films, and the substrate area of film is not overlapped, With reference to Figure 12-14 and Figure 20-21.It is appreciated that this scheme, needs enough Elasticities, plastoelasticity and plastic material are special It is not the knowledge background of thermoplastic elastomer (s), in the beneficial effect for explaining this scheme with an experiment case study first.

Experiment case study 1: the tensile strength difference connect for comparison edge-flange joint welding and lap joint selects same material Material, process equipment, machined parameters, test equipment and test method carry out, to exclude other disturbing factors.It is finer, it selectsThe film of RxT85A polyurethane material and the 0.1 ± 0.02mm thickness produced with rolling process, is cut into 200mm × 200mm Sample carry out heat seal welding.Welding parameter: 180 ± 2 DEG C of welding temperature, 0.2 ± 0.01Mpa of welding pressure, weld interval 1 ± 0.2s, 3 ± 0.2mm of weld width.It is tested using method as defined in ASTM F2029-08, test result is as follows table:

The weld strength contrast test table of 1 edge-flange joint of table and lap joint

It can be seen that for this experiment from the test result of table 1, the tensile strength of lap joint is much larger than the drawing of edge-flange joint Stretch intensity.Different materials or essentially identical using the test result of different welding parameters are replaced, it is no longer superfluous herein to save length It states.This test result seems not meeting the judgement that daily experience is made, however is to meet materialogy and theory of mechanics.It is ripe The technical staff for knowing plastic material and Elasticity is to be understood that: first, plastic material especially thermoplastic elastomer (s) Usually belong to anisotropic material, and plastic film is typical anisotropic material, the material along film surface direction is strong Degree is much larger than the intensity of its thickness direction；Second, in the Tensile Fracture Process of film, elastic elongation and become first in thickness direction It is thin, plastic deformation then occurs to being more than that material limits are broken, the place that elongation strain and thinning most serious occurs is material Weakest link.For edge-flange joint form welding sample extension test when, the adjacent domain (i.e. transitional region) of weld seam is main It to be acted on by shearing force and bending force, and the intensity of thickness direction of film itself is relatively poor, therefore relatively easy generation is disconnected It splits.For lap joint form weld seam sample extension test when, since the weld seam of lap joint has self booster action so that The elongation strain of weld seam and its transitional region is smaller, and the closer region in position of the fixed sample of distance test fixture, due to answering Power is concentrated and film elongation is thinning serious, and becoming weakness zone and being plastically deformed in generation is extremely more than that material limits are broken.To sum up Described, when welding specimen bag using edge-flange joint mode, the intensity for increasing thin-film material can not significantly solve aforementioned rupture Problem.And when welding specimen bag using lap joint mode, weld seam and its close region have not been weak links, specimen bag For actual strength close to the intensity of thin-film material, the intensity for increasing thin-film material can significantly increase the intensity of the specimen bag.

The structure and composition of first embodiment of the present invention specimen bag 200 is illustrated in detail in Figure 12-15.The specimen bag 200 comprising it is openable and collapse sack 220, and from the sack 220 extension made of closed bag body 230.The bag Mouth 220 is comprising around the tunnel of sack 222, the tunnel 222 is to accommodate spreading mechanism 20 and binding 50.Of the invention one A aspect welds to form the bag body 230 using lap joint mode.

In a kind of scheme, the specimen bag 200 is welded by the folding of monolithic polyurethane 210.It is described with reference to Figure 12 Bottom edge 213 of the film 210 comprising top margin 211 and corresponding thereto；First overlap edge, 212 one end connects top margin 211 and its other end Connect bottom edge 213；Second overlap edge, 214 one end connects top margin 211 and its other end connects bottom edge 213.With reference to Figure 12-13, top Side 211 folds along notional fold line 223 and welds to form weld seam 225, and the weld seam 225 limits tunnel 222.

With reference to Figure 13, the film 210 is turned up along notional fold line 216 and notional fold line 218, thus by described thin Film 210 is divided into three parts: first bag of face 215, second bag of face 217 and third bag face 219.With reference to Figure 13-14, first overlap joint Side 212 and the second overlap edge 214 are overlapped, usual overlapping region width B range: 1mm≤B≤5mm.Along its overlapping region It carries out welding and forms lap joint weld seam 233 to which first bag of face 215 and third bag face 219 are connected into an entirety.Such as figure 14-15 is welded along the outer edge on the bottom edge 213, forms edge-flange joint weld seam 235 to by first bag of face 215, and second bag Face 217 and third bag face 219 link into an integrated entity.First bag of face 215, second bag of face 217, third bag face 219, lap joint weld seam 233 and edge-flange joint weld seam 235 collectively form bag body 230.The tunnel 222 limits bag outlet 220.

The method of the lap joint welding and edge-flange joint welding is completely different.With reference to Fig. 6-8, the edge-flange joint When welding, constitute welding point two panels film (sheet material) it is overlapped after be placed on lower weldering mould, then upper weldering mould is moved down Start welding after to stroke end, welds to form weld seam 105 along the outer edge of two overlapping templates.With reference to Figure 14, Figure 16, Figure 20 And Figure 21, when the lap joint welds, constituting the two panels film of welding point, only its welding edge is overlapped, and two panels is thin The substrate of film is not overlapped (in the opposite direction).It is not to place specimen bag and when the lap joint welding of specimen bag 200 On lower mold, but lower mold is interspersed in inside specimen bag and under the lap in two panels film, then will be upper Mold starts welding after being displaced downwardly to stroke end, welds to form weld seam 233 along overlapping region.Figure 21 depicts the weld seam The schematic partial sectional view of 233 any positions, i.e., the described specimen bag 200 finer can be divided into 241 (film substrate of film substrate 251), transitional region 242 (transitional region 252) and welding area 243 (welding area 253).It is similar to edge-flange joint, it is described to take The film thickness for connecing the transitional region 242 (252) of weld is less than the thickness of the film substrate 241 (251).

Those skilled in the art is to be understood that the bag body 120 of the specimen bag 100 can be disposably welded into Type, and the bag body 230 of the specimen bag 200 usually can not disposable welding fabrication because lap joint welding may cause Its weld seam 233 can not constitute the bag body being fully sealed together with soldered film, therefore usually require to carry out second of crimping Welding point welding.In addition the notional fold line 216 and notional fold line 218 exist only in the welding process of lap joint In, there is no apparent virtual broken lines in the finished product of specimen bag 200.

Intensity of the specimen bag 200 for the specimen bag 100 when its clinical application significantly improves.With reference to figure 18-19, when being put into enough samples or tissue in the specimen bag 100, the specimen bag 100 becomes approximately conical, and The weld seam 105 shows as typical edge-flange joint weld seam (Figure 19), when the specimen bag 100 equipped with a large amount of pathological tissues is from patient When small notch pulls out (Figure 17), the transitional region 132 (152) of flanged edge weld is easy to send out by large curved power and shearing force Raw fracture.With reference to Figure 20-21, when being put into enough samples or tissue in the specimen bag 200, the specimen bag 200 becomes Approximately conical, the weld seam 233 shows as typical lap joint weld seam (Figure 21), when the sample that a large amount of pathological tissues are housed When bag 200 is pulled out from patient's small notch (Figure 17), lap joint is mainly by pulling force effect and due to the local strengthening of lap joint Effect, is not easy to produce fracture at the transitional region 242 (252) of the weld seam.In conjunction with described previously it is found that 200 He of specimen bag The intensity of specimen bag 100 is determined that therefore, the intensity of the specimen bag 200 is increased to described by this by weakest region intensity 4~5 times of 100 intensity of specimen bag.

With reference to Fig. 4, Fig. 5 and Figure 17, when the specimen bag for being loaded with pathological tissues is stored and extracted, there is no quilts for usual sack It is fully sealed.Thus a those skilled in the art are it is contemplated that when the specimen bag is stored and extracted, the internal liquid contained The extruding force very little that body is not under compression power or is subject to, otherwise liquid is spouting by the sack not being fully sealed from specimen bag. Those skilled in the art is to be understood that when specimen bag is stored and is extracted, and contains tissue and sample bag body is applied Non-uniform extruding force.Finer, as shown in figure 17, when the specimen bag 200 is extracted, the bag body 230 is relatively large in diameter Region bear biggish extruding force.And after the major part of the bag body 230 is extracted by skin incision, it is described The bottom of bag body 230, i.e., the extruding force that the close region of the described edge-flange joint weld seam 235 is born is smaller, the edge-flange joint weldering The probability of 235 fracture of seam is lower.

The structure and composition of second embodiment of the present invention specimen bag 300 is illustrated in detail in Figure 22-25.The specimen bag 300 comprising it is openable and collapse sack 320, and from the sack 320 extension made of closed bag body 330.The bag Mouth 320 is comprising around the tunnel of sack 322.In a kind of embodiment, the specimen bag 300 is folded by cylindrical thin-film 310 and is welded It connects.With reference to Figure 22, first bottom edge 313 and second bottom edge 314 of the film 310 comprising top margin 311 and corresponding thereto.Ginseng Figure 22-23 is examined, top margin 311 to form weld seam 325 along folding and welding, and the weld seam 325 limits tunnel 322.With reference to Figure 23- 24,314 length of the second bottom edge is greater than the first bottom edge 313, second bottom edge 314 is turned up, so that first bottom edge 313 and second bottom edge 314 it is overlapped.Welding, which is carried out, along its overlapping region forms lap joint weld seam 333 thus will be described It closes into an entirety bottom of tubular film 310.The bag body 330 of the specimen bag 300 usually can not disposable welding fabrication, Because lap joint welding may cause its weld seam 333 can not constitute the bag body being fully sealed together with soldered film, Therefore it generally requires to carry out second of crimping welding weld.Such as Figure 24-25, along the both ends corner region of the weld seam 333 Welding forms edge-flange joint weld seam 334 and edge-flange joint weld seam 335, thus by lap joint weld seam 333 and the film 310 It is welded into the entirety of a sealing.The tubular film 310, weld seam 334, weld seam 335 and weld seam 333 collectively form bag body 330, And the tunnel 322 limits bag outlet 320.The specimen bag 300 have the advantages that function similar with the specimen bag 200 and, And the manufacture preferably of specimen bag 300 is at the specimen bag of large capacity.

Figure 26-29 depicts the structure and composition of 3rd embodiment specimen bag 400.The specimen bag 400 includes sack 420, and from the sack 420 extension made of closed bag body 430.The sack 420 includes around the tunnel of sack 422.The specimen bag 400 is welded by the folding of monolithic thin film 410.With reference to Figure 26, the film 410 includes 411 He of top margin Bottom edge 413 corresponding thereto；First overlap edge, 412 one end connects top margin 411 and its other end connects bottom edge 413；Second overlap joint 414 one end of side connects top margin 411 and its other end connects bottom edge 413.With reference to Figure 26-27, top margin 411 is along notional fold line 423 fold and weld to form weld seam 425, and the weld seam 425 limits tunnel 422.With reference to Figure 27, along 416 He of notional fold line Notional fold line 418 turns up the film 410, so that the film 410 is divided into three parts: first bag of face 415, second bag Face 417 and third bag face 419.With reference to Figure 27-28, first overlap edge 412 and the second overlap edge 414 are overlapped.Along Its overlapping region carries out welding and forms lap joint weld seam 433 to which first bag of face 415 and third bag face 419 are connected into one It is whole.Such as Figure 29, is welded along the outer edge on the bottom edge 413, form the first edge-flange joint weld seam 434 and the second edge-flange joint Weld seam 435, so that second bag of face 417 and third bag face 419 link into an integrated entity by first bag of face 415.First bag of face 415, second Bag face 417, third bag face 419, the weld seam 433, the weld seam 434 and the weld seam 435 collectively form bag body 430.And institute It states tunnel 422 and limits bag outlet 420.

In a kind of embodiment, the first edge-flange joint weld seam 434 is excessive fusion weld, and second spinning Head weld seam 435 is the mixing weld seam comprising standard welding and deficient welding.The weld seam 435 helps to increase the intensity of weld seam, and The excessive welding of the weld seam 434 is to ensure sealing integrity.Wherein owe that the surface of welding, that is, welding region is melted, participate in it is molten The thinner thickness of the film of conjunction, failure mode when weld strength is tested is removed for the welding area of specimen bag, and test result Lower than target value.The thickness of film that standard welding, that is, welding region surface is melted, participating in fusion is moderate, weld strength Failure mode when test is that the welding area of specimen bag is removed, and test result reaches target value.Excessive welding, that is, welding section The thickness of film that the surface in domain is melted, participating in fusion is too many, causes between specimen bag welding area and specimen bag substrate Transitional region thickness it is significantly thinning, weld strength test when failure mode be transitional region be broken, heat sealing strength survey Test result is lower than target value.The lap joint weld seam 433 and the weld seam 435 help to improve specimen bag weld strength, from And increase the intensity of the specimen bag 400.

The structure and composition of fourth embodiment of the present invention specimen bag 500 is illustrated in detail in Figure 30-33.The specimen bag 500 comprising it is openable and collapse sack 520, and from the sack 520 extension made of closed bag body 530.The bag Mouth 520 is comprising around the tunnel of sack 522.The specimen bag 500 by monolithic thermoplastic's elastomer thin film 510 fold welding and At.With reference to Figure 30, bottom edge 513a and bottom edge 513b of the film 510 comprising top margin 511 and corresponding thereto；First overlap edge 512 one end connect top margin 511 and its other end connects bottom edge 513a；Second overlap edge, 514 one end connects top margin 511 and its is another End connection bottom edge 513b.With reference to Figure 30-31, top margin 511 folds along notional fold line 523 and welds to form weld seam 525, described Weld seam 525 limits tunnel 522.Intend fold line 516 and notional fold line 517 for institute along notional fold line 515 with reference to Figure 31 Film 510 is stated to turn up so that first overlap edge 512 and the second overlap edge 514 are overlapped, while the bottom edge 513a and Bottom edge 513b is overlapped.Welding, which is carried out, along overlapping region forms lap joint weld seam 533 and lap joint weld seam 534.Institute State the bag body 530 of specimen bag 500 usually can not disposable welding fabrication because lap joint welding may cause its weld seam 534 can not constitute the bag body being fully sealed together with soldered film, therefore generally require second of crimping of progress and connect Head welding.Such as Figure 32-33, weld to form edge-flange joint weld seam 535 along 534 corner region of weld seam.The film 510, takes Joint welding 533 is connect, lap joint weld seam 534 and edge-flange joint weld seam 535 collectively form bag body 530.And the tunnel 522 limits Make sack 520.It is disclosed in U.S. patent Nos US5480404, sample bag shape is designed to truncated cone body, and (i.e. base diameter is small And the big specimen bag of mouth diameters), be conducive to using when be packed into specimen bag bag tissue and be conducive to reduce be pulled out when Expansion effect for patient incision.The specimen bag 500 includes 2 lap joint weld seams and a shorter edge-flange joint weldering Slit at the structure being gradually reduced slave sack to bag bottom diameter, be equally beneficial for using when to loading group in 500 bags of specimen bag It knits and is conducive to reduce when being pulled out and the expansion of patient incision is acted on.Moreover, what the lap joint weld seam 534 was formed Local corner region is conducive to contain the watery blood or body fluid flowed out after pathological tissues are extruded.

The structure and composition of fifth embodiment of the present invention specimen bag 600 is illustrated in detail in Figure 34-37.The specimen bag 600 comprising it is openable and collapse sack 620, and from the sack 620 extension made of closed bag body 630.The bag Mouth 620 is comprising around the tunnel of sack 622.The specimen bag 600 by monolithic thermoplastic's elastomer thin film 610 fold welding and At.With reference to Figure 34, bottom edge 613a, bottom edge 613b and bottom edge 613c of the film 610 comprising top margin 611 and corresponding thereto；The One overlap edge, 612 one end connects top margin 611 and its other end connects bottom edge 613a；Second overlap edge, 614 one end connects top margin 611 And its other end connects bottom edge 613c.With reference to Figure 34-35, top margin 611 folds along notional fold line 623 and welds to form weld seam 625, the weld seam 625 limits tunnel 622.Intend fold line 616 and notional fold line along notional fold line 615 with reference to Figure 35 617 turn up the film 610, so that first overlap edge 612 and the second overlap edge 614 are overlapped, while the bottom Side 613b and bottom edge 613c are overlapped.Welding, which is carried out, along overlapping region forms lap joint weld seam 633 and lap joint weldering Seam 634.The bag body 630 of the specimen bag 600 usually can not disposable welding fabrication because lap joint welding may cause Its weld seam 634 can not constitute the bag body being fully sealed together with soldered film, therefore generally require to carry out second of crimping Welding point welding.It welds to form edge-flange joint weld seam (not shown) along 634 corner region of weld seam.The film 610, takes Joint welding 633 is connect, lap joint weld seam 634 and edge-flange joint weld seam collectively form bag body 630.And the tunnel 622 limits Bag outlet 620.

When aforementioned specimen bag 200,300,400,500 swells to form revolving body, the longest lap joint of its bag body is constituted Weld seam is all, referred to as plane and straight line type weld seam in the same plane with the axis of rotation of formed revolving body.And it is described When specimen bag 600 swells to form revolving body, the axis of the lap joint weld seam 633 and revolving body is not at approximately the same plane Interior, the weld seam 633 is distributed along the surface of revolving body in space curve, referred to as space curve type weld seam.The skill of this field Art personnel are to be understood that relative to other weld seams, the inclined weld seam 633 is conducive to improve in specimen bag use process Welded seam area problem of stress concentration.Since the plastic film material is notch sensitiveness material, when weld seam partial fracture Afterwards, breach can cause specimen bag to be quickly completely severed along the transitional region fast growth of aforesaid rectilinear type weld seam；And it is described Shaped form weld seam is conducive to prevent breach along the transitional region fast growth of weld seam, to reduce the quick and complete rupture of specimen bag Risk.The weld seam 633 of the specimen bag 600 is skew lines, however can also use full curve weld seam.The mark that Figure 37 is disclosed This bag of 600a and the specimen bag 600 are substantially equivalent, and the main distinction is the lap joint weld seam 633a of the specimen bag 600a It is the weld seam of tracing pattern.

Figure 38-39 depicts the structure and composition of sixth embodiment of the present invention specimen bag 700.The specimen bag 700 wraps Containing it is openable and collapse sack 720, and from the sack 720 extension made of closed bag body 730.The sack 720 Comprising around the tunnel of sack 722.The specimen bag 700 is welded by the folding of monolithic thermoplastic's elastomer thin film 710.It is described Bag body 730 includes lap joint weld seam 733 and lap joint weld seam 734.

Figure 40-41 depicts the structure and composition of seventh embodiment of the present invention specimen bag 800.The specimen bag 800 wraps Containing it is openable and collapse sack 820, and from the sack 820 extension made of closed bag body 830.The sack 820 Comprising around the tunnel of sack 822.The specimen bag 800 is welded by the folding of monolithic thermoplastic's elastomer thin film 810.It is described Specimen bag 800 is similar to the structure of the specimen bag 200 and shape.Such as make first overlap edge of the specimen bag 200 212 and second overlap edge 214 staggeredly without being overlapped, then be respectively welded along first overlap edge 212 and the second overlap edge 214, Form two overlapping the slot: lap joint weld seam 833 and lap joint weld seam 834.It is described to connect joint welding 833 and overlap joint connects There are interstice coverages between head weld seam 834.The such then described specimen bag 200 is transformed into specimen bag 800.

Figure 42 depicts the structure and composition of eighth embodiment of the present invention specimen bag 900.The specimen bag 900 includes can Open and collapse sack 920, and from the sack 920 extension made of closed bag body 930.The sack 920 includes Around the tunnel of sack 922.The specimen bag 900 after the first film 911 and the second film 912 mutually overlap joint by being welded. The bag body 930 includes lap joint weld seam 933, lap joint weld seam 934 and lap joint weld seam 935.The technology of this field Personnel by the weld seam of more multi-disc film or more it is contemplated that can theoretically be produced a variety of different specimen bags, however increase Film the piece number and weld seam quantity often significantly increase manufacturing cost and introduce new risk point.

Those skilled in the art is to be understood that the specimen bag of lap joint and the edge-flange joint sample of the prior art The manufacturing method of bag is widely different, substantially comprising cross cutting thin film raw material, welds tunnel, overlap joint welding bag body, flange welding picking bag 4, bottom (or crimping welding corner region) key step.The step of one of manufacturing method, is substantially as follows:

S1: thin film raw material is die-cut to general shape such as sheet film 210 (see Figure 12) by cross cutting thin film raw material；In order to protect Quality is demonstrate,proved, thin film raw material is generally using cross cutting, and those skilled in the art is it is contemplated that can also be using shearing or other sanctions Cut means production sheet film 210.

S2: the edge of the film in the tunnel 222 for forming specimen bag is bent and is placed on the first weld mold by welding tunnel Lower mold on, weld to form tunnel 222 using the upper mold of the first weld mold (see Figure 13)；

S3: lap joint method welds bag body, turns up the film 210 along notional fold line 216 and notional fold line 218, makes Obtain one substantially closed bag body region of the overlapped formation of overlap edge of the two sides of the film 210；By the second weld mold Lower mold it is interspersed enter the bag body region and be attached under the overlapping region of the overlap edge, use the second weld mold Upper mold is welded into lap joint weld seam 233 (see Figure 16).

S4: edge-flange joint method welds bag bottom, and bag body 230 is placed on the lower mold of third weld mold, is welded using third It connects outer edge of the upper mold of mold along the bottom edge 213 to weld, forms the edge-flange joint weld seam 235 (see Figure 14).

Another optional manufacturing step is substantially as follows:

S1: the thin film raw material of tubular is die-cut to substantially such as 310 shape of tubular film (see Figure 22) by cross cutting raw material；

S2: the skirt materials bending for the tubular film for forming the tunnel 322 of specimen bag 300 is placed on the by welding tunnel On the lower mold of one weld mold, weld to form tunnel 322 using the upper mold of the first weld mold (see Figure 23)；

S3: lap joint method welds bag body, and 310 second bottom edge 314 of film is folded on the first bottom edge 313.So that institute State 314 one substantially closed bag body region of overlapped formation of the first bottom edge 313 and the second bottom edge of film 310；By second The lower mold of weld mold is interspersed to be entered the bag body region and is attached under the overlapping region of the overlap edge, and the second weldering is used The upper mold for connecing mold is welded into lap joint weld seam 333 (see Figure 24).

S4: edge-flange joint method welds corner region, and the bag body 330 is placed on the lower mold of third weld mold, is adopted It is welded with the upper mold bottom of third weld mold along the both ends corner region of weld seam 333, forms the edge-flange joint weld seam 335, To which lap joint weld seam 333 and the film 310 to be welded into the entirety of a sealing (see Figure 25).

Another optional manufacturing step is substantially as follows:

S1: thin film raw material is die-cut to general shape such as sheet film 410 (see Figure 26) by cross cutting thin film raw material；

S2: the skirt materials of the film in the tunnel 442 for forming specimen bag are bent and are placed on the first welding by welding tunnel On the lower mold of mold, weld to form tunnel 422 using the upper mold of the first weld mold (see Figure 27)；

S3: lap joint method welds bag body, turns up the film 410 along notional fold line 416 and notional fold line 418, will First overlap edge 412 and the second overlap edge 414 are overlapped, and the lower mold of the second weld mold is interspersed into the bag Body region is simultaneously attached under the overlapping region of the overlap edge, is welded into lap joint using the upper mold of the second weld mold and is welded Seam 433, so that first bag of face 415 and third bag face 419 are connected into an entirety (see Figure 28)；

S4: edge-flange joint method welds bag bottom, and bag body 430 is placed on the lower mold of third weld mold, is welded using third The upper mold for connecing mold is welded along the outer edge on bottom edge 413, forms the first edge-flange joint weld seam 434 and the second edge-flange joint weldering Seam 435, so that second bag of face 417 and third bag face 419 link into an integrated entity by first bag of face 415.(see Figure 29).

Another optional manufacturing step is substantially as follows:

S1: thin film raw material is die-cut to general shape such as sheet film 510 (see Figure 30) by cross cutting thin film raw material；

S2: the skirt materials in the tunnel 522 for forming specimen bag are bent and are placed on the lower die of the first weld mold by welding tunnel On tool, weld to form tunnel 522 using the upper mold of the first weld mold (see Figure 31)；

S3: lap joint method welds bag body, along notional fold line 515, intends fold line 516 and notional fold line 517 will be described thin Film 510 is turned up, and keeps the first overlap edge 512 and the second overlap edge 514 overlapped, while bottom edge 513a and bottom edge 513b phase mutual respect It is folded, the lower mold of the second weld mold is interted and enters the bag body region and is attached under the overlapping region of the overlap edge, Using the upper mold welding forming of the second weld mold at lap joint weld seam 533 and lap joint weld seam 534 (see Figure 32)；

S4: edge-flange joint method welds corner region, and bag body 530 is placed on the lower mold of third weld mold, using the The upper mold of three weld molds welds to form edge-flange joint weld seam 535 along 534 corner region of weld seam (see Figure 33).

What aforementioned overlap joint welding used is two oblique cut grafting of single layer, it should be appreciated by those skilled in the art that using 3 layers or more Layer overlap joint can also equally reach similar overlap joint effect.Especially for the corner region of aforementioned lap weld, using folding Forming multilayer overlap joint can be welded to avoid using crimping.Therefore, it is also this public affairs that those skilled in the art, which use similar multilayer overlap joint, The protection scope opened.

Many different embodiments and example of the invention are had shown and described.One ordinary skill of this field Personnel can make adaptive improvement to the method and instrument by suitably modified without departing from the scope of the invention. Such as simple adaptation is done using the specimen bag heat seal seam disclosed in other inventions, or use different process, such as adopt With pressure parameter, the various combinations such as temperature parameter or dwell time.Several kinds of amendment schemes are referred, for this field For technical staff, other amendment schemes are also to be contemplated that.Therefore the scope of the present invention should according to accessory claim, While it being understood not to the structure for being shown and being recorded by specification and attached drawing, the particular content of material or behavior is limited.

Claims (10)

1. a kind of overlap joint fuses specimen bag, described comprising sack that is openable and collapsing, and from bag body made of sack extension Sack includes circular tunnel, and the bag body further includes a bag bottom, it is characterised in that:

1) bag body includes sheet film, and the film includes the top margin that connect with the tunnel and in its both sides of the edge First overlap edge and the second overlap edge；

2) first overlap edge and the second overlap edge pass through overlapped and weld after notional fold line folding to the film It connects to form lap joint weld seam；

3) the lap joint weld seam includes welding area and transitional region, and the lap joint weld seam, which has, self to be reinforced making With preventing transitional region to be broken.

2. specimen bag as described in claim 1, it is characterised in that: the film also includes bottom edge, and the bottom edge passes through to institute State film along notional fold line folding after it is overlapped and weld form another lap joint weld seam.

3. specimen bag as described in claim 1, it is characterised in that: the film further includes third overlap edge and the 4th overlap joint Side, the third overlap edge and the 4th overlap edge pass through overlapped and weld shape after notional fold line folding to the film At another lap joint weld seam.

4. any specimen bag as described in claim 1-3, which is characterized in that further include by the wedge angle of the lap joint weld seam The edge-flange joint weld seam that region is welded, the edge-flange joint weld seam close the bag underseal.

5. any specimen bag as described in claim 1-3, which is characterized in that the specimen bag can swell to form hollow revolution Body, while the lap joint weld seam becomes space curve type weld seam.

6. specimen bag as described in claim 1, it is characterised in that: the film also includes bottom edge, along the bottom edge edge welding It connects to form edge-flange joint weld seam, the edge-flange joint weld seam closes the bag underseal.

7. specimen bag as claimed in claim 6, it is characterised in that: the edge-flange joint weld seam includes the first edge-flange joint weld seam With the second edge-flange joint weld seam；The first edge-flange joint weld seam includes excessive fusion weld or excessive welding and standard welding Weld seam is mixed, the second edge-flange joint weld seam includes the mixing weld seam of standard welding or standard welding and deficient welding.

8. a kind of overlap joint fuses specimen bag, it is characterised in that: include specimen bag as claimed in claim 1, the mark This bag further includes the binding being threaded through in the tunnel, and the binding can tighten the sack of specimen bag after receiving tissue specimen.

9. a kind of take sundries tool for Minimally Invasive Surgery, it is characterised in that: including specimen bag as claimed in claim 8, also wrap Containing conduit tube component and through its Handleset, and the spreading mechanism for strutting specimen bag being connect with the Handleset, The specimen bag and spreading mechanism are set in the conduit tube component and can be with respect to its axial movements；Make institute by Handleset operation It states specimen bag and spreading mechanism and to preceding promotion and stretches out sheath assembly in conduit tube component and strutted by the spreading mechanism；It is described Spreading mechanism is extracted out backward with the conduit tube component and is separated with the specimen bag, and the bracing wire is through the conduit tube component.

10. a kind of method for manufacturing specimen bag as claimed in claim 3, which is characterized in that steps are as follows:

S1: thin film raw material is die-cut to sheet film by cross cutting thin film raw material；

S2: the edge of the film in the tunnel for forming specimen bag is bent and is placed on the first weld mold by welding tunnel On lower mold, weld to form tunnel using the upper mold of the first weld mold；

S3: lap joint method welds bag body, first rolls over the first overlap edge of the film and the second overlap edge along notional fold line It rises and overlapped, then the bottom edge of the film is turned up and overlapped along notional fold line, it will be under the second weld mold Mold is interspersed to be entered the bag body region and is attached under the overlapping region, is welded into using the upper mold of the second weld mold Lap joint weld seam, so that sheet film is connected into an entirety；

S4: the bag body is placed on the lower mold of third weld mold, using third weld mold by flange welding picking bag bottom Upper mold welded along the corner region of lap joint weld seam, formed edge-flange joint weld seam.