CN207561929U - A kind of tubular specimen bag and take sundries tool - Google Patents

Abstract

The utility model is related to a kind of tubular specimen bag and sundries tool is taken, comprising the sack that can be opened and collapse and from the bag body that sack extension forms, the bag body is made of the film blank of tubular；The film blank is molded by being blow molded mode, the bag bottom film and the bag body transition region for being extended by it and being connected with sack film that the film blank includes opening, bag bottom film includes sealing device, for ensureing the leakproofness and intensity of bag body bottom, avoids the occurrence of leakage and rupture.

Description

A kind of tubular specimen bag and take sundries tool

Technical field

The utility model is related to Minimally Invasive Surgery instrument more particularly to a kind of specimen bag structures.

Background technology

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 safety easily taking-up intraluminal tissue or diseased organ, be always puzzlement it is micro- The problem of invasive procedures.Since the clinical practice 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 although the structure and occupation mode of the specimen bag are different：The first kind, single specimen bag. Disclose a kind of band line specimen bag of one-sided open in U.S. Utility Patent US5037379, when use need to be pressed from both sides using nipper It holds specimen bag body and enters patient's body using puncture conduit or small notch.Second class, comprising specimen bag, conduit and spreading mechanism Take sundries tool.It is disclosed in the U.S. Utility Patents such as US5465731, US5480404, US6383197 and a variety of takes sundries Tool, specimen bag take sundries tool to enter by puncturing conduit during use by rolling and being accommodated within conduit tightly by described Patient's body, then its spreading mechanism is pushed to release the specimen bag rolled to except conduit, and by spreading mechanism by sample Bag struts, and facilitates the tissue or diseased organ for being fitted into and being cut in operation.

The specimen bag is usually made of the plastic film of 0.01mm~0.1mm or plastic sheet.Up to the present, it is difficult to Specimen bag is manufactured by the way of global formation, generally use two panels film is overlapped heat seal or welding or using monolithic thin film Heat seal (welding) after doubling.It will be understood by those skilled in the art that heat seal (welding) seam of specimen bag is longer, due to heat The factors such as (welding) clamping apparatus error, heat seal (welding) pressure error, heat seal (welding) non-uniform temperature are closed, part easily occur The defects of gap or locally insecure seam, and be difficult to select the product containing such defect by measuring means.Produce in enormous quantities When, generally use, which improves heat seal (welding) temperature and increases the method for heat seal (welding) time, realizes excessive welding, it is ensured that seam Secured and noresidue gap.However excessively welding typically results in specimen bag main film body and the regional area thickness of seam transition is shown Write thinning, the strength of materials so as to cause the seam close region significantly reduces, and easily occurs damaged, and this phenomenon is commonly referred to as Be " root is cut ".

One those skilled in the art is readily apparent that specimen bag can be enhanced 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.The film maximum gauge of the specimen bag of the prior art usually≤0.1mm, it is and excessively molten Connection, which often results in aforementioned regional area thickness, reduces by 30%~50%, significantly reduces the intensity of specimen bag.Up to the present, In clinical practice, the emission probabilities of accident that when specimen bag clinical practice ruptures are still larger.It provides and safer more easily takes Go out the instrument or method of patient's interior tissue or diseased organ, help to improve the safety of Minimally Invasive Surgery, and will push minimally invasive The development for bigger of performing the operation.

Utility model content

Therefore, one purpose of the utility model is to provide a kind of leakproofness and fastness that can have both ensured specimen bag bag body, Ensure that bag body integral strength meets the specimen bag of requirement again simultaneously.

The utility model proposes a kind of tubular specimen bags of blow molding, include the sack that can be opened and collapse, Yi Jicong The sealed bag body that sack extension forms, wherein, the bag body is made of the film blank of tubular；The film blank passes through blowing Mode is molded, the bag bottom film and the bag body transition region for being extended by it and being connected with sack that the film includes opening, described Bag bottom film includes sealing device, for ensureing the leakproofness and intensity of bag bottom film, avoids the occurrence of leakage and rupture.

A kind of preferred technical solution, wherein, the sealing device, which includes at least, is arranged on bag bottom film outer peripheral the One weld seam, first weld seam include excessive fusion weld or standard welding and excessive welding mixing weld seam.

A kind of preferred technical solution, wherein, first weld seam carries out heat seal welding using overlap joint welding manner.

A kind of preferred technical solution, wherein, the sealing device is also comprising the second weldering being arranged on the inside of the first weld seam Seam, second weld seam include standard weld or deficient welding and standard welding mixing weld seam.

A kind of preferred technical solution, wherein, the sealing device is also comprising the band loop being arranged on the inside of the first weld seam Or the fixed knot being made of bag bottom film.

A kind of preferred technical solution, the sack are further included around the tunnel of sack.

A kind of preferred technical solution, also comprising bracing wire, the bracing wire is threaded through in the tunnel, and can the specimen bag After tissue specimen is received, the sack of specimen bag is tightened.

A kind of preferred technical solution, including aforementioned specimen bag, the Handleset also comprising conduit tube component and through it, And the spreading mechanism for strutting specimen bag being connect with the Handleset, the specimen bag and spreading mechanism are set on described lead It and can be with respect to its axial movement in tube assembly；The specimen bag and spreading mechanism are made in conduit tube component by Handleset operation It pushes forward and stretches out conduit tube component and strutted by the spreading mechanism；The spreading mechanism is extracted out backward with the conduit tube component It is detached with the specimen bag, the bracing wire is through the conduit tube component.

Description of the drawings

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

Fig. 1 is the stereogram that the utility model first embodiment takes sundries tool retracted mode；

Fig. 2 is the stereogram that the utility model first embodiment takes sundries tool unfolded state；

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

Fig. 4 is that sundries tool is taken to take object process schematic；

Fig. 5 is that sundries tool is taken to take the another schematic diagram of object process；

Fig. 6 is prior art heat seal welding specimen bag process schematic；

Fig. 7 is that the figure prior art carries out the specimen bag schematic diagram after heat seal；

Fig. 8 is the hot edge seal 10-10 sectional views under standard welding mode heat-sealing state of specimen bag shown in Fig. 7；

Fig. 9 is the specimen bag partial schematic diagram that failure mode is the stripping of heat seal region；

Figure 10 failure modes are the specimen bag partial schematic diagram of transitional region fracture；

Figure 11 is the excessive heat seal partial schematic diagram of specimen bag shown in Fig. 7；

Figure 12 is that specimen bag shown in Fig. 1 carries out Unitarily blowing formed schematic diagram；

Figure 13 is the Unitarily blowing formed rear film blank schematic diagram of specimen bag shown in Figure 12；

Figure 14 is the film blank cutting position schematic diagram of specimen bag shown in Figure 13；

Figure 15 is the film blank cutting separation schematic diagram of specimen bag shown in Figure 14；

Figure 16 is schematic diagram after the completion of the film blank of specimen bag shown in Figure 15 is cut；

Figure 17 is the tunnel manufacturing process schematic diagram of the sack of specimen bag shown in Fig. 1；

Figure 18 is that the tunnel of the sack of specimen bag shown in Figure 17 makes folding schematic diagram；

Figure 19 is that the tunnel of the sack of specimen bag shown in Figure 18 makes heat seal welding schematic diagram；

Figure 20 is the specimen bag blow moulding machine blow-molding process schematic diagram of the utility model second embodiment；

Figure 21 is the film blank schematic diagram of specimen bag shown in Figure 20；

Figure 22 is that the film blank of specimen bag shown in Figure 21 makes the tunnel schematic diagram of sack；

Figure 23 is that the tunnel of the making sack of specimen bag shown in Figure 22 folds schematic diagram；

Figure 24 is the tunnel welding schematic diagram of the making sack of specimen bag shown in Figure 23；

Figure 25 is bag bottom film the first weld seam schematic diagram of specimen bag shown in Figure 24；

Figure 26 is the second weld seam schematic diagram of specimen bag shown in Figure 25；

Figure 27 is the schematic diagram of the preferred technical solution of sealing device of specimen bag described in second embodiment；

Figure 28 is the schematic diagram of another preferred technical solution of the sealing device of specimen bag described in second embodiment；

Figure 29 is the schematic diagram of the another preferred technical solution of the sealing device of specimen bag described in second embodiment；

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

Specific embodiment

Disclosed herein is the embodiment of the utility model, it should be understood, however, that disclosed embodiment is only this reality With novel example, the utility model can be realized by different modes.Therefore, this disclosure be not to be construed for Restricted, but how to use this practicality new only as the basis of claim and as introduction those skilled in the art The basis of type.

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

One embodiment that the utility model is illustrated in detail in Fig. 1-3 takes the structure composition of sundries tool 10.Briefly, Take sundries tool 10 from distal end to proximal end successively comprising specimen bag 200, spreading mechanism 20, conduit tube component 30, Handleset 40 and drawing Line 50.Conduit tube component 30 includes hollow conduit 33 and combined modular catheter portion 31 fixed thereto and modular catheter portion 32.Under different clinical practice situations, 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, the driving Bar 41 is located in hollow conduit 33, and can be moved axially relative to the hollow conduit 33, in retracted mode (Fig. 1) and exhibition Mobile spreading mechanism 20 and specimen bag 200 between open state (Fig. 2).Spreading mechanism 20 includes elastomer 21 and and elastomer The connecting shaft 22 of 21 proximal ends connection, the elastomer 21 include two generally flexible or elasticity elastic webbings 23 and elastic webbing 24, the elastic webbing 23 and 24 shape of elastic webbing are roughly the same and arranged symmetrically along connecting shaft 22.The elastic webbing 23 and elasticity The straightway 23a and straightway 24a and stretch section 23b of distal end and stretch section 24b, the stretch section 23a are included with 24 proximal ends It with support elastic reaction and deformable storage or is strutted with stretch section 24b.The straightway 23a distal ends setting mounting hole 23c, the stretch section 24b distal ends setting mounting hole 24c, the connecting shaft 22 and mounting hole 24c and mounting hole 23c corresponding positions It is provided with axis hole 22a and passes through rivet 25 and elastic webbing 23 and elastic webbing 24 are riveted in connecting shaft 22.The connecting shaft 22 The distal end of drive rod 41 is inserted into proximal end, and is bonded by glue, and the modes such as threaded connection or welding connect fixation.The skill of this field Art personnel are it is contemplated that the elastomer 21 and 22 connection mode of connecting shaft can also be welding, pin connection or by the bullet Property body 21 is directly attached fixation with 41 distal end of drive rod.

The specimen bag 200 includes the sack 201 that can be opened and collapse and the envelope formed from the sack 201 extension The bag body 202 closed.The sack 201 is included around the tunnel of sack 211, and the tunnel 211 is accommodating 20 He of spreading mechanism Binding 50.With reference to figure 2-3, the distal end of the binding 50 includes slip joint 51, the distal end of the binding 50 pass through tunnel 211 and Its 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 institute It states in tunnel 211.It is described that sundries tool 10 is taken to complete that usually specimen bag 200 is wrapped on elastomer 21 (with reference to figure 2) after assembling And (with reference to figure 1) is accommodated within hollow conduit 33.It is disclosed in U.S. Utility Patent US8986321 and takes the more of sundries tool Kind winding and storage mode, other take sundries tool patent with also disclose it is a variety of winding and store mode, a common technology Personnel are to its slightly adaptation, you can applied to the utility model.

In the present embodiment, the elastomer 21 has shape memory function, and the winding for taking sundries tool 10 and receipts The mode of receiving can convenient Automatic-expanding.Operator pushes drive rod 41 by 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 It automatically opens (Fig. 2).Those skilled in the art is it is contemplated that the elasticity for elastomer 21 that the process change of elastomer 21 can be changed commanders Band 23 and elastic webbing 24 are arranged to link mechanism to realize the effect of strutting.In this implementation it is aforementioned in a kind of typical case have been described take The spreading mechanism 20 of sundries tool 10, conduit tube component 30 and Handleset 40, in addition to this, those skilled in the art can think It arrives, by by the spreading mechanism in U.S. Utility Patent US5465731, US6383197, US8721658 etc. and this implementation 20, conduit tube component 30 and Handleset 40 are replaced combination and the scope of protection of the utility model.

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

First stage：Preproduction phase.Take sundries tool inserted into the patient simultaneously via puncture cannula in retracted state Extend to target area.Second stage：Take sundries tool stages of deployment.Operation handle component 40 controls drive rod 41 from proximal end to remote End is moved axially relative to hollow conduit 33, hollow is led described until the spreading mechanism 20 and specimen bag 200 are completely exposed Except pipe 33, elastomer 21 has shape memory function and restores automatically, so as to which specimen bag 200 be automatically opened (Fig. 2).The Three stages：Wipe out the sample stage.Sundries tool 10 is taken to navigate to pathological tissues or device under the cooperations such as endoscope unfolded state Below official position, pathological tissues or organ are wiped out by operating scissors and are dropped into specimen bag 200.Fourth stage, sample take Go out the stage.With reference to figure 4-5, first operation handle component 40 takes out spreading mechanism 20 via puncture cannula, while pulls bracing wire 50 Proximal 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 it draws Dynamic bracing wire 50 takes out specimen bag 200 and its sample contained via puncture cannula or via skin incision.During this, due to Puncture cannula internal diameter or Minimally Invasive Surgery notch are smaller, so when cutting off larger tissue or organ, specimen bag 200 is by very big Extruding force.The clinical practice step for taking sundries tool is disclosed in detail in U.S. Utility Patent US5465731, although various take The structure and application mode of sundries tool are had nothing in common with each other, but its function and are mainly substantially the same using step.The utility model takes The clinical application method of sundries tool 10, the associated description that also can refer in US5465731 understand, new to be better understood by this practicality The purposes of type.

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) folding is welded or two panels film (sheet material) overlapping is welded.The material of film (sheet material) includes but not limited to poly- second Alkene, polyvinyl chloride, polypropylene, nylon, Teflon, thermo-setting elastomer (such as silica gel) and thermoplastic elastomer (TPE) (such as poly- ammonia Ester).The technique of film (sheet material) welding includes but not limited to heat welding, ultrasonic bonding, high-frequency welding, radiation welding, arteries and veins Punching welding etc..The specimen bag 100 of this example is welded using the overlapping heating of two panels polyethylene film.

Fig. 6 describes a kind of welding of representative heat (referred to as heat seal) process of the existing manufacturing technology of specimen bag.Heat-sealing machine 60 It connect and can vertically move comprising pedestal 66 fixed with ground installation and fuselage connected to it 67 and with fuselage 67 Dynamic upper heat seal dynamic model 64 and fixed lower heat seal cover half 65 is connect 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 including heat-seal temperature, heat sealed time and heat seal pressure), then by 103 He of film Film 105 is overlapped and is placed on lower heat seal cover half 65, finally starts 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 figure 7, film 103 and 105 mutual welding of film form the specimen bag comprising U-shaped heat seal seam 104 and sack 101 100.Fig. 8 depicts the schematic partial sectional view of 104 any position of heat seal seam, i.e., described specimen bag 100 finer can be divided into Film substrate 131 (film substrate 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 molten condition in heat seal region is made to be calendered extrusion, from And form the transitional region 132 (transitional region 152).The film thickness of the transitional region 132 (152) is less than described thin The thickness of film base material 131 (151).

In general, according to welding area and the heat sealing strength of transitional region and failure mode difference, 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 removed, and test result is less than for welding area Desired value.The standard heat seal, i.e. the thickness of film that the surface in heat seal region is melted, participating in heat seal is moderate, and fail mould Formula is removed for welding area, and heat sealing strength test result reaches desired value.The surface quilt of the excessive heat seal, i.e. heat seal region The thickness of fusing, participation heat seal film is too many, and the thickness for leading to the transitional region is 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 broken for transitional region, and heat sealing strength test result is less than desired 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, is determined The heat seal seam 104 is that underheat is closed, standard heat seal or excessive heat seal.

One those of ordinary skill is readily apparent that, the best heat seal parameter needed for standard heat seal can be obtained by experiment.Food Product are packed in medical package field, particularly in blood product packaging bag manufacturing field, plastic film heat seal have 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. desired 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.It is such as right In peelable packaging bag (packaging bag manually torn when easy to use), usually according to American Society Testing and Materials《ASTM F88 flexible barrier material sealing intensity test methods》It is tested, dominant failure mode during 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.It and can not for bags of blood, bag filter etc. Stripping packaging bag (packaging bag during use without manually tearing), usually according to American Society Testing and Materials《ASTM F2029 measures flexible material heat seal capability thermal weld code of practice by measuring sealing intensity》It is tested, sample test When dominant failure mode remove (Fig. 9) or transitional region for heat seal region and be 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 broken for transitional region, the true heat seal that test result is less than sample is strong Degree.But as long as test result, which meets, receives standard, it is reasonable temperature or optimum temperature still to assert the heat-seal 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 The heat sealing strength for not indicating its heat seal seam is best.When heat sealing strength test failure mode for heat seal region remove rather than When transitional region is broken, and during 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 preferable 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 during actual production manufacture, due to film thickness error, film out-of-flatness, heat seal work folder Have the combined influence of the factors such as error, 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 susceptible to Local residues gap, is i.e. heat seal seam Sealing integrity is not up to standard.For the product that heat seal seam is longer or heat sealing performance is poor, the sealing integrity of heat seal seam and Heat sealing strength is conflicting, to ensure that sealing integrity generally has to that using excessively heat-sealing, i.e., heat sealing strength must be sacrificed. In food packaging and medical package field, the sealing integrity of packaging is the most critical index that must satisfy, 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 Relatively low heat-seal temperature is selected under part to obtain preferable heat sealing strength, the best heat-seal temperature used is usually above theory most 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, it is disclosed, for laparoscope dedicated specimen bag described in the utility model heat seal research compared with It is few, the experience in food packaging and medical package field is usually continued to use during the specimen bag batch heat seal manufacture at present, i.e., using height Heat seal is carried out to obtain sealing integrity and preferable heat sealing strength simultaneously in theoretical optimum temperature, inevitably, the shape Into most of region of same heat seal seam belong to the standard heat seal and its regional area belongs to the excessive heat seal.With reference to Fig. 7, Fig. 8 and Figure 11, such as the specimen bag 100 is in heat seal under the conditions of best heat-seal temperature, the heat seal seam 104 it is big Subregion belongs to standard heat seal (its heat seal seam figure is referring to Fig. 8), and the regional area of heat seal seam 104 belongs to excessive heat seal (its heat seal seam figure is referring to Figure 11).With reference to figure 11, as it was noted above, the local excessive heat seal leads to the transitional region 132 parts are significantly thinning, and the intensity so as to cause part significantly reduces.

With reference to figure 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.In view of the size-constrained system of film thickness, and be subjected to during specimen bag clinical practice Very big extruding force, therefore be no upper limit for the pursuit of specimen bag intensity, intensity is the bigger the better.Simultaneously as sample Bag is commonly used in containing pathological tissues or organ, and sealing integrity is also of equal importance, and any leakage, which may all increase, suffers from The risk of person's inadvertent contamination or the workload for increasing follow-up cleaning treatment.It obtains the hot bonding method of sealing integrity and obtains best The hot bonding method of heat sealing strength is conflicting, and up to the present there are no good methods to solve this conflict, and mark The case ruptured in this bag of clinical practice still happens occasionally.

In order to be better understood from the utility model disclosed embodiment scheme, look back first herein described previously using heating Underheat when welding (heat seal) legal system makes specimen bag is closed, and standard heat seal and excessive heat seal situation and use test method(s) obtain most The method of big heat sealing strength, best heat seal seam and theoretical optimum temperature.One those skilled in the art is it is contemplated that different Material or the different thickness of similar material or same type of material same thickness but different hardness, the maximum heat obtained using experimental method Intensity is closed, the difference of best heat seal seam and theoretical optimum temperature is very big, therefore for a certain specific in the utility model The a certain concrete case of material is studied.

During using other welding manners, the main distinction is that the source of welding energy is different, and the essence of welding is identical.It adopts Manufacture specimen bag with other welding manners, the film that is welded to each other be also in the molten state, film by heat seal region The counterdiffusion of polymer segment phase, the infiltration on surface, mutually wind so that biplate (or multi-disc) film is welded together.Specimen bag Also film substrate, transitional region and welding area can finer be divided into.During film heat seal, in the effect of heat seal pressure Under, the film in molten condition in heat seal region is made to be calendered extrusion, so as to form the transitional region.The transitional region Film thickness be less than the film substrate thickness.Its solder joint also can approximately be divided into deficient welding and (be equal to underheat Close), standard welding (being equal to standard fusion) and excessive welding (being equal to excessive heat seal).One those skilled in the art can be with Understand, under different welding manners, the parameter for influencing welding quality is different, using different welding parameters, determines welding Seam belongs to deficient welding, standard welding or excessive welding.Equally, other well known welding manners, can also pass through experimental method The maximum weld strength of acquisition, best solder joint and theoretical best welding parameter.

Although those skilled in the art is to be understood that specimen bag in different materials, different structure or difference Welding manner etc. under the conditions of, the factor for influencing its solder joint quality is widely different, but can be used identical test method and Receive standard to control its seam quality, while can also experimental method be used to obtain associated control parameters.Clearly to illustrate this reality With novel thought, relevant term of specimen bag solder joint quality is defined as below at this：

Owe welding：That is the thinner thickness of film that the surface of welding region is melted, participating in fusion, weld strength test When failure mode for specimen bag welding area remove, and test result be less than desired value.

Standard welding：That is the thickness of film that the surface of welding region is melted, participating in fusion is moderate, and weld strength is surveyed Failure mode during examination is removed, and test result reaches desired value for the welding area of specimen bag.

Excessive welding：That is the thickness of film that the surface of welding region is melted, participating in fusion is too many, leads to specimen bag The thickness of transitional region between welding area and bag body transition region is significantly thinning, and failure mode when weld strength is tested is Transitional region is broken, and heat sealing strength test result is less than desired value.

Owe fusion weld：Weld strength test shows as owing the weld seam of welding.

Standard fusion weld：Weld strength tests the weld seam for showing as standard welding.

Excessive fusion weld：Weld strength tests the weld seam for showing as excessive welding.

Best weld seam：Failure mode when weld strength is tested is removed, and test result reaches for the welding area of specimen bag To the weld seam of maximum value.Theoretical best welding parameter：Obtain welding parameter during best weld seam.

As it will be easily appreciated by one skilled in the art that carry out film solder strength test according to ASTM F2029 or ASTM F88 When, it needs that sample is prepared into the band-like test specimen that width is 1in, 25mm or 15mm in advance.It is tested with long weld seam After sample is prepared to multiple band-like test specimens, test result may include and owe welding, standard welding and excessive welding, This defines such long weld seam as mixing weld seam.

Owe welding and standard welding mixing weld seam：Simultaneously comprising deficient weld and standard weld in same weld seam.

Standard welding and excessive welding mixing weld seam：Simultaneously comprising standard weld and excessive weld portion in same weld seam Point.

The structure composition and manufacturing process of the first embodiment specimen bag 200 of the utility model is illustrated in detail in Figure 12-19. As it was noted above, the hot bonding method for obtaining sealing integrity and best heat sealing strength is conflicting, that is, it is difficult to by best Heat seal parametric method controls the heat sealing quality of the specimen bag, so that its weld seam is also ensured that its weldering while both having had sealing integrity Seam is completely in standard hot conjunction state, to obtain best heat sealing strength.In the one side of the utility model, the specimen bag 200 use Unitarily blowing formed mode, avoid realizing the sealing of specimen bag 200 using heat seal welding, have evaded aforementioned conflict. It is finer, there is no weld seam on the bag body 202 of the specimen bag 200, entire bag body 202 is complete entirety, ensures bag body 202 Leakproofness and intensity it is basically identical.

With reference to figure 19, the specimen bag 200 includes the sack 201 that can be opened and collapse and extends from the sack 201 The bag body 202 of the closing formed.The sack 201 is included around the tunnel of sack 211, to accommodate spreading mechanism 20 and prick Line 50.

With reference to figure 12-19, the manufacture substantially process of specimen bag 200 is described.

S1:With reference to figure 12, the film blank 2000 of specimen bag 200 is manufactured using integral blow mold 60 first.The mould Tool 60 includes the first mold 61 and the second mold 62, and 61 and second mold 62 of the first mold forms ampuliform cavity after being closed 63, the ampuliform cavity 63 includes bottleneck 66, body 65 and bottom of bottle 64, and the whole ampuliform cavity 64 is in rugby ball shape, i.e., 65 diameter of section of body is more than bottleneck 64 and the diameter of section of bottom of bottle 64, the bottom of bottle 64 are set as the envelope of an entirety Closure.When 61 and second mold 62 of the first mold closure is blow molded by cast gate 68, construct blow-molded is in ampuliform cavity 63 insides form the ampuliform film blank 2000 of global formation.Then 61 and second mold 62 of the first mold is detached, taken Go out film blank 2000 (as shown in figure 13).The construct blow-molded includes but not limited to polyethylene, polyvinyl chloride, polypropylene, Buddhist nun Dragon, Teflon, thermo-setting elastomer (such as silica gel) and thermoplastic elastomer (TPE) (such as polyurethane).

Corresponding with ampuliform cavity 63 with reference to figure 13, the film blank 2000 includes bag green body 200a and bag base mouth 205 And the transition region 204 extended from bag base mouth 205 to bag green body 200a, the bag green body 200a include sack film 212 and bag Body 202, the bag body 202 include bag bottom film 221 and the bag body transition extended from bag bottom film 221 to sack film 212 Area 222.

S2:As illustrated in figures 14-16, by the film blank 2000 along sack film 212 and the line of demarcation of transition region 204 206 are sheared, and detach bag green body 200a and transition region 204, cutting output green body 200a.The cut mode may be used It is sheared etc. after cross cutting or precompressed cutting line.

S3:As in figs. 17-19, U-shaped opening 215 is die cut out in 212 two symmetrical sides of sack film first, and empty Intend fold line 216, sack film 212 is divided on sack film 214 under film 213 and sack by fold line 216.Along fold line 216 are folded down film on sack 213, and be overlapped with film under sack 214；Then along sack film 213 edge into Row heat seal is welded, and forms weld seam 217.On sack after weld formation under film 213 and sack film 214 formed tunnel 211 and The tunnel face 211a being bent to form by U-shaped opening 215.

Although film 214 under film 213 on the sack and sack is welded in a manner that heating is welded in this example Together, however ultrasonic bonding can also be used, high-frequency welding, radiation is welded, the modes such as pulse welding.

Compared with prior art, the bag body 202 of specimen bag 200 is using integral blow one without weld seam to the present embodiment Molding manufacture, so bag body 202 be not present due to heat seal welded bands come various risks, ensure that specimen bag leakproofness and Intensity will not be ruptured and be leaked when specimen bag 200 receives larger extruding force, improve the safety of operation.

Structure and composition the present embodiment of the second embodiment specimen bag 300 of the utility model is illustrated in detail in Figure 20-26 In other parts of 11 (not shown) of sundries tool in addition to specimen bag 300 is taken to be identical with the first embodiment, mainly for first implement A kind of preferred technical solution that specimen bag 300 proposes in example.

In the one side of the utility model, the specimen bag 300 uses blow molding mode, is blow molded out the film of tubular Blank 3000；Then aforementioned conflict is solved using overlap joint welding manner in film blank 3000.It is finer, the sample Bag 300 includes at least 2 heat seal weld seams, and the weld seam had not only ensured the sealing integrity of specimen bag, but also realized good heat sealing strength.

With reference to figure 26, the specimen bag 300 includes the sack 301 that can be opened and collapse and extends from the sack 301 The bag body 302 of the closing formed.The sack 301 is included around the tunnel of sack 311, to accommodate spreading mechanism 20 and prick Line 50.The bag body 302 is made of the film blank 3000 of tubular；The film blank 3000 is molded by being blow molded mode, institute State the bag bottom film 321 that film blank 3000 includes opening and the bag body transition for being extended by it and being connected with sack film 312 Area 322, bag bottom film 321 include sealing device 305, for ensureing the leakproofness and intensity of bag body bottom, avoid the occurrence of Leakage and rupture.

With reference to figure 20-26, the manufacture substantially process of specimen bag 300 is described.

S1:With reference to figure 20, the film blank 3000 of specimen bag 300 is manufactured using blowing device 70 first.The blowing dress It puts 70 and includes extruder 71, right-angle handpiece 72,75 (not shown) of vane 73, inner cold system 74 and draft gear.It first will blowing Material is put into the material mouth 711 of extruder 71, and construct blow-molded is formed film bubble by extruder 71, then will be straight by vane 73 Film bubble blowout in angle head 72, and film blank 3000 is formed by the traction of draft gear 75.The construct blow-molded is included but not It is limited to polyethylene, polyvinyl chloride, polypropylene, nylon, Teflon, thermo-setting elastomer (such as silica gel) and thermoplastic elastomer (TPE) (such as polyurethane).

With reference to figure 21, the film blank 3000 includes bag body transition region 300a and the sack on bag body transition region 300a tops Film 312 and the bag bottom film 321 of bag green body 300a bottom ends, this stage, bag bottom film 321 are open openings, with Bag base mouth 312 forms two openings of the film blank 3000 of tubular together.

S2:As shown in figs. 22-24, U-shaped opening 315 is die cut out in two symmetrical sides of sack film 312 first Sack film 312 is divided on sack film under film 313 and sack by (315a), and notional fold line 316, fold line 316 314.Film on sack 313 is folded down, and be overlapped with film under sack 314 along fold line 316；Then the film along sack 313 edge carries out heat seal welding, forms weld seam 304.Film 314 is formed under film 313 and sack on sack after weld formation Tunnel 311 and the tunnel face 311a being bent to form by U-shaped opening 315.

S3:As shown by figures 25-26, bag bottom film 321 is divided into bag bottom film 321a and bag bottom film 321b.Bag bottom film 321a welds to form the first weld seam 351, and the first weld seam 351 includes standard welding and excessive welding mixing weld seam.First weld seam The second weld seam 352 to form inside is welded in 351 inside edges, and second weld seam 352 is mixed comprising deficient welding and standard welding Weld seam.

A kind of preferred technical solution, illustrates a kind of specimen bag 300a, and the specimen bag 300a will be by the present embodiment The sealing that forms of weld seams that the sealing device 305 of specimen bag 300 is replaced with two overlappings by the first weld seam 351 of overlapping mode fills Put 305a.Specifically, the specimen bag 300a include the sack 301 that can open and collapse and extend from the sack 301 and Into closing bag body 302a.The sack 301 is included around the tunnel of sack 311, to accommodate spreading mechanism 20 and binding 50.The bag body 302a is made of the film blank 3000 of tubular；The film blank 3000 is molded by being blow molded mode, described The bag bottom film 321 and the bag body transition region for being extended by it and being connected with sack film 312 that film blank 3000 includes opening 322, bag bottom film 321 includes sealing device 305a, for ensureing the leakproofness and intensity of bag body bottom, avoids the occurrence of and lets out Leakage and rupture.The sealing device 305a includes the first weld seam 351a set by 321 outer edge of bag bottom film, and described first Weld seam 351a includes standard welding and excessive welding mixing weld seam.Sealing device 305a is also included and is arranged in the first weld seam 351a Second weld seam 352a, the second weld seam 352a of side, includes deficient welding and standard welding mixing weld seam.In the first weld seam 351a Vacant area 353 is set between the second weld seam 352a.

The principle of the specimen bag 300a, application method and advantage：As it was noted above, food packaging and medical package neck Domain, such as blood packaging bag, the uniform pressure (pressure) transmitted using the weld seam of its packaging bag during fracture failure by liquid, Therefore for blood packaging bag or similar products, using multiple weld seam method almost without meaning.However the clinical practice of specimen bag It is completely different with failure mode and said blood packaging.The sealing integrity of specimen bag weld seam is ensuring the disease cut down Becoming tissue or watery blood in organ or body fluid will not permeate and be leaked in patient's body lumen.With reference to figure 4-5 as it can be seen that being loaded with lesion When the specimen bag of tissue is stored and extracted, usual sack is not completely sealed；Thus those skilled in the art can be with Expect, when the specimen bag is stored and is extracted, the internal not compact power of liquid contained or the extruding force very little being subject to, otherwise Liquid is spouting by the sack not being fully sealed from specimen bag.Therefore the liquid contained in specimen bag passes through the second weld seam Pressure (pressure) very little of the first weld seam 351a is passed to after 352a.Work as in addition, those skilled in the art is to be understood that When specimen bag is stored and extracted, contain tissue and non-uniform extruding force is applied for specimen bag body, and then be transformed into specimen bag The internal force of bag body is transferred to the second weld seam 352.Since the pathological tissues are not fluids, it is impossible to across on the second weld seam 352 Power is simultaneously transferred to the first weld seam 351a by micro chink.In conclusion the outermost side weld realization sealing integrity, and inside Weld seam mainly realizes that the scheme of heat sealing strength meets specimen bag clinical practice demand well, preferably resolves sealing integrity With the conflict of best heat seal strength.

In a kind of fabrication scheme, heat seal is formed in two times by the first weld seam 351a and the second weld seam 352a；First complete The heat seal of the second weld seam 352 is completed in the heat seal of one weld seam 351a again；Or it first completes into the heat seal of the second weld seam 352a and completes again The heat seal of first weld seam 351a.In another fabrication scheme, the first weld seam 351a and the second weld seam 352a single heat seal shapes Into.In another fabrication scheme, 352a points of the first weld seam 351a and the second weld seam are using other well known welding manners point Welding is formed twice, and the method welded twice can be the same or different.

Another preferred technical solution, illustrates another specimen bag 300b, the specimen bag 300b by the present embodiment Specimen bag 300 sealing device 305 by the first weld seam 351 of overlapping mode replace with one overlapping heat seal weld seam and band The sealing device 305b of composition.Specifically, the specimen bag 300b includes the sack 301 that can open and collapse and from described Sack 301 extends the bag body 302b of closing formed.The sack 301 is included around the tunnel of sack 311, is strutted to accommodate Mechanism 20 and binding 50.The bag body 302b is made of the film blank 3000 of tubular；The film blank 3000 passes through blowing Mode is molded, the bag bottom film 321 and extended by it and be connected with sack film 312 that the film blank 3000 includes opening Bag body transition region 322, bag bottom film 321 include sealing device 305b.The sealing device 305b includes thin by bag bottom First weld seam 351a, the first weld seam 351a of 321 outer edge of film setting includes excessive fusion weld or standard welding and mistake Spend welding mixing weld seam.Sealing device 305a is also comprising the band 353 being arranged on the inside of the first weld seam 351a, the band 353 Bag bottom film 321 is tightened.In the technical program, when specimen bag 300b is by larger extruding force, mainly by band 353 and the inside of band 353 bear extruding force, due to that may there is a small amount of liquid to be permeated from band 353, so the first weld seam 351a Liquid barrier is primarily served, avoids the effect of leakage.The flexibility such as nylon or semi-rigid material system may be used in the band 353 Into.

The step S3 in the present embodiment is replaced with into S32 in preferred technical solution, specifically：

S32:The first weld seam 351a is welded out in heat seal on 321 outer edge of bag bottom film first, then in the first weldering Seam 351a insides band 353 tightens.

Another preferred technical solution, illustrates a kind of specimen bag 300c, and the specimen bag 300c is by the present embodiment The sealing device 305 of specimen bag 300 is replaced with the heat seal weld seam and fixed knot of an overlapping by the first weld seam 351 of overlapping mode The sealing device 305c of composition.Specifically, the specimen bag 300c includes the sack 301 that can open and collapse and from described Sack 301 extends the bag body 302c of closing formed.The sack 301 is included around the tunnel of sack 311, is strutted to accommodate Mechanism 20 and binding 50.The bag body 302c is made of the film blank 3000 of tubular；The film blank 3000 passes through blowing Mode is molded, the bag bottom film 321 and extended by it and be connected with sack film 312 that the film blank 3000 includes opening Bag body transition region 322, bag bottom film 321 include sealing device 305c.The sealing device 305c includes thin by bag bottom First weld seam 351a, the first weld seam 351a of 321 outer edge of film setting includes excessive fusion weld or standard welding and mistake Spend welding mixing weld seam.Sealing device 305c also comprising be arranged on the inside of the first weld seam 351a by 321 system of bag bottom film Into fixed knot 354, the fixed knot 354 tightens bag bottom film 321.In the technical program, when specimen bag 300c by During larger extruding force, extruding force is mainly born by fixed knot 354 and 354 inside close region of fixed knot, due to that may have A small amount of liquid is permeated from fixed knot 354, so the first weld seam 351a primarily serves liquid barrier, avoids the effect of leakage.

The step S3 in the present embodiment is replaced with into S33 in preferred technical solution, specifically：

S33:The first weld seam 351a is welded out in heat seal on 321 outer edge of bag bottom film first, then in the first weldering The fixed knot 354 being tied to form on the inside of seam 351a by bag bottom film 321.

Although bag bottom film 321 is overlapped welding in a manner that heating is welded in this example or overlap joint is welded on one It rises, however ultrasonic bonding can also be used, high-frequency welding, radiation is welded, the modes such as pulse welding.

Many different embodiments and example of the utility model are had shown and described.One of this field is common Technical staff, under the premise of the scope of the utility model is not departed from, by it is suitably modified the method and instrument can be made it is suitable Answering property is improved.Such as do simple adaptation or using not using the specimen bag heat seal seam disclosed in other utility models Same technique, for example, by using pressure parameter, the various combinations such as temperature parameter or dwell time.Several kinds of amendment schemes are carried It arrives, for those skilled in the art, other amendment schemes are also what is be contemplated that.Therefore the scope of the utility model should Should be according to accessory claim, while it is understood not to the structure for being shown and being recorded by specification and attached drawing, material or behavior Particular content limited.

Claims (7)

1. a kind of tubular specimen bag, comprising the sack that can be opened and collapse and from the bag body that sack extension forms, feature exists In：

The bag body is made of the film blank of tubular；The film blank is molded by being blow molded mode, the film blank packet Bag bottom film containing opening and the bag body transition region for being extended by it and being connected with sack film, bag bottom film include sealing Device for ensureing the leakproofness and intensity of bag body bottom, avoids the occurrence of leakage and rupture.

2. specimen bag as described in claim 1, it is characterised in that：The sealing device is included at least and is arranged on outside bag bottom film First weld seam at edge, first weld seam include standard welding and excessive welding mixing weld seam.

3. specimen bag as claimed in claim 2, it is characterised in that：The sealing device is also included and is arranged on the inside of the first weld seam The second weld seam, second weld seam, which includes, owes welding and standard welding mixing weld seam.

4. specimen bag as claimed in claim 2, it is characterised in that：The sealing device is also included and is arranged on the inside of the first weld seam Band loop or the fixed knot that is made of bag bottom film.

5. the specimen bag as described in claim 1-4 is any, it is characterised in that：The sack is further included around the tunnel of sack.

6. specimen bag as claimed in claim 5, it is characterised in that：Also comprising binding, the binding is threaded through the specimen bag In the tunnel, and the sack of specimen bag after tissue specimen is received, can be tightened.

7. a kind of take sundries tool for Minimally Invasive Surgery, it is characterised in that：Including specimen bag as claimed in claim 6, also wrap Handleset and the spreading mechanism for strutting specimen bag that is connect with the Handleset containing conduit tube component and through it, The specimen bag and spreading mechanism are set in the conduit tube component and can be with respect to its axial movements；Institute is made by Handleset operation Specimen bag and spreading mechanism is stated to push to preceding in conduit tube component and stretch out conduit tube component and strutted by the spreading mechanism；It is described Spreading mechanism with the conduit tube component is extracted out and is detached with the specimen bag backward, and the binding is through the conduit tube component.