CN204655759U - One-shot forming cluster catheter - Google Patents

Abstract

The utility model discloses a kind of one-shot forming cluster catheter, catheter comprises processes the interior pipe of the urethral catheterization of assembling again, sacculus sleeve pipe, drain interface and check valve respectively, and in urethral catheterization, pipe is provided with the sacculus filling pipe be communicated with sacculus waterflood path; In urethral catheterization, pipe, the assembling of sacculus sleeve pipe, drain interface, sacculus filling pipe and check valve form catheter inside subject.One deck elastomeric material is impregnated with to form the catheter skin be connected as a single entity at the outer surface of catheter inside subject, drain interface egress and check valve are imported and exported and are exposed to outside catheter skin, and the hot strength of catheter cladding material is less than the hot strength of urethral catheterization inner tube material.This catheter easily process not easily break with the sacculus of catheter in molding, Clinical practice, sacculus can reliable retraction and not easily blocking, even if blocking is also easily dredged when easy to leak, catheter are not extracted for tract.

Description

One-shot forming cluster catheter

Technical field

This utility model relates to the improvement of catheter structure, is specifically related to a kind of one-shot forming cluster catheter, belongs to technical field of medical instruments.

Background technology

At present, the most frequently used latex catheter is invented by American's Ahmedabad thirties in last century, China is imported into the nineties in last century, in the Clinical practice of over half a century, its production technology and technology almost do not have substantial changes and improvements, significant discomfort closes the requirement in modern medical service level, can not be adapted to modern industry automatization, intelligentized development trend, and the degree of accuracy of product index, standardization aspect also wait to improve.

Be embodied in:

One, product originally has significant deficiency and hidden danger in safety in utilization aspect.The case that existing production technology and detection method determine that latex catheter will inevitably occur balloon occlusion in Clinical practice, sacculus breaks, tract seepage and urethra allergy infect, and the ratio occurring these cases can be increased because of the reduction of production management level.Wherein, in balloon occlusion, the residue of the damage caused in sealing coat or interleaving agent, sacculus tract knockout course in sacculus, sacculus tract mould and coagulant thereof and enter the foreign substance of tract because of mismanagement, it is the basic reason causing sacculus and tract blocking thereof, in large-scale production, existing production Technology cannot eliminate the adverse effect of these factors completely; In sacculus breaks, sacculus is partially thin, aging, the sacculus edge of sacculus material and the bondability of body are the reasons causing sacculus to break, existing product uses latex material completely, the extensional rigidity that in the restriction of outer tube diameter and ball, tract is less, determine that sacculus thickness is limited, and realize the stable chain of latex molecule between sacculus edge and body and receive various factors, be difficult to control, occur that above situation can hardly be avoided; In tract seepage, the connected mode of knockout course to the damage of the emulsion layer of non-bone dry, check valve and sacculus water filling tract causes the reason of tract seepage, and existing technical process cannot solve; In the irritated infection of urethra, mainly caused by the calcium chloride in coagulant or lime nitrate, existing product is the thick article that one end is closed, and is difficult to ensure that the leaching effect of all products reaches requirement in large-scale production, and the case causing urethra allergy to infect is inevitable.Further, for above problem, a kind of detection method is not had can to monitor completely the technical specification of all products at present.Therefore, the mass defect of existing catheter and hidden danger cause a certain proportion of malpractice to be inevitable.

Two, the inevitable consequence that Clinical practice condition is harsh and existing production technology is backward is that malpractice takes place frequently.In clinical application, catheter needs in human urethra, place even several months a couple of days, face various complex situations, and long period of soaking is in urine, require high to the material of product, also high to the accuracy requirement of every technic index, the particularly aspect such as the hot strength of pipe, the fatigue resistance of sacculus and resilience in the water absorption of body, urethral catheterization, the material of latex catheter is selected and process obvious backwardness.

Three, latex catheter complex manufacturing, operation are various, based on manual operations, cause high expensive, difficult quality control.Latex catheter is from raw and auxiliary material to shaped article, front and back will experience 30 multiple working procedures, and most operation needs manual operations to be also difficult to realize quantitative management, and the process control in quality system is difficult to carry out, performance indications and product quality manual control, must cause difficult quality control.Because most operation needs manual operations, in recent years along with the rise of cost of human resources, production cost is obviously higher.

The nineties in last century, start to occur silicone catheter, be characterized in using silica gel material, physiological inertia is obviously better than latex catheter, in ball, tract extrusion process is produced, but product is not one-shot forming, sacculus adopts the mode of heat seal or adhesion to be connected with body, and drain interface and check valve interface are also dock with body in the mode of heat seal or adhesion, and effect is unstable, cost is higher, sacculus hot strength is low, owing to not having outer layer covers, easily occurs open defect, quality stability is poor, is difficult to form main product.

All catheters known at present, all remedial measure is not had after the blocking of sacculus tract, and due to the harshness of catheter Clinical practice condition and the trickle of logical sacculus tract, there is may existing all the time of blocking, and, in Clinical practice, during water filling, the pressure of hand push formation water is far longer than sacculus when discharging water and reclaims the pressure (particularly the recovery power of silicone catheter sacculus is very little) that power forms water, causes catheter to make because water in sacculus can not put the malpractice that catheter cannot take out from urethra.Certainly, use syringe from the mode of catheter extracardiac pumping and inadvisable, close tract because it may form negative pressure in tract.

All catheters known at present, the mode that its check valve is connected with body all easily makes tract form flex point and affect the intrinsic flow of tract, and its junction point easily forms seepage.Owing to being later stage assembling, product is not one-shot forming, and cost is higher, easily enters impurity in tract, the more difficult control of quality, needs to improve.

In the patent announced, also have and propose to adopt composite to make catheter, as number of patent application to be CN201410693290 " a kind of saccule urinary catheter and preparation method thereof " and number of patent application be 201410398261.3 " a kind of novel sacculus catheter ".But its mode thermosets and thermoplastic be bonded together by medium proposed is also inadvisable, as everyone knows, whether this bonding can firm inherently technical barrier, and this being bonded in 3 year effect duration has much impacts to still need textual criticism on product material.Further, sacculus sleeve pipe is separated the risk come off still to be existed with cladding material, still cannot remedy after balloon occlusion, and product can not one-shot forming, and the easy produced problem majority of catheter still exists, and cost is still higher.

Utility model content

For prior art above shortcomings, the purpose of this utility model is to provide that the sacculus of catheter in a kind of easy processing and molding, Clinical practice not easily breaks, sacculus can reliable retraction and not easily blocking when easy to leak, catheter are not extracted for tract, even if the one-shot forming cluster catheter of blocking also easily dredging.

To achieve these goals, the technical solution adopted in the utility model is as follows:

One-shot forming cluster catheter, comprise pipe in the urethral catheterization with urethral catheterization drainage channel and sacculus waterflood path of processing respectively and assembling again, for the formation of sacculus sacculus sleeve pipe, for the drain interface that is connected with drainage bag with for the check valve to water filling in sacculus, in urethral catheterization, pipe is provided with the sacculus filling pipe be communicated with sacculus waterflood path; In described urethral catheterization, pipe, the assembling of sacculus sleeve pipe, drain interface, sacculus filling pipe and check valve form catheter inside subject; One deck elastomeric material is impregnated with to form the catheter skin be connected as a single entity at the outer surface of catheter inside subject, drain interface egress and check valve are imported and exported and are exposed to outside catheter skin, and the hot strength of catheter cladding material is less than the hot strength of urethral catheterization inner tube material; In urethral catheterization, be provided with through drain entrance on the tube wall of pipe front end and on catheter skin, drain entrance communicates with urethral catheterization passage.

During concrete assembling, described drain interface front end is connected with pipe afterbody in urethral catheterization, and in urethral catheterization, pipe afterbody extends to form described sacculus filling pipe, and sacculus filling pipe end is connected with check valve; Sacculus casing pipe sleeve is contained in pipe leading portion in urethral catheterization.

Preferably, described sacculus sleeve pipe two ends are fixedly connected with by binding I with pipe in urethral catheterization and close, and binding I is positioned at catheter skin.

Similarly, described drain interface front end is sleeved on pipe afterbody in urethral catheterization and by binding II, suit position is fixedly connected with and is closed, and binding II is positioned at catheter skin.

Preferably, the outlet of check valve draws in and forms check valve interface, check valve interface end cross section is consistent with sacculus filling pipe end cross-sectional, and check valve interface end is docked with sacculus filling pipe end, and described catheter skin closes this docking site outer surface of parcel.

Further, sacculus waterflood path in described urethral catheterization on pipe is positioned opposite two, article two, sacculus waterflood path communicates with sacculus internal surface of sleeve pipe respectively by the interconnection on urethral catheterization inner tubal wall, article two, sacculus waterflood path to extend out formation two sacculus filling pipe from pipe afterbody in urethral catheterization respectively, and two sacculus filling pipe ends pass from drain interface sidewall and are connected with check valve respectively.

Connecting portion and the drain interface of two sacculus filling pipes and check valve are connected by common fixing stiffening device with the connecting portion of pipe in urethral catheterization, fixing stiffening device to be wrapped on catheter skin to be wrapped up by above-mentioned connecting portion and to be fastened in catheter skin, comes off to prevent connecting portion.Described fixing stiffening device is fastened by relative two housing sections and is formed, two housing sections fastens and forms two or three fixing bayonet sockets, one of them bayonet socket is used for pipe afterbody connecting portion in fixing drain interface and urethral catheterization, another or two bayonet sockets are arranged on the side of previous bayonet socket, for fixing check valve, be provided with annular projection on check-valve body surface and form retainer ring, the corresponding retainer ring position of the bayonet socket that two housing sections is formed is provided with draw-in groove, draw-in groove surrounds and blocks corresponding check valve retainer ring, check valve head stretches out in fixing stiffening device through corresponding bayonet socket.

Described drain interface is made up of the leading portion sleeve pipe be connected as a single entity, taper position, middle part and three sections, rear interface position, taper position, middle part taper end size is consistent with leading portion sleeve pipe, middle part taper position butt end size and rear interface positions are conformed to each other, leading portion casing pipe sleeve is contained in pipe afterbody in urethral catheterization, rear interface position is stretched out in fixing stiffening device, for connecting drainage bag.

Described fixing stiffening device is peach-shaped or heart, its smooth surface.

Pipe is provided with the injection parallel with center urethral catheterization drainage channel in urethral catheterization and rinses tract and thermometric tract, injection flushing tract and thermometric tract extend out from pipe afterbody in urethral catheterization and form injection flushing pipe and thermometric pipeline, injection flushing pipe and thermometric pipeline end sleeve are equipped with corresponding sleeve pipe, and sleeve pipe is by binding and injection flushing pipe and thermometric pipeline end winding support.

Compared to existing technology, this utility model has following beneficial effect:

1, catheter skin uses the principle that natural emulsion or synthetic latex elastomeric material are filled a vacancy in dipping process of setting, makes Total Product smooth, good airproof performance, strengthens the reliability of each connecting portion of product, binding position flat smooth after dipping; Catheter skin has used the principle of natural emulsion or synthetic latex elastomeric material natural shrinking in dry run simultaneously, carry out nature to all binding positions and connecting portion effectively wrap up and seal, catheter agent structure is made all to be connected to form overall also one-shot forming, both the operation in early stage that catheter is produced had been simplified, the operations such as the drying in later stage, leaching, surface treatment are enable again to carry out continuously, and decrease the operation that the later stage assembles check valve separately, optimize the production technology of whole catheter, greatly reduce the production cost of catheter.

2, sacculus sleeve pipe is fixedly connected with pipe in urethral catheterization by binding, makes to form an entirety in sacculus, fundamentally solves that tradition is bonding by felting agent, in sacculus, spacer came off and closes or the hidden danger of blocking balloon lumen aperture after bonding agent loses efficacy.Simultaneously being combined of sacculus sleeve pipe and binding; use the principle of seal with elastometic washer; sacculus edge and pipe in urethral catheterization is made firmly to be connected by direct and the easiest mode and to seal; not only simplify the production technology of catheter; in large-scale production, make the quality control of catheter sacculus reliability become more secure; also be conducive to, to the multiple choices of the outer material of catheter, both reducing cost, and having had again the better quality assurance simultaneously.

3, this utility model devises two waterflood path, the risk that in the impurity of trickle in tract when fundamentally solving Clinical practice, water-swellable or tract, trickle damage causes tract to block, the method adopted is: when finding that in sacculus, water can not flow out from check valve, the second waterflood path draining can be used, also can be discharged to water filling in the first waterflood path by the second waterflood path, form backflow to rinse tract, reach the object of dredging tract.

4, this utility model adopts fixing stiffening device both to solve safe handling and the strong bonded problem at the interface position of catheter complexity, makes again the external shape of catheter become simple, reduces packaging storing cost, the clean hygiene when Clinical practice.

5, filling pipe is directly connected with check valve, avoid and form flex point on this junction point, and decrease and once connect, simplify connected mode, fundamentally ensure that catheter tract does not block non-leakage and maintains normal discharge on this junction point, is conducive to the reduction of catheter production cost and the simplification of technique simultaneously; Another side, namely the phase is assembled on catheter check valve before manufacture, avoids impurity in production process and enters sacculus water filling tract and result in blockage, solve most hidden danger that existing product causes balloon occlusion.

In a word, this utility model thoroughly solves catheter can not discharge water problem in sacculus because product structure, production technology and foreign substance cause tract to block, improve the ability of sacculus resistance to fracture, efficiently solve the problem of logical sacculus tract seepage, efficiently solve the problem that catheter easily causes urethra allergy to infect, simplify the production technology of catheter simultaneously, reduce the production storing cost of catheter.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, this utility model is further illustrated.

Fig. 1 is pipe vertical section structural map in urethral catheterization.

Fig. 2 is pipe cross-sectional configuration figure in urethral catheterization.

Fig. 3 is foley's tube outline drawing.

Fig. 4 is binding outline drawing.

Fig. 5 is drain interface vertical section structural map.

Fig. 6 is check valve shape assumption diagram.

Fig. 7 is this utility model overall vertical section structural map.

Fig. 8 is fixing stiffening device internal structure structural map.

Fig. 9 is the catheter outline drawing that sacculus is heaved.

In figure: 1, pipe in urethral catheterization; 2, sacculus sleeve pipe; 3, binding; 4, drain interface; 5, check valve; 6, catheter is outer; 7, fixing stiffening device; 11, the first sacculus waterflood path; 12, the second sacculus waterflood path; 13, the first sacculus filling pipe; 14, the second sacculus filling pipe; 15, urethral catheterization drainage channel; 41, leading portion sleeve pipe; 42, middle part taper position; 43, rear interface position; 51, check valve interface; 52, one-way valve water inlet; 53, check valve retainer ring; 71, pipe clamp groove in urethral catheterization; 72, check valve draw-in groove; 73, urethral catheterization inner tube outlet; 74, drain interface egress; 75, one-way valved outlet.

Detailed description of the invention

See Fig. 1-Fig. 9, upper as can be seen from figure, the catheter of this utility model band strap-on structure, comprise pipe in the urethral catheterization with urethral catheterization drainage channel and sacculus waterflood path of processing respectively and assembling again, for the formation of the sacculus sleeve pipe of sacculus, for the drain interface that is connected with drainage bag with for the check valve to water filling in sacculus, in urethral catheterization, pipe is provided with the sacculus filling pipe be communicated with sacculus waterflood path, it is characterized in that: in described urethral catheterization, pipe, the assembling of sacculus sleeve pipe, drain interface, sacculus filling pipe and check valve form catheter inside subject; One deck elastomeric material is impregnated with to form the catheter skin be connected as a single entity at the outer surface of catheter inside subject, drain interface egress and check valve are imported and exported and are exposed to outside catheter skin, and the hot strength of catheter cladding material is less than the hot strength of urethral catheterization inner tube material; In urethral catheterization, be provided with through drain entrance on the tube wall of pipe front end and on catheter skin, drain entrance communicates with urethral catheterization passage.

During connection, described drain interface front end is connected with pipe afterbody in urethral catheterization, and in urethral catheterization, pipe afterbody extends to form described sacculus filling pipe, and sacculus filling pipe end is connected with check valve; Sacculus casing pipe sleeve is contained in pipe leading portion in urethral catheterization.

Described sacculus sleeve pipe two ends are fixedly connected with by binding I with pipe in urethral catheterization and close; Similarly, drain interface front end is sleeved on pipe afterbody in urethral catheterization and by binding II, suit position is fixedly connected with and is closed, and binding I and binding II are positioned at catheter skin.

Be connected with filling pipe for convenience of check valve, avoid the formation of flex point, the outlet of this utility model check valve draws in and forms check valve interface, check valve interface end cross section is consistent with sacculus filling pipe end cross-sectional, check valve interface end is docked with bonding way with sacculus filling pipe end, and described catheter skin closes this docking site outer surface of parcel.

For avoiding the dredging after blocking and blocking, sacculus waterflood path in this utility model urethral catheterization on pipe is positioned opposite two, article two, sacculus waterflood path communicates with sacculus internal surface of sleeve pipe respectively by the interconnection on urethral catheterization inner tubal wall, article two, sacculus waterflood path to extend out formation two sacculus filling pipe from pipe afterbody in urethral catheterization respectively, and two sacculus filling pipe ends pass from drain interface sidewall and are connected with check valve respectively.

In order to ensure the bonding strength of each connecting portion, this utility model is connected by common fixing stiffening device with the connecting portion of pipe in urethral catheterization at the connecting portion of two sacculus filling pipes and check valve and drain interface, fixing stiffening device is wrapped in be wrapped up by above-mentioned connecting portion and to be fastened in catheter skin on catheter skin, is namely come off to prevent connecting portion by outside mechanical connecting structure of setting up.

Described fixing stiffening device is fastened by relative two housing sections and is formed particularly, two housing sections fastens and forms two or three fixing bayonet sockets, one of them bayonet socket is used for pipe afterbody connecting portion in fixing drain interface and urethral catheterization, another or two bayonet sockets are arranged on the side of previous bayonet socket, for fixing check valve, be provided with annular projection on check-valve body surface and form retainer ring, the corresponding retainer ring position of the bayonet socket that two housing sections is formed is provided with draw-in groove, draw-in groove surrounds and blocks corresponding check valve retainer ring, check valve head stretches out in fixing stiffening device through corresponding bayonet socket.

Described fixing stiffening device is peach-shaped or heart, its smooth surface.

For convenience of connecting, described drain interface is made up of the leading portion sleeve pipe be connected as a single entity, taper position, middle part and three sections, rear interface position, taper position, middle part taper end size is consistent with leading portion sleeve pipe, middle part taper position butt end size and rear interface positions are conformed to each other, leading portion casing pipe sleeve is contained in pipe afterbody in urethral catheterization, rear interface position is stretched out in fixing stiffening device, for connecting drainage bag.

Further, pipe can be provided with the injection parallel with center urethral catheterization drainage channel in urethral catheterization and rinse tract and thermometric tract, injection flushing tract and thermometric tract extend out from pipe afterbody in urethral catheterization and form injection flushing pipe and thermometric pipeline, injection flushing pipe and thermometric pipeline end sleeve are equipped with corresponding sleeve pipe, and sleeve pipe is by binding and injection flushing pipe and thermometric pipeline end winding support.

Being described above composition and the annexation of this utility model catheter, in order to understand this utility model better, with the form of embodiment, each parts and assembling sequence thereof being described in detail below.

Embodiment one

Step one: as shown in figs 1 to 6, makes catheter main metal fixture.Comprise pipe 1 in urethral catheterization, sacculus sleeve pipe 2, binding 3, drain interface 4, check valve 5.

In urethral catheterization, pipe 1 adopts extrusion process, use the common plastics material that extensional rigidity is better, bending strength is lower, the actual medical pipeline plastic material extrusion molding commonly used that uses forms, external diameter is determined according to catheter specifications and models, pipe thickness is 0.3-4mm, length is 200-400 mm, inside establish the passage of more than two or two, at least comprise urethral catheterization drainage channel 15 and a first sacculus waterflood path 11, also can comprise the second sacculus waterflood path 12, injection irrigation channel, thermometric passage etc.; Described urethral catheterization drainage channel 15, internal diameter is determined the requirement of flow according to catheter different size model; Described sacculus waterflood path, internal diameter is 0.5-1 mm; The use of the second sacculus waterflood path 12 and the second sacculus filling pipe 14 thereof, the risk that in the impurity of trickle in tract when fundamentally solving Clinical practice, water-swellable or tract, trickle damage causes tract to block, the method adopted is: when finding that in sacculus, water can not flow out from check valve 5, the second sacculus waterflood path 12 draining can be used, also can be discharged to water filling in the first sacculus waterflood path 11 by the second sacculus waterflood path 12, form backflow to rinse tract, reach the object of dredging tract.Pipe 1 in described urethral catheterization, the catheter lumens made relative to natural emulsion has obviously superior extensional rigidity and moment of torsion, and its flexural strength then relatively.

As shown in Figure 1, after formed pipe is made, need cut its one end, form two sacculus filling pipes 13,14.

Sacculus sleeve pipe 2 adopts impregnation technology, and use the good natural emulsion material of elasticity, sacculus sleeve pipe 2 internal-and external diameter is determined according to catheter specifications and models, and thickness in monolayer is 0.1-1mm, and length is depending on sacculus capacity.The use of described sacculus sleeve pipe 2, makes the hot strength of catheter sacculus significantly improve, and makes the ability of sacculus resistance to fracture have guarantee in material.

Described drain interface 4, is adopted the larger elastomeric material of tensile strength to be made by impregnation technology, comprises natural emulsion, synthetic latex, silica gel, plastics.Interface internal diameter is 3-8 mm, wall thickness 2-4mm, length 50-70mm, a pyramidal structure is had to body transition from interface, the sleeve pipe of one section of 10-30mm is established in pyramidal structure front end, and in the internal diameter of sleeve pipe and urethral catheterization, the external diameter of pipe 1 matches, for the connection with pipe in urethral catheterization 1; Therefore drain interface 4 comprises leading portion sleeve pipe 41, taper position, middle part 42 and 43 3 sections, rear interface position, and rear interface position 43 is for connecting drainage bag.The use of described drain interface 4, makes the connection of catheter and drainage pack adapter become easily and firmly, is obviously better than the simple connected mode adopting the pleural drainage interface of silica gel and plastic material at present.

The material that binding 3 uses tensile strength larger, comprises fiber, plastics, metal; Binding 3 can be eiloid, also can be sleeve-shaped, can directly bundle, also can be bundled by heat-shrinkage material, being used in the two ends of sacculus sleeve pipe 2 and drain interface 4 and the connecting portion of pipe 1 in urethral catheterization, for ensureing the firm of binding site, the mode repeatedly bundled can being selected.The pulling force that circle body can bear 5-10N does not rupture.

Check valve 5 inserts injection tube can inject water, and the existing accessory that after extracting injection tube, enclose inside water does not flow out, increases the interface that one or two is connected with tract extension on this basis.Employing hard plastic injection molding forms, and inside has stainless steel spring, and tail end outlet shrinks and forms check valve interface 51, and middle housing has one form check valve retainer ring 53 for fixing annular projection, front end is one-way valve water inlet 52.

Step 2: as shown in Figure 7, the catheter main metal fixture shown in installation diagram 1-Fig. 6.First mode pipe 1 one end in the urethral catheterization of one section of 200-400mm being inserted plug is closed, and near blind end 10-60mm place, opens one or more aperture (interconnection) respectively, these two tracts are communicated with outside at two sacculus waterflood paths 11,12.Be enclosed within by sacculus sleeve pipe 2 in urethral catheterization and also wrap up all apertures completely outside pipe 1, sacculus sleeve pipe 2 two ends binding 3 bundlees tightly.The leading portion sleeve pipe 41 of drain interface 4 is enclosed within pipe 1 in urethral catheterization do not close one end (afterbody) and use binding 3 to bundle tightly, and make two sacculus filling pipes 13,14 reach outside body through the glue-line of drain interface 4, because drain interface 4 is elastomeric materials, perforated edge natural enclosing.The end of two sacculus filling pipes and check valve interface 51 are directly connected in the mode bonded and close, and when two sacculus filling pipes access a check valve 5, can use three way cock.Form catheter inside subject after above-mentioned assembling parts, catheter inside subject, except drain interface and check valve water filling port, has been all totally enclosed, and when making the later stage flood outer, latex solution can not enter catheter inside.

Step 3: as shown in Figure 7, floods catheter skin 6 outward in catheter inside subject.First a linear material mould is inserted catheter urethral catheterization drainage channel 15 from drain seam, drain interface 4 and check valve 5 are fixed, catheter main body is made to have certain also fixed position, secondly catheter is soaked in coagulant, be flood 1-30min in the latex solution of 30-50% in gel content after suitable drying, the position of latex solution dipping should exceed the position of total interface and close mouth, total interface and close mouth are all also closed by catheter outer layer covers, again through leaching, drying, post-processed, mold removal, catheter main body and molding.Outer 6 thickness of catheter are 0.1-1.5 mm, because thickness is less, belong to thin-gage goods, and later stage leaching, drying are easily; Silicon materials, anti-biotic material or superslide material can be added in described catheter skin 6 but sacculus safety is unaffected, great convenience is provided to the serviceability optimizing catheter.

The use of catheter skin 6, the principle using natural emulsion or synthetic latex elastomeric material to fill a vacancy in dipping process of setting, makes binding position flat smooth after dipping, the use of described catheter skin 6, use the principle of natural emulsion or synthetic latex elastomeric material natural shrinking in dry run, carry out nature to all binding positions and connecting portion effectively wrap up and seal, catheter agent structure is made all to be connected to form overall also one-shot forming, both the operation in early stage that catheter is produced had been simplified, make again the drying in later stage, leaching, the operations such as surface treatment can be produced continuously, and decrease the operation that the later stage assembles check valve separately, optimize the production technology of whole catheter, greatly reduce the production cost of catheter.

Step 4: as shown in Figure 8, is assembled to fixing stiffening device 7 in catheter main body according to marked position.Fixing stiffening device 7 is surrounded by protecgulum and bonnet two parts and forms, be combined and form draw-in groove and outlet (bayonet socket), wherein, in catheter urethral catheterization, pipe stretches out from the urethral catheterization inner tube outlet 73 of fixing stiffening device 7, drain interface 4 stretches out from drain interface egress 74, and check valve 5 stretches out from one-way valved outlet 75.In urethral catheterization on fixing stiffening device, pipe clamp groove 71 wraps up the connecting portion of pipe and drain interface 4 in urethral catheterization, make pipe in urethral catheterization fixing, check valve draw-in groove 72 wraps up check valve 5, and check valve retainer ring 53 embeds in the gap between check valve draw-in groove 72 and one-way valved outlet 75, and check valve 5 is fixedly secured.Available screw fastening between protecgulum and bonnet, makes fixing stiffening device firm and solid.Fixing stiffening device 7 contour structures is a smooth entirety.Fixing stiffening device 7 adopts common plastics or metal injection moldedly to form, and can provide the rigging position of the accessories such as such as antipriming.

The use of fixing stiffening device 7, both safe handling and the strong bonded problem at the interface position of catheter complexity had been solved, the external shape of catheter is made again to become simple, reduce packaging storing cost, the clean hygiene when Clinical practice, the appearance design that also can be catheter offers an opportunity, can effectively improving product image.

Step 5: as shown in Figure 9, at catheter near blind end 3-20mm place (but being no more than sacculus marginal position) to the drain entrance going out two circle hole shape cost product, drain pass-through entry catheter skin and urethral catheterization inner tubal wall, make drain entrance communicate with the urethral catheterization passage in pipe in urethral catheterization.

Embodiment two

Supplementing as embodiment one, as two sacculus need be used, can in urethral catheterization in pipe 1, set up tract and the tract extension of another sacculus, and set up a check valve, use binding 3 to bundle sacculus sleeve pipe 2, check valve is directly connected with sacculus filling pipe, identical with single saccule technique.

Embodiment three

Supplementing as embodiment one, tract or thermometric tract is rinsed as injection need be set up, can in urethral catheterization in pipe 1, internal diameter on request sets up one or two tract, tract end still adopts the mode of extension, connect injection and rinse tract or the interface needed for thermometric tract, fixing stiffening device 7 is set up and is exported accordingly.

Embodiment four

In above-described embodiment one, the sacculus filling pipe 14 of second sacculus waterflood path 12 and correspondence, also can not access in check valve 5, and closes as tract for subsequent use separately.

Embodiment five

In above-described embodiment one, two sacculus filling pipes 13,14 are changed into and uses in addition connection tube to connect, although many junction points, add the risk of seepage, but still catheter can be made normally to use, also can as embodiment of the present utility model.

Above-described embodiment of the present utility model is only for this utility model example is described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all embodiments.Every belong to the technical solution of the utility model the apparent change of amplifying out or variation be still in the row of protection domain of the present utility model.

Claims (8)

1. one-shot forming cluster catheter, comprise pipe in the urethral catheterization with urethral catheterization drainage channel and sacculus waterflood path of processing respectively and assembling again, for the formation of the sacculus sleeve pipe of sacculus, for the drain interface that is connected with drainage bag with for the check valve to water filling in sacculus, in urethral catheterization, pipe is provided with the sacculus filling pipe be communicated with sacculus waterflood path, it is characterized in that: in described urethral catheterization, pipe, the assembling of sacculus sleeve pipe, drain interface, sacculus filling pipe and check valve form catheter inside subject; One deck elastomeric material is impregnated with to form the catheter skin be connected as a single entity at the outer surface of catheter inside subject, drain interface egress and check valve are imported and exported and are exposed to outside catheter skin, and the hot strength of catheter cladding material is less than the hot strength of urethral catheterization inner tube material; In urethral catheterization, be provided with through drain entrance on the tube wall of pipe front end and on catheter skin, drain entrance communicates with urethral catheterization passage.

2. one-shot forming cluster catheter according to claim 1, it is characterized in that: described drain interface front end is connected with pipe afterbody in urethral catheterization, in urethral catheterization, pipe afterbody extends to form described sacculus filling pipe, and sacculus filling pipe end is connected with check valve; Sacculus casing pipe sleeve is contained in pipe leading portion in urethral catheterization.

3. one-shot forming cluster catheter according to claim 2, is characterized in that: described sacculus sleeve pipe two ends are fixedly connected with by binding I with pipe in urethral catheterization and close, and binding I is positioned at catheter skin.

4. one-shot forming cluster catheter according to claim 2, is characterized in that: described drain interface front end is sleeved on pipe afterbody in urethral catheterization and by binding II, suit position is fixedly connected with and is closed, and binding II is positioned at catheter skin.

5. one-shot forming cluster catheter according to claim 1 and 2, it is characterized in that: the outlet of check valve draws in and forms check valve interface, check valve interface end cross section is consistent with sacculus filling pipe end cross-sectional, check valve interface end is docked with sacculus filling pipe end, and described catheter skin closes this docking site outer surface of parcel.

6. one-shot forming cluster catheter according to claim 1 and 2, it is characterized in that: the sacculus waterflood path in described urethral catheterization on pipe is positioned opposite two, article two, sacculus waterflood path communicates with sacculus internal surface of sleeve pipe respectively by the interconnection on urethral catheterization inner tubal wall, article two, sacculus waterflood path to extend out formation two sacculus filling pipe from pipe afterbody in urethral catheterization respectively, and two sacculus filling pipe ends pass from drain interface sidewall and are connected with check valve respectively.

7. one-shot forming cluster catheter according to claim 6, it is characterized in that: connecting portion and the drain interface of two sacculus filling pipes and check valve are connected by common fixing stiffening device with the connecting portion of pipe in urethral catheterization, fixing stiffening device to be wrapped on catheter skin to be wrapped up by above-mentioned connecting portion and to be fastened in catheter skin, comes off to prevent connecting portion.

8. one-shot forming cluster catheter according to claim 7, it is characterized in that: described fixing stiffening device is fastened by relative two housing sections and formed, two housing sections fastens and forms two or three fixing bayonet sockets, one of them bayonet socket is used for pipe afterbody connecting portion in fixing drain interface and urethral catheterization, another or two bayonet sockets are arranged on the side of previous bayonet socket, for fixing check valve, be provided with annular projection on check-valve body surface and form retainer ring, the corresponding retainer ring position of the bayonet socket that two housing sections is formed is provided with draw-in groove, draw-in groove surrounds and blocks corresponding check valve retainer ring, check valve head stretches out in fixing stiffening device through corresponding bayonet socket.