CN105056372B - Drainage tube - Google Patents

Abstract

The invention discloses a kind of drainage tube, a kind of drainage tube, including：Main pipe；Ball valve；Manifold；Air bag, it is attached to the front outsides in pipe portion；Air inlet pipe, the air bag is connected to, for supplying；And guiding pin, for the staight needle with multi-segment structure, containing the needle point positioned at the anterior taper of the guiding pin, preceding needle body and composition on rear side of needle point guide the rear needle body of pin postmedian；Formed with collar corresponding with the shoulder between wherein preceding needle body and rear needle body, the leading flank of collar is resisted against the trailing flank of shoulder, and syringe needle is leant out guide cone just.According to the present invention to reduce the damage to patient, and it is very easy to use.

Description

Drainage tube

Technical field

The present invention relates to a kind of drainage tube, the specifically drainage tube equipped with guiding pin.

Background technology

Clinically used surgical drainage tube species is various, such as the catheter that structure is extremely simple, and it is substantially It is a pipe.Comparatively, in the clinical practice such as wound, thoracic cavity, biliary tract, used drainage tubular construction will It is more complicated, to meet to puncture, fix, or even put the clinical needs of medicine.It is referred to as commonly generally, for such as catheter Drainage tube, and for the drainage tube with certain specific structure, applied respectively according to it and be referred to as such as lacrimal passage drainage tubes, thoracic cavity Drainage tube, peritoneal cavity drainage tube etc..

As shown in figure 1, being a kind of known drainage tube equipped with guiding pin 2, such drainage tube generally has a drainage Pipe body, abbreviation body 1, part body is only shown in figure.Some side openings 11 are generally provided with the drainage end of the body 1, then The mouth of pipe 12 at drainage end is connected with a guiding pin 2.Drainage of its application for example in outer section performs the operation, first with guiding pin 2 The drain site for entering such as operative incision is punctured from side, is passed from the opposite side of operative incision, then by the drainage of body 1 End is pulled into drain site, is imported drain using the side opening 11, is then discharged from body 1.To be advantageous to consolidating for body 1 Fixed, guiding pin 2 is maintained at relevant position after otch is passed, and guiding pin 2, which generally requires, is designed to fish hook shape（Without anti-hook）, utilize The crooked position of its own is fixed.

As depicted in figs. 1 and 2, in foregoing structure, the mouth of pipe 12 is generally enclosed on by the connection of guiding pin 2 and body 1 The tail end of pin 2, such as the connector 21 shown in Fig. 1 are guided, force closure is formed using frictional force.Due to the meeting in puncture process Bigger resistance is produced, the attachment structure based on force closure easily produces body 1 and come off from the guiding tail end of pin 2, causes to guide Failure.

In some implementations, such as shown in the middle part of Fig. 1, connector 21 is provided with some bulge loops 24, so as to based on body 1 Self-deformation produces the compound connection structure of force closure and type lock sum, so that the connection of connector 21 and the mouth of pipe 12 more may be used Lean on.But the outer surface of the mouth of pipe 12 of deformation has some flex points, puncture force is further increased, and bad shadow is produced to tissue Ring, set position is especially reached in the mouth of pipe 12, during so as to be fixed, the growth to tissue has a negative impact.

In addition, being fixed with pin, because guiding pin needs to pass from one end of such as operative incision, expose sharp keen needle point, Easily produce accidental injury.

In some applications, guiding pin 2 also acts as the effect of drainage needle, that is, it is cast pin to guide pin 2, as shown in figure 3, figure The needle point 23 of middle guiding pin 2 is formed by chamferring pipe part, and has sharp keen edge, thus in puncture, easily generation group The dissection at the edge of the additional injury knitted, especially needle point, or even some tissues can be cut away, and block guiding pin 2.

Although in further improved structure, guiding pin 2 will not produce group using conical head as illustrated in fig. 1 and 2 The additional injury knitted, but in order to play drainage, side opening or axial hole are needed out on the needle point 23 of taper for drawing Stream, structure are relatively complicated.

The content of the invention

Therefore, it is an object of the invention to provide it is a kind of have guiding pin drainage tube, to reduce the damage to patient, It is and very easy to use.

The present invention uses following technical scheme：

A kind of drainage tube, including：

Main pipe, for the straight tube with multi-segment structure, containing positioned at the anterior guide cone of main pipe and in main pipe The pipe portion at rear portion；Wherein, the inner tube of guide cone and pipe portion form the combination of cylindrical structure by the part inner tube of guide cone side Inner tube, and the inner tube in remaining pipe portion forms internal diameter and is more than the base inner tube for combining inner tube diameter, so as in the base inner tube and knot The junction for closing inner tube forms shoulder；

Ball valve, the rear portion of main pipe is arranged on, for ending or opening main pipe；

Manifold, it is connected in the middle part of main pipe, for draining；

Air bag, it is attached to the front outsides in pipe portion；

Air inlet pipe, the air bag is connected to, for supplying；And

Pin is guided, for the staight needle with multi-segment structure, contains the needle point positioned at the anterior taper of the guiding pin, needle point rear side Preceding needle body and form guiding pin postmedian rear needle body；

Between wherein preceding needle body and rear needle body platform is resisted against formed with collar corresponding with the shoulder, the leading flank of collar The trailing flank of shoulder, and syringe needle is leant out guide cone just.

In a preferred embodiment, above-mentioned drainage tube, the taper of the guide cone are identical with the taper of syringe needle.

In certain embodiments, the length of the preceding needle body is identical with the length for combining inner tube, and in preceding needle body and combination Matching somebody with somebody between pipe is combined into interference fit.

Preferably, the external diameter of the preceding needle body is identical with the external diameter of rear needle body.

In certain embodiments, the distance of shoulder to guide cone tail end is 2mm ~ 5mm.

In certain embodiments, the air bag is looped around main pipe surface by capsule skin, and both ends sealing-in forms.

In certain embodiments, the air inlet pipe connects inside main pipe through the side wall of main pipe with the air bag It is logical, and air inlet pipe is connected from main pipe and passed in the range of 2cm before and after the position of manifold.

In certain embodiments, the air inlet pipe is flexible pipe, and is furnished with pipe clamp.

In certain embodiments, the draw ratio of guide cone is 5:1, the wherein footpath in draw ratio is the internal diameter of guide cone.

In certain embodiments, the front portion in pipe portion is provided with side opening.

According to the present invention, change the guidance mode of current guiding pin, in other words, current guiding mainly pulls guiding, And then employ after puncturing hold guiding in the present invention, such as shoulder and collar are bonded to hold main pipe being directed into and treated Drain site.Wherein, guide cone and the location matches of needle point, the good structure without sharp keen combination edge is formed, will not be right Tissue produces damage, and it is readily apparent that on this condition, guiding resistance also can be smaller.Guiding terminate after, guiding pin to After extract, close ball valve, drain from manifold discharge, guiding pin do not form remaining needle, so as to reduce the painful and right of patient The damage of tissue.In addition, opening to form positioning using sacculus, when needing to take out drainage tube, the gas of sacculus is discharged, is made With very convenient.

Brief description of the drawings

Fig. 1 is a kind of known drainage tube structural representation equipped with guiding pin.

Fig. 2 is a kind of structural representation of known guiding pin with drainage needle function.

Fig. 3 is a kind of structural representation for guiding pin.

Fig. 4 is a kind of main pipe's structural representation of the drainage tube according to the present invention（Omit manifold）.

Fig. 5 is a kind of cross section structure diagram of drainage tube main pipe.

Fig. 6 is that a kind of drainage tube is responsible for structural representation（Band manifold）.

Fig. 7 is that a kind of drainage tube is responsible for structural representation（Band manifold and air inlet pipe, omit sacculus）.

Fig. 8 is the section of structure corresponding to Fig. 7.

Fig. 9 is a kind of guiding needle construction schematic diagram according to the present invention.

In figure：1. body, 2. guiding pins, 3. ball valves, 4. main pipes, 5. manifolds, 6. air inlet pipe, 7. sacculus, 11. side openings, 12. the mouth of pipe, 13. guide cones, 21. connectors, 22. needle bodies, 23. needle points, 24. bulge loops, needle body after 25., 26. collars, pin before 27. Body, 41. pipe portions, 42. guide cones, 43. mouths of pipe, 44. side openings, 45. base inner tubes, 46. combine inner tube, 47. shoulders, 61. outlets Mouthful.

Embodiment

It should be appreciated that for example guiding pin 2, as is generally understood, syringe needle and backshank are divided into its structure, thus, It is front and rear to be limited by syringe needle and backshank under this structural condition, before the direction where syringe needle is, after the direction where backshank is.

Similarly, for main pipe 4, advance based on puncture and exit, its head is guide cone 42, thus limit before it and Afterwards, should be clear.

It should be appreciated that such as multi-segment structure is not to represent the structure that segmentation combines, and it is analogous to ladder mechanically Axle, belong to more piece segment structure.

Referring to a kind of drainage tube shown in Figure of description 4-9, its basic structure includes：

Main pipe 4, for the straight tube with multi-segment structure, mainly have two sections in figure, positioned at one section of the head of main pipe 4 to draw Starting taper 42, one section positioned at the postmedian of main pipe 4 is pipe portion 41, and this two sections can smoothly combine, and the position being combined uses Circular arc or other geometric curved surfaces that can continuously lead connections, to reduce resistance.

Connecting portion may be constructed the flex point on geometric meaning.

Connecting portion can not also be the structure that can continuously lead, but being directly connected to for taper and cylinder, be such as pin Point 23, its taper（Basal diameter and cone height ratio）It is very small, that is, the transition of connecting portion on this condition is macroscopically It may be considered and seamlessly transit, in other words, angle between the lateral surface and cylinder of taper is close to 180 degree.

Wherein, the inner tube of main pipe 4 is also mainly also divided into two parts, base inner tube 45 as shown in Figure 5 and in combining Pipe 46, wherein, the front portion of the inner tube of main pipe 4 is located at reference to inner tube 46, base inner tube 45 is located at the postmedian of the inner tube of main pipe 4.

It is adapted with external structure, the inner tube ratio combination inner tube 46 of guide cone 42 is shorter, thus exists with reference to inner tube 46 The part in pipe portion 41 is axially taken, such as the part on right side in figure, in other words by the part inner tube of the side of guide cone 42, jointly Composition combines inner tube 46.It is cylindrical tube, specifically cylinder facial canal with reference to inner tube 46.

As shown in Figure 5（To clearly show that the structure of various pieces, the simplified painting that employed using accompanying drawing, eliminate Influence the structure division of representation）, further, relative to inner tube 46 is combined, in the inner tube in remaining pipe portion 41 is formed Footpath is more than the base inner tube 45 with reference to the internal diameter of inner tube 46, so as to form shoulder with combining the junction of inner tube 46 in the base inner tube 45 47。

As shown in figure 5, the structure of shoulder 47 can be represented more clearly, belong to the pipe connection institute of two different tube diameters Formed, shoulder 47 has trailing flank, so as to form load-carrying surface.

In general, drainage tube, all using the plastic tube with certain degree of hardness, in other words, drainage tube generally has certain Rigidity, different from flexible pipe, thus, the load-carrying surface that the trailing flank of shoulder 47 is formed has sufficiently large support strength, so as to full The needs punctured enough.

Further, a ball valve 3 is set, and the ball valve 3 is arranged on the rear portion of main pipe 4, for ending or opening supervisor Body 4.

The endoporus of the valve opening of ball valve 3 and institute's break-make pipeline is substantially identical, therefore, when ball valve is opened completely, makes supervisor The inner tube of body 4 is full through in favor of puncture procedure.

Based on main pipe 4, its main function is to puncture, and certainly, the inner tube of its middle front part is also required for drain and passed through.

In order to meet the needs of drainage, as shown in fig. 6, further provided for manifold 5 for drainage tube, main pipe 4 is connected to Middle part, for draining.

Partial manifold 5 is illustrate only in figure, it will be appreciated that manifold 5 with long, can drain the needs of connection with satisfaction, Such as it is connected in drain target bucket or other equipment.

In Fig. 6, manifold 5 forms Y-piece with main pipe 4, it will be appreciated that both can also form T-shaped pipe, in order to reduce stream Resistance, preferably with the former.

Further, an air bag 7 is set, and the air bag 7 is attached to the front outsides in pipe portion 41, in order to show out in figure Stomata 61, eliminates the main body of air bag 7, only manifests the part-structure of air bag 7.

It should be appreciated that air bag 7 is generally flexible body, under air deflating state, the side of main pipe 4 is even suspended from, generally also Too much influence, especially air bag 7 will not be produced to puncture need not be too big, if sacculus, its complete open configuration diameter It can also meet positioning requirements completely less than 0.5cm.Under air deflating state, its influence to puncture is substantially negligible.

So need to carry out the configuration of inflation/deflation for air bag 7, therefore, providing an air inlet pipe 6, the air inlet pipe 6 connects In the air bag 7, for supplying.

Air inlet pipe 6 uses flexible pipe, easily cut-off.

Further, there is provided there is the guiding pin 2 of specific structure, as shown in figure 9, the guiding pin 2 is with multi-segment structure Staight needle, the structure with multiple sections is fallen within, as shown in figure 9, it mainly has three structure divisions, one is positioned at should The needle point 23 of the anterior taper of pin 2 is guided, is referred to as syringe needle, needle point 23 is generally positive round cone, simplified painting in figure, cone Spend it is larger, in favor of clearly distinguishing.

Another section of guiding pin 2 is the preceding needle body 27 of the rear side of needle point 23.Preceding needle body 27 is cylinder, forms auxiliary section Point.

Another section of guiding pin 2 is the rear needle body 25 for forming the guiding postmedian of pin 2, and the agent structure of rear needle body is also Cylinder.

It is subject to ordinatedly, wherein formed with collar 26 corresponding with the shoulder 47 between preceding needle body 27 and rear needle body 25, The leading flank of collar 26 is resisted against the trailing flank of shoulder 47, and syringe needle 23 is leant out guide cone 42 just.

Syringe needle 23 leans out guide cone 42 just, then the lateral surface of syringe needle 23 and the lateral surface of guide cone 42 are easy for being formed The splicing structure that geometrically " can continuously lead ", so as to easily form good guide surface.

Wherein, the front end face of guide cone 42 is annulus, and naturally suitable lead of the annulus based on taper can form sword line, that is, A shaft shoulder position will not be directly formed because of guide cone 42, so as to influence to puncture.

Based on foregoing structure, the structure that can continuously lead easily is formed, in other words foregoing smooth continued access.

It is a kind of common geometry that can continuously lead in geometry, is mainly used to refer to curve, the letter that multi-section-line is formed Number figure.

In a preferred embodiment, the taper of the guide cone 42 is identical with the taper of syringe needle 23, and difficulty of processing will be big It is big to reduce.

Wherein the bus of the lateral surface of guide cone 42 can be flat so as to be formed further using the curvilinear structures that can continuously lead Sliding transition structure.

Understood based on foregoing structure, guide the needle point 23 of pin 2 to be cooperatively configured puncture portion with the guide cone 42 of main pipe 4 Position, wherein, the needle point 23 of guiding pin 2 is main piercing portions, and the side of guide cone 42 then belongs to guiding structural.

So puncture procedure is can be carried out from rear operating main pipe 4 and guiding pin 2.

Wherein main force application part is guiding pin 2, and main pipe 4 is used to be used as handle, to ensure the stability punctured.

After puncturing in place, it is quickly drawn out guiding pin 2, tube wall ball valve 3, so as to which end will in other words from the tail end of main pipe 4 The sealing-in of main pipe 4, the mouth of pipe 43 be referred to as drain entrance, comparatively, than side opening 11 as shown in Figure 1 drainage more By force, it is however generally that, the caliber of the main pipe 4 in Fig. 4 on this condition can be smaller than the caliber of body 1 shown in Fig. 1, Ke Yijin One step reduces the pain of patient.

And then the inner chamber of main pipe 4 just constitutes drainage lumens, in order to which drain is discharged, the manifold 5 is as drainage The pipeline that chamber picks out.

So, just need to fix pipeline after the completion of drainage portion operation, according to foregoing structure, utilize filling for air bag 7 Deflate and realize fixation, rather than the fixation with guiding pin 2, reduce many risks.

Further, the length of the preceding needle body 27 is identical with the length for combining inner tube 46, and in preceding needle body 27 and combination Matching somebody with somebody between pipe 46 is combined into interference fit, using being smoothed out for puncture, will not especially produce sharp keen combination edge, so as to Reduce the damage to tissue.

Wherein, the length of preceding needle body 27 is mainly used to ensure needle point 23 just from guide cone 42 with combining the length of inner tube 46 The mouth of pipe 43 pass.

During using interference fit, in other words using hole base system of fits, and inner tube should be combined as far as possible using light interference fit 46 caliber is substantially identical with the external diameter of preceding needle body 27.

Further, the external diameter of the preceding needle body 27 is identical with the external diameter of rear needle body 25, due to the caliber ratio of base inner tube 45 Caliber with reference to inner tube 46 is big, so that the rubbing surface suffered by guiding pin 2 is smaller, beneficial to the taking-up of guiding pin 2.

Especially in follow-up content, the setting of other accessory structures is also related to, guiding pin 2 is interior with base inner tube 45 Gap between wall be present, be advantageous to the configuration of other structures.

On the shoulder 47, it is necessary to certain axial length, so as to possess certain strength and stiffness, so as to full Sufficient bearing requirements, in a preferred embodiment, shoulder 47 arrive the tail end of guide cone 42, that is, the institute into guide cone 42 such as Fig. 4 The distance of the left side shown is 2mm ~ 5mm, so as to possess certain rigidity, and will not be oversize, influence to guide the withdraw of the needle of pin 2.

On shoulder 47, preferably using the lower limit value of above range.The main body of drainage tube is usually duroplasts material, pressure-bearing Ability is stronger.

In foregoing content, the air bag 7 can use sacculus, be offset to the side of main pipe 4, it will be appreciated that gas Capsule 7 should be located at the position of main pipe 4 for puncturing and entering, and can so play positioning fixation.

In such a configuration, although sacculus volume very little, but still can influence to puncture, therefore, in preferred embodiment In, the air bag 7 is looped around the surface of main pipe 4 by capsule skin, and both ends sealing-in forms, and thus, capsule skin is substantially attached to main pipe 4 Surface, the influence very little to puncture.

In said structure, it is only necessary to which air inlet pipe 6 connects with capsule skin, or the outlet that the side wall based on main pipe 4 is prefabricated Hole 61 forms connection.

Therefore, further, the air inlet pipe 6 runs through the side wall of main pipe 4 from the inside of main pipe 4 in certain embodiments And connected with the air bag 7.

Based on this, multi-cavity tubular construction can be used, one of chamber forms the part pipeline of air inlet pipe 6, and a chamber is formed Main pipe 4 in Fig. 4.

In certain embodiments, a kind of structure of multi-cavity tubular construction is the structure of tube chamber coaxial line, thereby caused outer Portion connecting structure is known, be will not be repeated here.

And in further embodiments, multi-cavity tubular construction uses parallel pipeline structure, and outside passes through a main pipeline bag Cover.

Further, when air inlet pipe 6 needs to penetrate main pipe 4, its structure is configured to air inlet pipe 6 and connected from main pipe 4 Passed before and after the position of manifold 5 in the range of 2cm, so that structure is compact, while reduce the interference to guiding pin 2.

Wherein, it is relatively small to the influence that guides pin 2 during the forward setting in air inlet pipe 6 passes position.

Preferably, the air inlet pipe 6 is flexible pipe, and is furnished with pipe clamp, can directly be clamped and can be kept away using pipe clamp after inflation Exempt from return-air.

Pipe clamp uses plastic pipe clip simple in construction, and cost is low, is suitable for this disposable medical consumptive material of drainage tube.

Preferably, the draw ratio of guide cone 42 is 5:1, the wherein footpath in draw ratio is the internal diameter of guide cone, is meeting to draw Under conditions of leading, axial length is relatively small.

The front portion in pipe portion 41 is provided with side opening 44, it will be appreciated that group should be entered positioned at puncturing by being provided with the region of side opening 44 The region knitted.

Under conditions of equipped with the mouth of pipe 43, the mouth of pipe 43 plays main drainage channel effect, and side opening is mainly booster action, It can be not provided with.

The mouth of pipe 43 in Fig. 4 is acted on and differed with the mouth of pipe 12 in Fig. 1, and in Fig. 1, the mouth of pipe 12 is used to connect guiding pin 2, and used not as drainage, thus, its side opening 11 must be provided with.And in Fig. 4, the mouth of pipe 43 is used for draining, therefore side opening 44 It can be not provided with.

Claims (8)

1. A kind of 1. drainage tube, it is characterised in that including：

   Main pipe（4）, for the straight tube with multi-segment structure, containing positioned at main pipe（4）Anterior guide cone（42）With positioned at master Body（4）The pipe portion of postmedian（41）；Wherein, guide cone（42）Inner tube and pipe portion（41）By guide cone（42）The portion of side Inner tube is divided to form the combination inner tube of cylindrical structure（46）, and remaining pipe portion（41）Inner tube form internal diameter be more than combine inner tube （46）The base inner tube of internal diameter（45）, so as in the base inner tube（45）With with reference to inner tube（46）Junction formed shoulder（47）；

   Ball valve（3）, it is arranged on main pipe（4）Rear portion, for ending or opening main pipe（4）；

   Manifold（5）, it is connected to main pipe（4）Middle part, for draining；

   Air bag（7）, it is attached to pipe portion（41）Front outsides；

   Air inlet pipe（6）, it is connected to the air bag（7）, for supplying；And

   Guide pin（2）, for the staight needle with multi-segment structure, containing positioned at the guiding pin（2）The needle point of anterior taper（23）, pin Point（23）The preceding needle body of rear side（27）Pin is guided with forming（2）The rear needle body of postmedian（25）；

   Wherein preceding needle body（27）With rear needle body（25）Between formed with the shoulder（47）Corresponding collar（26）, collar（26） Leading flank be resisted against shoulder（47）Trailing flank, and make needle point（23）Just guide cone is leant out（42）；

   The guide cone（42）Taper and needle point（23）Taper it is identical；

   The air bag（7）Main pipe is looped around by capsule skin（4）Surface, both ends sealing-in form.
2. 2. drainage tube according to claim 1, it is characterised in that the preceding needle body（27）Length and combine inner tube（46） Length it is identical, and preceding needle body（27）With with reference to inner tube（46）Between with being combined into interference fit.
3. 3. drainage tube according to claim 1 or 2, it is characterised in that the preceding needle body（27）External diameter and rear needle body （25）External diameter it is identical.
4. 4. drainage tube according to claim 1 or 2, it is characterised in that shoulder（47）To guide cone（42）The distance of tail end For 2mm ~ 5mm.
5. 5. drainage tube according to claim 1, it is characterised in that the air inlet pipe（6）From main pipe（4）Inside is through master Body（4）Side wall and with the air bag（7）Connection, and air inlet pipe（6）From main pipe（4）Connect manifold（5）Position before and after Passed in the range of 2cm.
6. 6. drainage tube according to claim 1 or 5, it is characterised in that the air inlet pipe（6）For flexible pipe, and it is furnished with pipe clamp.
7. 7. drainage tube according to claim 1, it is characterised in that guide cone（42）Draw ratio be 5:1, wherein draw ratio In footpath be guide cone internal diameter.
8. 8. the drainage tube according to claim 1 or 7, it is characterised in that pipe portion（41）Front portion be provided with side opening（44）.