CN103861159B - Urine educing device with bent hollow guide head - Google Patents

Abstract

The invention provides a urine educing device with a bent hollow guide head. The head end of the urine educing device comprises an insert tube head and an insert tube guide head, wherein the insert tube head comprises a conical section, a transitional section and a joint section; the diameter of the transitional section is gradually increased from the diameter of the bottom end of the conical section to the diameter of the joint section; the diameter of the joint section is outer diameter of the middle section of an insert tube; the conical section is internally provided with a lubricant nozzle inner hole and an insert tube guide head mounting stepped hole; the side wall of the lubricant nozzle inner hole is provided with at least one radial lubricant nozzle; the insert tube guide head mounting stepped hole and the insert tube guide head at the front end of a hollow guide core are tightly, easily and detachably matched; the joint section is provided with an insert tube mounting stepped hole; at the head end, the hollow guide core comprises an insert tube guide head at the front end, an insert tube of the transitional section and an insert tube of a straight section; a lubricant enters into a urine duct by virtue of the lubricant nozzle inner hole and the lubricant nozzle. According to the urine educing device, the thrusts of the insert tubes can be concentrated at the head end of a urine guide tube; the lubricant is capable of lubricating and expanding the urine duct in the whole process, further reducing the resistance of the insert tubes and reducing the inner wall damage of the urine duct.

Description

A kind of have the urine exporter bending hollow top guide

Technical field

The present invention relates to a kind of o urethral catheterization device, especially relate to can supplemental lubrication agent in real time urine exporter.

The urine exporter of the present invention includes the catheter of ripe title.

Background technology

Urethral catheterization is one of main operation of diagnosis and treatment of Urology Surgery.Before intubation, generally with lubricator smear catheter to subtract Few resistance, but in more than 20 centimeters of operational stroke, being located at the exit of prostatic hyperplasia more at the position the narrowest. This position is in the end of stroke.When catheter reaches this position, the amount of lubricant remains very little, and intubation resistance is big.Hardly possible is by stalk Resistance part position.

Not, when intubation is hampered, flexible deformation is difficult to insert conventional silica fubber cathete hardness, and thrust is difficult to concentrate on Catheter is most advanced and sophisticated, not easily passs through at obstruction, therefore, clinical catheterization often has failure.

Especially, for the male patient of prostatic hyperplasia, its prostate section urethra bending, elongation, urethra like crack shape, The prostata tissue of hypertrophy, to urethra inner process, urethra, makes Posterior urethral luminal stenosis, causes urinary catheter insertion difficult.

In order to solve difficult intubation, during intubation, how using catheter lubrication.But catheter close to go out prostate oral area when, Catheter head end does not have lubricant substantially, and this situation had both increased intubation difficulty, is easily caused urethral canal inner wall again and damages.

During clinical manipulation, often in catheter, core led by insertion tinsel, to increase catheter hardness, convenient operation.But In prior art, the tube head of catheter is solid, and seal wire can not reach its top and stress.If seal wire setting is too deep, Easily skid off at conduit side opening and damage urethra, excessively shallow, catheter proximal end loses seal wire and supports, be difficult because soft to import.

Particularly, insertion tinsel when leading core in catheter, leads core print end, tail end all unlocked.Tinsel can led Lengthwise movement in urinary catheter.Tinsel head end is easily deviate from side opening and is damaged urethra.And, tinsel is easily in catheter Rotate it is difficult to control operation.

In the case that failure inserted by catheter, how using bladder stoma paracentesis by the urine ejection of retention.Conventional fistulation is worn Thorn art is larger to the damage of patient, and bleeding is more, complex operation and easy infection.Bring larger misery to patient.

Content of the invention

It is an object of the invention to provide a kind of can supplemental lubrication agent in real time urine exporter, its can insertion urethra complete During provide at any time abundance lubricant, full dilating urethra.

Another object of the present invention be provide a kind of can supplemental lubrication agent in real time urine exporter, it can ensure that and pushes away Power concentrates on urethral catheterization tube head.

Another object of the present invention be provide a kind of can supplemental lubrication agent in real time urine exporter, it can prevent to lead Core abjection damages urethra.

Another object of the present invention be provide a kind of can supplemental lubrication agent in real time urine exporter, it can prevent to lead There is undesirable rotation in core.

For this reason, according to an aspect of the invention, it is provided a kind of head end of urine exporter is it is characterised in that described Head end includes intubation head and intubation top guide；Intubation head includes boring section, changeover portion and junction；The diameter of changeover portion is from cone The diameter of section bottom is gradually increased to the diameter of junction；The external diameter of a diameter of intubation interlude of junction；

In cone section, it is provided with lubricant nozzle endoporus and intubation top guide installation step hole；The side wall of lubricant nozzle endoporus It is provided with least one radial direction lubricant nozzle；Intubation top guide installation step hole and hollow lead the intubation top guide of core front end closely but Coordinate easily disassembledly；It is provided with intubation installation step hole in junction；

In head end, hollow leads the intubation that core includes the intubation top guide, the intubation of changeover portion and flat segments of front end；Lubricant Urethra is entered by lubricant nozzle endoporus and lubricant nozzle.

Preferably, intubation head also includes guiding ball, and the diameter of guiding ball is slightly larger than the diameter at the tip of cone section；In cone section Inside it is additionally provided with urethral catheterization stepped hole, the side wall of urethral catheterization stepped hole is provided with least one hole of urinating, and urethral catheterization stepped hole extends to transition Section, and the central axis extension along changeover portion, between the outer wall of urethral catheterization stepped hole and the hollow inner core of intubation top guide, form Cross section urethral catheterization passage ringwise；And urine is urinated through urethral catheterization passage by hole of urinating；And/or, lubricant nozzle is simultaneous Urinate hole.

Preferably, changeover portion is straight type or curved structure.

Preferably, intubation is provided with fluid cell and fills fluid passage, drug irrigation passage；And/or, intubation is being led near hollow One end of the intubation top guide of core is provided with side opening of urinating, and the position setting excretion cone-shaped interface away from head end, fluid cell interface, Drug irrigation interface.

Preferably, head end and the main body of urine exporter are connected structure or integrative-structure.

Preferably, the cornerite that catheter head end and hollow lead the curve transition section of core is -180 ° of α=120 °.

Preferably, its top is guiding ball or opening.

Preferably, side opening of urinating is located in intubation, and fluid cell is located in intubation, and intubation top guide is located at side opening front end, excretion Cone-shaped interface is located at intubation afterbody；And/or, it is made up of medical grade silicon rubber material.

Preferably, production technology include refining glue, be squeezed into pipe, mould pressing cavity head, molding air bag, molding top guide, punching deburring, Envelope inner peripheral, bonding top guide etc..

According to another aspect of the present invention, there is provided a kind of urine exporter, it is provided with fluid cell in urethral catheterization intubation Passage, medicine liquid channel, urinary pathway are it is characterised in that the hollow being provided with urethral catheterization intubation for conveyor lubricant leads core；Should The front end that hollow leads core tight but coordinate the head in the urethral catheterization intubation as described in one of them as claim 1-9 easily disassembledly End；The tail end that this hollow leads core is interference fitted in and leads on core print seat；The front leading the front end of core in hollow is provided with horizontal lubricant Nozzle；Lead the lubricant passageway that core communicates leading setting in core print seat with hollow；Lubricant injection device is with this lubricant passageway even Logical.

According to the present invention, lubricant is in intubation whole all Castor Oil and dilating urethra, and then the resistance of reduction intubation, reduces Urethral canal inner wall damages.

According to the present invention, because hollow leads the hardness that core increased catheter, the intubation of catheter can be guided, make Intubation propulsion in will not flexural deformation, make thrust can concentrate on the head end of catheter, therefore, intubation is easily by the patient Narrow and region of obstruction.

According to the present invention, because the two ends that hollow leads core are all fixed by interference fit it is impossible to slide before and after in catheter Move or double swerve, can prevent from damaging urethra because leading core to deviate from side opening, and can be coaxial with catheter, equidirectional, same The rotation of angle ground.Catheter, hollow lead core, lead core print seat can coaxially, in the same direction, with angle rotation；Catheter, hollow are led core, are led core Seat, injection device or injection device front end coaxially, in the same direction, rotate with angle therefore, can be precisely controlled the motion side of catheter To and angle.

Brief description

Fig. 1 is the urethral catheterization principle schematic of the intubation leading core according to the present invention with hollow.

Fig. 2 is the mounting structure schematic diagram that intubation head according to the present invention and hollow lead core head.

Fig. 3 is intubation afterbody according to the present invention and hollow is led core afterbody and shown with the mounting structure of intubation afterbody attachment means It is intended to.

Fig. 4 is the mounting structure schematic diagram leading core and injection device according to the hollow of the present invention.

Fig. 5 is the mounting structure schematic diagram of the injection device according to the present invention and syringe.

Specific embodiment

As described in Figure 1, head end, interlude, tail end and lubricating syringe are included according to the urine exporter of the present invention. Wherein, so-called interlude is that built-in hollow leads core on the basis of traditional catheter；Head end is in traditional intubation head Put intubation top guide；Tail end includes intubation afterbody locker and hollow leads core afterbody locker.

Further say, in head end, intubation top guide is led core with the hollow of interlude and connected.In one embodiment, intubation Mouth of urinating be arranged on the downstream of intubation top guide, be located at the downstream portion of head end, and it is fixing in head end to be located at intubation pars intermedia The upstream of point；The nozzle that hollow leads the lubricant of core is arranged on the downstream of intubation head and the upstream of intubation top guide.This embodiment It is more beneficial for intravesical urine emptying.

In the embodiment that another one structure simplifies, the nozzle of the lubricant that the mouth of urinating of intubation leads core with hollow is permissible It is a hole.

In tail end, the afterbody of intubation afterbody locker and intubation interlude can facilitate and releasably links together；Hollow is led Together with the afterbody that core afterbody locker leads core with hollow is firmly attached；The afterbody that hollow leads core leads the locking of core afterbody by hollow Device is connected with lubricating syringe.

Meanwhile, the intubation pars intermedia of intubation interlude is additionally provided with to air bag inflatable mouth and medicinal liquid inlet, air bag passage and Medicine liquid channel can be same as the prior art.

In the present invention, air bag of the prior art can be replaced by fluid injection swelling bag or gas injection swelling bag.Injection Gas, except air, can also be other gases；The liquid of injection, except water, can also be other liquid.

In one embodiment, head end and interlude are plugged in together.

In another embodiment, head end and interlude are the structures of one.

As shown in Fig. 2 in one embodiment, the head end of the urine exporter according to the present invention includes intubation head 10- 13 and intubation top guide 20.

Intubation head 10-13 includes guiding ball 10, cone section 11, changeover portion 12 and junction 13.The diameter of guiding ball 10 is slightly Diameter more than the tip of cone section 11；The diameter from cone section 11 bottom for the diameter of changeover portion 12 is gradually increased to the straight of junction 13 Footpath；The external diameter of a diameter of intubation interlude of junction 13.

In cone section 11, it is provided with lubricant nozzle endoporus 16, intubation top guide installation step hole 17 and urethral catheterization stepped hole 18. The side wall of lubricant nozzle endoporus 16 is provided with least one radial direction lubricant nozzle 14.Intubation top guide installation step hole 17 with The intubation top guide 20 that sky leads core front end keeps good adaptation, but is easy to after successful intubation easily to extract hollow and leads core 22.The side wall of urethral catheterization stepped hole 18 is provided with least one hole 15 of urinating.

Urethral catheterization stepped hole 18 extends to changeover portion 12, and the central axis along the bending of changeover portion 12 extends.In urethral catheterization Between the outer wall of hollow inner core 21 of stepped hole 18 and intubation top guide 20, form cross section urethral catheterization passage 23 ringwise.Connecing Head section 13, is provided with intubation installation step hole 19.

In head end, hollow leads the hollow leading core elbow 21 and flat segments that core includes the intubation top guide 20 of front end, changeover portion Lead core 22.Direction shown in along arrow R1, R2, R3, R4, R5 for the lubricant enters lubricant nozzle endoporus 16, then along arrow R6 institute The direction showing enters urethra by lubricant nozzle 14.And direction shown in along arrow N for the urine enters hole 15 of urinating, lead to through urethral catheterization Urinated in road 23.

In various different embodiments, the changeover portion of head end can be straight type or curved structure.

In one embodiment, lubricant nozzle 14 can be also served as hole of urinating, a hole, in the intubation stage, is made For lubricant nozzle, and after extracting hollow and leading core, and as hole of urinating.As such, it is possible to simplify the internal structure of head end, wing In Guang, the output of urine, will not be much affected.

The same with the three-cavity catheter of prior art, intubation also can be provided with traditional air bag and filling channel, also can have medicine Thing (flushing) passage.Intubation is provided with hole of urinating (side opening) 15 in the one end of the intubation top guide leading core near hollow, and away from head The position setting excretion cone-shaped interface 132 at end, balloon interface (not shown), drug irrigation interface (not shown).Urinate hole 15 (side Hole) it is located in intubation, air bag is located in intubation, and intubation top guide is located at the front end of side opening 15, and excretion cone-shaped interface 132 is located at intubation Afterbody.

In another embodiment, air bag and filling channel can be substituted for liquid capsule and topping up passage.

However, the present invention comprises the fluid lubricant passage that prior art does not possess.

In one embodiment, the present invention adopts medical grade silicon rubber material, and production technology includes refining glue, is squeezed into pipe, mould Pressure chamber head, molding air bag, molding top guide, punching deburring, envelope inner peripheral, bonding top guide etc..

As shown in figure 3, the taper seat that the tail end 131 of intubation 13 gradually expands for diameter, the inner side of tail end 131 is provided with circular cone Hole 132.The inner conical surface of conical bore 132 is matched with the male cone (strobilus masculinus) of the conulite 41 of intubation afterbody locker 43.Intubation 13 Tail end 131 is slided to the direction away from intubation by lock sleeve 50 and is locked on intubation afterbody locker 43.

Intubation afterbody locker 43 is provided with hollow cylinder 42 in the one end away from conulite 41.

The afterbody 23 that hollow leads core 22 is fitted close or is interference fitted in the lock hole 32 that hollow leads core afterbody locker 30 Interior.

As shown in figure 4, hollow leads the open tubular column that core afterbody locker 30 is removably mounted on intubation afterbody locker 43 On body 42.

In one embodiment, two projections are arranged on the outer surface of the hollow cylinder 42 of intubation afterbody locker 43 44th, 45, and hollow is led setting on core afterbody locker 30 and can be enclosed in the coupler body 31 of raised 44,45 peripheries by its rotation. The hook and slot 37 making structure body 31 avoid raised 44,45 also can be arranged on coupler body 31.Coupler body 31 sets in the side leading core 22 in the face of hollow There is locking to fasten 38 receiving half groove, accommodate locking together with the space between this receiving half groove with raised 44,45 and fasten 38.Locking fastens 38 The solution locked groove that width is slightly larger than raised 44,45 also can be provided with the side leading core 22 in the face of hollow, so, locking is fastened 38 and can be become Fasten for pushing away, more convenient operation, when locking is fastened 38 and is pushed to unblock groove face to raised 44,45, coupler body 31 is in released state；And When locking is fastened 38 and is pushed to solution locked groove deviation projection 44,45, coupler body 31 is in the lock state.

In another embodiment, can by one simply elasticity step up folder hollow is led core afterbody locker 30 It is removably attached on the outer surface of hollow cylinder 42 of intubation afterbody locker 43.

In addition, hollow leads core afterbody locker 30 in the side away from intubation head, it is provided with front end of the syringe needle insertion taper hole 33.The smaller diameter end that this front end of the syringe needle inserts taper hole 33 is arranged on the end face that hollow leads the tail end 23 of core, and larger diameter end sets It is placed on the bench port inner face in front end of the syringe needle chamber 35.

In one embodiment, the bench port outer face in front end of the syringe needle chamber 35 is additionally provided with for being combined with injection device Dentation junction surface 36.Injection device 60 is included for leading, with hollow, the bottom surface band dentation joint portion that core afterbody locker 30 engages Engaging hole 62, allow the centre bore 64 that passes through of front end of the syringe needle 91 and syringe placed cavity 61.Injection device 60 is at least the bottom of at The outer surface at the engaging hole 62 place position with dentation joint portion for the face is provided with connection screw thread.Hollow is led on core afterbody locker 30 also The locating slot 301 of elastic washer 70 can be set.Locking cap 80 is provided with and accommodates endoporus 81 He that hollow leads core afterbody locker 30 Locking female thread 82.Locking cap 80 is passed through to lock female thread 82 and makes hollow lead core afterbody locker 30 to be connected with injection device Connect.

In another embodiment, injection device is a simple air bag syringe, is provided with check-valves, injection Can be smooth end face on the bench port outer face of device placed cavity 35.

In another embodiment, the check-valves of lubricant are not arranged in air bag syringe, and in being provided in Sky is led in tail end 23 or the front end of the syringe needle insertion taper hole 33 of core.

As shown in figure 5, syringe includes injection tube 90, front end of the syringe needle 91, piston 92, injection rod 93 and push-plate 94.Note Emitter front end 91 passes through the centre bore 64 of injection device 60, so that injection tube 90 is placed in syringe placed cavity 61.Injection device 60 The outer surface of the lower section of syringe placed cavity 61 be provided with guide rail 65.Stepping tooth bar 66 can move forward length by length along guide rail 65 Dynamic, thus push-plate 94 can be promoted with the pushing ram 68 of stepping tooth bar 66 one, piston 92 is promoted to previous by injection rod 93 Walk mobile, lubricant is pushed the tail end 23 that hollow leads core with thus having dosage.

Injection tube 90 is fixedly mounted on injection device 60 by pressurization retaining device 70.This pressurization retaining device 70 is permissible Appropriate configuration of the prior art, it may for example comprise one can around the baffle plate pivoting and in this baffle plate both sides around injection The bending backplate with transverse elasticity of cylinder 90, the backplate of every side is designed with backstop.During by lower baffle plate, this baffle plate can overcome two The elasticity of side guard plate and reach the lower section of backstop, backstop fastening act under, baffle plate can not be back to the top of backstop, thus Injection tube 90 is fixedly mounted on injection device 60 by baffle plate.

On the contrary, take off injection tube 90 if necessary, as long as firmly lifting baffle plate upwards, baffle plate can overcome the bullet of two side guard plates Property, release the fastening effect of backstop, make baffle plate reach the top of backstop, thus injection tube 90 can unload from injection device 60 Under.

Stepping tooth bar 66 is spacing by non-return baffle plate 67.Stepping tooth bar 66 includes a series of tooth, and non-return baffle plate 67 inserts it In in a tooth, in Figure 5, tooth bar 66 is moved to the left and is not subject to constraining of non-return baffle plate 67, but by non-return baffle plate 67 constraint not Can move right.

It is provided with propulsion trigger 69, this propulsion trigger 69 becomes under the action of the spring in the handle (not shown) of injection device 60 In not promoting to certain tooth of stepping tooth bar 66.If firmly holding this propulsion trigger 69, then, propulsion trigger 69 just overcomes The effect of spring, makes a tooth on a pushes stepping tooth bar 66 on propulsion trigger 69 so that stepping tooth bar 66 Life is moved to the left the pitch of a tooth in Figure 5, thus lead the lubricant advancing doses in the tail end 23 of core to hollow.

According to the present invention, catheter has hollow and leads core, and catheter top guide has lubricant passageway or opening；Lead core print seat 30 Can be easily detachably connected with injection device 60, realize coaxially same turning.

According to the present invention, when using this catheter, lubricant via hollow lead the tail end 23 of core from injection device 60 to Reach the head end of catheter, then the lubricant passageway at head end top guide enters urethra.So, it is ensured that in catheterization procedure, Whole process has enough lubricants to be located at the head end of catheter, and meanwhile, the lubricant injecting from catheter head end also acts as expansion Open the effect of urethra, and then the resistance of reduction intubation, reduce the damage of urethral canal inner wall.In catheter, the hollow of setting is led core and can be increased Plus the hardness of catheter, make thrust concentrate on the head end of catheter, therefore, catheter is easily by narrow and stalk in the patient Resistance part position, to facilitate operation.

According to the present invention, the top of catheter head end is top guide or opening shape.

When catheter head end is top guide, at least one fluid passage (non-drug or punching being used for shot lubrication agent of top guide Wash passage).Hollow leads the head end (i.e. intubation top guide) of core within the head end of catheter.Hollow leads head end and the top guide tail of core There is good adaptation in portion, and lubricant leads core and by top guide fluid passage entrance urethra through hollow.

When catheter head end top is opening-like, the head end that hollow leads core is located at catheter head end top end opening or stretches out Beyond at opening.Hollow is led has good adaptation at the head end of core and urethral catheterization tube opening, and lubricant leads core print end from hollow Fluid passage enters urethra.

According to the present invention, led due to hollow and there is between the head end of core and top guide good sealing and tight fit relation, lead Urinary catheter head end and hollow lead core achieve between the two can coaxial, equidirectional, rotate with angle.

According to the present invention, core print end is led due to catheter head end and hollow and is fitted close, lubricant can lead core simultaneously through hollow Urethra is entered by top guide fluid passage.

According to the present invention, core print end is led due to catheter head end and hollow and is fitted close, hollow leads core can not be in catheter Middle slide anteroposterior or double swerve.

According to the present invention, hollow is led core front end at least and is used for conveying the opening of liquid substance.

According to the present invention, when catheter head end top is top guide, hollow is led core print end and is located at top guide afterbody, and hollow leads core print End and top guide afterbody have good adaptation, and lubricant can lead core and by top guide lubricant passageway entrance urethra through hollow.

According to the present invention, when urinary catheter top is opening, hollow is led core print end and is located at catheter top end opening or stretches out out At mouthful, hollow leads the not essential soft head device in core print end, and hollow leads cooperation, lubricant at core print end and urethral catheterization tube opening Lead core through hollow and enter urethra.

According to the present invention, the tail end that hollow leads core is provided with and leads core print seat 30, and this is led core print seat 30 and be used for fixing hollow and leads core 22.

According to the present invention, leading core print seat 30 can be coordinated by attachment means 43,50 and catheter excretion cone-shaped interface 132, Also directly can drain cone-shaped interface 132 with catheter to coordinate.

According to the present invention, hollow leads core except head end outer wall and the cooperation of catheter head end, and tail end leads core print seat and excretion taper Outside Interference fit, hollow is led has certain interval between the outer wall in core stage casing and urethral catheterization inside pipe wall.

According to the present invention, hollow leads core head to be had a bending (- 180 ° of α=120 °) or no bends.Catheter head end and hollow Leading core all has the bending (- 180 ° of α=120 °) being mutually matched and equal, or all no bends.

According to the present invention, hollow is led core and is led the not essential passage being communicated with air of core print seat；The core print seat of leading that hollow leads core can Having can no hand holding handle.

According to the present invention, hollow leads being connected of core print end and catheter head end, hollow is led core tail end and led core print seat and lead Urinary catheter excretion cone-shaped interface is connected, hollow is led core carried out spacing so that in operating process hollow lead core and can not lead Slide anteroposterior and/or double swerve in urinary catheter.

According to the present invention, hollow is led core tail end and is led core print seat (no handle) and can be connected with injection device, also can be not connected to inject Device.

According to the present invention, catheter, hollow lead core, lead core print seat can coaxially, in the same direction, with angle rotation；Catheter, hollow are led Core, lead core print seat, injection device or injection device front end can coaxially, in the same direction, with angle rotation.

According to the present invention, injection device can be filling gun, syringe, sacculus or any one form of infusion pump.Injection dress Put and lead core print seat to be fitted close.Injection device is detachable.Filling gun is multi-level injection, and injection volume can control.Hollow is led core, is led core Seat, injection device can coaxial rotating.

According to the present invention, hollow is led core and is had certain hardness, can guide the intubation of catheter, in addition, still The conveyance conduit of lubricant.Lead that core hard is moderate so that intubation can pass through the narrow positions of prostate.

According to the present invention, hollow is led core print end and is connected it can be ensured that lubricant enters urine with the sealing of catheter head end Road.

According to the present invention, hollow is led core tail end and is led and is connected at core print seat and catheter excretion cone-shaped interface, can limit and lead The motion of core print seat.

According to the present invention, catheter head end has injection canal, and lubricant leads core, urethral catheterization tube head from injection device through hollow End enters urethra, and the whole shot lubrication agent of energy in catheterization procedure, even if also can guarantee that enough profits in prostate exit Lubrication prescription, thus intubation resistance can be reduced.

According to the present invention, lubricant projects from the fluid passage of catheter top guide, and substantial amounts of lubricant enters urethra, has The effect of dilating urethra.

According to the present invention, hollow is led core and is supported whole catheter, and has certain degree of hardness so that will not bend in intubation propulsion Deformation, the strength of propulsion concentrates on catheter head end, easily passes through narrow region of obstruction.

According to the present invention, lead core print end, tail end fixation spacing, it is to avoid lead lengthwise movement in catheter for the core, can prevent Only damage urethra because leading core to deviate from side opening.

According to the present invention, lead core print end, tail end fixation spacing, catheter, hollow are led core, are led core print seat, injection device or note Injection device front end can coaxially, in the same direction, with angle rotation, therefore, can be accurately controlled catheter the direction of motion and insertion angle.

Closely but easy-off fit structure, can be for example spline fitted structure.

Claims (12)

1. a kind of head end of urine exporter is it is characterised in that described head end includes intubation head and intubation top guide and described Intubation top guide is built in described intubation head, the built-in hollow of intubation head leads core front end, hollow leads core changeover portion intubation and in Sky leads core flat segments intubation；Intubation head includes boring section, changeover portion and junction；The diameter of changeover portion is from the diameter of cone section bottom It is gradually increased to the diameter of junction；The external diameter of a diameter of intubation interlude of junction；It is provided with lubricant nozzle in cone section Endoporus and intubation top guide installation step hole；The side wall of lubricant nozzle endoporus is provided with least one radial direction lubricant nozzle；Insert Pipe top guide installation step hole is tight with intubation top guide but coordinates easily disassembledly；It is provided with intubation installation step hole in junction；Profit Lubrication prescription passes through lubricant nozzle endoporus and lubricant nozzle enters urethra.

2., it is characterised in that intubation head also includes guiding ball, the diameter of guiding ball is bigger for head end as claimed in claim 1 Diameter in the tip of cone section；And/or, it is additionally provided with urethral catheterization stepped hole in cone section, the side wall of urethral catheterization stepped hole is provided with least One hole of urinating, urethral catheterization stepped hole extends to changeover portion, and the central axis along changeover portion extends, in urethral catheterization stepped hole with insert Between the outer wall of the hollow inner core of pipe top guide, form cross section urethral catheterization passage ringwise, and urine by hole of urinating through urethral catheterization Passage is urinated.

3. head end as claimed in claim 1 is it is characterised in that changeover portion is straight type or curved structure.

4. head end as claimed in claim 1 it is characterised in that urine exporter head end further with urine exporter in Between section link together, described interlude includes intubation pars intermedia；This intubation is provided with fluid cell and fills fluid passage, drug irrigation Passage；And/or, this intubation is provided with, in the one end of the intubation top guide leading core near hollow, side opening of urinating, and in the position away from head end Install excretion cone-shaped interface, fluid cell interface, drug irrigation interface.

5. head end as claimed in claim 1 is it is characterised in that in the middle of the intubation of the head end of urine exporter and urine exporter Section is connected structure or integrative-structure.

6. the head end as described in claim 1 or 3 it is characterised in that described head end changeover portion, described head end and hollow are led The cornerite of core is -180 ° of α=120 °.

7. head end as claimed in claim 1 is it is characterised in that the top of described head end is guiding ball or opening.

8. head end as claimed in claim 1 it is characterised in that urine exporter head end further with urine exporter in Between section link together, described interlude includes intubation pars intermedia；Side opening of urinating is located in this intubation, and fluid cell is located at intubation On, intubation top guide is located at side opening front end, and excretion cone-shaped interface is located at intubation afterbody.

9. head end as claimed in claim 1 is it is characterised in that production technology includes refining glue, is squeezed into pipe, mould pressing cavity head, mould Pressuring gasbag, molding top guide, punching deburring, envelope inner peripheral, bonding top guide.

10. a kind of urine exporter, is provided with fluid cell passage, medicine liquid channel, urinary pathway, its feature exists in its urethral catheterization intubation In the hollow being provided with for conveyor lubricant in this urethral catheterization intubation leads core；The front end that this hollow leads core is tight but easily disassembled Ground cooperation is in the head end of the urine exporter as described in one of claim 1-9；This hollow leads the tail end interference fit of core On leading core print seat；The front leading the front end of core in hollow is provided with horizontal lubricant nozzle；Lead with hollow leading setting in core print seat The lubricant passageway that core communicates；Lubricant injection device is connected with this lubricant passageway.

11. head ends as claimed in claim 1 hole it is characterised in that lubricant nozzle doubles as urinating.

12. head ends as claimed in claim 1 are it is characterised in that described head end is made up of medical grade silicon rubber material.