CN201814968U - Spiral-head catheter of ureter - Google Patents

Abstract

The utility model provides a spiral-head catheter device of a ureter. The spiral-head catheter comprises a polyurethane catheter which comprises two sections and has a hollow catheter structure with openings at two ends, wherein one section of the polyurethane catheter has a spiral coiled ring-shaped structure from small to large, and the other long section of the polyurethane catheter is a straight pipe. The catheter is simple to operate, can prevent calculus from moving upwards, and is convenient for lithotripsy.

Description

A kind of ureter spiral head conduit

Technical field

This utility model relates to technical field of medical instruments, particularly a kind of ureter spiral head conduit.

Background technology

Development and utilization along with tubule footpath ureteroscope, less invasive techniques such as holmium laser lithotripsy, pneumatic ballistic lithotripsy, electrohydraulic lithotripsy, ultrasonic rubble are applied to treat ureteral calculus more and more under the ureteroscope, these methods are simple to operate, wound is little, recovery is fast, therapeutic effect is desirable, and can handle ureter bilateral calculus simultaneously, its unique advantage is arranged, accepted by extensive patients.But for ureter epimere calculus, the obviously middle hypomere calculus of its success rate is low.This mainly be since epimere ureteral calculus position near renal pelvis, calculus nearly section ureter is owing to block back hydrops expansion, in ureteroscope rubble process, because impacting and the flushing of infusion liquid of calculi breaking device, calculus chip even calculus main body can enter the renal pelvis renal calices by near section transposition of ureter of expansion, cause ureteroscope rubble difficulty or postoperative residual stones, thereby cause rubble success rate and calculus free rate to reduce, and the successive treatment of residual calculus has increased patient's misery and expense.

In order to prevent to move on the calculus, usually make the patient take head height foot low level clinically, control charge pump current, the rubble bar gently is pressed in calculus on the ureter wall and smashes during pneumatic ballistic lithotripsy, these methods are effectively fixing calculus all, simultaneously, because of patient's ureter when the head height foot low level easily twists discounting, brought inconvenience to operation.At this situation, being commonly used to fixedly clinically at present, the instrument of calculus has: ureter balloon catheter, cover stone basket and retaining stone basket.Though the application of these instruments has reduced the generation that moves on the calculus to a certain extent, but still have many deficiencies: 1. need assistant's coordinated in the operation process, control these instruments, especially overlap stone basket and retaining stone basket, tacit degree requires high, and is more consuming time.2. cost an arm and a leg, apply influenced.3. these tool makings are meticulous, the wire netting filament of cover stone basket and retaining stone basket is tiny, the airbag wall of ureter balloon catheter is thinner, and undue force, bump and impacting all of rock breaking tool not accurate, sharply rubble can be caused damage during operation, increase operation risk and expense.In addition, pressure height behind the air bag water filling of ureter balloon catheter or the inflation has the ureteral possibility of damage when breaking.Cover stone basket needs constantly to adjust and the rotation basket when extracting calculus, so that calculus falls into, more consuming time, especially the calculus diameter is all the more so near the calculus in basket twine gap.Be to hit stone when impacting calculus in the twine gap of basket, need constantly to adjust the distance between basket and mirror mouth or rotate basket and search out best rubble point, fritter rubble one by one is if any deviation, then easily strike off the tiny metal twine of basket and need to change increase operating time and expense.Because of the calculus chip at the embedded folder of basket, influence basket retraction, cause and withdraw from difficulty, increase operation risk.Because basket end be tiny steel wire welded contact, fail unsettledly in ureteral lumen as basket in the rubble process, and sharp keen calculus face and basket compressing easily cause local mucous membrane of ureter to damage under the impact of rubble on ureter wall, even bore a hole.Retaining stone is blue as stopped by scree or the rubble embedding is clipped in the grid, then can influence the retraction of retaining stone basket, causes withdrawing from difficulty, increases operation risk.

The utility model content

This utility model provide a kind of simple to operate, expense is low, can stop on the calculus ureter spiral head conduit that moves, makes things convenient for rubble operation.

To achieve these goals, this utility model provides following technical scheme:

A kind of ureter spiral head pipe guide, it comprises: a polyurethane catheter, described polyurethane catheter comprise two sections, and described polyurethane catheter is the hollow conduit structure of both ends open, one section is helical coil round structure from small to large, and the long section of another of described polyurethane catheter is a straight tube.Preferably, one section point of interface with another section of described polyurethane catheter is the spiral starting end, and an other end of one section of described polyurethane catheter is an outermost end, and described helical coil round structure becomes big gradually from described spiral starting end to described outermost end.

Preferably, the girth of described polyurethane catheter be 3fr (3fr=3mm, diameter: 3mm/3.14=0.96mm), length 75cm.

Preferably, be close between the circle of described helical coil round structure and the circle.

Preferably, be provided with side opening from the spiral outermost end of described polyurethane catheter, the tube wall of described polyurethane catheter, the 1cm of being separated by between each side opening, until the 25cm place of the long section of another of described polyurethane catheter, and adjacent two side holes is not or not same plane.

Preferably, the described polyurethane catheter surface 5cm of whenever being separated by is provided with length scale sign, and is provided with the scale sign at the spiral starting end of described polyurethane catheter.

By implementing above technical scheme, have following technique effect: the conduit that this utility model provides is simple to operate, and the insertion skill that only needs to grasp ureteral catheter just can be operated, and the rubble operating process can be finished by the patient one man operation.Product different from the past needs the collaborative tacit agreement cooperation of assistant to control, and has simplified operation sequence greatly.

Gravel particle is little, wound is little.Because the material of conduit is to select polyurethane (material of double J pipe (two pigtail conduit)) for use, it is strong to have ageing resistance, histocompatibility is good, avirulence, the surface dead smooth, flexibility is good, has elasticity, and toughness is big, the characteristics of easy fracture not, and one section helical coil round structure that is from small to large of the helical coil round of conduit, press close between circle and the circle, in the ureteral lumen of expansion, after the guiding seal wire withdraws from, conduit can be borrowed good flexibility and the elasticity of conduit, one section of the helical coil round retracts into the helical coil round structure that big ringlet is pressed close to, can effectively stop calculus on move, calculus can fully be pulverized.Good because of catheter surface dead smooth, flexibility, can not damage ureter.

Have good toughness and pull resistance, do not have meticulous micro-structure, not fragile or fracture.

Cheap, be convenient to clinical application.

Operating time is short, the success rate height, and post-operative recovery is fast.One section of the helical coil round of conduit retract into spiral cyclic structure that big ringlet presses close to can effectively stop calculus on move the success rate of operation height.Seek calculus because of spending more time in the rubble process, thereby shorten operating time, reduce patient's infringement, be more conducive to post-operative recovery.

Calculus is difficult for the displacement renal pelvis in the rubble process, the chance that the antibacterial that calculus discharges when reducing rubble, toxin etc. enter renal pelvis with flushing liquor, simultaneously, the conduit both ends open has numerous side openings, and is different with existing product, the good sustained drainage is arranged, more can reduce the renal pelvis injection pressure, reduce toxin and enter blood, further reduce the probability of postoperative infection, heating.

The patient little to damage in the Rhizoma Atractylodis Macrocephalae, that operating time short, the calculus volume is little, postoperative can directly be made this spiral head conduit stent drainage effective (traditional ureter support arm drain before being equivalent to), and sterile bag is inserted in the catheter body outer end.And do not need to keep somewhere again double J pipe (two pigtail conduit), and shortened operating time, and postoperative 7 days can pull out smoothly external, do not need under cystoscope, to pull out again, obviously reduced patient's misery and expense.

Description of drawings

The structural representation of the ureter spiral head conduit that Fig. 1 provides for this utility model embodiment (shortening the volume cyclic structure into);

The structural representation (linearity structure) of the ureter spiral head conduit that Fig. 2 provides for this utility model embodiment;

The application structure sketch map (having seal wire) of the ureter spiral head conduit that Fig. 3 provides for this utility model embodiment;

The application structure sketch map of the ureter spiral head conduit that Fig. 4 provides for this utility model embodiment (after extracting seal wire out).

The specific embodiment

In order better to understand the technical solution of the utility model, describe the embodiment that this utility model provides in detail below in conjunction with accompanying drawing.

This utility model embodiment provides a kind of ureter spiral head pipe guide, as Fig. 1, Fig. 3 and shown in Figure 4, this pipe guide comprises: apolyurethane catheter 100, describedpolyurethane catheter 100 comprises two sections, onesection 110 of polyurethane catheter,another section 120 of polyurethane catheter, onesection 110 of described polyurethane catheter is helical coil round structure (for 20cm) from small to large, and the long section of another of described polyurethane catheter 120 (being 75cm) are straight tube.It is strong that thispolyurethane catheter 100 has ageing resistance, and histocompatibility is good, avirulence, and surperficial dead smooth, flexibility is good, has elasticity, and toughness is big, not the characteristics of easy fracture.Seal wire passes thisconduit 100, the helical coil round structure of thisconduit 100 then can be supported byseal wire 301 and become straight, wholely then all becomesstraight conduit 100 and passes ureter 203,201 andpass calculus 202 and ureteral contact position under the supporting role power of seal wire 301.Wherein, the ureter ofureter 201 for causing because ofcalculus 202 obstructions expanding on the pathology,ureter 203 is normal ureter.

In the specific embodiment, onesection 110 point of interface with anotherlong section 120 of described polyurethane catheter is spiral startingend 103, an other end of onesection 110 of described polyurethane catheter is anoutermost end 104, and it is big that described helical coil round structure becomes gradually from described spiral starting end to describedoutermost end 104.

As shown in Figure 2, the girth of described polyurethane catheter be 3fr (3fr=3mm, diameter: 3mm/3.14=0.96mm), total length 75cm.The length that is equivalent to ureteral catheter commonly used clinically.

Preferably, be close between the circle of described helical coil round structure and the circle.，

In the present embodiment, preferably, as shown in Figure 2, be provided withside opening 105 from theoutermost end 104 of describedpolyurethane catheter 100, the tube wall of describedpolyurethane catheter 100, the 1cm of being separated by between each side opening 105, until the 25cm place of describedpolyurethane catheter 100 another sections, and adjacent twoside holes 105 is not or not same plane.

In the present embodiment, preferred, as shown in Figure 2, the describedpolyurethane catheter 100 surfaces 5cm of whenever being separated by is provided withlength scale sign 106, and is provided with the scale sign at the spiral startingend 103 of describedpolyurethane catheter 100, is spiral startingend 103.

Get lithotomy position under the epidural block anesthesia continuously, two lower limb are sagging as far as possible, adopt hard mirror of wolf8.0/9.8F ureter and hydraulic pressure charge pump system, bladder is inserted with the ureteroscope per urethra in television monitoring side bets waterside, in employing rotation under the guiding of zebra seal wire or ureteral catheter, choose ureteroscope is insertedIpsilateral ureter 203 into the mirror method or directly into the mirror method, regulate injection pressure and speed, keeping gets a clear view is advisable, in case move or pour renal pelvis on the calculus, slowly advance, direct reach the calculus place.Degree according toureter 201 expansions, select quite theconduit 100 of size for use or the great circle of spiral coil web-like structure is wiped out, the diameter of theureter 201 that makes it and expand is suitable,conduit 100 is pushing and pressingcalculus 202 underseal wire 301 guiding, be close to boundary sign thatcalculus 202 edges upwards are inserted into the spiral coil web-like structure ofconduit 100 and linear conduit by calculus, makeconduit 100 have asection 110 of spiral coil web-like structure and be positioned atcalculus 202 near-ends.As bycalculus 202 difficulties, can be close to calculus 202 edges with holmium laser or air pressure trajectory earlier, be " worm bites " sample rubble, make between itself and the ureter wall and produce a slight void, and then through seal wire insertion spiral head conduit.Withdraw from seal wire, asection 110 ofconduit 100 spirals and is curled into spiral coil web-like structure in theurethra 201 of expansion, stopcalculus 202 on move.Insert the fine stone feeler lever (fine stone feeler lever and 3F spiral head conduit can in the wolf8.0/9.8F of single tract ureter hard mirror operate simultaneously) of holmium laser fiber or 0.8mm through the ureteroscope operating cavity, with original position calculus rubble to diameter 2mm.Use bigger rubble feeler lever or lithotomy forceps as need, behind successful inlyingcatheter 100, withdraw from ureteroscope earlier, insert ureteroscope once more onconduit 100 sides and carry out rubble.At this moment, because of the drainage ofconduit 100, the visual field is more clear,, also can wash throughconduit 100 if needed.Rubble finishes to withdraw fromconduit 100 and ureteroscope under the direct-view of back.Becauseconduit 100 has characteristics such as quality softness, good springiness, smooth surface, the spiral coil web-like structure whenconduit 100 withdraws from is pulled out in ureteroscope side or mirror gradually smoothly.The conventional double J pipe (two pigtail conduit) of keeping somewhere of postoperative, 2-4 pulls out after week.Simultaneously also in view of the good material behavior of thisconduit 100, the patient little to damage in the Rhizoma Atractylodis Macrocephalae, that operating time short, the calculus volume is little, postoperative can directly be made thisconduit 100 stent drainage effective (traditional ureter support arm drain before being equivalent to), conduit 100 external parts insert sterile bag, andconduit 100 postoperatives were pulled out in 7 days.And do not need to keep somewhere again double J pipe (two pigtail conduit), and shortened operating time, and postoperative can pull out smoothly external, do not need under cystoscope, to pull out again, obviously reduced patient's misery and expense.Conduit 100 spirals at the intracavity ofureter 201 of expansion, and because of it has between onesection 110 in numerous side openings and the curling conduit, all have minim gap betweenconduit 100 and the ureter wall, drainage effect isunaffected.Conduit 100 indwelling times short (7 days) can not form the secondary calculus yet.

More than a kind of ureter spiral head conduit that this utility model embodiment is provided be described in detail, for one of ordinary skill in the art, thought according to this utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.

Claims (6)

1. ureter spiral head pipe guide, it is characterized in that, comprise: a polyurethane catheter, described polyurethane catheter comprises two sections, described polyurethane catheter is the hollow conduit structure of both ends open, one section is helical coil round structure from small to large, and the long section of another of described polyurethane catheter is a straight tube.

2. ureter spiral head pipe guide according to claim 1, it is characterized in that, one section point of interface with another section of described polyurethane catheter is the spiral starting end, an other end of one section of described polyurethane catheter is an outermost end, and described helical coil round structure becomes big gradually from described spiral starting end to described outermost end.

3. ureter spiral head pipe guide according to claim 1 is characterized in that the girth of described polyurethane catheter is 3fr length 75cm.

4. as ureter spiral head pipe guide as described in the claim 2, it is characterized in that, be close between the circle of described helical coil round structure and the circle.

5. as ureter spiral head pipe guide as described in the claim 4, it is characterized in that, be provided with side opening from the spiral outermost end of described polyurethane catheter, the tube wall of described polyurethane catheter, the 1cm of being separated by between each side opening, until the 25cm place of the long section of another of described polyurethane catheter, and adjacent two side holes is not or not same plane.

6. as ureter spiral head pipe guide as described in the claim 5, it is characterized in that the described polyurethane catheter surface 5cm of whenever being separated by is provided with length scale sign, and is provided with the scale sign at the spiral starting end of described polyurethane catheter.

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