CN201668473U

CN201668473U - Percutaneous nephrolithotomy puncture needle trocar apparatus

Info

Publication number: CN201668473U
Application number: CN2010202190205U
Authority: CN
Inventors: 许云飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-08
Filing date: 2010-06-08
Publication date: 2010-12-15
Anticipated expiration: 2020-06-08

Abstract

The utility model discloses a percutaneous nephrolithotomy puncture needle trocar apparatus. The utility model herein comprises a tube body, a tube filler, a hollow puncture needle, the central section of the tube filler configured in the shape of a cross push rod, a metal seal wire, three intubations and casings, wherein the bore of the protruding at the front end of the tube body is provided with a guiding tube, the other end of the guiding tube being inserted to the shaft hole of the tube filler, the tube filler having one end which is inside the tube body provided with a sealing ring on the outer rim of the end, the handle side of the tube filler being provided with a flexible sealing member with holes. The utility model can detect whether the puncture reaches the intended position by slightly pulling outward the tube filler and subsequently observing whether there is urine in the tube body. The utility model can thus reduce liquid flow difficulty caused by insufficient renal pelvis pressure and make it easy to clarify puncture point position. The hollow puncture needle and the intubations and casings all have scales, which can be easily remembered upon replacement, so that the expansion of the subsequent channels will not be too shallow or too deep. The utility model has the advantages of simple structure, utility, convenient usage and flexibility.

Description

PCN Puncture needle sleeve needle device

Technical field:

This utility model relates to a kind ofly to be failed medium in the intravital apparatus of input, or conversion in-vivo medium or take out the apparatus of medium in the body, more specifically to a kind of PCN paracentesis trocar device.

Background technology:

Lithangiuria is one of common disease of Urology Surgery, and traditional open surgery damage is big, and the patient recovers slowly, and along with the development of chamber mirror technology, traditional open surgery of PCN art and the replacement of ureteroscope technology.The key of PCN art at first is to set up the passage of percutaneous to renal pelvis, and the foundation of passage is to be related to the operation key of success.And the clinical the most frequently used suit of setting up puncture channel comprises: in clinical treatment to renal calculus, often adopt puncture method in advance at skin, kidney fistulation, then utilize special endoscope and rubble, get stone equipment and finish treatment.The used paracentesis trocar device of puncture method is made up of paracentesis trocar, expanded casing, paracentesis trocar is made up of solid interior pin of puncture and outer casing needle again, earlier with paracentesis trocar puncture location, extracts interior pin earlier after putting in place substantially during operation, observing urine has the outflow of denying to determine whether to put in place, otherwise needs puncture again.Traditional paracentesis trocar is the 18G trocar, and quality is softer, and is flexible during puncture, often loses needle track under the B ultrasonic guiding, causes puncture failure; And the puncture needle back do not have pumping equipment, often is punctured to renal pelvis but because renal pelvis pressure is not enough, liquid can not flow out in the renal pelvis, causes confirming whether success of puncture; Must extract nook closing member after this trocar just punctures, just can see whether having liquid to flow out, often in extracting the nook closing member process, to cause puncture needle to skid off and cause puncture failure, finally cause passage to set up failure.The weak point of this paracentesis trocar device is paracentesis trocar and puts pipe-in-pipe and all be not provided with scale, can't determine the optimum position of puncturing; In addition, take out puncture solid in pin and changing in the telescopic process very easily be shifted or offset direction, cause puncture failure, bring misery to the patient.

The utility model content:

The purpose of this utility model is to provide a kind of simple in structure, easy to operate, safe and reliable PCN paracentesis trocar device at the prior art weak point.

The purpose of this utility model is to realize by following measure: a kind of PCN paracentesis trocar device, it comprises that cylindrical shell, tube core, hollow puncture needle, cross section, tube core middle part are cross push rod, wire guide, its special character is to also have some pipe-in-pipe of putting; The protruding endoporus of described barrel front end breast is equipped with guide pipe, and the guide pipe other end inserts in the tube mandrel hole, and described tube core inserts cylindrical shell end outer rim sealing ring is installed, and tube core handle side is equipped with the flexible seals that contains the hole.

Described some pipe-in-pipe of putting are 3, and the described pipe-in-pipe internal diameter of respectively putting is greater than the wire guide external diameter, and secondary cover external diameter of pipe is greater than elementary cover external diameter of pipe, and level cover external diameter of pipe is greater than secondary cover external diameter of pipe once more.

Described hollow puncture needle appearance is carved with scale.

The described pipe-in-pipe appearance of putting is carved with scale.

Described tube core handle end face is concave arc shape.

Compared with prior art, the PCN that the utility model proposes has following advantage with the Puncture needle sleeve needle device: 1) whether when puncture only needs a little pumpback tube core inspection section intracoelomic cavity to have not urine puncture as can be known to put in place, reduce because the liquid that the renal pelvis insufficient pressure causes flows out difficulty, easier clear and definite point of puncture position; 2) hollow puncture needle and put pipe-in-pipe scale is all arranged only need remember during replacement that scale gets final product, and can not cross shallow or dark excessively when making the further channel expansion; 3) puncture location back only needs to insert from the hole of tube core handle end face wire guide and enters the endoporus of hollow puncture needle smoothly through guide pipe, can extract puncture needle after wire guide puts in place, introduces then and puts pipe-in-pipe, can not be offset.4) puncture needle is not flexible, and needle track is clear under B ultrasonic, recognizes puncture position easily; 5) this utility model is simple in structure, practical, easy to use, flexible.

Description of drawings:

Fig. 1 is this utility model embodiment syringe cylinder structure longitudinal cross-section sketch map.

The specific embodiment:

Below in conjunction with accompanying drawing the specific embodiment is elaborated:

Fig. 1 has provided this utility model example structure longitudinal cross-section sketch map.A kind of PCN puncture suit, it comprises: cylindrical shell 1, tube core 2, hollow puncture needle 3, cross section, tube core middle part are the cross push rod, put pipe-in-pipe.Wherein, putting pipe-in-pipe is prior art, and the quantity of putting pipe-in-pipe is 3, does not provide among the figure.Among the figure, protruding 8 endoporus of cylindrical shell 1 front end breast are equipped with guide pipe 4, and guide pipe 4 other ends insert in tube core 2 axis holes, and described tube core 2 inserts cylindrical shell end outer rim sealing ring 5 is installed, and tube core 2 handle side are equipped with the flexible seals 6 that contains the hole.Sealing ring 5 and the flexible seals 6 that contains the hole guarantee that a core forms vacuum chamber during pumpback in cylindrical shell in cylindrical shell, the hole that contains the flexible seals 6 in hole is used for the insertion of back, puncture needle location wire guide, flexible seals has elasticity under normal conditions, the hole is shunk the formation that is beneficial to vacuum chamber.

This utility model is further taked following measure: described hollow puncture needle appearance is carved with scale 9, and the described pipe-in-pipe appearance of putting is carved with scale, and the location when graduated setting is beneficial to more hyperphoric pipe-in-pipe is put pipe-in-pipe and known for this area professional, so do not provide.Described tube core 4 handle end faces 7 are concave arc shape, coincide with referring to the face shape, meet ergonomics.

The foregoing description does not constitute restriction of the present utility model, and all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.

Claims

1. PCN paracentesis trocar device, it comprises that cylindrical shell, tube core, hollow puncture needle, a cross section, tube core middle part are cross push rod, wire guide, is characterized in that also having some pipe-in-pipe of putting; The protruding endoporus of described barrel front end breast is equipped with guide pipe, and the guide pipe other end inserts in the tube mandrel hole, and described tube core inserts cylindrical shell end outer rim sealing ring is installed, and tube core handle side is equipped with the flexible seals that contains the hole.

2. PCN paracentesis trocar device according to claim 1, it is characterized in that described some pipe-in-pipe of putting are 3, the described pipe-in-pipe internal diameter of respectively putting is greater than the wire guide external diameter, and secondary cover external diameter of pipe is greater than elementary cover external diameter of pipe, and level cover external diameter of pipe is greater than secondary cover external diameter of pipe once more.

3. PCN paracentesis trocar device according to claim 1 and 2 is characterized in that described hollow puncture needle appearance is carved with scale.

4. PCN paracentesis trocar device according to claim 1 and 2 is characterized in that the described pipe-in-pipe appearance of putting is carved with scale.

5. PCN paracentesis trocar device according to claim 3 is characterized in that the described pipe-in-pipe appearance of putting is carved with scale.

6. PCN paracentesis trocar device according to claim 1 and 2 is characterized in that described tube core handle end face is concave arc shape.