CN201431693Y

CN201431693Y - Percutaneous renal passage dilator

Info

Publication number: CN201431693Y
Application number: CN2009200871011U
Authority: CN
Inventors: 罗洪波
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-03
Filing date: 2009-07-03
Publication date: 2010-03-31
Anticipated expiration: 2019-07-03

Abstract

The utility model relates to a percutaneous renal passage dilator, which comprises a plurality of single-root dilators. Each single-root dilator comprises an outer cavity and a guide wire passage (4)in the outer cavity; the diameters of the outer cavities of the single-root dilators increase in sequence; each outer cavity comprises a front part (1), a body part (2) and a tail part (3) from the front end to the tail end; the front part (1) of the single-root dilator with a smaller-diameter outer cavity takes the shape of a cone; the front part (1) of the single-root dilator with a larger- diameter outer cavity takes the shape of a hemisphere; and along with the increase of the diameters of the outer cavities, the lengths of the front parts (1) of the single-root dilators are gradually shortened. The percutaneous renal passage dilator has the advantages that the structure is simple; when in use, the renal parenchyma can be fully dilated, and synchronously, exotheca can be retained in aproper position; and the disadvantages of the various traditional dilators that the dilatation is difficult, the price is high, the renal parenchyma passage cannot be fully expanded, and the exothecacannot be smoothly retained in the proper position are overcome.

Description

Percutaneous kidney tunnel dilator

Technical field

This utility model relates to operating theater instruments, particularly relates to a kind of tunnel dilator.

Background technology

Set up a kind of effective operation method that percutaneous kidney passage is the treatment urologic disease by puncture, expansion, be widely used in the foundation of skin kidney passage in the PCN rubble lithotomy at present, and the percutaneous kidney drainage of disease such as hydronephrosis due to the urinary tract obstruction.The dilator of current use is divided into three kinds of metal dilator, semihard elastic dilatation device and balloon catheter dilators etc. according to the difference of material.Dilator relatively more commonly used clinically at present has the single dilator that belongs to semihard elastic dilatation device and belongs to the into formula dilator that changes of metal dilator, and the balloon catheter dilator is because the seldom use clinically that costs an arm and a leg.Change formula dilator into because first dilator most advanced and sophisticated spherical in shape is difficult for by scar tissue, and the expansion effort is difficult for the assurance depth, often will unite use with single dilator.Single dilator is extensive use of clinically, but because the deficiency in the design, abundant expanding channel often, and epitheca is retained in correct position synchronously smoothly.Particularly when no hydrops kidney surgery is set up passage, deficiency in this design usually causes epitheca cutting excess of the kidney matter when keeping somewhere epitheca and causes massive hemorrhage, or owing to expanding excess of the kidney matter or the renal pelvis that damages puncture expansion offside deeply, cause massive hemorrhage or urinary extravasation, finally may cause operative failure.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of percutaneous kidney tunnel dilator is provided, and this dilator is at the defective in the existing single dilator design, makes its fully expanding channel and epitheca is retained in correct position synchronously smoothly through redesign.

The technical scheme that its technical problem that solves this utility model adopts is: comprise a plurality of single dilators, each single dilator comprises the silk guide passage of exocoel and exocoel inside, and the exocoel diameter of single dilator increases successively.Exocoel comprises front portion, body and afterbody successively from the front end to the tail end, the single dilator that the exocoel diameter is less, and the front portion is conical, the single dilator that the exocoel diameter is bigger, the front portion is a hemispherical.Along with the increase of exocoel diameter, the forward length of single dilator shortens gradually.

Advantage of the present utility model: solved fully nephrectasia essence passage and epitheca is retained in smoothly the drawback of correct position of single in the past dilator; Epitheca cuts excess of the kidney matter when having avoided keeping somewhere epitheca in the operation, or damages puncture the excess of the kidney matter or the renal pelvis of expansion offside deeply owing to expanding, and causes the operation risk of massive hemorrhage or urinary extravasation.This utility model is simple in structure, can be used for the foundation of skin kidney passage in the PCN rubble lithotomy, and the percutaneous kidney drainage of disease such as hydronephrosis due to the urinary tract obstruction.

Description of drawings

Fig. 1 is an example structure sketch map of the present utility model.

A, B, C, D, E represent single dilator successively 1～No. 5.

Fig. 2～Fig. 6 is followed successively by the expansion of 1～No. 5 single dilator of the present utility model and keeps somewhere the epitheca sketch map.

Fig. 7～Figure 11 is followed successively by the expansion and the indwelling epitheca sketch map of 1～No. 5 single dilator of prior art.

The specific embodiment

Design principle of the present utility model: the front portion 1 of single dilator is become different taper shape or hemispherical tips according to its specifications design.The conical tip of its front portion 1 of single dilator of small dimension is more elongated, and along with the increase of dilator bore, the conical tip of its front portion 1 chap gradually shortens, and is hemispherical until the front portion 1 of thicker single dilator.Epitheca 5 can be consistent with thicker dilator bore, in conjunction with close, have only the hemispherical front portion 1 of dilator to expose, thereby make excess of the kidney matter 8 fully be expanded and can keep somewhere epitheca 5 synchronously, solved fully nephrectasia essence passage 9 and epitheca 5 is retained in smoothly the drawback of correct position of single in the past dilator at correct position.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.

As shown in Figure 1, percutaneous kidney tunnel dilator comprises a plurality of single dilators, and each single dilator comprises the silk guide passage 4 of exocoel and exocoel inside.The exocoel diameter of single dilator increases successively, and exocoel comprises front portion 1, body 2 and afterbody 3 successively from the front end to the tail end.The single dilator that the exocoel diameter is less, anterior 1 is conical; The single dilator that the exocoel diameter is bigger, anterior 1 is hemispherical.Along with the increase of exocoel diameter, the length of the front portion 1 of single dilator shortens gradually.

Anterior 1 is hemispheric single dilator, and its exocoel outside also is enclosed with the epitheca 5 of respective diameters, and the length of epitheca 5 is consistent with the length of body 2.

Embodiment: percutaneous kidney tunnel dilator comprises 5 single dilators, and the exocoel diameter of No. 1～No. 5 single dilators increases successively, and it is conical that the front portion 1 of 1～No. 4 single dilator is, and the front portion 1 of No. 5 single dilators is hemispherical.

The single dilator of prior art also has 5, and the exocoel diameter increases successively.With Fig. 2 and Fig. 7 contrast, Fig. 3 and Fig. 8 contrast respectively ... Fig. 6 and Figure 11 contrast, as seen except No. 1 single dilator, the length of the front end 1 of remaining single dilator of this utility model all shortens to some extent, and the front end 1 of No. 5 single dilators also replaces to hemispherical with taper shape.

Concrete use of the present utility model is: when puncture successfully, after seal wire 10 inserts kidney success, under the seal wire guiding, 1～No. 5 single dilator from the exocoel diameter less begin expansion.As shown in Figure 2, calculus 6 is positioned at renal pelvis 7, renal pelvis 7 no obvious hydrops, and dilator expands in the excess of the kidney matter 8, forms passage 9.Fig. 3, Fig. 4,2～No. 4 single dilators shown in Figure 5 are expanded gradually.After No. 5 single dilators when the corresponding specification of last root shown in Figure 6 expanded kidney, excess of the kidney matter passage 9 was fully expanded and can be kept somewhere corresponding epitheca 5 synchronously smoothly in renal pelvis 7, and the binding site of its epitheca 5 front ends and renal pelvis 7 is 11.This utility model avoided single in the past dilator expansion to set up in the skin kidney passage process, and fully expanding channel 9, and epitheca 5 can not be inserted the problem that puts in place synchronously.To shown in Figure 11, use existing single dilator as Fig. 7, excess of the kidney matter 8 can not fully be expanded near the part passage 12 of renal pelvis 7, and epitheca 5 can not be retained in the renal pelvis 7 synchronously.As shown in figure 11, the front position of epitheca 5 is 13, still is positioned at excess of the kidney matter 8.As need epitheca 5 is inserted in the renal pelvis 7, then have the situation of epitheca 5 cutting excess of the kidney matter 8, or because single dilator anterior 1 expands the excess of the kidney matter 8 or the renal pelvis 7 of going into dark damage puncture expansion offside, thereby the possibility of massive hemorrhage or urinary extravasation caused.

Claims

1. percutaneous kidney tunnel dilator, comprise a plurality of single dilators, each single dilator comprises the silk guide passage (4) of exocoel and exocoel inside, the exocoel diameter of single dilator increases successively, exocoel comprises front portion (1), body (2) and afterbody (3) successively from the front end to the tail end, it is characterized in that: the single dilator that the exocoel diameter is less, anterior (1) are conical, the single dilator that the exocoel diameter is bigger, anterior (1) is hemispherical; Along with the increase of exocoel diameter, the length of the front portion of single dilator (1) shortens gradually.

2. percutaneous kidney tunnel dilator as claimed in claim 1 is characterized in that: anterior (1) is hemispheric single dilator, and its exocoel outside also is enclosed with the epitheca (5) of respective diameters, and the length of epitheca (5) is consistent with the length of body (2).

3. percutaneous kidney tunnel dilator as claimed in claim 1 or 2, it is characterized in that: comprise 5 single dilators, the exocoel diameter of No. 1～No. 5 single dilators increases successively, and the front portion of 1～No. 4 single dilator (1) is conical, and the front portion of No. 5 single dilators (1) is hemispherical.