CN2577774Y

CN2577774Y - Electric urinary lithotriptor

Info

Publication number: CN2577774Y
Application number: CN 02260819
Authority: CN
Inventors: 孙颖浩; 廖国强; 杨庆; 王林辉; 许传亮; 高旭
Original assignee: Second Military Medical University SMMU
Current assignee: Second Military Medical University SMMU
Priority date: 2002-10-21
Filing date: 2002-10-21
Publication date: 2003-10-08
Anticipated expiration: 2012-10-21

Abstract

The utility model relates to an electric urinary stone crusher. The utility model comprises a pulse current generator (1), a gun body (2), and a firing pin (3), wherein, the gun body is composed of a casing (2.1), fixed iron cores (2.2), a movable core (2.3), a fixed iron core fixing ring (2.4), a movable iron core fixing ring (2.5), and two groups of reversed phase wire packages (2.6) which are wound on the outer margins of the fixed iron cores; the fixed iron cores (2.2) are hollow, are divided into three sets and are wound with two sets of wire packages, and the phase difference between the line packages is 180 DEG; the fixed iron cores are fixed on the casing of the gun body by the fixed iron core fixing ring (2.4); the movable iron core is a solid cylinder magnetizer, penetrating the center of the inner cavity of each fixed iron core, both ends of the movable iron core penetrate through the central hole of the movable iron core fixing ring (2.5) which is fixed on the casing, and the end of the movable iron core is provided with an external thread (2.7); the connection part (3.1) of the firing pin (3) is provided with an internal thread which is matched with the external thread (2.7) of the movable iron core, so that the mount of the gun body becomes convenient; the top end (3.2) of the firing pin forms a projection in a cross-shaped plum blossom shape. The utility model has the advantages of low price, convenient operation, and portability.

Description

The electronic lithotrite of urinary tract

Technical field: this utility model relates to technical field of medical instruments, is a kind of electronic lithotrite of urinary tract for the treatment of urinary system calculus.

Background technology: urinary system calculus is commonly encountered diseases, frequently-occurring disease.Intracavity rubble through endoscope is extensive in the Urology Surgery clinical practice.

The lithotrite of domestic and international application has pneumatic ballistic lithotriptor, laser lithotripsy machine, electrohydraulic lithotripsy machine, ultrasonic lithotrite etc. at present.In the process of clinical application, per urethra is inserted after the endoscope on the basis of direct-view calculus, inserts the energy conduction device through the operating cavity of endoscope, and calculus is progressively pulverized.Lithotrite is easy to use, definite effect.Yet find to exist following deficiency in process of clinical application: 1. equipment needs import, energy generating apparatus cost height, costs an arm and a leg, and has limited the extensive use of lithotrite; 2. weight of equipment and volume are big, and inconvenience is carried and used.

Summary of the invention: this utility model provides that a kind of price is low, volume is little, the easy to use and electronic lithotrite that carries.

This utility model comprises pulse current generating device, rifle body and striker three parts.For ease of narration, introduce accompanying drawing earlier.

Description of drawings: Fig. 1 is an entire combination structural representation of the present utility model;

Fig. 2 is this utility model rifle body sectional structure sketch map;

Fig. 3 is this utility model striker structure sketch map.

Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail.

The utility model is made up of pulse current generating device 1, rifle body 2 and striker 3. Pulse current generating device is by electricity Line links to each other with the rifle body, and the rifle body is fixed by shell 2.1, fixed core 2.2, moving iron core 2.3, fixed core retainer plate 2.4, moving iron core Ring 2.5 and be looped around the anti-phase line bags 2.6 of two groups of fixed core outer rim and form. Fixed core 2.2 is hollow cylindrical, divides three groups, Every group of fixed core is outer around 2.6, two groups of line bags of two groups of line bags phase difference, 180 degree (winding direction differs from 180 degree), synchronous line Bag links to each other; Fixed core retainer plate 2.4 firmly is fixed in rifle body case 2.1 with fixed core; Moving iron core 2.3 is a solid cylinder The shape magnetic conductor is worn and is passed through in fixed core inner chamber central authorities, and two ends are through the medium pore of the moving iron core retainer ring 2.5 that is fixed in shell, The diameter of moving iron core and this medium pore diameter coupling, so that axial reciprocating moves, the end that moving iron core stretches out the rifle body case is provided with External screw thread 2.7; Striker 3 tail ends are connecting portion 3.1, are provided with internal thread, and the external screw thread 2.7 of itself and moving iron core front end is complementary, In order to by screw thread striker is installed on the rifle body. Striker top 3.2 is cross plum blossom-shaped projection.

During clinical use, striker is inserted to position, calculus place, when pulse current generating device is transported to the line bag by electric wire with pulse current, two groups of line packet interleaving energising work, because magneticaction makes iron core produce axially rectilinear motion back and forth, drive striker and produce impact, the vertical Flos Mume shape of striker projection can make striker to the abundant effectively impulsive force of calculus performance, thereby reaches the purpose of crushed stone.Through clinic trial, lithotrity effect is splendid.

This utility model is cheap, and is in light weight, volume is little, easy to use and carry.

The specific embodiment:

Embodiment 1:

The pulse current generating device that this utility model adopts can directly be purchased from market, as select Medical Instruments company of Shanghai Boke product for use, volume 25cm * 25cm * 28cm, the complete machine net weight is 8Kg only, pulse current occurrence frequency, intensity are adjustable within the specific limits, panel shows pulse frequency and frequency, and back pin is stepped on switch, is convenient to the patient and grasps and operate.The long 20cm of rifle body case, external diameter 4cm, the long 4.5cm of fixed core, external diameter 3cm, internal diameter 2cm, the moving long 21cm of iron core, diameter 0.8cm, moving iron core ring is slightly larger than moving iron core diameter at mesopore, and the composition surface is coated with estersil to reduce frictional force and cooling, is convenient to moving iron core and reciprocatingly slides.Striker diameter and length can be answered clinical requirement and be decided, and striker can reach 2.78 times/second in the instantaneous axis speed that impact stroke finishes, and axial line projecting direction impulsive force can reach 60N.

Claims

1, the electronic lithotrite of a kind of urinary tract, comprise energy generating apparatus and striker, it is characterized in that energy generating apparatus comprises pulse current generating device (1) and rifle body (2), rifle body (2) is by shell (2.1), fixed core (2.2), moving iron core (2.3), fixed core ring for fixing (2.4), moving iron core retainer ring (2.5) and the two groups of anti-phase line bags (2.6) that are looped around the fixed core outer rim are formed, fixed core (2.2) is hollow cylindrical, outward around two groups of line bags (2.6), two groups of line bag phase contrast 180 degree, fixed core ring for fixing (2.4) is fixed in rifle body case (2.1) with fixed core, moving iron core (2.3) is a solid cylindrical magnetic conductor, through fixed core inner chamber central authorities, two ends are through the medium pore of the moving iron core retainer ring (2.5) that is fixed in shell, the diameter of moving iron core and this medium pore diameter coupling, the end that moving iron core stretches out the rifle body case is provided with external screw thread (2.7); Striker (3) tail end is connecting portion (3.1), is provided with female thread, and the external screw thread (2.7) of itself and moving iron core front end is complementary.

2, by the electronic lithotrite of the described urinary tract of claim 1, it is characterized in that described fixed core divides three groups, each group outer around the line bag press same phase continuous.

3, by claim 1 or the electronic lithotrite of 2 described urinary tracts, it is characterized in that the top (3.2) of striker (3) is cross Flos Mume shape projection.