Disposable puncture device
Technical field
This utility model relates to a kind of disposable puncture device, and it mainly is applicable to the abdominal paracentesis to patient, so that check and operation.
Background technology
In the prior art, the medical thrust device is made up of puncture needle and epitheca, puncture needle is positioned at epitheca, puncture needle comprises blade, tabletting, cutter window spare, internal core rod, motion bar, sliding seat and bonnet, epitheca comprises outer tube, water valve, main body, seal receptacle, diaphragm seal, sealing member and preceding seal cover, back seal cover, and on bonnet, be equipped with the hole, so that assembling; Because steel spring plate, knob are not set for it and by torsion spring, so structural design is reasonable inadequately, punching causes profile not attractive in appearance on the bonnet, assembling is inconvenient.
The utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and a kind of reasonable in design is provided, assembles simple disposable puncture device.
This utility model solves the above-mentioned technical scheme that technical problem adopted: this disposable puncture device is made up of puncture needle and epitheca, puncture needle is positioned at epitheca, puncture needle comprises blade, tabletting, cutter window spare, internal core rod, motion bar, sliding seat and bonnet, epitheca comprises outer tube, water valve, main body, seal receptacle, diaphragm seal, sealing member and preceding seal cover, back seal cover, it is characterized in that: also be provided with steel spring plate, knob and press torsion spring, described steel spring plate is fixed on the sliding seat, knob is positioned at sliding seat, is arranged between bonnet and the knob by torsion spring; Have elongated slot on described internal core rod, and be provided with the boss that fuses with internal core rod on internal core rod, this boss matches with groove on the bonnet.
This utility model compared with prior art has the following advantages and effect: reasonable in design, assembling is simple, and good looking appearance.
Description of drawings
Fig. 1 is an overall structure cross-sectional schematic of the present utility model.
Fig. 2 is a front portion structure sketch map of the present utility model.
Fig. 3 is a rear structure sketch map of the present utility model.
The specific embodiment
Referring to Fig. 1-Fig. 3, this utility model is made up of puncture needle I and epitheca II, and puncture needle I is positioned at epitheca II.
Puncture needle I of the present utility model comprises blade 1, tabletting 2, cutter window spare 3, internal core rod 5, bonnet 6, motion bar 7 and sliding seat 8.Wherein: blade 1 is fixing with internal core rod 5, and tabletting 2 is fixedly pushed down blade 1 with motion bar 7, cutter window spare 3 and motion bar 7 clampings, and internal core rod 5 is fixing with bonnet 6 by the boss on the bonnet 6 52, sliding seat 8 and bonnet 6 clampings.
Epitheca II of the present utility model comprises outer tube 4, water valve 9, main body 10, seal receptacle 11, diaphragm seal 12, sealing member 13, preceding seal cover 14, dial and turn round 15 and back seal cover 16, wherein: outer tube 4 is provided with external screw thread 41, it and outer tube 4 fuse, anti-skidding after being used to puncture; Water valve 9 is bonding with main body 10, seal receptacle 11 and main body 10 welding, diaphragm seal 12 is between back seal cover 16 and seal receptacle 11, sealing member 13 is positioned at seal receptacle 11, preceding seal cover 14 is fixed on the seal receptacle 11, dial and to turn round 15 and be fixed on the main body 10 and with preceding seal cover 14 and link to each other, back seal cover 16 and seal receptacle 11 weld.20 is spring.
This utility model also is provided with steel spring plate 17, knob 18 and by torsion spring 19, steel spring plate 17 is fixed on the sliding seat 8, and knob 18 is positioned at sliding seat 8, is arranged between bonnet 6 and the knob 18 by torsion spring 19; In addition, also have elongated slot 51 on internal core rod 5, and be provided with the boss 52 that fuses with internal core rod 5 on internal core rod 5, this boss 52 matches with groove 61 on the bonnet 6.
During use, puncture needle I is entered epitheca II by diaphragm seal 12, and pass through the extruding of puncture needle I and epitheca II, compression knob 18 can move forward motion bar 7, exposes blade 1, can puncture to patient.If puncture needle I and epitheca II do not unclamp, can not puncture once more; Only unclamp knob 18, just can carry out the work second time.
In addition, if desired patient's abdominal cavity is checked or observe, can in epitheca II, penetrate medical apparatus and instruments such as endoscope; To the treatment that undergos surgery of patient's abdominal cavity, then can in epitheca II, penetrate operating theater instruments equally if desired.In addition, also can wash patient's abdominal cavity by epitheca II, or the like.