A kind of transfusion needleTechnical field
The present invention relates to medical instruments field, be specifically related to a kind of transfusion needle, this product is exclusively used in the connection transfusion and blood transfusion being furnished with puncture type connector product and uses.
Background technology
We are in the long-term observation of clinical process and experiment, find that being connected the utensil of infusing with the transfusion such as remaining needle, central venous catheter with indwelling tool in current clinical transfusion does not have actual to produce in batches and can the special implement that uses of practical operation so far.And existing disclosed technical scheme is due to structure or technological problems, production difficulty and operating characteristics defect cause product to be difficult to practical application and popularization.The defect of existing product and technology is:
1., after existing transfusion needle docks with the puncture type connector of indwelling apparatus, protection or fixture, unsettledly can not connect, can only be fixed on the limbs of people.
2., after existing transfusion needle docks with the puncture type connector of indwelling apparatus, transfusion needle stand and puncture type connector can not firmly be fixed by adhesive tape, make transfusion needle root easily be subject to breaking force, occur bent needle phenomenon.
3. adhesive tape is fixed, and one is cause needs of patients to accept more adhesive tape sticking, and irritated probability also may be caused to increase, and another is that operation is cumbersome.
4. existing non-security and safety transfusion needle is unreliable, can not accidental needle sticks be avoided completely to hinder in operation.
5. existing secure private transfusion needle technology can not puncture the different position of puncture type connector transfusion end face.
6. existing transfusion needle draw point is angle minute hand, easy bent needle and needle point encounters infusion set in connection procedure sidewall makes needle point barb, and occurs damage puncture type connector sealing member.
7. existing safety transfusion needle can not be connected with the puncture type connector on Y type remaining needle.
8. we find in clinical investigation, existing Transfusion needle pipe needle point is angle pin, when connecting transfusion for remaining needle, its drawback is: it is when puncturing puncture type connector, puncture orifice is a line, needle tubing enters after strutting, and its opening is positioned at pinpoint inclined plane, like this puncture easily by puncture line and neighbouring various materials comprise microorganism, various microgranule and various organic or inorganic thing and bring in transfusion device system, nosocomial infection and other harm may be there is.
Summary of the invention
The object of this invention is to provide a kind of simple and reasonable, simple process easily manufactures, have the hand-held handle of column, have fixing and support zone, have draw point sheath that the anti-pricking wound of substantial length of operation can expand outwardly, the puncture type connector that can puncture puncture end face different parts, can unsettled use, can with on Y type remaining needle, the puncture type connector dedicated transfusion pin that nosocomial infection and other materials enter the harm in human vas can be reduced, to solve the problem that existing clinical puncture type connector does not have the special connection transfusion needle of safety.
In order to solve these problems of the prior art, technical scheme provided by the invention is: comprise the transfusion catheter that draw point, draw point holder, draw point sheath and draw point holder rear end connect, it is characterized in that, draw point sheath two ends can be punctured formula connector puncture end face and insert.
Before above-mentioned " draw point sheath two ends can be punctured formula connector puncture end face and insert " refers to independently fixing assembling or force the architectural feature of the draw point sheath after complete separation.
Under more excellent enforcement state, described draw point holder profile is convex or column.
Under more excellent enforcement state, described draw point sheath one end and draw point holder are fixed by socket.
Above-mentioned " draw point sheath one end and draw point holder are fixed by socket " can be draw point sheath be socketed with partly or completely draw point holder, directly can be socketed and the binding agents such as glue or fixed mechanism also can be used to fix.
Under more excellent enforcement state, described draw point sheath sidewall there is opening.
Above-mentioned " opening " is that one section of continuous print is from top to bottom and/or by left-to-right gap or breach.
Under more excellent enforcement state, described draw point sheath is flexible plastic pipe.
Under more excellent enforcement state, described draw point sheath have at least partial sidewall can away from or close to draw point sheath axis.
Under more excellent enforcement state, described puncture type connector longitudinally inserts after in draw point sheath, and puncture type connector has the shifted laterally space of 0.5 ~ 3 millimeter in draw point sheath.
Described above is state when limiting without draw point.
Under more excellent enforcement state, described draw point sheath can hold the cross section puncture type connector larger than its lumenal cross-section.
Under more excellent enforcement state, draw point length is no more than 3/4 of puncture type connector length.
Under more excellent enforcement state, described draw point is provided with cone tip, and infusion hole is positioned on the needle tubing sidewall at cone tip trailing edge rear.
Compared to solution of the prior art, advantage of the present invention is:
1. the present invention, can connect by the puncture type connector different from different manufacturers external diameter, also can allow transfusion needle puncture puncture type connector puncture end face different parts.The draw point sheath holding puncture type connector not only can the anti-acupuncture of substantial length of operation but also can be simplified to fix mode, only by fastening for draw point sheath just passable.
2., after dedicated transfusion pin of the present invention is connected with puncture type connector, holds owing to there being draw point sheath and cover puncture type connector, make both become to be integrated, avoid bent needle.
3. dedicated transfusion pin of the present invention, has style handle (needle stand), handled easily, also convenient infuse to hold with the puncture type connector of column be connected and be easy to fixing.
4. because the present invention is rational in infrastructure, simple and common process can be used to produce, such as draw point is bonding, silication etc., applicable large-scale production and popularization.
5. unsettledly can use after connecting, avoid adhesive tape to fix the allergic phenomena that may occur.
6. the transfusion needle draw point hour hand side opening of this patent, not easily bent needle and sidewall that not easily needle point encounters infusion set in connection procedure making needle point barb, and occur damage puncture type connector sealing member, is exactly avoid exfoliation to produce in addition.
7. can be connected with the puncture type connector on Y type remaining needle.
8. reduce the microorganism entered in transfusion system, minimizing nosocomial infection and other materials enter the harm in human vas.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Accompanying drawing 1 is the structural representation of the embodiment of the present invention;
Accompanying drawing 2 is the structural representation of further embodiment of this invention;
Numerical reference described in figure is expressed as: 1, draw point sheath; 2, draw point; 3, draw point holder; 4, transfusion catheter.
Detailed description of the invention
Embodiment one: shown in accompanying drawing 1:
A kind of transfusion needle, comprises the transfusion catheter 4 that draw point 2, draw point holder 3, draw point sheath 1 and draw point holder 3 rear end connect, and draw point sheath 1 two ends can be punctured formula connector puncture end face and insert.
This characteristic is inserted, in production, as long as use common tubing just can production and processing because draw point sheath 1 two ends can be punctured formula connector puncture end face.By direct or bonding for draw point sheath 1 one end or be welded on draw point holder 3, whole draw point 2 is placed in draw point sheath 1, plays protection draw point 2 and anti-acupuncture two effect.In using, puncture type connector puncture end face inserts bottom draw point sheath 1.The frictional force between draw point sheath 1 and draw point holder 3 is utilized to fix.Because draw point 2 is in draw point sheath 1 inside completely, after transfusion needle accident is stressed, draw point 2 also can not directly stressedly can not fracture.And in use overall process, there will not be acupuncture unexpected.Unsettledly can use, and they need not be fixed on patient skin.
Embodiment two: shown in accompanying drawing 1:
A kind of transfusion needle, comprise the transfusion catheter 4 that draw point 2, the draw point holder 3 of convex, draw point sheath 1 and draw point holder 3 rear end connect, two ends can be punctured tubular steel needle shield 1 one end that formula connector puncture end face inserts and be fixed by socket in draw point holder front end by glue; It is equal with tubular steel needle shield 1 external diameter with the rear portion external diameter that draw point sheath 1 has a common boundary that needle stand 3 fixed by draw point; Draw point sheath 1 has longitudinal opening by the sidewall of soft high score prepared material manufacture, or puncture type connector leaves the shifted laterally space of 0.5 ~ 2.5 millimeter in draw point sheath 1; Draw point 2 is side-hole needle.
Draw point sheath 1 preparation of tubulose is easy to manufacture, and efficiency high cost is very low.Use the hand-held draw point holder 3 of middle medical personnel, handled easily, simultaneously because puncture type connector is positioned at tubular steel needle shield 1, even if after draw point 2 accident is stressed, draw point 2 also can not be directly stressed, even if fixation adhesive tape comes off, both are separated, transfusion needle also can not fracture, and there will not be acupuncture unexpected in use overall process.Needle stand 3 fixed by the draw point of convex does not in addition have step with draw point sheath 1 intersection, is placed in can not produce to prize outside patient skin to be easy to fixing.The sidewall of draw point sheath 1 by the manufacture of soft high score prepared material there are longitudinal straight line opening or indentation, or puncture type connector leaves the shifted laterally space of 0.5 ~ 2.5 millimeter in draw point sheath 1, be all that the puncture type connector in order to be applicable to different-diameter occurs the phenomenon of leakage to avoid repeated localised puncture puncture type connector puncture end face center.In addition, longitudinal opening can realize being connected with the puncture type connector on Y type remaining needle.
Embodiment three: shown in accompanying drawing 2:
A kind of transfusion needle, comprise the transfusion catheter 4 that draw point 2, the draw point holder 3 of column, draw point sheath 1 and draw point holder 3 rear end connect, two ends can be punctured tubular steel needle shield 1 one end that formula connector puncture end face inserts and directly be fixed by socket on whole draw point holder 3; Draw point sheath 1 has certain elastic macromolecular material manufacture by soft, and on sidewall, symmetry has 2 longitudinal openings (gap); Draw point sheath 1 sidewall can away from or close to draw point sheath 1 axis, draw point sheath 1 can hold the puncture type connector larger than its lumenal cross-section; Side opening draw point 2 length is no more than 3/4 of puncture type connector length.
Such structure, is easy to produce and manufacture.Use middle medical personnel that hand-held column draw point holder 2 can be facilitated to hold pin, handled easily.The sidewall that draw point sheath 1 is manufactured by soft polymer material having the gap of 2 longitudinal directions, is all that puncture type connector and draw point 2 in order to be applicable to different-diameter punctures and also can ensure that draw point sheath 1 can hold puncture type connector when non-piercing formula connector puncture end face center.Tubular steel needle shield 1 one end is directly fixed by socket on whole draw point holder 3, tubular steel needle shield 1 socket to meet easily produce and use in draw point sheath 1 can not vertical shift or come off.
Above-mentioned example, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to spirit of the present invention or modification, all should be encompassed within protection scope of the present invention.