CN207152843U - Modified Anti-stabbing transfusion needle - Google Patents

Abstract

The utility model discloses a kind of modified Anti-stabbing transfusion needle, including needle tubing, needle stand, fixed seat, it includes docking the cup dolly formed by two semicircle wings and port is fixedly arranged on two folding extending arms on the cup dolly, the cup dolly center also sets a through hole, above the first paragraph of every extending arm close to edge have can mutually locking domatic riser；Fluting is offered inside cup dolly, a thin type shrouding is movably set with the fluting, a hole corresponding with the through hole is opened up on the shrouding, described shrouding one end is provided with elastic component, when compressing the elastic component, the through hole is aligned with described hole, the end of needle tubing second is passed down through the through hole and hole, after the end of needle tubing second is upwardly separated from described hole, the shrouding, which resets, closes the through hole, the cup dolly lower surface is provided with adhesive paper, solves needle tubing easily again exposed to the technical problem of outer accidental injury operator.

Description

Modified Anti-stabbing transfusion needle

Technical field

Technical field of medical instruments is the utility model is related to, more specifically, a kind of modified is the utility model is related to and prevents Stab transfusion needle.

Background technology

For needing to receive chemotherapy or needing the long-term patient (4-10 weeks) for carrying out transfusion and antibiosis extract for treating, Yi Jixu Receive the patient of high concentration intravenous nutrition, present usual way is implantation CVC.Center used at present Its end of infusing of ductus venosus is external exposed to patient, is easy to cause to infect at puncture incision.It is fully implanted in now with one kind Formula central venous injection base, the infection that may trigger during detained central venous catheter can be avoided.Specifically for need it is long-term and Repeat the patients design of venipuncture injection.Through the puncture barrier film and conduit in injection seat center, medicine can be not only done Injection or continuity injection, blood product, high nutrition transfusion or other transfusions can also be conveyed.The implant site of injection seat is usual It is subcutaneous below clavicle.And the CVC being attached thereto is inserted into central vein.

The function of central venous injection base includes：Inject medicine, such as chemotherapeutic agent, antibiotic；Inject high concentration Venous transfusion, such as high protein and high nutrition preparation.

Installation center intravenous injection seat is advantageous in that：The conduit of injection seat is typically disposed in superior vena cava, can be quickly The medicine of ground dilution infusion, reduce phenomenon of the blood vessel because being produced hardening or necrosis by medicine irritation；It is special using injection seat It is that can be used that butterfly looper, which inserts directly through skin and punctures barrier film, conveniently and is not susceptible to shift；For needing long-term infusion Or the patient of chemotherapy, it may not be necessary to because blood vessel is too thin or can not find suitable vessel, or endured because of drug induced vascular sclerosis The pain of acupuncture treatment must be repeated.

Tip portion is exposed to outside to the common butterfly looper to match with central venous injection base after use, holds very much Easily injure operating personnel.Therefore, this area still need it is a kind of be avoided that after use injure operator or other people in it is calm Arteries and veins transfusion seat Anti-stabbing transfusion needle.

Utility model content

A purpose of the present utility model is that solve at least the above, and provides the advantages of at least will be described later.

The utility model also has a purpose to be to provide a kind of modified Anti-stabbing transfusion needle, general in the prior art to substitute Logical peri-operative central venous infusion seat Anti-stabbing transfusion needle, after transfusion needle use, needle tubing departs from from through hole upwards, needle tubing quilt It is contained in the guard space of extending arm formation, through hole is closed automatically with an elastic shrouding, avoids needle tubing again from through hole Exposure besides, accidentally injures operator, solves needle tubing easily again exposed to the technical problem of outer accidental injury operator.

In order to realize according to these purposes of the present utility model and further advantage, there is provided a kind of modified Anti-stabbing transfusion Pin, including：

Needle tubing (300), it is provided with the first end of bending and the second end；

Needle stand (200), it is a through tube shape structure, and the needle stand (200) is sheathed in the first end；

Fixed seat (100), it includes the cup dolly formed by the two semicircle wing (101) docking and port is fixedly arranged on institute Two folding extending arms (112) on cup dolly are stated, the end of each extending arm (112), which is equipped with one, to be connected In bare-handed shape structure (110,111)；The cup dolly center also sets a through hole (114), the end of needle tubing (300) second to Under through the through hole (114)；Two described extending arms (112) are symmetrical on direction, the first of every extending arm Have a domatic riser (117,118) close to edge above section, domatic riser (117) it is domatic inwardly, domatic riser (118) It is domatic inside, respectively there are two button holes (119,120) in the bottom of the domatic riser (117,118), in described button hole (120) Upper end be provided with back-off (121), back-off (121) selectivity locks with the button hole (119)；

Wherein, fluting is offered inside the cup dolly, a thin type shrouding (130) is movably set with the fluting, A hole (131) corresponding with the through hole (114) is opened up on the shrouding (130), described shrouding (130) one end is provided with bullet Property part (134), when compressing the elastic component (134), the through hole (114) is aligned with described hole (131), the needle tubing (300) second ends are passed down through the through hole (114) and hole (131), and the end of needle tubing (300) second is upwardly separated from the hole Behind hole (131), the shrouding (130), which resets, closes the through hole (114), and the cup dolly lower surface is provided with stickup Paper.

Preferably, the needle tubing (300) is the siphunculus formed by bending (301,302) structure at two, bending at first (301) both sides angle is 90 ° ± 20 °, and the angle of bending (302) is 165 ° ± 15 ° at second, bending at described first (301) bending (302) is located at the lower end of the needle tubing (300) at the upper end of the needle tubing (300), described second, described The needle tubing (300) is divided into the first end and the second end by bending (301) at first.

Preferably, folding structure at three (107,108,109) is equipped with each extending arm (112), it is described to stretch Swing arm (112) makes the needle stand (200) be fixed on the circular base by bending folding structure to the cup dolly center On seat；Infusion terminates, and extending arm (112) of the lifting in folded state, the extending arm (112) are upward from folded state upwards It is straightened, needle tubing (300) bottom is moved into fixed seat upwards；It is described when described extending arm (112) folds completely Needle tubing (300) be located in the through hole (114) and hole (131).

Preferably, bare-handed shape structure (110,111) is asymmetric in shape in described extending arm end, wherein There is the finger stretched out upwards one end, has aduncate hook (104) in the end of finger, in other end bare-handed There is the groove (105) to match with described finger on the outside of shape structure (110), lock is formed when both ends are combined Close, bare-handed the opposite lateral edges of shape structure (110,111) have the projection in the same direction with described extending arm (112) in described two (116)。

Preferably, two semicircle wings (101) are respectively having two breach (115) close to described extending arm (112) side, when When described extending arm (112) folds completely, in described two bare-handed the opposite lateral edges of shape structure (110,111) with it is described Together with extending arm (112) projection (116) in the same direction is inlayed with described breach (115).

Preferably, parallel with the extending arm to be additionally provided with a support bar, described support bar one end is fixedly arranged on the stretching, extension In on arm bare-handed at shape structure, the support bar other end is fixedly arranged on the bending part on the extending arm, when two extending arms are in When the heart is bent to form a quadrilateral structure, the support bar forms the hypotenuse of quadrilateral structure.

Preferably, one end that the support bar is located at the extending arm bending part is rugosity structure, when upward lifting institute When stating extending arm, the rugosity structure opens up stretching.

Preferably, one of them the described semicircle wing (101) bottom opens up a cavity, and the cavity includes first communicated Cavity (210) and the second cavity (220), second cavity (220) extend to another semicircle through the fluting In the wing (101).

Preferably, first cavity (210) is provided with boss (211) with the second cavity (220) junction, described Shrouding (130) includes integrally formed flat board (132) and bent plate (133), and bent plate (133) one end both sides are provided with elastic component (134), the elastic component (134) is located at the back side of the bent plate (133) wrap direction, and described hole (131) is opened in described On flat board (132), the flat board (132) is arranged in second cavity (220) extends to another institute through the fluting State in the semicircle wing (101), the elastic component (134) is resisted against the boss (211) and described hole (131) is led to described Hole (114) selection alignment.

Preferably, the depth that opens up of first cavity (210) opens up depth, institute more than second cavity (220) State the second cavity (220) and the inclined ramp of oriented first cavity (210) is set with the first cavity (210) junction, it is described Bent plate (133) is correspondingly arranged on the ramp, and the elastic component (134) is located in first cavity (210), the cavity Closed with a cover plate (400), the cover plate (400) flushes with the semicircle wing (101) bottom, and the adhesive paper is arranged on lid On plate (400) and the semicircle wing (101) base plane.

The utility model comprises at least following beneficial effect：

1st, fixed seat is a working of plastics through injection molding, and after needle tubing lifts, shrouding closes through hole, plays protection pin The effect of point, needle point can not be again outside, and this is the difference with similar products, and this structure causes product after assembling Reliability it is higher；

2nd, needle stand is the working of plastics through injection molding, and the design of needle stand can prevent leakage, make engaging of the needle tubing with fixed seat More firm, the material selected by needle stand is the rigid plastics that solvent bonding can be carried out with infusion tube, and other transfusion loopers do not have There is this needle stand, but stainless steel needle tubing is directly connected by light-sensitive emulsion with infusion tube, due to more crisp after photosensitive adhesive curing, Infusion tube is again softer, and the adhesion strength of light-sensitive emulsion and stainless steel needle tubing is limited, therefore often has leakage when in use Situation occur；

3rd, the bent angle (β) of this case should cause that the grinding surface (303) of needle point is parallel with the trunk of stainless steel needle tubing as far as possible, It is most laborsaving that central venous injection base is so sticked a needle into when in use, it is often more important that will not when being pierced into central venous injection base Buffings is cut, it is danger close to cut buffings, is on the one hand that may block peri-operative central venous infusion pipeline, another aspect buffings Possibly into patient's body, patient is caused further to injure；

4th, the structure is more firm firm when this case makes injection by extension supporting bar structure, solves what foldable structure was brought Factor built on the sand, support bar is set to be played a supporting role in injection by special supporting bar structure design, injection terminates Afterwards, when lifting upwards, stretch opening upwards with support arm, syringe needle is lifted back in fixed seat.

Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through Research of the present utility model and practice are understood by the person skilled in the art.

Brief description of the drawings

Fig. 1 is fixed seat accessory structure schematic diagram described in the utility model；

Fig. 2 is needle stand structure schematic diagram described in the utility model；

Fig. 3 is needle tubing structural representation described in the utility model；

Fig. 4 is assembling process schematic diagram described in the utility model；

Fig. 5 is the schematic diagram of taking-up needle tubing described in the utility model；

Fig. 6 is fixed seat polycrystalline substance schematic diagram；

Fig. 7 is closing plate structure schematic diagram；

Fig. 8 is fixed seat explosive view；

Fig. 9 is fixed seat sectional view.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation Book word can be implemented according to this.

It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more The presence or addition of individual other elements or its combination.

In this case using needle tubing direction under, using its opposite direction to be upper, to be interior to fixed seat center position, with to admittedly Reservation center position is outer, only states relative direction and is used, without the restriction in this, as direction.

The utility model electricity provides a kind of modified Anti-stabbing transfusion needle, and as shown in figs 1-9, fixed seat 100 can be by moulding Material raw material pass through injection molding, and the cup dolly and port for having the docking formation of two symmetrical semi-circular shape wings 101 are fixedly arranged on the circle Two folding extending arms 112 on shape base, be equipped with each extending arm 112 folding structure 107 at three, 108th, 109, extending arm 112 is specifically divided into：First extending arm 112a, will by three folding structure 107a, 108a, 109a First extending arm 112a is formed as folding first paragraph 117 and second segment 103, and first paragraph 117 is arranged to intilted slope Two button holes 120 are respectively arranged at face riser 117a and 117b, domatic riser 117a and 117b bottoms, in the upper end of described button hole 120 Back-off 121 is provided with, sticking department is provided with back-off 121；Second extending arm 112b, by three folding structure 107b, 108b, 109b, the second extending arm 112a is formed as into folding first paragraph 118 and second segment 102, first paragraph 118 is arranged to lean outward Two button holes 119 are respectively arranged at oblique domatic riser 118a and 118b, domatic riser 118a and 118b bottoms, and the back-off 121 can be with The button hole 119 locks, so as to which first paragraph 117 and first paragraph 118 be connected；

Bare-handed shape structure 110 during the outside of second segment 102 is provided with, bare-handed shape knot during the outside of second segment 103 is correspondingly arranged on Structure 111, in bare-handed shape structure 110,111 be asymmetric in shape, wherein in bare-handed shape structure 111 have the finger stretched out upwards Shape structure, there are aduncate hook 104a, 104b, 104c in the end of finger, the bare-handed shape structure 110 in other end Outside have groove 105a, 105b, the 105c to match with described finger, formed when both ends are combined it is sealed, Hook 104a, 104b, 104c tip upside down on groove 105a, 105b, 105c outside.Bare-handed shape structure 110,111 in described two Opposite lateral edges have raised 116a, 116b, 116c, the 116d in the same direction with described extending arm 112, and two semicircle wings 101 exist Respectively there are two breach 115 close to the described side of extending arm 112, when described extending arm 112 folds completely, in described two Bare-handed shape structure 110,111 opposite the lateral edges raised and breach 115 of described in the same direction with described extending arm 112 are embedded in one Rise.

The cup dolly center also sets a through hole 114, and fluting is offered inside the cup dolly, is lived in the fluting It is dynamic to be provided with a thin type shrouding 130, a hole 131 corresponding with the through hole 114 is opened up on the shrouding 130, specifically, institute Stating shrouding 130 includes integrally formed flat board 132 and bent plate 133, and one end both sides of bent plate 133 are provided with elastic component 134, The elastic component 134 is located at the back side of the wrap direction of bent plate 133, and described hole 131 is opened on the flat board 132.

A semicircle bottom of the wing 101 opens up a cavity wherein, and the cavity includes communicating and vertically disposed First cavity 210 and the second cavity 220, wherein, first cavity 210 opens up depth more than second cavity 220 Depth is opened up, and the junction of 220 and first cavity of the second cavity 210 sets oriented first cavity, the 210 inclined slope Road, the bent plate 133 is corresponding to be movably arranged on the ramp, and second cavity 220 extends transversely through the fluting and extended Into the semicircle wing 101 another described, the flat board 132 is movably arranged on the semicircle wing 101 of the upper end of through hole 114, is made Obtaining the through hole 114 can be aligned with described hole 131, and first cavity 210 is provided with the junction of the second cavity 220 Boss 211, the elastic component 134 are located in the first cavity 210, and the flat board 132 is arranged in second cavity 220 and passed through The fluting is worn to extend in another described semicircle wing 101, can be with described hole by through hole 114 when mobile closing plate 131 alignments, specifically, during nature, the elastic component 134 is resisted against the boss 211, and described hole 131 leads to described Hole 114 is deviateed, when promote shrouding to fluting direction movement when, compression elastic piece 134 so that described hole 131 with The through hole 114 is aligned.

Finally, the cavity is closed with a dismountable cover plate 400, the cover plate 400 and the semicircle bottom of the wing 101 Flush, be provided with adhesive paper on cover plate 400 and the semicircle base plane of the wing 101, skin is protected for being fitted in.

Needle tubing 300 is a stainless steel needle tubing, forms siphunculus by bending 301,302 structures at two, is rolled at described first Curved 301 divide the needle tubing 300 for the first end and the second end.Bending 301 is used to coordinate with the hole of needle stand and groove, bending 302 be in order that grinding surface 303 is as parallel with the trunk of pin as possible.The both sides angle of bending 301 at first is 90 ° ± 20 °, The angle of bending 302 is 165 ° ± 15 ° at second, at described first bending 301 be located at the upper end of the needle tubing 300, described the Bending 302 is located at the lower end of the needle tubing 300 at two, and during original state, the end of needle tubing 300 second is passed down through the through hole 114, for puncturing.

It is a through tube shape structure to needle stand 200, and the needle stand 200 is sheathed in the first end；The needle stand 200 has One thick section 201 and a thinner conical section 202, described thick one end of section 201 form half groove, have one in the groove side of middle part half of thick section Block-shaped protrusion 203, there are half groove and half groove of thick section to collectively form complete half groove 205 in projection.

The compression elastic component 134 is promoted during assembling first, the through hole 114 is aligned with described hole 131, the needle tubing 300 second ends are passed down through the through hole 114 and hole 131, are then closed cavity with cover plate, then with glue, such as epoxy resin Or light-sensitive emulsion etc. by needle tubing and needle stand bonding and is fixed, and the logical of fixed seat automobile parts center then is inserted at the tip of needle tubing 300 Kong Zhong, the following direction bending the extending arm of fixed seat piece according to arrow in accompanying drawing 4, bare-handed shape structure in two The both ends insertion of hollow alignment needle stand, the at this moment bare-handed finger alignment of shape structure bare-handed groove 105 of shape structure in another in one, Bare-handed the plane of shape structure is touched and refers to the hook of front end when together and catch on the end of groove 105 just in two, and two at this moment are hollow One handle of fist shape structure composition, meanwhile, the block-shaped protrusion on needle stand causes pin and needle stand assembly be fixed on it is middle not Can be mobile；Cause four openings 115 on four raised embedded semicircle wing straight flanges by handle downwards, so allow for whole two Individual extending arm is in completely folded state, then the connection of the taper end of infusion tube and needle stand is just completed and assembles and is put on to needle tubing Protective case and the assembling for completing product.

Hand-held handle during use, remove needle tube protecting sleeve, being pierced into the subcutaneous central venous injection base of implanted patient is It can carry out infusing, be fixed by the adhesive paper for being arranged on the cup dolly lower surface with epidermis.After the completion of transfusion, a hand Thumb and forefinger pin two semicircle wings, another hand is pulled upwardly handle, as shown in Figure 5, at this moment extending arm open, Riser on arm is overlapping, and from through hole 114 with being drawn out in described hole 131, the elastic component 134 resets whole needle tubing, Hole 131 is offset with through hole 114, and flat board covers through hole, and the needle point of the bottom of needle tubing is blocked by flat board, and extending arm is stretched When, back-off 121 locks with the button hole 119, and extending arm is locked in the state stretched, and the end of needle tubing second is contained in stretching, extension In the space that arm is formed, play a part of protecting needle point, needle point can not be again outside, and this structure causes product after assembling Reliability it is higher.

In another embodiment, parallel with the extending arm is additionally provided with a support bar, and described support bar one end is fixedly arranged on In on the extending arm bare-handed at shape structure, the support bar other end is fixedly arranged on the bending part on the extending arm, stretches when two Swing arm to center be bent to form a quadrilateral structure when, the support bar forms the hypotenuse of quadrilateral structure, the support bar position In one end of the extending arm bending part be rugosity structure, when lifting the extending arm upwards, the rugosity structure to It is upper to open stretching.

From the above mentioned, fixed seat of the present utility model is a working of plastics through injection molding, and after needle tubing lifts, shrouding will Through hole is closed, and plays a part of protecting needle point, and needle point can not be again outside, and this is the difference with similar products, this Kind structure make it that the reliability of product after assembling is higher；Meanwhile needle stand is the working of plastics through injection molding, the design of needle stand can be prevented Leak-stopping liquid, make engaging of the needle tubing with fixed seat more firm, the material selected by needle stand is can to carry out solvent with infusion tube to glue The rigid plastics of knot, other transfusion loopers are without this needle stand, but stainless steel needle tubing directly passes through light-sensitive emulsion and infusion tube Connection, due to more crisp after photosensitive adhesive curing, infusion tube is again softer, and the adhesion strength of light-sensitive emulsion and stainless steel needle tubing It is limited, therefore often have the situation of leakage when in use；And the bent angle (β) of this case should cause the grinding of needle point as far as possible Face 303 is parallel with the trunk of stainless steel needle tubing, and it is most laborsaving so to stick a needle into central venous injection base when in use, more important Be that will not cut buffings when being pierced into central venous injection base, it is danger close to cut buffings, is on the one hand to block Peri-operative central venous infusion pipeline, another aspect buffings may also enter patient's body, patient caused further to injure；Finally, The structure is more firm firm when this case makes injection by extension supporting bar structure, solve that foldable structure brings built on the sand because Element, support bar is played a supporting role in injection by special supporting bar structure design, after injection terminates, carry upwards During drawing, stretch opening upwards with support arm, syringe needle is lifted back in fixed seat.

Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art, Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality Specific details is not limited to new and shown here as the legend with description.

Claims (10)

1. A kind of 1. modified Anti-stabbing transfusion needle, it is characterised in that including：

   Needle tubing (300), it is provided with the first end of bending and the second end；

   Needle stand (200), it is a through tube shape structure, and the needle stand (200) is sheathed in the first end；

   Fixed seat (100), it includes the cup dolly formed by the two semicircle wing (101) docking and port is fixedly arranged on the circle Two folding extending arms (112) on shape base, the end of each extending arm (112) be equipped with one it is attachable in Bare-handed shape structure (110,111)；The cup dolly center also sets a through hole (114), and the end of needle tubing (300) second is worn downwards Cross the through hole (114)；Described two extending arms (112) are symmetrical on direction, in the first paragraph of every extending arm Have a domatic riser (117,118) close to edge above, domatic riser (117) it is domatic inwardly, domatic riser (118) it is domatic Inwardly, respectively there are two button holes (119,120) in the bottom of the domatic riser (117,118), in the upper of described button hole (120) End is provided with back-off (121), and back-off (121) selectivity locks with the button hole (119)；

   Wherein, fluting is offered inside the cup dolly, a thin type shrouding (130) is movably set with the fluting, it is described A hole (131) corresponding with the through hole (114) is opened up on shrouding (130), described shrouding (130) one end is provided with elastic component (134) when, compressing the elastic component (134), the through hole (114) is aligned with described hole (131), the needle tubing (300) Two ends are passed down through the through hole (114) and hole (131), and the end of needle tubing (300) second is upwardly separated from described hole (131) Afterwards, the shrouding (130), which resets, closes the through hole (114), and the cup dolly lower surface is provided with adhesive paper.
2. 2. modified Anti-stabbing transfusion needle as claimed in claim 1, it is characterised in that the needle tubing (300) is by two The siphunculus that bending (301,302) structure is formed, the both sides angle of bending (301) is 90 ° ± 20 ° at first, bending at second (302) angle is 165 ° ± 15 °, at described first bending (301) be located at the upper end of the needle tubing (300), at described second Bending (302) is located at the lower end of the needle tubing (300), at described first bending (301) needle tubing (300) is divided into described One end and the second end.
3. 3. modified Anti-stabbing transfusion needle as claimed in claim 2, it is characterised in that on each extending arm (112) Provided with folding structure (107,108,109) at three, the extending arm (112) to cup dolly center bending by that can roll over Stack structure makes the needle stand (200) be fixed on the cup dolly；Infusion terminates, upwards stretching, extension of the lifting in folded state Arm (112), the extending arm (112) are straightened upwards from folded state, and needle tubing (300) bottom is moved into solid upwards In reservation；When described extending arm (112) folds completely, described needle tubing (300) is located at the through hole (114) and hole (131) in.
4. 4. modified Anti-stabbing transfusion needle as claimed in claim 3, it is characterised in that in described extending arm end bare-handed Shape structure (110,111) is asymmetric in shape, and wherein there is the finger stretched out upwards one end, at the end of finger There is aduncate hook (104) at end, bare-handed has in other end on the outside of shape structure (110) and described finger phase The groove (105) matched somebody with somebody, forms sealed when both ends are combined, and bare-handed shape structure (110,111) is opposite in described two Lateral edges have the projection (116) in the same direction with described extending arm (112).
5. 5. modified Anti-stabbing transfusion needle as claimed in claim 4, it is characterised in that two semicircle wings (101) are close Respectively there are two breach (115) described extending arm (112) side, when described extending arm (112) folds completely, described two In the bare-handed opposite lateral edges of shape structure (110,111) and described extending arm (112) projection (116) in the same direction and described breach (115) inlay together.
6. 6. modified Anti-stabbing transfusion needle as claimed in claim 5, it is characterised in that parallel with the extending arm is additionally provided with One support bar, described support bar one end be fixedly arranged on the extending arm in bare-handed at shape structure, the support bar other end is fixed Bending part on the extending arm, when two extending arms are bent to form a quadrilateral structure to center, the support bar is formed The hypotenuse of quadrilateral structure.
7. 7. modified Anti-stabbing transfusion needle as claimed in claim 6, it is characterised in that the support bar is located at the extending arm One end of bending part is rugosity structure, and when lifting the extending arm upwards, the rugosity structure opens up stretching.
8. 8. modified Anti-stabbing transfusion needle as claimed in claim 7, it is characterised in that one of them described semicircle wing (101) bottom opens up a cavity, and the cavity includes the first cavity (210) and the second cavity (220) communicated, second chamber Road (220) is extended in another described semicircle wing (101) through the fluting.
9. 9. modified Anti-stabbing transfusion needle as claimed in claim 8, it is characterised in that first cavity (210) with it is described Second cavity (220) junction is provided with boss (211), and the shrouding (130) includes integrally formed flat board (132) and bent plate (133), bent plate (133) one end both sides are provided with elastic component (134), and the elastic component (134) is located at the bent plate (133) The back side of wrap direction, described hole (131) are opened on the flat board (132), and the flat board (132) is arranged on described second Extended in cavity (220) through the fluting in another described semicircle wing (101), the elastic component (134) is resisted against The boss (211) causes described hole (131) to be aligned with the through hole (114) selection.
10. 10. modified Anti-stabbing transfusion needle as claimed in claim 9, it is characterised in that the first cavity (210) are opened If depth is more than the depth that opens up of second cavity (220), second cavity (220) and the first cavity (210) junction The inclined ramp of oriented first cavity (210) is set, and the bent plate (133) is correspondingly arranged on the ramp, the bullet Property part (134) be located in first cavity (210), the cavity one cover plate (400) closing, the cover plate (400) and institute State the semicircle wing (101) bottom to flush, the adhesive paper is arranged on cover plate (400) and the semicircle wing (101) base plane On.