CN108404257A

CN108404257A - safe insulin needle

Info

Publication number: CN108404257A
Application number: CN201810117903.6A
Authority: CN
Inventors: 张洪杰; 王兴国
Original assignee: Pepm Medical Technology Co Ltd
Current assignee: Pepm Medical Technology Co Ltd
Priority date: 2018-02-06
Filing date: 2018-02-06
Publication date: 2018-08-17
Anticipated expiration: 2038-02-06
Also published as: WO2019153556A1; CN108404257B

Abstract

The invention discloses a kind of safe insulin needles, including sheath, needle tubing, safety shield, needle stand, wherein, needle tubing is set on the central shaft of needle stand, and is distributed along central shaft, one assembly cavity is formed at the lower part of needle stand, the lower end of needle tubing extends in the assembly cavity, and needle tubing mounted base is formed at the top of needle stand, and the upper end of needle tubing extends upwardly to needle tubing mounted base top, the outside of needle stand is socketed with a safety shield, and locking structure is formed between cavity wall and the outer wall of needle stand in safety shield.Its technique effect is：Product overall structure is simple and practical, small volume, and fitness is compact between each component, and assembly process is also further simplified, and can disposably complete to assemble.The locking structure of product is stablized, and suitable, counter clockwise direction and axial lock can be achieved at the same time, effectively improve the safety coefficient of product.

Description

Safe insulin needle

Technical field

The present invention relates to the technical field of medical instrument, specifically a kind of safe insulin needle, more particularly to its machine Tool connection structure.

Background technology

Documents, application number：201420663437.9 the applying date：2014.11.10 patentee：Shellfish is general for Wenzhou City Science and Technology Ltd., this case disclose disposable safety destructing insulin needle, a needle are equipped in the insulin needle ontology Seat, the needle stand is integrally cylindrical, and the needle stand inner cavity of the cylindrical shape is in hollow form, and needle tubing substrate is equipped in the cavity of needle stand, should The inner cavity of needle stand is divided into top separate space and lower part separate space, the inner wall of lower part separate space to punish cloth by needle tubing substrate There is internal thread, a spring fixed column is equipped at the centre bit of needle tubing upper surface of base plate, the hypomere of the spring fixed column is positioned at above-mentioned In the separate space of top, a needle tubing is equipped at needle tubing substrate, which runs through needle tubing substrate, and one end of needle tubing, which is run through, is located at needle tubing It is upwardly extended after the spring fixed column of substrate center position, the other end of needle tubing prolongs after needle tubing substrate into lower part separate space It stretches, the both ends of needle tubing are in puncture tip shape, and the inner wall punishment of needle tubing top separate space is furnished at least a piece of elastic piece, and elastic piece exists It is in angularly disposed at the inner wall of syringe intracavity, one end of elastic piece and the inner wall of syringe intracavity connect, and the other end of elastic piece is outstanding Sky, the free end are directed toward needle tubing upper surface of base plate at centre bit, a spring are socketed with outside above-mentioned spring fixed column, the bullet One end of spring resists safety shield, is socketed at the upper end of needle stand upwards downwardly against needle tubing upper surface of base plate, the other end of spring There are a safe deck, the lower end of safe deck and the upper end of needle stand to be mutually socketed, a safety protective is equipped at the upper end of safe deck Set, safe deck is integrally cylindrical, and the inner cavity of safe deck is in hollow form, and ring is formed at the inner edge of safe deck upper end opening Shape limiting section, safety shield is whole also cylindrical, and the inner cavity of safety shield is in hollow form, the outer rim of safety shield lower ending opening Place forms the cyclic annular limit protrusion portion with above-mentioned cyclic annular limiting section cooperation, which is located at above-mentioned cyclic annular limiting section In the cavity of the safe deck in lower section, the upper surface in cyclic annular limit protrusion portion can be downwardly against the lower face of cyclic annular limiting section, safety The inner edge of the outer rim of sheath lower ending opening and safe deck upper end opening mutually limits mutual socket, and the outside of spring is socketed with one Self-destruction wedge, self-destruction wedge is integrally cylindrical, and the inner cavity of self-destruction wedge is in hollow form, and the outer diameter in self-destruction wedge epimere portion is less than The outer diameter in self-destruction wedge hypomere portion forms ring-type limiting table rank, self-destruction wedge hypomere between self-destruction wedge epimere portion and hypomere portion The outer diameter in portion is more than the diameter of safety shield inner cavity, and the outer diameter in self-destruction wedge epimere portion is less than or equal to the straight of safety shield inner cavity Diameter, self-destruction wedge epimere portion are located in the cavity of safety shield, and the end face of ring-type limiting table rank resists safety shield lower end upwards End face, the cyclic annular protrusion with elastic piece cooperation, the ring-type protrusion and needle tubing are formed at the outer wall in self-destruction wedge hypomere portion Between vertical range be more than vertical range between elastic piece free end and needle tubing, above-mentioned safety shield upper end at closed, The closed endface offers circular hole, and the diameter of the circular hole is less than the diameter in spring upper end portion, and spring upper end resists peace upwards The inner surface of full sheath upper surface, the endface of needle stand lower end is covered with dialyzing paper.

Although existing similar product can realize safe self-destroying function, due to the limitation in structure, lead to small product size Larger, cost is higher.

Invention content

The purpose of the present invention is to provide a kind of safe insulin needle, product is made of four main elements, assembly process It is simple with assembling structure, stable working state.Small product size is small and exquisite, of low cost, and the function of safety is realized with lower cost, Overcome shortcoming and defect existing in the prior art.

To achieve the goals above, in the embodiment of the present invention, disclose a kind of safe insulin needle, including sheath, needle tubing, Safety shield, needle stand, wherein needle tubing is set on the central shaft of needle stand, and is distributed along central shaft, and a dress is formed at the lower part of needle stand With chamber, the lower end of needle tubing extends in the assembly cavity, and needle tubing mounted base is formed at the top of needle stand, and the upper end of needle tubing upwardly extends To needle tubing mounted base top, the outside of needle stand is socketed with a safety shield, in safety shield the outer wall of cavity wall and needle stand it Between form the locking structure in solid space, the outside of safety shield is socketed with a sheath, the sheath lumen inner wall and safety protective Anti- sidespin structure is formed between the outer wall of set.

The application method of safe insulin needle, as shown in Figure 13 to Figure 32, the step of application method, is as follows：

, safe insulin needle is screwed into novopen clockwise, internal thread and the novopen end of needle stand assembly cavity External screw thread coordinates, and during rotating clockwise, limited step can be driven gradually to be touched with limit plane and be finally engaged, used Safety shield is pulled out in preventing the when of extracting sheath；

, at this point, safety shield salient point and needle stand lower salient point be interference fitted, salient point is located at the lower section of lower salient point, for preventing Only safety shield is non-artificial shifts up；

, after the completion of injection, spin safe sheath counterclockwise in place, makes end face and the limit planar separation of limited step；

, then, pull up safety shield, salient point is finally up over upper salient point, at this point, upper salient point forms temporarily salient point When reverse limit, spacing collar resists limited block upwards, for being limited to shifting up for safety shield；

, at this point, rotate clockwise safety shield, limit raised line easily by intermediate incline, slides into lock room；

, slide into lock room both sides be respectively formed anti-reverse platform and stopper, in the restriction effect of anti-reverse platform and stopper Under, limit raised line can not all be rotated in Fang Shangxiang suitable, counterclockwise；

, on axis direction, the plane for limiting the lower face of raised line is limited platform limit, and spacing collar is limited block limit, At this point, safety shield is suitable, reverse rotation and upper and lower displacement are limited, it can not move and complete self-locking, above-mentioned needle tubing is by safety shield It is fully wrapped around live, safety protection function is triggered.

The invention discloses a kind of safe insulin needle, technique effect is：Product overall structure is simple and practical, volume compared with Small, fitness is compact between each component, and assembly process is also further simplified, and can disposably complete to assemble.The locking structure of product Stablize, suitable, counter clockwise direction and axial lock can be achieved at the same time, effectively improve the safety coefficient of product.

Description of the drawings

Fig. 1 is schematic structural view of the invention.

Fig. 2 is jacket structure schematic diagram of the present invention.

Fig. 3 is cross-sectional view of the present invention.

Fig. 4 is safety shield structural schematic diagram of the present invention.

Fig. 5 is safety shield stereogram of the present invention.

Fig. 6 is one embodiment cross-sectional view of safety shield of the present invention.

Fig. 7 is partial enlarged view at G in Fig. 6.

Fig. 8 is that safety shield assembles original locking status diagram with needle stand.

Fig. 9 is needle stand structure schematic diagram of the present invention.

Figure 10 is partial enlarged view at H in Fig. 9.

Figure 11 is that safety shield assembles original the first sectional view of locking state with needle stand.

Figure 12 is needle stand stereogram of the present invention.

Figure 13 is the first usage state diagram of the invention.

Figure 14 is the second usage state diagram of the invention.

Figure 15 is that safety shield assembles the second cross section view of reset condition with needle stand.

Figure 16 is the three-dimensional cutaway view of Figure 14.

Figure 17 is partial enlarged view at A in Figure 16.

Figure 18 is third usage state diagram of the present invention.

Figure 19 is the 4th usage state diagram of the invention.

Figure 20 is the three-dimensional cutaway view of Figure 19.

Figure 21 is partial enlarged view at B in Figure 20.

Figure 22 is the 5th usage state diagram of the invention.

Figure 23 is partial enlarged view at C in Figure 22.

Figure 24 is limit process status schematic diagram of the raised line by intermediate incline.

Figure 25 is partial enlarged view at D in Figure 24.

Figure 26 is the 6th usage state diagram of the invention.

Figure 27 is the stereogram of Figure 25.

Figure 28 is partial enlarged view at E in Figure 27.

Figure 29 is the status diagram for limiting raised line and being locked in lock room.

Figure 30 is safety shield and the final lock-out state partial sectional view of needle stand.

Figure 31 is partial enlarged view at F in Figure 30.

Figure 32 is safeguard protection status diagram of the present invention.

Specific implementation mode

With reference to the accompanying drawings, the present invention is further described below.

As shown in fig. 1, in the embodiment of the present invention, a kind of safe insulin needle is disclosed, is different from the prior art In：Including sheath 1, needle tubing 2, safety shield 3, needle stand 4, wherein needle tubing 2 is set on the central shaft of needle stand 4, and along central shaft One assembly cavity 41 is formed at the lower part of distribution, needle stand 4, and for docking novopen 7, the lower end of needle tubing 2 extends to the assembly cavity 41 In the assembly cavity 41, needle tubing mounted base 46 is formed at the top of needle stand 4, and the upper end of needle tubing 2 extends upwardly to needle tubing mounted base The outside on 46 tops, needle stand 4 is socketed with a safety shield 3, and lock is formed between cavity wall and the outer wall of needle stand 4 in safety shield 3 Determine structure, 3 end-state of safety shield can cover on the needle tubing on 4 top of needle stand in it completely, between safety shield 3 and needle stand 4 Final position be relatively fixed, the outside of safety shield 3 is socketed with a sheath 1, cavity wall and safety shield 3 in the sheath 1 Anti- sidespin structure is formed between outer wall, sheath 1 can cover on safety shield 3 and needle stand and needle tubing in it in product reset condition.

In the specific implementation, as shown in Figure 2, the sheath 1 is made of upper and lower part, and the inner cavity of sheath 1 is in hollow The top of shape, sheath 1 is in circular cone shape, and the lower part of sheath 1 is cylindrical, and the lower edge diameter on 1 top of sheath is less than 1 lower part of sheath Diameter, the junction of 1 top of sheath and lower part forms cricoid positioning step 12, is formed on the interior cavity wall of 1 lower part of sheath The top of several outer ring vertical bars 11,1 top of sheath is in closed.

In the specific implementation, as shown in Fig. 3, Fig. 4, the safety shield 3 is made of upper and lower part, safety shield 3 Inner cavity be in hollow form, the upper and lower part of safety shield 3 is cylindrical in shape, and the diameter on 3 top of safety shield is less than safety shield 3 The junction of the diameter of lower part, 3 top of safety shield and lower diameter forms annular platform 36, the annular platform 36 with it is above-mentioned fixed Position step 12 coordinates, and annular platform 36 resists positioning step 12 upwards, and the outer wall punishment of 3 lower part of safety shield is furnished with several protrusions The positioning strip 32 of shape forms vacancy face 31, the vacancy face 31 and above-mentioned outer ring vertical bar at the outer wall between adjacent positioning strip 32 11 correspond cooperation, are interference fitted between vacancy face 31 and outer ring vertical bar 11, and above-mentioned several positioning strips 32 are annular in shape equidistantly It is distributed in 3 lower part outer wall surface of safety shield, when sheath 1 is assembled with safety shield 3, outer ring vertical bar 11 is axially inserted into vacancy face 31, by realizing metastable assembling structure by being interference fitted between the two, the top on 3 top of safety shield, which offers, wears Pin hole 37, the upper end of needle tubing can thread a needle from this and be pierced by from hole 37.

In the specific implementation, as shown in Figure 5, the safety shield 3 is made of upper and lower part, safety shield 3 it is interior Chamber is in hollow form, be distributed on the interior cavity wall of 3 lower part of safety shield several convex inner ring vertical bar 33 and at least one calmly Position vertical bar 35, inner ring vertical bar 33 and positioning vertical bar 35 are annularly distributed on the interior cavity wall of 3 lower part of safety shield, wherein fixed The lower end of the amesiality formation limited step 351 in lower end of position vertical bar 35, positioning vertical bar 35 forms the cone-shaped of guide function, limit The position convex distribution on the interior cavity wall of 3 lower part of safety shield of step 351.

In the specific implementation, as shown in Figure 6, the safety shield 3 is made of upper and lower part, safety shield 3 it is interior Chamber is in hollow form, and the interior cavity wall on 3 top of safety shield is equipped with limit raised line 38, which is equipped with a salient point 381, it limits and forms plane 382 at the lower face of raised line 38, the axial direction of limit raised line 38 and safety shield 3 is in parallelly distribute on.

In the specific implementation, as shown in Figure 7, the inner wall of 3 inner cavity of the safety shield is equipped with the limit of annular distribution Circle 34, the spacing collar 34 convex setting on the inner wall of inner cavity.

In the specific implementation, as shown in Figure 8, several limit vertical bars 44 and extremely are distributed on the outer wall of the assembly cavity 41 A few positive stop strip 45, the convex distribution on the outer wall of assembly cavity 41 of the limit vertical bar 44 and positive stop strip 45 are described Limit vertical bar 44 is matched with above-mentioned inner ring vertical bar 33, and positive stop strip 45 is matched with above-mentioned positioning vertical bar 35, under positive stop strip 45 End forms the limit plane 451 coordinated with above-mentioned limited step 351, and in assembly, inner ring vertical bar 33 and positioning vertical bar 35 are from limit Gap location between position vertical bar 44 and positive stop strip 45 is inserted into, 3 sidespin of safety shield, and limited step 351 is inserted into limit plane 451 Lower section, limited step 351 resist limit plane 451 upwards, realize that the locking of reset condition between safety shield 3 and needle stand fills Match.

In the specific implementation, as shown in Fig. 9, Figure 10, formation and limit convex at the outer wall of the needle tubing mounted base 46 The slideway 6 that item 38 coordinates, which is provided with the lower salient point 51 being distributed up and down and upper salient point 42, the side of 6 upper end of slideway The side of intermediate incline 47 equipped with convex, intermediate incline 47 forms lock room 49, and the side of lock room forms convex Stopper 50, between intermediate incline 47 and stopper 50,47 inside of intermediate incline forms anti-reverse platform 471 for lock room 49, The anti-reverse platform 471 of 49 both sides of lock room and the madial wall of stopper 50 are planomural, and the madial wall of both sides is used for limit convex Item 38 is limited, and the lower end of lock room 49 forms limiting platform 52, and limiting platform 52 is for coordinating under above-mentioned limit raised line 38 The plane 382 at end, for limiting 3 axial displacement of safety shield, the slideway 6 is with lock room 49 in the outer of needle tubing mounted base 46 In being alternately distributed at wall, a lock room 49 is equipped between adjacent slideway 6.

In the specific implementation, as shown in figure 9, the lower edge of the lock room 49 be equipped with protrude from outside needle tubing mounted base 46 The limited block 48 of wall, which coordinates with above-mentioned spacing collar 34, for stopping that spacing collar 34 shifts up.

In the specific implementation, as shown in Figure 11, Figure 12, the needle stand 4 is by superposed 46 He of needle tubing mounted base Assembly cavity 41 positioned at lower part is constituted, and the outer diameter of needle tubing mounted base 46 is less than the outer diameter of assembly cavity 41, needle tubing mounted base 46 Cricoid needle stand platform 43 is formed with the junction of assembly cavity 41, as shown in Figure 12, is formed on the interior cavity wall of assembly cavity 41 Inside spin 53.

Implementing, in use, as shown in Figure 13 to Figure 32, safe insulin needle to be screwed into novopen 7 clockwise End, during being somebody's turn to do, sheath 1 can drive safety shield 3 while rotate, while triggering limited step 351 and being inserted into limit plane 451 lower sections, and realize and be mutually twisted, it prevents from pulling out safety shield when extracting sheath, 4 lower part of needle stand is assembled to by helicitic texture Assembly cavity in, be interference fitted between the salient point 381 of safety shield and lower salient point 51, salient point 381 is located at the lower section of lower salient point 51, Lower salient point 51 prevents safety shield is non-artificial to be moved upward, duplicate protection is realized, in Figure 16 for stopping salient point 381 Shown, after the completion of injection, spin safe sheath counterclockwise is in place so that and above-mentioned limited step 351 is detached with limit plane 451, Pulling safety shield then up, salient point 381 finally crosses salient point 42, the lower section of the limited block 48 on earth of spacing collar 34, and to On resist limited block 48, at this point, rotate clockwise safety shield, the hypomere of limit raised line 38 can take advantage of a situation laterally through intermediate incline 47, and drop into above-mentioned lock room 49, under the limitation of anti-reverse platform 471 and stopper 50, limit 38 hypomere of raised line is positive and negative （It is suitable, counterclockwise）Direction can not all rotate, and on axial direction, the plane 382 of 38 lower end of limit raised line is limited downwards platform 52 Limit, meanwhile, spacing collar 34 is limited the limit of block 48 upwards, at this point, the sidespin of safety shield and upper and lower displacement are locked by limitation It is fixed, the purpose of final self-locking is completed, at this point, the upper end of needle tubing is covered in safety shield completely, completes safety protection function Start.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that Present invention specific implementation is confined to these above-mentioned explanations.For those of ordinary skill in the art to which the present invention belongs, Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention Protection domain.

Claims

1. safe insulin needle, it is characterised in that：Including needle tubing（2）, safety shield（3）, needle stand（4）, wherein needle tubing（2）If It is placed in needle stand（4）Central shaft on, and along central shaft be distributed, needle stand（4）Lower part formed an assembly cavity（41）, needle tubing（2）'s Lower end extends to the assembly cavity（41）It is interior, needle stand（4）Top formed needle tubing mounted base（46）, needle tubing（2）Upper end it is upward Extend to needle tubing mounted base（46）Top, needle stand（4）Outside be socketed with a safety shield（3）, safety shield（3）Interior intracavitary Wall and needle stand（4）Outer wall between form locking structure；

The safety shield（3）It is made of upper and lower part, safety shield（3）Inner cavity be in hollow form, safety shield（3）Lower part Interior cavity wall on be distributed at least one positioning vertical bar（35）, wherein positioning vertical bar（35）The amesiality formation in lower end limit Position step（351）, limited step（351）In safety shield（3）Convex distribution on the interior cavity wall of lower part；

The safety shield（3）It is made of upper and lower part, safety shield（3）Inner cavity be in hollow form, safety shield（3）Top Interior cavity wall be equipped with limit raised line（38）, the limit raised line（38）It is equipped with a salient point（381）, limit raised line（38）Under Endface forms plane（382）, limit raised line（38）With safety shield（3）Axial direction be in parallelly distribute on；

The safety shield（3）The inner wall of inner cavity is equipped with the spacing collar of annular distribution（34）, the spacing collar（34）In inner cavity Convex setting on inner wall；

The safety shield（3）The top on top offers hole of threading a needle（37）；

The assembly cavity（41）Outer wall on an at least positive stop strip is distributed with（45）, the positive stop strip（45）In assembly cavity（41） Outer wall on convex distribution, positive stop strip（45）With above-mentioned positioning vertical bar（35）It matches, positive stop strip（45）Lower end shape At with above-mentioned limited step（351）The limit plane of cooperation（451）；

The needle tubing mounted base（46）Outer wall at formed with limit raised line（38）The slideway of cooperation（6）, the slideway（6）Surface It is provided with the lower salient point being distributed up and down（51）With upper salient point（42）, slideway（6）The side of upper end is equipped with the intermediate incline of convex （47）, intermediate incline（47）Side formed lock room（49）, the side of lock room forms the stopper of convex（50）, locking Area（49）Positioned at intermediate incline（47）And stopper（50）Between, intermediate incline（47）Inside forms anti-reverse platform（471）, locking Area（49）The anti-reverse platform of both sides（471）And stopper（50）Madial wall be planomural, the madial wall of both sides is used for limit Raised line（38）It is limited, lock room（49）Lower end formed limiting platform（52）, limiting platform（52）For coordinating above-mentioned limit Position raised line（38）The plane of lower end（382）, the slideway（6）With lock room（49）In needle tubing mounted base（46）Outer wall at be in It is alternately distributed, adjacent slideway（6）Between be equipped with a lock room（49）；

The lock room（49）Lower edge be equipped with protrude from needle tubing mounted base（46）The limited block of outer wall（48）, the limited block （48）With above-mentioned spacing collar（34）Cooperation, for stopping spacing collar（34）It shifts up.

2. according to safe insulin needle shown in claim 1, it is characterised in that：The needle stand（4）By superposed needle tubing Mounted base（46）With the assembly cavity positioned at lower part（41）It constitutes, needle tubing mounted base（46）Outer diameter be less than assembly cavity（41）'s Outer diameter, needle tubing mounted base（46）With assembly cavity（41）Junction form cricoid needle stand platform（43）, assembly cavity（41）'s Inside spin is formed on interior cavity wall（53）.

3. the application method of safe insulin needle, it is characterised in that：The step of application method, is as follows：

, safe insulin needle is screwed into novopen, needle stand clockwise（4）Assembly cavity（41）Internal thread（53）With pancreas islet The external screw thread in plain tip of the brushstyle of a writing or painting portion coordinates, and during rotating clockwise, can drive limited step（351）With limit plane（451） It gradually touches and is finally engaged, sheath is extracted for preventing（3）When pull out safety shield；

, at this point, safety shield salient point（381）With the lower salient point of needle stand（51）Interference fit, salient point（381）Positioned at lower salient point （51）Lower section, for preventing safety shield is non-artificial from shifting up；

, after the completion of injection, spin safe sheath counterclockwise in place, makes limited step（351）End face with limit plane（451） Separation；

, then, pull up safety shield, salient point（381）Finally up over upper salient point（42）, at this point, upper salient point（42） To salient point（381）Form temporary reverse limit, spacing collar（34）Resist limited block upwards（48）, for safety shield to Upper shift-in row limit；

, at this point, rotate clockwise safety shield, limit raised line（38）Easily pass through intermediate incline（47）, slide into lock room（49） It is interior；

, slide into lock room（49）Both sides be respectively formed anti-reverse platform（471）And stopper（50）, in anti-reverse platform（471） And stopper（50）Restriction effect under, limit raised line（38）It can not all be rotated in Fang Shangxiang suitable, counterclockwise；

, on axis direction, limit raised line（38）Lower face plane（382）It is limited platform（52）Limit, spacing collar （34）It is limited block（48）Limit can not move completion certainly at this point, safety shield is suitable, reverse rotation and upper and lower displacement are limited Lock, above-mentioned needle tubing is fully wrapped around firmly by safety shield, and safety protection function is triggered.