CN2601101Y

CN2601101Y - Multifunctional safety needle sleeve

Info

Publication number: CN2601101Y
Application number: CN 03245073
Authority: CN
Inventors: 汪贤宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-11
Filing date: 2003-04-11
Publication date: 2004-01-28
Anticipated expiration: 2013-04-11

Abstract

The utility model relates to a multifunctional safe needle sheath device, which comprises at least a casing pipe unit, a longitudinal long cylinder base unit and a pinhead unit; wherein, the casing pipe unit is a hollowed pipe body with a sliding groove; the front end of the unit is provided with an opening for the pinhead unit to flex; the longitudinal cylinder base unit is a hollowed pipe body with a protruding part surrounding and the rear end can be arranged on various traditional syringe cylinder and the front end is provided with a step section for the pinhead unit to fix and enables the casing pipe unit to have the protruding part to slide in the sliding groove and receive a good guidance. Thereby, in the principle that the original syringe cylinder and the pinhead structures are not changed, the device composes a flexible subcutaneous pinhead safe device and arranges the operating position behind the pinhead, so as to ensure safeness in use.

Description

Multifunctional safe needle guard device

Technical field

This utility model is relevant a kind of multifunctional safe needle guard device, refers to a kind of need not to change original injection cylinder and syringe needle especially.

Background technology

General traditional safe injection needle barrel structure, as the 6093170th exposure of United States Patent (USP), comprise an injection tube (barrel) 10, a plunger (plunger) 20 and a sleeve pipe (sleeve) 30, wherein, injection tube 10 and plunger 20 are syringe commonly used, and the principal character of this patent is the preceding distal process of existing injection tube 10 is established a protuberance (tab) 13, and on sleeve pipe 30, establish long u shape guide groove 33, utilize stop section 35 protuberances 13 of the bottom land of this guide groove 33, be with, in actual use, the safety of this sleeve pipe 30 may be deceived, and its reason is that this sleeve pipe 30 is penetrated for plastic material and made shape, this stop section 35 has the elasticity of plastic material itself, making 35 pairs of these protuberances 13 in this stop section is not locking fully, and is to make protuberance 13 be moved out of use once again, and its safety is lost to the greatest extent.Moreover, this injection tube 10 with protuberance 13 is in order to be complementary with sleeve pipe 30, protuberance 13 can be slided in guide groove 33 smoothly, its dimensions is subjected to influence is set need does appropriateness change of protuberance 13, cause syringe cylinder can't continue to use the international standards of use original structure for a long time, this not only expends high die cost, and and the compatible interoperability between within the trade homotype product is subjected to suitable restriction, that is can't be implemented on other injection cylinder of the same type, especially, after changing original structure, the watertight structure that makes the smoothness of

syringe cylinder

10 and 20 operations of plunger and injection thereof with and the safety used all be difficult to the technical problem that overcomes and demand improvement urgently.

Novel content

Main purpose of the present utility model is to provide a kind of multifunctional safe needle guard device, allow and used the syringe needle that has been polluted, can be quickly and effectively with syringe needle retraction and deadlock in the lock groove of safety needle guard, in case promptly can't be moved out of use once again after making the syringe needle retraction, to guarantee its safety.

Of the present utility model time a purpose is to provide a kind of multifunctional safe needle guard device, wherein, this tube unit system is solid with the simple and easy tight cover that engages bridge between injection cylinder as needle unit with the cylindrical shell base unit, and various traditional injection cylinders needn't be done under any change, this tube unit directly is sheathed on different various traditional injection cylinders, thereby can makes and the utlity model has the compatibility and the suitability widely.

The further purpose of this utility model is to provide a kind of multifunctional safe needle guard device, wherein, this tube unit can be placed in the periphery of the lengthwise cylindrical shell base unit of injection cylinder, lengthwise cylindrical shell base unit front end is provided with class's section and can fixes for needle unit, and make the tube unit cover fashionable, tube unit just can move on the periphery of lengthwise cylindrical shell base unit, and is subjected to good guiding; By this, reach the practical purpose of easy operating.

This utility model is in order to reach above-mentioned purpose and effect, the technological means that this device adopted comprises: a lengthwise cylindrical shell base unit, overlaps the tube unit that the needle unit and that is fixed in this lengthwise cylindrical shell base unit is placed in this lengthwise cylindrical shell base unit periphery, wherein

This lengthwise cylindrical shell base unit, for front end has one than the path body, the body rear end has one than the large-diameter pipe body, this respectively is provided with a flange on diameter opposite position in its back-end than the large-diameter pipe body, this two flanges system can screw togather or be solidly plugged in the front end of this injection cylinder, and is provided with a protuberance in this than large-diameter pipe body front end peripheral part;

This needle unit closely cover be fixed in this lengthwise cylindrical shell base unit front end than on the path body;

This tube unit is a hollow tube, its periphery has a long chute, this chute comprises always to a portion and a transverse part, wherein, directly comprise a front end stopper section, turning point, a rear end to portion, this transverse part comprises that then a square location indentations, a locking square groove and are located at the portion that places restrictions on of locking square groove upstream end, and this portion of placing restrictions on is that a slice assembly and the unitary bulk material of safe needle guard fuse;

By this, this tube unit can be placed in the periphery of this cylindrical shell base unit, and the protuberance on this cylindrical shell base unit just can move in the microscler chute of this tube unit, and be subjected to good guiding, when this protuberance moved to this microscler chute front end stopper section, the needle unit that is fixed in this cylindrical shell base unit front end was stretched out the front end of tube unit in order to the injection use; When this protuberance button terminates in turning point, the traversing section rear end location indentations of microscler chute, this needle unit is shunk in the tube unit and be subjected to hiding completely; Cross this when this protuberance by location indentations and place restrictions on portion and when being locked in the locking square groove, this protuberance is that deadlock is in the locking square groove, and tube unit can not be moved again, and this needle unit is shunk in the tube unit and stop motionlessly, thereby constitute the safety device of hypodermic needle independently.

The use the beneficial effects of the utility model are: the hypodermic needle safety device that can be widely applicable for various injection cylinder, and its operating position is positioned at the rear of syringe needle, the nursing staff is in use, do not have the anxiety of stabbing accidentally or being subjected to viral infection fully, and can guarantee the safety that it uses.

Description of drawings

For further understanding feature of the present utility model, technological means and the concrete function of being reached, purpose, enumerate now of the present utility model than specific embodiment, continue describe in detail with graphic, figure number as after:

Graphic being described as follows:

Fig. 1 is the perspective exploded view of this utility model one preferred embodiment

Figure 1A is the three-dimensional enlarged diagram of the protuberance of this utility model one preferred embodiment;

Fig. 2 is the profile of this utility model one preferred embodiment unused state;

Fig. 2 A is the local amplification profile of Fig. 2;

Fig. 3 is the profile of this utility model one preferred embodiment user mode;

Fig. 4～Fig. 6 is first to the 3rd operating state key diagram of this utility model first preferred embodiment;

Fig. 7 is the section action diagram from the 7-7 of Fig. 5 line;

Fig. 8 is the section action diagram from the 6th Fig. 8-8 line;

Fig. 9 is the schematic perspective view of this utility model second preferred embodiment;

Figure 10 is the schematic perspective view of this utility model the 3rd preferred embodiment;

Figure 11 is the schematic perspective view of this utility model the 4th preferred embodiment;

The specific embodiment

This utility model multifunctional safe needle guard device first preferred embodiment, as shown in Figure 1 to Figure 3, may be implemented in the injection catheter joint of hypodermic injection cylinder 10 or some drop bottle, this device comprise at least 11 of connecting portions that are fixed in this needle unit 40 and injection cylinder 10 with simple and easy tight cover as the lengthwise cylindrical shell base unit 30 and that engages bridge be placed on the tube unit 20 of cylindrical shell base unit periphery, wherein

This cylindrical shell base unit 30, for front end has one than path body 33, the body rear end has one than large-diameter pipe body 35, this respectively is provided with a flange 351 on diameter opposite position in its back-end than large-diameter pipe body 35, this two flange 351-351 can be screwed together in the endoporus that the front end of injection catheter joint of this injection cylinder or some drop bottle maybe will be somebody's turn to do than large-diameter pipe body 35 and directly be solidly plugged on the connecting portion 11 of injection cylinder 10, and is provided with a protuberance 34 in this than large-diameter pipe body 35 front end peripheral parts; This protuberance 34, can make any feasible shape with following lock groove 225 mutual lockings, in a preferred embodiment of the present utility model, shown in Figure 1A, this protuberance 34 makes low early and high after, and a right low left side is high, the shape of slightly showing D shape section so that card ends protuberance 34 be easy to be set in the tube unit 20 after, promptly be difficult for being moved out of again after being easy to be limited in the following lock groove 225 again.In detail, this protuberance 34 comprises a D shape face 341, second trapezoidal faces 342, the 3rd D shape face 343, the 4th trapezoidal faces 344, end face 345 and bottom surface 346, wherein, this protuberance 34 be characterised in that except that bottom surface 346 and end face 345 for the square, first 341 area is greater than second, second greater than the 3rd successively, the 3rd greater than fourth face, and end face 345 is an arc inclined plane, promptly be cambered surface by second 342 higher past lower fourth face 344, simultaneously, also done the arc inclination by first towards the 3rd face again, snapped in locking square groove 225 interior (knowing clearly as described later) smoothly so that card ends protuberance 34.

This tube unit 20, be hollow tube 21 with a chute 220, the top of this chute 220 is covered by a dust cap 22, to meet health, these body 21 front ends are provided with a perforate 21B, can for the syringe needle 41 of needle unit 40 by flexible, the length of this chute 220 is less than the length of body 21, in a preferred embodiment of the present utility model, as shown in Figure 1, this chute is a T type chute 220, comprise always to a portion 221 and a transverse part 222, wherein, directly comprise a front end stopper section 221F to portion 221, one rear

end turning point

221R, 222 of this transverse parts comprise the square location indentations 224 of first (left side) end, the locking square groove 225 and one of second (right side) end is located at the portion that places restrictions on 227 of locking square groove 225 upstream ends.

By this, be fixed in cylindrical shell base units 30 before the injection tube 10 and can be tube unit 20 and be inserted in, and protuberance 34 just can guide mobilely in chute 220, and be subjected to good guiding, syringe needle 41 can be capable of expansion and contraction in tube unit 20; When the protuberance 34 of cylindrical shell base unit 30 in new product anteposition to be used in the location indentations 224 of traversing section 221 when (as shown in Figure 4); can make needle unit 40 before not using, be hidden in interior and protected; and the needle point 41a that makes syringe needle 41 is subjected to hiding completely protection; and then constitute a needle safety apparatus independently; and by cylindrical shell base unit 30 rear ends 35 connecting portion 11 of the injection cylinder 10 that is fixed in of cover, as Fig. 2-shown in Figure 3.

It is shown in Figure 8 to see also Fig. 2, when desire is implemented injection, can be earlier the protuberance 34 self-align recesses 224 of base unit 30 be shifted out (as Fig. 5 and shown in Figure 7), via traversing section 222, turning point 221R and in chute 220, move forward, at this moment, the syringe needle 41 of needle unit 40 can stretch out when protuberance 34 moves to front end stopper point 221F from the front end perforate 21B of tube unit 20, and syringe needle 41 promptly exposes fully, and form a telescopic needle safety apparatus, as Fig. 2-shown in Figure 3; Because the operating position of hand grip sleeve pipe unit 20 is positioned at the rear of syringe needle 41 all the time, need not needle point 41a through syringe needle 41; Therefore, unexpected in the use have the facts of stabbing or be subjected to viral infection to take place, and have safety.

And when injection finishes, 20 of tube units need contrary operation, protuberance 34 is promptly along front end stopper section 221F, turning point, the rear end 221R of chute 220 and traversing section 222 and when moving to the location indentations 224 of rear end, needle unit 40 promptly is hidden within the tube unit 20 once again, promptly replys hypodermic needle and does not use preceding as Fig. 5 and guard mode shown in Figure 7; When base unit 30 is screwed in a clockwise direction, protuberance 34 is just entered in the locking square groove 225 by location indentations 224, as Fig. 6 and shown in Figure 8, at this moment, protuberance 34 is just crossed the portion of placing restrictions on 227 and is entered in the locking square groove 225, in a single day protuberance 34 enters behind the locking square groove 225 promptly by block in locking square groove 225, as shown in Figure 8, because it is a lot of that the end face of protuberance 34 left side is higher than the root edge height of the portion of placing restrictions on 227, after so in a single day protuberance 34 enters locking square groove 225, placed restrictions on stopping of portion 227, protuberance 34 exhausted difficult skidding off outside the portion of placing restrictions on 227.So, can guarantee that the needle point 41a of needle unit 40 is hidden within the tube unit 20 forever, not have the anxiety of stabbing.Because in this process, the operating position of hand grip sleeve pipe unit 20 is positioned at the rear of syringe needle 41 all the time, need not needle point 41a through syringe needle 41; Therefore, unexpected fully have the facts of stabbing or be subjected to viral infection to take place, and have safety; This architectural feature, real is the place of main characteristic of the present utility model.

Should illustrate around here, be of the present utility model one preferable executing really in the example in order to guarantee that further condom pipe unit 20 is perfectly safe in the use, allow used contaminated pinhead 41 during in needle stand unit 40 toward interior retraction after blocking, stop to be moved out of once again use, special traversing section 222 left side sections with T type chute 220 are made to be had and protuberance 34 friction tight location indentations 224, right section is made has one via entering friction tight locking square groove 225 behind the block of placing restrictions on portion 227 again, because tube unit 20 is the plastics ejection formation, reach in design in the selection of material, be painstakingly to design order to place restrictions on portion 227 and have favorable elasticity and obdurability, to make protuberance 34 by placing restrictions on after portion 227 belows buckle in the locking square groove 225, place restrictions on portion 227 and still keep the intensity of its former tool, the bulk material of placing restrictions on portion 227 as seen from the figure and be a slice assembly and condom pipe unit 20 fuses.

For the purpose of easy on making operation, shown in Fig. 1 and Figure 1A, the arc sloped top face towards the right side from a left side is as mentioned above made at the top of protuberance 34, promptly be cambered surface by second 342 higher past lower fourth face 344, simultaneously, also done the arc inclination by first 341 towards the 3rd 343 again, during with handled easily tube unit 20, protuberance 34 is easy to cross the portion of placing restrictions on 227 and enters in the locking square groove 225, in case right protuberance 34 enters behind the locking square groove 225 promptly by block in locking square groove 225, as Fig. 6 and shown in Figure 8, because it is a lot of that the end face of protuberance 34 left side is higher than the root edge height of the portion of placing restrictions on 227, so after in a single day protuberance 34 enters locking square groove 225, placed restrictions on stopping of portion 227, protuberance 34 exhausted difficult skidding off outside the portion of placing restrictions on 227.So, the syringe needle 41 of needle stand unit 40, in case in the retraction needle guard unit 20 and after making protuberance 34 lock locking square groove 225, not only can not injure medical matters or other personnel of contact needle tubing again, and used syringe needle can not be used once again, this joint cleans the probability that is utilized for the less-developed countries worthless fellow once again with exhausted syringe needle and eradicates fully, and this is to be the topmost intention of this utility model place, explanation in the lump sincerely.

Another feature of this utility model intention is the middle periphery of the tube unit 20 of the foregoing description is added an on-slip bulge loop 23, to make things convenient for the user finger grip, and at tube unit 20 rear end inwalls shown in Fig. 2 A, form a loudspeaker expanded hole 228 and a shoulder 229 again, since the overall size D1 of external diameter that the height of protuberance 34 adds upper shell base unit 30 less than the maximum inner diameter D3 of loudspeaker expanded hole 228 greater than the minimum diameter D2 of loudspeaker expanded hole 228, this one defines characteristics such as the favorable elasticity that plastic material has of adding tube unit 20 and obdurability, when not only helping injection cylinder 10 with tube unit 20 combinations, these cylindrical shell base unit 30 cards end protuberance 34 and are easy to insert in the tube unit 20, and more can simplify the shaping dies structure of tube unit 20, otherwise card ends the height of protuberance 34 adds the overall size D1 of external diameter of upper shell base unit 30 much larger than the size of the internal diameter of tube unit 20, can't make these cylindrical shell base unit 30 cards end protuberance 34 directly is inserted in the tube unit 20, the rear end of tube unit 20 must be formed a crack again, after this cylindrical shell base unit 30 cards of waiting end protuberance 34 and are inserted in the tube unit 20, again this crack is sealed to give the thermal bonding mode, make the shaping dies structure and the assembling of tube unit 20 all quite loaded down with trivial details, this joint is to be another feature of the present utility model.

See also Fig. 9-shown in Figure 10, operation instruction for this utility model second and three embodiment, in second embodiment of the present utility model, this utility model safety needle sleeve device is implemented on elongated subcutaneous injection cylindrical shell 10A, and this lengthwise cylindrical shell base unit 30, overlapped admittedly by the connecting portion 11A of elongated injection cylinder 10A by lengthwise cylindrical shell 30 rear ends 35, as shown in Figure 9; In like manner, in the 3rd embodiment of the present utility model, this utility model safety needle sleeve device is implemented on large-diameter pipe subcutaneous injection cylindrical shell 10B, and this lengthwise cylindrical shell base unit 30, overlapped solid by the connecting portion 11B of large-diameter pipe injection cylinder 10B by lengthwise cylindrical shell 30 rear ends 35, as shown in figure 10, and can as Fig. 2-Fig. 3 and Fig. 4-mode shown in Figure 8 of above-mentioned this utility model first embodiment implement; And this architectural feature is identical with above-mentioned this utility model first embodiment substantially, and relevant explanation is omitted.

See also shown in Figure 11, in the 4th embodiment of the present utility model, this utility model may be implemented in drop catheter adapter 70, and this lengthwise cylindrical shell base unit 30, also can be fixed on the female thread of connecting portion 71 of drop catheter adapter 70 by cylindrical shell pedestal 35 back end boss 351, and embed connecting portion 71 by flange 351, to increase its constant intensity; And can implement as the 2-3 of above-mentioned this utility model first embodiment and the mode shown in the 4-8 figure; And this architectural feature is identical with above-mentioned this utility model first embodiment substantially, and relevant explanation is omitted.

Intend the lay special stress on explanation around here, it is a kind of by tube unit, lengthwise cylindrical shell base unit, and the needle safety apparatus that constituted such as needle unit to be the topmost intention spirit of this utility model is to provide, promptly the tube unit of this needle safety apparatus is solid with the simple and easy tight cover that engages bridge between injection cylinder as needle unit with the cylindrical shell base unit, and make operating position be positioned at the rear of syringe needle all the time, stab accidentally with in avoiding using, and guarantee its safety; Therefore, need not to change under the principle of any original various traditional injection cylinders and needle head structure, can directly overlap and be fixed in various traditional subcutaneous injection cylindrical shell or the drop catheter adapter, and can have the compatibility and the suitability widely, and operation is very easy; Its architectural feature and the space kenel that is constituted are real to be this utility model intention institute distinctive feature.

The locking means of the protuberance to protuberance and guide groove and the guide groove (i.e. card end square groove or square button ends recess) are the special case that the corner explanation is lifted in the above-mentioned preferred embodiment of this utility model, not limited thereto, other still has many means that are equal to can support use, for example, protuberance 34 can change square body or polyhedral body into, the T guide groove can change into L shaped or I shape guide groove, and with turning point, rear end 221R and location indentations 224 both integrate also belong to feasible.

Claims

1. multifunctional safe needle guard device, be applicable to the injection cylinder of various hypodermic needles, this safety device comprises that a lengthwise cylindrical shell base unit, overlaps the tube unit that the needle unit and that is fixed in this lengthwise cylindrical shell base unit is placed in this lengthwise cylindrical shell base unit periphery, is characterized in that:

This lengthwise cylindrical shell base unit, for front end has one than the path body, the body rear end has one than the large-diameter pipe body, this respectively is provided with a flange on diameter opposite position in its back-end than the large-diameter pipe body, this two flange can screw togather or be solidly plugged in the front end of this injection cylinder, and is provided with a protuberance in this than large-diameter pipe body front end peripheral part;

2. multifunctional safe needle guard device according to claim 1 is characterized in that, this protuberance and chute can be provided with in pairs to increase guide function, when tube unit is moved back and forth on lengthwise cylindrical shell base unit, have more stability.

3. multifunctional safe needle guard device according to claim 1 is characterized in that, this protuberance is a D shape protuberance, and this D shape protuberance comprises that a side is that an arc sections and opposite side are a flat part.

4. multifunctional safe needle guard device according to claim 1 is characterized in that, the body rear end of this lengthwise cylindrical shell base unit can be rotated with or be solidly plugged in the connecting portion of various different subcutaneous injection cylindrical shells or drop catheter adapter.

5. multifunctional safe needle guard device according to claim 1 is characterized in that, this microscler chute is a long T type chute.

6. multifunctional safe needle guard device according to claim 1 is characterized in that, this microscler chute is a long L type chute.

7. multifunctional safe needle guard device according to claim 1, it is characterized in that, the protuberance of this cylindrical shell base unit further comprises one the one D shape face, one second trapezoidal faces, one the 3rd D shape face, one the 4th trapezoidal faces, one end face and a bottom surface, wherein, the bottom surface of this protuberance 34 and end face are square, first area is greater than second, second greater than the 3rd successively, the 3rd greater than fourth face, and end face is an arc inclined plane, promptly is cambered surface by second higher past lower fourth face, simultaneously, also done the arc inclination by first towards the 3rd face again, be able to snap in smoothly in the locking square groove by the portion of placing restrictions on so that card ends protuberance.

8. multifunctional safe needle guard device according to claim 1 is characterized in that, this hollow tube is provided with an anti-slip ring in its periphery again.

9. disposable safety needle guard device according to claim 1, it is characterized in that, form a loudspeaker expanded hole and a shoulder at tube unit rear end inwall, and the top of this protuberance is made from low early and high after arc sloped top face, be easy to insert in the tube unit to make things convenient for this cylindrical shell base unit protuberance.

10. disposable safety needle guard device according to claim 1 is characterized in that, the root edge height that is higher than the portion of placing restrictions on the left of the end face of this protuberance is a lot of, so after in a single day protuberance enters the locking square groove, placed restrictions on stopping of portion, protuberance is difficult to skid off outside the portion of placing restrictions on.