TWI698264B - Self-destructive retractable safety needle - Google Patents

Abstract

The present invention relates to a self-destructive retractable safety needle. The main structure includes an injection needle including a needle cylinder and a push cylinder. The two ends of the needle cylinder respectively define a needle cylinder inlet and a needle cylinder outlet. The side of the syringe adjacent to the exit of the syringe defines a snap-off throat, a syringe combined body accommodating area is defined in the syringe, and the push tube is connected by a push tube sealing soft sleeve joint and a push tube piston part. Position a push tube sealing soft sleeve, the side of the syringe outlet part is provided with an integral function combination body, the integral function combination body is provided with a combination body liquid outlet and a combination body combination part that can be combined with a needle, and the syringe and the whole There is a latching device and a limit stop device between the function combination body, and a self-destruction device is arranged between the push cylinder and the overall function combination body. The self-destruction device includes a self-destruction joint component and a self-destruction positioning component. A needle tilting device and an airtight device are defined on the function combination body, so that the push cylinder and the overall function combination body can be combined through the self-destructing device to bring the needle into the syringe through the needle tilting device to prevent recurrence Advantages of using and improving safety.

Description

Self-destructive retractable safety needle

The present invention is to provide a self-destructing retractable safety needle, especially a self-destructing device that can actively combine the push-tube part of the needle cylinder with the integral function combination body after the liquid in the needle cylinder is injected, and then the needle The retractable belt is brought into the syringe and the needle is tilted to prevent the self-destructive retractable safety needle from being used again.

By the way, because injection needles are medical supplies that come into contact with human tissues or blood, they are basically disposable supplies after one use. However, there are still many unscrupulous industry players who recycle needles for reuse or multiple people. Common use of the same injection needle is a very dangerous behavior for patients. Therefore, many countries have begun to legislate the use of disposable safety needles to prevent this situation.

General safety needles can be divided into methods in which a sleeve can be installed on the needle after use to prevent reuse, or the push cylinder will be clamped into the syringe after use. However, if a safety needle with a safety sleeve is used, if you use If you do not actively install the sleeve after finishing, it will not be able to achieve the effect of protection and one-time use. When using the safety needle with the push cylinder locked in the syringe, although the effect of self-destruction can be achieved after use, the needle will be Exposed to the outside of the syringe, it is still possible to accidentally touch the needle, which is dangerous.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the inventor of the present invention and related manufacturers engaged in this industry urgently want to study and improve.

Therefore, in view of the above-mentioned deficiencies, the inventor of the present invention collected relevant information, evaluated and considered from many parties, and based on years of experience in this industry, through continuous trials and modifications, he designed such an active self-destruct effect In addition, the needle can be retracted into the barrel, and the needle can be tilted in the barrel to increase safety. The inventor of the self-destructive retractable safety needle.

The main purpose of the present invention is to combine the push cylinder with the integral function combination body through the self-destructing device, and then use the snap-off device to make the integral function combination body can pull the needle into the syringe by pulling and shrinking, so as to increase safety.

Another main purpose of the present invention is to pull the needle into the barrel through the needle tilting device, and make the needle tilt, so as to achieve the advantages of preventing reuse and improving safety.

Another main purpose of the present invention is to prevent the entire functional combination from rotating in the syringe through the combined body limiting and stopping portion in the limiting and stopping device to prevent the needle from being tightly installed .

The other main purpose of the present invention is to use the inclined offset bearing portion to press against the self-destructing engaging rod hooking portion, thereby shortening the distance between the push cylinder sealing soft sleeve and the inclined pressing portion, resulting in an excellent pushing effect and making the whole The function combination body drives the needle head to produce a slanted pendulum movement in the needle cylinder with the tilting pitch bearing part as the axis.

In order to achieve the above object, the main structure of the present invention includes: an injection needle including a syringe and a pusher movably arranged at the end of the syringe, a syringe inlet defined at one end of the syringe, and a syringe defined at The outlet portion of the syringe at the other end of the syringe, a syringe combination accommodating area defined in the syringe, at least one combination portion of the push tube sealing soft sleeve defined on the push tube, and at least one sleeve defined on the push tube The push cylinder piston part, at least one push cylinder sealing soft sleeve positioned on the push cylinder through the push cylinder sealing soft sleeve coupling part and the push cylinder piston part, an integral function combination body located in the syringe combination body containing area, one The combined body joint part defined on the overall function combined body, a combined body liquid outlet defined on the overall function combined body, a snap-off device defined between the overall function combined body and the syringe, and one defined in the overall function A limit stop device between the combined body and the syringe, a self-destruct device defined between the integrated function combined body and the push tube, a snap-off pin defined on the syringe, and a built-in functional combined body The needle tip tilting device on the upper part and an airtight device defined on the integral function combination body.

Wherein the snap-off device includes at least one syringe snap-off portion defined on the syringe, and at least one combined body snap-off portion defined on the integral function combination body, and the limit stop device includes at least one snap-off portion defined on the syringe The needle cylinder limit stop portion on the snap-off portion and at least one combined body limit stop portion defined on the snap-off portion of the combined body, the self-destruct device includes a self-destruct joint component defined on the push cylinder and A self-destructing positioning component defined on the integral function combination body, and the self-destructing joint component includes a self-destructing joint rod connected to the push cylinder, and a self-destructing joint rod formed at the end of the self-destructing joint rod The hook portion and the self-destructing positioning component include a self-destructing positioning perforation portion formed on the integral function combination body, and at least one self-destructing positioning hook portion formed on the side of the self-destructing positioning perforation portion. The needle tilting device includes an oblique pressing portion provided on the integral function combination body, and an inclined offset bearing portion provided on the integral function combination body, and the airtight device includes an air tightness formed on the integral function combination body A sealing ring joint part and at least one airtight elastic ring joined to the airtight ring joining part.

With the above-mentioned structure, the user can first engage the combined body engaging and disengaging part of the integrated functional combination on the syringe locking and releasing part before injection, thereby engaging the integrated functional combined body on the syringe, and then The needle is installed on the combined body joint through the position of the barrel outlet part, thereby combining the needle on the overall functional combined body, and when the needle is installed, it can be stopped by the combined body in the limit stop device The part abuts against the limit stop part of the needle barrel to prevent the integral function combination body from rotating in the needle barrel, resulting in the inability to tightly install the needle.

The push tube can penetrate into the syringe at the entrance of the syringe, and the sealed soft sleeve of the push tube pushes the liquid medicine, so that the liquid medicine is injected into the human body through the combined body liquid outlet and the needle. When the medicine liquid is injected, The piston part of the push tube and the joint part of the push tube sealing soft sleeve will be completely combined with the positioning push tube sealing soft sleeve to push the liquid medicine, and the airtight elastic ring in the airtight device will be completely engaged with the airtight ring. On the upper part and against the syringe to prevent the liquid medicine from flowing out of the gap between the integral function combination body and the syringe.

After the injection of the drug solution is completed, the self-destructing joint component of the self-destructing device will be combined with the self-destructing positioning component to combine the push cylinder with the overall function combination body, that is, the self-destructing joint rod in the self-destructing joint component will pass through Into the self-destructing positioning perforation part of the self-destructing positioning assembly, and engaging the self-destructing coupling rod hook portion on the self-destructing positioning hook portion, thereby combining the push cylinder with the overall function combination body, and the user Only by applying force, the engaging and disengaging part of the combined body can pass over the locking and disengaging part to get out of the locking and disengaging part of the syringe, thereby pulling the pushing tube and the integral function combination toward the entrance of the syringe, and simultaneously the needle Pull into the syringe, when the needle is drawn into the syringe, the inclined pressure part will press the push tube sealing soft sleeve and push the integrated function combination body to tilt through the elasticity of the push tube sealing soft sleeve. At this time, the overall function combination body That is to say, the tilting distance bearing part is used as the axis to generate a deflection pendulum action, thereby making the needle tilt in the barrel, so that the needle will not be aligned with the outlet of the barrel, so that even if someone pushes the barrel again, the barrel is still It will not pass through the exit part of the syringe, so it can prevent others from touching the needle again to improve the safety of use.

With the above-mentioned technology, a breakthrough can be made against the conventional sleeve-type safety needles that cannot actively self-destruct and the self-destructive safety needles still have safety problems, so as to achieve the practical advancement of the above advantages.

1, 1a, 1b, 1c‧‧‧Injection needles

11, 11a, 11b‧‧‧ Syringe

111‧‧‧Syringe inlet

112‧‧‧Syringe Outlet

113‧‧‧Syringe combined body containing area

114‧‧‧Tilt needle stop

115c‧‧‧Needle marking coding part

12、12a、12b‧‧‧Pushing cylinder

121‧‧‧Push tube sealing soft sleeve joint

122‧‧‧Push cylinder sealing soft sleeve combined guide

123‧‧‧Pushing cylinder piston

124‧‧‧Push cylinder sealing soft sleeve positioning reset part

125‧‧‧Push tube sealing soft sleeve

126a‧‧‧Self-destruction Warning Department

127b‧‧‧Push cylinder cutout

13a‧‧‧Needle operating device

131a‧‧‧Pushing cylinder operation part

132a‧‧‧Syringe operation part

14b‧‧‧Needle anti-detachment device

141b‧‧‧Syringe cylinder anti-off limit

1411b‧‧‧Syringe cylinder anti-falling combination guide

142b‧‧‧Push cylinder anti-dropping limit

1421b‧‧‧Push cylinder anti-drop combined guide

2, 2a, 2b‧‧‧Integral function combination

21‧‧‧Combination joint

22‧‧‧Combined body liquid outlet

3‧‧‧Cut off device

31, 31a‧‧‧Combined body snap-off part

311a‧‧‧Combination card release guide sliding part

32, 32a‧‧‧Syringe cylinder snap-off part

321a‧‧‧Sliding part of needle cylinder

33‧‧‧Katuo Pass

4‧‧‧Limit stop device

41‧‧‧Combined body limit stop

42‧‧‧Syringe cylinder limit stop

5, 5a, 5b‧‧‧Self-destructing device

51, 51a‧‧‧Self-destructing joint assembly

511‧‧‧Self-destructing joint rod

512‧‧‧Self-destructing joint lever hook

513‧‧‧Self-destructing joint lever elbow

514‧‧‧Self-destructing joint rod contraction part

52, 52a‧‧‧Self-destructive positioning component

521‧‧‧Self-destructive positioning perforation part

522‧‧‧Self-destructive positioning hook

523‧‧‧Self-destructive positioning guide

524‧‧‧Self-destructive positioning shrinkage diversion part

6‧‧‧Needle tilting device

61‧‧‧Tilt pressure part

62‧‧‧Tilt Offset Bearing

63‧‧‧Sloping storage area

7‧‧‧Air-tight device

71‧‧‧Airtight ring joint

72‧‧‧Air-tight elastic ring

73‧‧‧Airtight elastic ring anti-drop part

8‧‧‧Combined corrective guiding device

81‧‧‧Combined body correction guide

82‧‧‧Syringe correction guide

9, 9b, 9c‧‧‧Needle

91c‧‧‧Needle Cover

The first figure is a cross-sectional view of the first embodiment of the present invention.

The second figure is an exploded view of the first embodiment of the invention.

The second diagram A is a partial schematic diagram (1) of the first embodiment of the present invention.

The second diagram B is a partial schematic diagram (2) of the first embodiment of the present invention.

The second diagram C is a partial schematic diagram (3) of the first embodiment of the present invention.

The second diagram D is a partial cross-sectional view of the first embodiment of the present invention.

The third figure is a schematic diagram of the use of the first embodiment of the present invention.

The fourth figure is a schematic diagram of the engagement of the first embodiment of the present invention.

The fifth figure is a schematic diagram of the self-destruction of the first embodiment of the present invention.

The sixth figure is a schematic diagram of the separation of the first embodiment of the present invention.

The seventh figure is a schematic diagram of the swing of the first embodiment of the present invention.

The eighth figure is an exploded view of the second embodiment of the present invention.

The ninth figure is a warning diagram of the second embodiment of the present invention.

The tenth figure is a schematic diagram of the separation of the second embodiment of the present invention.

Figure eleven is an exploded view of the third embodiment of the present invention.

Figure 12 is a schematic diagram of the combination of the third embodiment of the present invention.

Figure 13 is a schematic diagram of the fracture of the third embodiment of the present invention.

Figure 14 is a front view of the fourth embodiment of the present invention.

In order to achieve the above-mentioned purposes and effects, the technical means and structure adopted by the present invention are illustrated in detail below to illustrate the features and functions of the preferred embodiments of the present invention for a complete understanding.

Please refer to Figures 1 to 2 D, which are cross-sectional views to partial cross-sectional views of the first embodiment of the present invention. From the figures, it can be clearly seen that the present invention includes: an injection needle 1 including There is a syringe 11 and a push tube 12, the two ends of the syringe 11 are respectively defined as a syringe inlet 111 and a syringe outlet 112, and the push tube 12 is movably arranged at one end of the syringe inlet 111 ; A syringe combined body accommodating area 113 defined in the syringe 11, the syringe combined body accommodating area 113 is located adjacent to the side of the syringe outlet 112; a push cylinder sealing soft sleeve defined on the push cylinder 12 Combination part 121; a push cylinder sealing soft sleeve combination guide portion 122 defined on the push cylinder sealing soft sleeve joint 121; a push cylinder piston part 123 defined on the push cylinder 12, the push cylinder piston 123 is located on the push cylinder One side of the soft sealing sleeve joint 121; a soft sealing sleeve 125 for a push cylinder, the soft sealing sleeve 125 of the push cylinder is coupled to the push cylinder 12 via the soft sealing sleeve joint 121 and the piston 123 of the push cylinder; A push cylinder sealing soft sleeve positioning return portion 124 defined at the side of the push cylinder sealing soft sleeve joint 121; an integrated function combination body 2 located in the syringe combination body containing area 113, and the overall function combination body 2 defines a The combined body joint 21 and a combined body liquid outlet 22, the combined body joint 21 can be combined with a needle 9. In this embodiment, a threaded locking method is used, but it is not limited; one is defined in the whole The locking and disengaging device 3 between the function combination body 2 and the syringe 11, the locking and disengaging device 3 includes at least one combination body locking and disengaging portion 31 defined on the integral function combination body 2 and at least one defined on the syringe 11 The syringe locking and disengaging portion 32. In this embodiment, the combined body locking and disengaging portion 31 is a protrusion formed on the integral function combination body 2, and the syringe locking and disengaging portion 32 is formed on the syringe 11 and has a shape and a combination body The recessed portion corresponding to the snap-off portion 31, but it is not limited; one is defined in the syringe 11 and located at the side of the snap-off portion 32 of the syringe 33; and one is defined by the integrated function combination body 2 and the syringe The limit stop device 4 between 11, the limit stop device 4 includes at least one combined body limit stop portion 41 defined at the side of the combined body detachment portion 31, and at least one defined on the syringe detachment portion The needle cylinder limit stop 42 at the side of the part 32; a self-destruct device 5 defined between the integral function combination body 2 and the push cylinder 12, the self-destruct device 5 includes a self-destruct joint defined on the push cylinder 12 The component 51, and a self-destructing positioning component 52 defined on the integral function combination body 2, wherein the self-destructing joint component 51 includes at least one self-destructing joint rod 511 connected to the push cylinder 12, and a self-destructing joint The self-destruct joint rod hook portion 512 at the end of the rod 511, a self-destruct joint rod elbow part 513 defined at the side of the self-destruct joint rod 511, and a self-destruct joint rod elbow part 513 defined at the side of the self-destruct joint rod elbow 513 The destruction joint rod contraction part 514, and the self-destruction positioning component 52 includes a self-destruction positioning perforation portion 521 formed on the integral function combination body 2 and at least one self-destruction positioning hook formed at the side of the self-destruction positioning perforation portion 521 Part 522, at least one self-destruct positioning guide part 523 at the side of the self-destruct positioning hook part 522, and at least one self-destruct positioning contraction and expansion guide part 524 at the side of the self-destruct positioning perforation part 521; one at The needle tilting device 6 on the integral function combining body 2, and the needle tilting device 6 includes an inclined pressing portion 61 provided on the integral function combining body 2, and a tilting offset arranged at the side of the self-destructing positioning hook portion 522 The bearing portion 62, and an inclined accommodating area 63 defined at the side of the inclined offset bearing portion 62; an inclined needle stopper 114 defined on the syringe 11; an airtight device provided on the integral function combination body 2 7, and the airtight device 7 includes at least one shape The airtight ring connecting portion 71 formed on the integral function combination body 2, at least one airtight elastic ring 72 connected to the airtight ring connecting portion 71, and one defined at the side of the airtight ring connecting portion 71 The airtight elastic ring anti-falling portion 73; and a combined correction guide device 8 defined between the integral function combination body 2 and the syringe 11, the combination correction guide device 8 includes at least one defined in the integral function combination body The combined body correcting guide portion 81 on 2 and at least one syringe correcting guide portion 82 defined on the syringe 11.

Based on the above description, the structure of this technology can be understood, and according to the corresponding cooperation of this structure, the automatic self-destruction can be achieved after the injection is completed, and the overall function combination 2 and the needle 9 can be tilted in the barrel 11 , In order to increase the advantage of safety after use, and the detailed explanation will be explained below.

Please also refer to the first to seventh figures, which are the cross-sectional view to the swing diagram of the first embodiment of the present invention. When the above-mentioned components are assembled, it can be clearly seen from the figure that the user must first The function combination body 2 is placed in the syringe combination body accommodating area 113 of the syringe 11, and the correction guiding effect of the combination correction guide portion 81 is matched with the syringe correction guide portion 82 in the combination correction guide device 8 , Very smoothly align the coupling part 31 on the overall function coupling body 2 with the syringe locking part 32 in the locking device 3, and the coupling part 31 and the syringe locking part 32 are mutually locked合, by which the integrated function combination body 2 is combined with the syringe 11, the needle 9 can be inserted into the syringe 11 from the position of the syringe exit portion 112 and locked on the combination combination portion 21. In this embodiment The combined body correcting guide portion 81 and the syringe correcting guide portion 82 are inclined surfaces corresponding to each other, but they are not limited. When the needle 9 is locked on the combined body connecting portion 21, the limit stop device The needle barrel limit stop portion 42 and the combination body limit stop portion 41 in 4 will interfere with each other to prevent the integral function combination body 2 from rotating in the syringe barrel 11, and the needle 9 can be tightly locked to the combination body joint portion 21 to prevent leakage, but it is not limited.

When the push tube sealing soft sleeve 125 is combined with the push tube 12, it will be smoothly and quickly engaged with the push tube piston part 123 and the push tube sealing soft sleeve through the guiding effect of the push tube sealing soft sleeve combination guide part 122 To prevent the push-tube sealing soft sleeve 125 from detaching, the push-tube 12 will penetrate into the syringe 11 at the syringe entrance 111, and the push-tube sealing soft sleeve 125 will be completely attached to the inner wall of the syringe 11 , To push the liquid medicine in the syringe 11 into the human body through the combined body liquid outlet 22 and the needle 9, and when the push tube 12 is used to drive the push tube sealing soft sleeve 125, the push tube piston part 123 and the push tube The interlocking effect of the tube sealing soft sleeve joint part 121 makes the push tube sealing soft sleeve 125 completely combined and positioned on the push tube 12, and when the medicine is injected, the airtight elastic ring 72 in the airtight device 7 It is connected to the integral function combination body 2 through the airtight ring joint 71, and when the syringe 11 and the integral function When the combination body 2 is combined, the air-tight elastic ring part 73 can be used to prevent the air-tight elastic ring 72 from sliding due to pushing, causing the air-tight elastic ring 72 to disengage and shift out of the air-tight ring joint 71 In this way, the airtight elastic ring 72 is completely positioned against and tightly squeezed on the inner wall of the syringe 11 to prevent the liquid medicine from flowing out of the gap between the integral function combination body 2 and the syringe 11, causing unnecessary Waste and prevent air from entering when the liquid is sucked.

After the injection of the liquid medicine in the syringe 11 is completed, the self-destructing joint component 51 and the self-destructing positioning component 52 in the self-destructing device 5 will be combined with each other. The combination method is: the self-destructing joint rod 511 will pass through the self-destructing Destruct the positioning perforated portion 521, so that the self-destruct joint lever hook portion 512 is engaged with the self-destruct positioning hook portion 522. When the self-destruct joint rod 511 passes through the self-destruct positioning perforation portion 521, it will pass The guiding effect of the destroy positioning guide portion 523 pushes the self-destruct joint rod 511 to move inward to the self-destruct joint rod contraction part 514, and the self-destruct positioning hook part 522 moves outward to the self-destruct positioning contraction part 514 In the diversion part 524, after the self-destruct joint rod hook portion 512 passes through the self-destruct positioning perforation part 521, the self-destruct joint rod 511 will rebound to the original position by the elastic force given by the self-destruct joint rod elbow 513 As a result, the self-destructing joint lever hook portion 512 is engaged with the self-destructing positioning hook portion 522, and the push cylinder 12 can be combined with the integral function combination body 2 through the self-destructing joint component 51 and the self-destructing positioning component 52 In order to achieve the effect of active self-destruction, to prevent others from using the injection needle 1 again, but it is not limited.

After that, the user can apply force to pull the push tube 12 toward the syringe inlet 111 to drive the push tube 12 and the overall function combination body 2 to act, wherein the combination body engaging and disengaging part 31 is connected to the syringe engaging and disengaging part 32 is disengaged, so that the engagement and disengagement part 31 of the combined body crosses the blocking of the disengagement pass part 33 and enters the syringe 11, thereby driving the needle 9 into the syringe 11 together. At this time, the tilting and pressing part 61 in the needle tilting device 6 Correspondingly press the push-tube sealing soft sleeve 125, and the push-tube sealing soft sleeve 125 will be guided by the resetting effect of the push-tube sealing soft sleeve positioning and returning part 124, which can make the push-tube sealing soft sleeve 125 incline and resist pressure due to resistance during injection The position of the part 61 produces an excellent positioning effect and ensures that it can be returned to the original position after being moved. That is, the push cylinder sealing soft sleeve 125 will position the return part 124 along the inclined surface of the push cylinder sealing soft sleeve (in this embodiment) The positioning return portion 124 of the push cylinder sealing soft sleeve is an inclined surface that can assist the sliding of the push cylinder sealing soft sleeve 125, but it is not limited). When it is pushed in the direction of the self-destructing joint rod 511, the push cylinder sealing soft The sleeve 125 will not be clamped above the self-destructing joint rod 511, so that the push cylinder sealing soft sleeve 125 can ensure sufficient pushing force against the tilting and pressing portion 61 deflection pendulum action, otherwise if the push cylinder seal occurs If the soft sleeve 125 is clamped, the soft sleeve 12 cannot be sealed by the push cylinder. 5 Generate sufficient pushing force for the deflection pendulum action, causing the function defect of the needle tilting device 6. At the same time, the tilting offset bearing portion 62 will press against the self-destructing coupling rod hook portion 512, thereby shortening the push cylinder sealing soft sleeve The distance between 125 and the inclined pressing portion 61 produces an excellent pushing effect, and allows the overall function combination body 2 to use the inclined offset bearing portion 62 as the axis to cooperate in the needle cylinder 11 to produce a deflection pendulum action, but It is not limited, and the tip of the self-destructing joint lever hook portion 512 will enter the inclined accommodating area 63 to make the kinetic energy of the deflection pendulum of the integral function combination body 2 smoother and prevent the combination from being pressed The inclination angle reverse force generated at the time causes the function of the needle tilting device 6 to be defective, and when the integral function combination body 2 is actuated in a deflection, it will drive the needle 9 to move in the cylinder 11 to make the needle 9 Deviate from the position of the barrel outlet 111, and move the tip of the needle 9 to align with the inclined needle stop 114, so that the needle 9 can be stored in the barrel 11 to prevent danger from touching others, even if someone When you want to push the push tube 12 to push the needle 9 out again, the needle 9 will also resist and stop on the inclined needle stop 114, and will not pass through the syringe exit 112, so the needle 9 can be completely received in the syringe 11. To increase the overall security, but it is not limited.

Please also refer to Figures 8 to 10 at the same time, which are the exploded view to the separated schematic view of the second embodiment of the present invention. It can be clearly seen from the figures that this embodiment is similar to the above embodiment. The self-destructing device 5a in the example further includes a self-destructing warning portion 126a defined on the push cylinder 12a, and the injection needle 1a defines a needle operating device 13a, and the needle operating device 13a includes a self-destructing warning portion 126a defined on the push cylinder 12a. The upper push cylinder operating portion 131a and at least one syringe operating portion 132a provided on the syringe 11a can touch the push cylinder operating portion 131a and the syringe operating portion when the user sucks or injects the drug solution 132a, to drive the push cylinder 12a to move in the syringe 11a, and when the self-destruct joint assembly 51a and the self-destruct positioning assembly 52a are about to be combined, the position of the self-destruct warning portion 126a corresponds to the syringe operating portion 132a, thereby reminding The user self-destruct joint component 51a and the self-destruct positioning component 52a are about to self-destruct, but it is not limited.

In addition, in this embodiment, a syringe locking and disengaging guide sliding portion 321a is defined on the side of the syringe locking and disengaging portion 32a, and a combination body locking and disengaging guide sliding portion 311a is defined on the side of the combining body locking and disengaging portion 31a. The sliding part 321a is an inclined surface formed on the syringe locking and disengaging part 32a, and the coupling body locking and disengaging guide sliding part 311a is a bevel formed on the coupling body locking and disengaging part 31a, which can pass through the syringe locking and disengaging guide sliding part 321a and the coupling The mutual guidance of the body card disengagement guide sliding portion 311a makes the integral function combination body 2a detach from the syringe 11a more smoothly, but it is not limited.

Please also refer to Figures 11 to 13, which are the points of the third embodiment of the present invention. From the drawing to the broken schematic diagram, it can be clearly seen from the figure that this embodiment is similar to the above-mentioned embodiment. In this embodiment, the injection needle 1b defines a needle detachment prevention device 14b, and the needle detachment prevention device 14b includes There is a syringe anti-dropping limiting portion 141b defined on the syringe 11b, and a pushing-tube anti-dropping limiting portion 142b defined on the pushing barrel 12b, and a side of the syringe anti-dropping limiting portion 141b is defined The needle cylinder anti-falling combined guide portion 1411b, and a push cylinder anti-falling combined guide portion 1421b is defined at the side of the push cylinder anti-falling limit portion 142b, and the needle cylinder anti-falling combination guide portion 1411b and the push cylinder anti-falling The combined guide portion 1421b is respectively an inclined surface formed on the syringe anti-dropping-off limit portion 141b and the push-tube anti-dropping-off limit portion 142b, and defines a push-tube cutout portion 127b on the push-tube 12b, but it is not limited .

When the push cylinder 12b is about to enter the syringe 11b, the guide function of the needle cylinder anti-falling combination guide portion 1411b and the push cylinder anti-falling combination guide portion 1421b can be used to make the push cylinder 12b smoothly enter the syringe 11b, and After the injection is completed and the self-destructing device 5b combines the push cylinder 12b and the integrated function assembly 2b, the user will pull the push cylinder 12b to insert the integrated function assembly 2b and the needle 9b into the syringe 11b. The anti-dropping limit portion 142b abuts against the needle cylinder anti-dropping limit portion 141b, thereby preventing others from completely taking out the push cylinder 12b for reuse. At the same time, the push cylinder 12b can be broken at the push cylinder cut part 127b to allow the push cylinder 12b to be broken. It produces an irreversible one-time use effect and can completely prevent others from using the injection needle 1b again, but it is not limited.

Please also refer to the fourteenth figure, which is a front view of the fourth embodiment of the present invention. It can be clearly seen from the figure that this embodiment is similar to the above-mentioned embodiment. In this embodiment, the needle 9c is combined A needle cover 91c can prevent the injection needle 1c from being touched by others before the needle 9c is used to enhance the protective effect. A needle marking coding part 115c is defined on the injection needle 1c to allow the user to inject It can observe the amount of injected liquid medicine to improve the convenience of use. In addition to displaying the amount of liquid medicine, the needle marking coding part 115c can also code the injection needle 1c, such as printing A as a serial number. That is, when the injection needle 1c has a defect or defect, it can be quickly tracked for improvement, but it is not limited.

However, the above description is only the preferred embodiments of the present invention, which does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be the same. It is included in the scope of the patent of the present invention, and is hereby stated.

Therefore, the key to improving the conventional use of the self-destructing retractable safety needle of the present invention is:

1. Through the self-destruct device 5, the push cylinder 12 can achieve the effect of active self-destruct To prevent others from continuing to use disposable injection needles1.

2. After the injection device 3 is used, the user can pull the integrated function combination body 2 and the needle 9 into the syringe 11 to prevent the needle 9 from staying outside and causing danger.

3. Through the needle tilting device 6, the needle 9 can be completely retained in the syringe 11, and the needle 9 will be restricted to the tilting needle stop 114, and will not be pushed out of the exit of the syringe. 112 outside, so the needle 9 can be completely stored in the syringe 11 to achieve the irreversible self-destruct effect and increase the overall safety.

4. When the needle 9 is locked on the combined body joint part 21, the needle cylinder limit stop part 42 and the combined body limit stop part 41 in the limit stop device 4 will conflict with each other to prevent the overall function from being combined The body 2 rotates in the syringe 11, and the needle 9 can be tightly locked on the joint 21 to prevent liquid leakage.

5. Use the push cylinder sealing soft sleeve to position the return part 124 to prevent the push cylinder sealing soft sleeve 125 from being clamped on the self-destructing joint rod 511 and unable to return, and to make the push cylinder sealing soft sleeve 125 produce an excellent positioning effect and ensure After the movement, it can still return to the original position, so that the push cylinder sealing soft sleeve 125 can ensure that sufficient pushing force is generated to resist the inclined pressing portion 61 to perform a slanting swing.

6. Use the inclined offset bearing portion 62 to press against the self-destructing joint lever hook portion 512, thereby shortening the distance between the push tube sealing soft sleeve 125 and the inclined pressing portion 61, resulting in an excellent pushing effect, and making the overall functional combination body 2 Drive the needle 9 to produce a skew movement in the needle cylinder 11 with the tilting distance bearing 62 as the axis.

7. After the syringe 11 is combined with the integrated function combination body 2, the tip of the self-destructing coupling rod hook portion 512 will enter the inclined receiving area 63, so that the kinetic energy of the deflection pendulum of the integrated function combination body 2 will be smoother , In order to prevent the inclination angle reversal force generated when combined with the pressure, the function of the needle tilting device 6 is defective.

In summary, the self-destructing retractable safety needle of the present invention can indeed achieve its efficacy and purpose when used. Therefore, the present invention is an invention with excellent practicality. It meets the requirements of an invention patent application. The application is filed and I hope that the review committee will grant the invention as soon as possible to protect the inventor’s hard work. If the review committee has any doubts, please send us instructions and the inventor will do our best to cooperate with you.

1‧‧‧Injection needles

11‧‧‧Syringe

12‧‧‧Pushing cylinder

125‧‧‧Push tube sealing soft sleeve

3‧‧‧Cut off device

31‧‧‧Combined body card release part

32‧‧‧Syringe cylinder snap-off part

4‧‧‧Limit stop device

41‧‧‧Combined body limit stop

42‧‧‧Syringe cylinder limit stop

5‧‧‧Self-destructing device

51‧‧‧Self-destructing joint assembly

52‧‧‧Self-destructive positioning component

8‧‧‧Combined corrective guiding device

81‧‧‧Combined body correction guide

82‧‧‧Syringe correction guide

9‧‧‧Needle

Claims (21)

A self-destructive retractable safety needle, which mainly comprises: an injection needle, the injection needle comprising a needle cylinder and a push cylinder movably arranged at one end of the needle cylinder; a needle cylinder entrance part, the needle cylinder The entrance part is defined at one end of the syringe; a syringe exit part is defined at an end of the syringe facing away from the entrance part of the syringe, so that the push tube can be movably arranged at the exit part of the syringe At; at least one snapping pass, the snapping pass defined in the syringe, and located adjacent to the side of the syringe outlet; a syringe combined body containing area, the syringe combined body containing area Defined in the syringe and located on the side adjacent to the exit of the syringe; at least one push-tube sealing soft sleeve coupling portion, the push-tube sealing soft sleeve coupling portion is defined on the push cylinder; at least one push-tube piston portion , The push cylinder piston part is defined on the push cylinder, and is located at one side of the push cylinder sealing soft sleeve joint part; a push cylinder sealing soft sleeve, the push cylinder sealing soft sleeve is combined by the push cylinder sealing soft sleeve Part and the piston part of the push cylinder are combined and positioned on the push cylinder; an integral function combined body, the integral function combined body is located at the side of the syringe outlet; at least one combined body joint part, the combined body joint part is defined in A needle is provided on the integral function combination body; a combination body fluid outlet, the combination body fluid outlet is defined on the integral function combination body; a snap-off device, the snap-off device is defined on the integral function combination Body and the syringe, and the snap-off device includes at least one syringe snap-off portion defined on the syringe, and at least one combined body snap-off portion defined on the integral function combination body, the combination The body engaging and disengaging part is provided for corresponding engagement and disengagement from the syringe engaging and disengaging part; a limit stop device, the limit stop device is arranged between the integral function combination body and the syringe, and the limit stop The stop device includes at least one syringe limit stop portion defined on the syringe detachment portion, and at least one combination body limit stop portion defined on the combination detachment portion, for the overall function The combined body and the needle barrel correspond to each other to limit rotation; a self-destruct device, the self-destruct device is defined between the push cylinder and the integral function combination, and the self-destruct device includes a self-destruct defined on the push cylinder Joint components, and a combination The self-destructing positioning component on the body, the self-destructing joint component includes at least one self-destructing joint rod connected to the push cylinder, and a self-destructing joint rod hook portion formed at the end of the self-destructing joint rod , And the self-destructing positioning component includes a self-destructing positioning perforation part formed on the integral function combination body, and at least one self-destructing positioning hook formed at the side of the self-destructing positioning perforation part; a needle tilting device, The needle tip tilting device is provided on the integral function combination body, and the needle tip tilting device includes an inclined pressing part and a tilting distance bearing part which are all arranged on the integral function combining body, and the inclined pressing part is For correspondingly pressing the push cylinder sealing soft sleeve, and the inclined offset bearing portion is provided for abutting against the hooking portion of the self-destructing engagement rod, so as to cooperate with the inclined offset bearing portion through the inclined pressing portion so that the needle is in the needle The cylinder generates tilting action; and an airtight device, the airtight device is defined on the integral function combination body, and the airtight device includes at least one airtight ring joint part formed on the integral function combination body, And at least one airtight elastic ring connected to the airtight ring connecting part. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the self-destructing device further includes at least one self-destructing warning part defined on the push tube. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the self-destructing joint assembly further includes a self-destructing joint lever elbow part defined at the side of the self-destructing joint lever, and a self-destructing joint lever Destroy the joint rod contraction part. For the self-destructing retractable safety needle described in item 1 of the scope of the patent application, the self-destructing positioning assembly further includes at least one self-destructing positioning guide at the side of the self-destructing positioning hook. According to the self-destructing retractable safety needle described in item 1 of the scope of patent application, the self-destructing positioning assembly further includes at least one self-destructing positioning contraction and diversion part located at the side of the self-destructing positioning perforation part. According to the self-destructing retractable safety needle described in item 1 of the scope of patent application, the airtight device further includes at least one airtight elastic ring preventing part located at the side of the connecting part of the airtight ring. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein a combined correction guide device is defined between the integral function combination and the syringe, and the combined correction guide device includes at least one defined in The combined body on the integral function combined body corrects the guiding part. The self-destructing retractable safety needle described in item 7 of the scope of patent application, wherein the combined correction guide device further includes at least one needle barrel correction guide defined on the needle barrel. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the injection needle defines a needle detachment prevention device, and the needle detachment prevention device includes at least one needle defined on the syringe barrel cylinder The anti-dropping limit part and at least one push-tube anti-dropping limit part defined on the push cylinder. The self-destructing retractable safety needle described in item 9 of the scope of patent application, wherein the needle anti-detachment device further includes at least one needle cylinder anti-dropping combined guide portion defined on the needle cylinder anti-dropping limit portion . The self-destructing retractable safety needle described in item 9 of the scope of the patent application, wherein the needle anti-detachment device further includes at least one push-cylinder anti-dropping combination guide portion defined on the push-cylinder anti-dropping limit portion . The self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein a needle cover is attached to the needle. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the injection needle defines a needle operation device, and the needle operation device includes at least one push tube operation provided on the push tube Part, and at least one syringe operating part provided on the syringe. For the self-destructing retractable safety needle described in item 1 of the scope of patent application, the push tube defines at least one push tube notch. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the push tube defines at least one push tube sealing soft sleeve combination guide. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein at least one needle marking coding part is defined on the injection needle. According to the self-destructing retractable safety needle described in item 1 of the scope of patent application, the locking and disengaging device further includes at least one syringe locking and disengaging guide sliding part defined at the side of the syringe locking and disengaging part. According to the self-destructing retractable safety needle described in item 1 of the scope of the patent application, the engaging and disengaging device further includes at least one engaging and detaching guide sliding portion defined at the side of the engaging and detaching portion of the combined body. According to the self-destructing retractable safety needle described in item 1 of the scope of patent application, the needle tilting device further includes an inclined accommodating area defined at the side of the inclined offset bearing portion. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the needle barrel defines at least one inclined needle stopper. For example, the self-destructing retractable safety needle described in item 1 of the scope of patent application, wherein the needle tilting device further includes at least one push tube sealing soft sleeve positioning reset part, and the push tube sealing soft sleeve positioning reset part is located in the push tube The cylinder seals the side of the soft sleeve joint.

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