JP3177814U - Wing needle safety cap - Google Patents

Abstract

A safety cap for a winged needle capable of preventing a needle tip from protruding after use is provided.
In a safety cap of a winged needle, the safety cap used for covering the outside of the winged needle includes a first clamping piece and a second clamping piece. The first sandwiching piece 11 extends so that the first end portion 111 at the end of the first sandwiching piece 11 rises to the outside. The second holding piece 12 is connected to the connecting portion 13 together with the first holding piece 11 so that the second end 121 at the end of the second holding piece 12 rises outward corresponding to the first end 111. So that the safety cap 1 forms a needle cap port 14 between the two ends. The second clamping piece 12 has a locking piece 122 at a position corresponding to the recessed groove 112, and two front and rear guide grooves 151, 152 separated by the locking piece 122 between the two clamping pieces 11, 12. Form.
[Selection] Figure 1

Description

  The present invention relates to a safety cap for a winged needle.

  At present, there are many design configurations for medical winged needles. For example, “innovated configuration of safety cap with winged needles” disclosed in Taiwan Patent No. 221556 is one example. The feature of the patent is that it is provided with a hollow needle cap, and a groove is provided in the hollow needle cap. The distal end of which is provided with a needle guide groove that is an elongated rectangle, the front end of the needle guide groove is provided with a guide angle that is inclined in two, and the winged needle is attached to a safety cap, Moreover, the wing portion of the winged needle is locked in the needle guide groove of the safety cap.

However, since the “V” -shaped introduction port is directly formed at the front end of the needle cap in such a configuration, a phenomenon of widening the narrow groove occurs, and the front end of the needle groove has two inclined guiding angles. Provide. For this reason, when the winged needle receives an external force and pushes or vibrates, the winged portion of the winged needle is easily guided by an inclined guiding angle of the guiding groove and is easily slid out of the narrow groove. Therefore, the needle tip protrudes from the needle cap, and there is a risk that the needle tip sticks into a human hand or the like and is infected with a virus.
This invention is made | formed in view of the said problem, The objective is to provide the safety cap of the winged needle which can prevent a needle tip protruding after use.

  In view of the above problems, the inventor of the present application has improved the configuration of the safety cap of the winged needle to prevent repeated use of the safety cap of the winged needle the second time, and the guide groove formed between the two clamping pieces Through which the wings on the winged needle are restricted from reversing, and the tip of the winged needle is mounted between the first and second clamping pieces of the safety cap, thereby causing stab injury Avoiding the danger, the needle tip can not be used repeatedly, the safety cap can ensure the safety of use of the winged needle, and prevent the harmful effects of being used again after the needle tip is washed .

It is a perspective view which shows the safety cap by 1st embodiment of this invention. It is a perspective view which shows a mode when taking out the winged needle accommodated in the safety cap of FIG. It is a perspective view which shows a mode when a winged needle is stored in the safety cap of FIG. It is the figure which looked at the safety cap of FIG. 2 from the side. It is the figure which looked at the safety cap of FIG. 3 from the side. It is a perspective view which shows the place which uses the safety cap of FIG. 1 for another winged needle. It is a perspective view which shows the state which accommodated the other winged needle in the safety cap of FIG. It is a perspective view which shows the state which uses the safety cap of FIG. 1 at the time of blood collection. It is a perspective view which shows the state which uses the safety cap of FIG. 1 at the time of infusion. It is a disassembled perspective view which shows the safety cap by 2nd embodiment of this invention. It is a disassembled perspective view which shows the safety cap by 3rd embodiment of this invention. It is an assembly drawing of the safety cap of FIG. It is a perspective view which shows a mode when taking out the winged needle accommodated in the safety cap of FIG. It is a perspective view which shows a mode when storing a winged needle in the safety cap of FIG. It is the figure which looked at the safety cap of FIG. 13 from the side. It is the figure which looked at the state by which the winged needle was taken out from the safety cap of FIG. 13 from the side. It is the figure which looked at the safety cap of FIG. 14 from the side. It is a figure which shows the place which uses the safety cap of FIG. 11 for another winged needle. It is a perspective view which shows the place which uses the safety cap by 4th embodiment of this invention for a winged needle. It is a perspective view which shows the place which uses the safety cap by 5th embodiment of this invention for a winged needle. It is a perspective view which shows the state which stored the winged needle in the safety cap by 5th embodiment of this invention.

(First embodiment)
FIG. 1 is a perspective view showing a safety cap according to a first embodiment of the present invention. The safety cap 1 is used for mounting the winged needle 2.

  The safety cap 1 includes a first clamping piece 11 and a second clamping piece 12. The first holding piece 11 extends so that the first end 111 of the end faces outward, and the other end of the first holding piece 11 is connected to the connecting portion 13 together with the second holding piece 12. The second clamping piece 12 extends so that the terminal second end 121 corresponding to the first end 111 faces outward. The safety cap 1 forms a needle cap port 14 between the first end 111 and the second end 121.

  The first clamping piece 11 has concave groove 112 on both sides of its bottom surface, and the second clamping piece 12 forms a locking piece 122 at a location corresponding to the concave groove 112. The first holding piece 11 is connected to the connecting portion 13 together with the second holding piece 12, and two front and rear guide grooves 151 and 152 separated by the locking piece 122 are formed between the two holding pieces. The guide grooves 151 and 152 between the first sandwiching piece 11 and the second sandwiching piece 12 communicate with the outside, and communicate with each other with the guide hole 131 included in the connecting portion 13.

  The winged needle 2 has a needle tube fixing part 21. The needle tip 22 is fixed to one end of the needle tube fixing portion 21, and the infusion tube 3 can be connected to the other end. Further, the needle tube fixing portion 21 forms a wing piece 23 extending to the side thereof. When the infusion tube 3 is connected to the winged needle 2, the infusion tube 3 is inserted through the connecting portion 13 through the guide hole 131.

  FIG. 2 is a perspective view showing a state when the winged needle 2 housed in the safety cap 1 is taken out. FIG. 4 is a side view of the safety cap 1 of FIG. At the time of injection, the winged needle 2 is pulled out from the needle cap port 14 with the wing piece 23, and the infusion tube 3 is pulled out from the safety cap 1 together with the winged needle 2 after passing through the guiding grooves 151, 152 through the guiding hole 131. It is.

  FIG. 3 is a perspective view showing a state when the winged needle 2 is stored in the safety cap 1. FIG. 5 is a side view of the safety cap 1 of FIG. After the injection, the winged needle 2 is inserted into the needle cap port 14 of the safety cap 1 with the infusion tube 3 passing through the rear of the guide hole 131, so that the wing piece 23 of the winged needle 2 is first guided at the front end. After passing through the groove 151 and through the locking piece 122, it enters the guiding groove 152 at the rear end.

  The blade piece 23 that has entered the rear guide groove 152 cannot move back in the reverse direction to the front guide groove 151 due to the limitation of the locking piece 122. Therefore, as shown in FIG. 5, the needle tip 22 of the winged needle 2 is stored between the first clamping piece 11 and the second clamping piece 12 of the safety cap 1, and the needle tip 22 is placed in a human hand or the like. It is possible to prevent the needle from being stuck, and the needle tip 22 is never pulled out and used again. The safety cap 1 can ensure the safety of use of the winged needle 2 and prevent the adverse effect of being reused after the needle tip 22 is washed.

  The locking piece 122 has a shape of a structure that is not introduced in the reverse direction after being introduced according to the forward direction. As shown in FIG. 5, the locking piece 122 extends at an oblique arc and has a sharp end. The wing piece 23 of the winged needle 2 enters the rear guide groove 152 through the locking piece 122, and the wing piece 23 in the rear guide groove 152 is locked. It is locked by a plate piece having an oblique arc degree of the piece 122, and cannot move back to the front guide groove 151 in the reverse direction.

  The safety cap 1 can also be used in combination with a winged needle 2A as shown in FIGS. The difference between the winged needle 2A and the winged needle 2 is that the needle tube fixing portion 21 of the winged needle 2A has wing pieces 231A and 232A extending to both sides. The other configuration is the same as that of the winged needle 2, and the same reference numerals indicate the same parts and the description thereof is omitted.

  After using the winged needle 2 </ b> A, the infusion tube 3 behind the guide hole 131 is gripped, and the winged needle 2 </ b> A is stored in the needle cap port 14 of the safety cap 1. Since the blade pieces 231A and 232A that have entered the rear guide groove 152 cannot move back in the reverse direction to the front guide groove 151 due to the restriction of the locking piece 122, the needle tip 22 is as shown in FIG. It is stored between the first clamping piece 11 and the second clamping piece 12.

  When the safety cap 1 is used in combination with the winged needle 2 or the winged needle 2A, the rear end of the infusion tube 3 is connected to the blood collection tube 4 and the blood collection tube 5 as shown in FIG. 8, and is used for blood collection. Moreover, as shown in FIG. 9, the rear end of the infusion tube 3 is connected to an infusion tube 6 and an infusion bolt 7 and used for infusion.

(Second embodiment)
FIG. 10 is a perspective view showing a safety cap according to the second embodiment of the present invention. The safety cap 1 </ b> A is used for covering the outside of the winged needle 2.

  The main configuration of the safety cap 1A is the same as that of the safety cap 1 according to the first embodiment. The difference is that the other end of the first holding piece 11A is connected to the first connecting portion 131A, the first connecting portion 131A has a first connecting groove 1311A, and the second holding piece. 12A has a second connecting portion 132A for fitting the first connecting portion 131A corresponding to the first sandwiching piece 11A, and the second connecting portion 132A corresponds to the first connecting groove 1311A and the second connecting groove 1321A. It is having.

  The first clamping piece 11A is connected to the second coupling part 132A of the second clamping piece 12A via the first coupling part 131A. The safety cap 1A forms a needle cap port (not shown) between the first end 111A and the second end 121A, and is locked between the first clamping piece 11A and the second clamping piece 12A. By forming two front and rear guide grooves (not shown) separated by the piece 122A, the same effect as that of the first embodiment can be obtained.

(Third embodiment)
FIG. 11 is an exploded perspective view showing a safety cap according to the third embodiment of the present invention. The safety cap 1B is used for covering the outside of the winged needle 2A.

  The safety cap 1B has a first clamping piece 11B and a second clamping piece 12B. The first sandwiching piece 11B has a first end 111B at one end extending outward, and the second sandwiching piece 12B has a second end 121B at the end extending outward corresponding to the first end 111B. I'm out.

  The first clamping piece 11B has a recessed groove 112B and a convex locking part 113B on both sides of the bottom surface, and the second clamping piece 12B has a locking piece 122B at a position corresponding to the recessed groove 112B, A concave contact opening 123B is provided corresponding to the shape of the convex locking portion 113B.

  The outside of the first holding piece 11B has a first connecting hole 114B, and the second holding piece 12B corresponds to the first holding piece 11B and is used for fitting with the first connecting hole 114B. The second holding piece 12B can be fitted into the first connecting hole 114B of the first holding piece 11B as shown in FIG. 12 via the first connecting latch 124B.

  As shown in FIG. 12, it can be seen that the winged needle 2 </ b> A is localized at the rear position of the convex locking portion 113 </ b> B and the concave contact opening 123 </ b> B before being used, and exhibits a state of being used at any time.

  As shown in FIGS. 13 to 17, the guide grooves 151 </ b> B and 152 </ b> B between the first clamping piece 11 </ b> B and the second clamping piece 12 </ b> B communicate with the outside, and the infusion tube 3 is in the safety cap B. By pulling the winged needle 2A back and forth, and in the present embodiment, as shown in the drawing, the locking piece 122B becomes an oblique triangular plate piece, and one triangular plate piece is The base angle is smaller than 45 degrees to form the forward side, and the other base angle is approximately 90 degrees to form the reverse side, whereby the wing piece 23 of the winged needle 2A is moved in the order of the locking piece 122. The same effect as in the first embodiment can be obtained by passing through the side and entering the relatively wide rear end guide groove 152.

  As shown in FIG. 18, the safety cap 1 </ b> B is also used to cover the outside of the winged needle 2.

(Fourth embodiment)
FIG. 19 is a perspective view showing a safety cap according to a fourth embodiment of the present invention. The safety cap 1 </ b> C is used for covering the outside of the winged needle 2.

  The safety cap 1C has the same main configuration as the safety cap 1B of the third embodiment. Therefore, the description is omitted by adding C after the reference numeral. The difference between the two is that the first sandwiching piece 11C extends from the recessed groove 112C on the bottom surface of the groove return prevention piece 1121C, and the second holding piece 12C corresponds to the groove return prevention piece 1121C. The wing piece 23 of the winged needle 2 in the guiding groove 152C at the rear end has a locking piece 122C that crosses the direction, and goes backward to the guiding groove 151C at the front end due to the limitation of the groove return prevention piece 1121C and the locking piece 122C. The same effect as the third embodiment can be obtained.

(Fifth embodiment)
20 and 21 are perspective views showing a safety cap according to a fifth embodiment of the present invention. The safety cap 1D is used for covering the outside of the winged needle 2.

  The safety cap 1D has the same main configuration as the safety cap 1C according to the fourth embodiment. Therefore, the description is omitted by adding D after the reference numeral. The difference between the two is that the first clamping piece 11D extends from the recessed groove 112D on the bottom surface of the groove turning-in prevention piece 1121C, and the second clamping piece 12D corresponds to the recessed groove 112D. The wing piece 23 of the winged needle 2 that has a locking piece 122D that crosses the direction and that is in the guiding groove 152D at the rear end cannot go back to the guiding groove 151D at the front end due to the limitation of the locking piece 122D. The same effect can be obtained.

  What has been described above is merely an example of a preferred embodiment and is not intended to limit the technical scope of the present invention. Therefore, it can be implemented in other ways without departing from the spirit and essential specific matters.

DESCRIPTION OF SYMBOLS 1 ... Safety cap 1B ... Safety cap 2 ... Wing needle 3 ... Infusion tube 4 ... Blood collection tube 5 ... Blood collection tube 6 .... ... Drip cylinder 7 ... Drip bolt 11 ... First clamping piece 11B ... First clamping piece 11C ... First clamping piece 111 ... First end 111A ... One end 111B ··· First end 112B · · · concave groove 112C · · · concave groove 113B · · · convex locking portion 114B · · first connection hole 121A · · · second end 112 · · · concave groove 1121C · Trouble-returning piece 12 ····························· Second Pin 12B ····························· Second Pin · Locking piece 122B · · Locking piece 122C · · Locking piece 124B · · First connection latch 13 · · · Connection portion 131 · · .. Guide hole 131A... First link part 132A.. Second link part 1311A. First link groove 1321A. Second link groove 14... Needle cap port 151. .. Guide groove 152C ... Guide groove 152 ... Guide groove 21 ... Needle tube fixing part 22 ... Needle tip 23 ... Blade piece 231A ... Blade piece 232A ... Blade piece

Claims (8)

A safety cap used to cover the outside of the winged needle,
The safety cap includes a first clamping piece and a second clamping piece,
The first clamping piece extends so that the first end portion of the end rises outward, and has concave grooves on both sides of the bottom surface of the first clamping piece,
The second sandwiching piece is connected to the first sandwiching piece and extends so that the second end portion at the end corresponds to the first end portion and rises to the other outside. Forming a needle cap opening, forming a locking piece at a position corresponding to the concave groove, and forming two front and rear guiding grooves separated by the locking piece between the first clamping piece and Features a winged needle safety cap. The first clamping piece is connected to the connecting portion correspondingly with the second clamping piece,
The wing needle safety cap according to claim 1, wherein the guide groove communicates with the outside and communicates with the guide hole of the connecting portion. The winged needle is connected to an infusion tube;
The winged needle is inserted into the needle cap port, the wing piece is passed through the guide groove, and the winged needle is moved back by the limitation of the locking piece so that it cannot move back. The winged needle safety cap according to claim 1, wherein the safety cap is placed between the holding piece and the second holding piece. The other end of the first clamping piece is connected to a first connecting portion having a first connecting groove,
The second sandwiching piece has a second connecting portion corresponding to the first sandwiching piece and having a shape that fits into the first connecting portion,
2. The winged needle safety cap according to claim 1, wherein the first clamping piece is fitted to the second coupling portion of the second clamping piece via the first coupling portion. The second connecting portion has a second connecting groove corresponding to the first connecting groove,
The safety cap for a winged needle according to claim 1, wherein the first connection groove forms an opening together with the second connection groove. Convex locking portions are formed on both sides of the first clamping piece,
2. The winged needle safety cap according to claim 1, wherein the first clamping piece has a concave contact opening corresponding to the shape of the convex locking portion. The first clamping piece has a first connection hole,
The second clamping piece has a first connection latch that is used to fit into the first connection hole, corresponding to the first clamping piece,
The winged needle safety cap according to claim 1, wherein the second clamping piece is connected to the first connection hole via the first connection latch.   2. The safety cap for a winged needle according to claim 1, wherein the locking piece has a shape of a structure that is not introduced in reverse after being introduced in accordance with forward.

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