TWI551320B - Safety syringe - Google Patents

Description

Safety injection device

The present invention relates to a safe injection device, and more particularly to a safety injection device that can hide a needle after use.

After using the existing injection device to apply the medicine to the patient, the medical staff needs to put the sleeve back on the needle and discard it to avoid the infection of the patient caused by needle stick injury. However, during the process of putting the sleeve back onto the needle, the medical staff is at risk of being stabbed by the needle. Furthermore, when the injection device is discarded, the sleeve may also fall off, increasing the chance that the medical waste disposal personnel will be injured by the needle. Thus prior art injection devices still have a relatively high risk after use.

It is an object of the present invention to provide a safe injection device that can hide a needle after use to solve the problems of the prior art.

The safety injection device of the present invention comprises a body, an injection needle, a carrier and a limiting unit. A first groove is formed on the body. The injection needle includes a first needle portion for connecting to an infusion tube to connect the injection needle to the infusion tube, and a second needle portion bent relative to the first needle portion. The carrier is rotatably disposed on the body for carrying the injection needle, wherein when the carrier is in a first position, the second needle is exposed to the body, and when the carrier is located at the first In the second position, the second needle portion is received in the first recess. The limiting unit is movably disposed on the body, the limiting unit includes a first limiting portion for preventing the carrier from rotating relative to the body when the carrier is in the first position, and a second limit The portion is configured to prevent the carrier from rotating relative to the body when the carrier is in the second position.

In an embodiment of the present invention, the body has a first end and a second end. The carrier is disposed at the first end of the body. When the first limiting portion is fixed to the first end of the body, The first restriction limits the carrier in the first position to prevent the carrier from rotating relative to the body.

In an embodiment of the present invention, a first recessed structure is formed on the first end of the body, and a second recessed structure is formed on the first restricting portion corresponding to the first recessed structure, when the first restricting portion is fixed to the first recessed portion The first recessed structure and the second recessed structure limit movement of the second needle portion to prevent the carrier from rotating relative to the body.

In an embodiment of the invention, the body further includes a fixing structure disposed at the second end of the body, wherein the fixing structure fixes the second limit when the first limiting portion is fixed to the first end of the body At the second end of the body.

In an embodiment of the present invention, the body has a first end and a second end. The carrier is disposed at the first end of the body. When the second limiting portion is fixed to the first end of the body, The second restriction limits the carrier in the second position to prevent the carrier from rotating relative to the body.

In an embodiment of the present invention, a first engaging structure is formed on the carrier, and a second engaging structure is formed on the second restricting portion corresponding to the first engaging structure, and when the second restricting portion is fixed to When the first end of the body is engaged, the first engaging structure and the second engaging structure are engaged to prevent the bearing seat from rotating relative to the body.

In an embodiment of the invention, the limiting unit further includes a connecting portion connected between the first limiting portion and the second limiting portion.

In an embodiment of the invention, the connecting portion is bendable.

In an embodiment of the invention, a passage is formed in the body to allow the connecting portion to pass.

In an embodiment of the invention, a second recess is formed in the body for receiving the infusion tube.

Compared with the prior art, the safety injection device of the present invention can easily hide the injection needle in the first groove of the body by rotating the carrier, so that the safety injection device of the present invention can omit the sleeve from being returned to the needle. Steps to avoid the risk of being pinched by the needle. Furthermore, when the injection needle is hidden in the first recess of the body, the safety injection device of the present invention can prevent the injection needle from being exposed again, thereby reducing the chance of the medical waste disposal personnel being injured by the needle. Therefore, the safety injection device of the present invention has better safety.

Please also refer to Figures 1 to 3. 1 is a schematic view of the safety injection device of the present invention before being folded, FIG. 2 is an exploded view of the safety injection device of FIG. 1, and FIG. 3 is a schematic view of the safety injection device of FIG. 1 at another angle. As shown, the safety injection device 100 of the present invention includes a body 110, an injection needle 120, a carrier 130, and a restriction unit 140. A first groove 116 and a second groove 118 are formed on the body 110. The injection needle 120 includes a first needle portion 122 and a second needle portion 124. The first needle portion 122 is for connecting to an infusion tube (not shown) to connect the injection needle 120 and the infusion tube. The infusion tube can be received in the second recess 118 on the body 110. The second needle portion 124 is bent relative to the first needle portion 122. The carrier 130 is rotatably disposed on the body 110 for carrying the injection needle 120. For example, the first needle 122 of the needle 120 can pass through the carrier 130 to enable the needle 120 to rotate with the carrier 130. The limiting unit 140 is movably disposed on the body 110. The limiting unit 140 includes a first limiting portion 142 and a second limiting portion 144. The first restricting portion 142 and the second restricting portion 144 are respectively configured to prevent the carrier 130 from rotating relative to the body 110 in different states. The limiting unit 140 can further include a connecting portion 146 connected between the first limiting portion 142 and the second limiting portion 144. The connecting portion 146 is bendable. Furthermore, a channel 113 may be formed on the body 110 to allow the connecting portion 146 to pass.

When the safety injection device 100 of the present invention is in a state before being folded, the carrier 130 is located at a first position P1. When the carrier 130 is in the first position P1, the second needle 124 is exposed to the body 110 for injection. The body 110 has a first end 112 and a second end 114 . The carrier 130 is disposed at the first end 112 of the body 110 . A first recessed structure 111 is formed on the first end 112 of the body 110, and a second recessed structure 143 is formed on the first restricting portion 142 corresponding to the first recessed structure 111. When the first restricting portion 142 is fixed to the body 110 At one end 112, the first recessed structure 111 and the second recessed structure 143 may restrict the movement of the second needle portion 124 (ie, restrict the carrier 130 from being in the first position P1) to further prevent the carrier 130 from rotating relative to the body 110. In the above embodiment, the configurations of the first recessed structure 111 and the second recessed structure 143 are merely examples, and the invention is not limited thereto. In other embodiments of the present invention, the first restricting portion 142 may limit the movement of the second needle portion 124 and/or the carrier 130 by other structures to prevent the carrier 130 from rotating relative to the body 110.

On the other hand, the body 110 can further include a fixing structure 115 disposed on the second end 114 of the body 110. When the first limiting portion 142 is fixed to the first end 112 of the body 110, the fixing structure 115 can fix the second limiting portion 144 to the second end 114 of the body 110 to prevent the second limiting portion 144 and the connecting portion 146 from swinging around. . Moreover, the fixed structure 115 can also prevent the first restriction portion 142 from leaving the first end 112 of the body 110 during injection.

Please refer to Figure 4. Figure 4 is a schematic illustration of the safe injection device of the present invention in a collapsed state. As shown in FIG. 4, when the safety injection device 100 of the present invention is to be folded after the injection is completed, the second restricting portion 144 can be disengaged from the fixing structure 115 first. In this way, the user only needs to press the first restricting portion 142 to release the first restricting portion 142 away from the first end 112 of the body 110.

Please also refer to Figures 5 and 6. Figure 5 is a schematic illustration of the safe injection device of the present invention after folding. Figure 6 is a schematic view of the safety injection device of Figure 5 at another angle. As shown, when the user presses the first restricting portion 142 to disengage the first restricting portion 142 from the first end 112 of the body 110, the second needle portion 124 is no longer restricted by the first restricting portion 142. In other words, the carrier 130 can be rotated relative to the body 110. When the carrier 130 is rotated from the first position P1 to the second position P2, the second needle portion 124 is received in the first recess 116 of the body 110. In order to prevent the second needle portion 124 from being exposed again and injuring the person, the second restricting portion 144 may be fixed to the first end 112 of the body 110 to restrict the bearing seat 130 from being located at the second position P2 and preventing the bearing seat 130 from being opposite to the body 110. Turn. For example, a first engaging structure 132 can be formed on the bearing base 130, and a second engaging structure 145 can be formed on the second restricting portion 144 corresponding to the first engaging structure 132. When the first engaging structure 132 and the second engaging structure 145 are engaged, the second restricting portion 144 is fixed to the first end 112 of the body 110, and the second restricting portion 144 is opposite to the first end of the body 110. 112 to prevent the carrier 130 from rotating relative to the body 110. In the above embodiment, the configurations of the first engaging structure 132 and the second engaging structure 145 are merely examples, and the invention is not limited thereto. In other embodiments of the present invention, the second restricting portion 144 may be fixed to the first end 112 of the body 110 or engaged with the bearing seat 130 by other structures to prevent the bearing seat 130 from rotating relative to the body 110.

According to the above configuration, when the safety injection device 100 of the present invention is in use, the restriction unit 140 can restrict the carrier 130 from being in the first position P1 and prevent the carrier 130 from rotating relative to the body 110 to facilitate the user to inject with the second needle 124. When the safety injection device 100 of the present invention is in use, the restriction unit 140 can restrict the carrier 130 from being in the second position P2 and prevent the carrier 130 from rotating relative to the body 110 to prevent the second needle 124 from being exposed again to injure the person.

Compared with the prior art, the safety injection device of the present invention can easily hide the injection needle in the first groove of the body by rotating the carrier, so that the safety injection device of the present invention can omit the sleeve from being returned to the needle. Steps to avoid the risk of being pinched by the needle. Furthermore, when the injection needle is hidden in the first recess of the body, the safety injection device of the present invention can prevent the injection needle from being exposed again, thereby reducing the chance of the medical waste disposal personnel being injured by the needle. Therefore, the safety injection device of the present invention has better safety. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100‧‧‧Safe injection device
110‧‧‧ body
111‧‧‧First recessed structure
112‧‧‧ body first end
113‧‧‧ channel
114‧‧‧The second end of the body
115‧‧‧Fixed structure
116‧‧‧First groove
118‧‧‧second groove
120‧‧‧Injection needle
122‧‧‧First needle
124‧‧‧Second needle
130‧‧‧Hosting
132‧‧‧First engagement structure
140‧‧‧Restriction unit
142‧‧‧First Restriction Department
143‧‧‧Second recessed structure
144‧‧‧ Second Restriction Department
145‧‧‧Second snap-in structure
146‧‧‧Connecting Department
P1‧‧‧ first position
P2‧‧‧ second position

Figure 1 is a schematic view of the safety injection device of the present invention prior to folding. Figure 2 is an exploded view of the safety injection device of Figure 1. Figure 3 is a schematic view of the safety injection device of Figure 1 at another angle. Figure 4 is a schematic illustration of the safe injection device of the present invention in a collapsed state. Figure 5 is a schematic illustration of the safe injection device of the present invention after folding. Figure 6 is a schematic view of the safety injection device of Figure 5 at another angle.

100‧‧‧Safe injection device

110‧‧‧ body

111‧‧‧First recessed structure

112‧‧‧ body first end

113‧‧‧ channel

114‧‧‧The second end of the body

115‧‧‧Fixed structure

116‧‧‧First groove

118‧‧‧second groove

120‧‧‧Injection needle

122‧‧‧First needle

124‧‧‧Second needle

130‧‧‧Hosting

132‧‧‧First engagement structure

140‧‧‧Restriction unit

142‧‧‧First Restriction Department

143‧‧‧Second recessed structure

144‧‧‧ Second Restriction Department

145‧‧‧Second snap-in structure

146‧‧‧Connecting Department

Claims (10)

A safety injection device comprising: a body having a first recess formed therein; an injection needle comprising: a first needle portion for connecting to an infusion tube to connect the injection needle to the infusion tube And a second needle portion bent relative to the first needle portion; a carrier seat rotatably disposed on the body for carrying the injection needle, wherein when the carrier is in a first position The second needle portion is exposed to the body. When the carrier is in a second position, the second needle portion is received in the first groove; and a limiting unit is movably disposed The first limiting portion is configured to prevent the carrier from rotating relative to the body when the carrier is in the first position, and a second limiting portion for the carrier to be located at the first The two positions prevent the carrier from rotating relative to the body. The safety injection device of claim 1, wherein the body has a first end and a second end, the carrier is disposed at the first end of the body, and the first limiting portion is fixed to the body At one end, the first restriction limits the carrier in the first position to prevent the carrier from rotating relative to the body. The safety injection device of claim 2, wherein a first recessed structure is formed on the first end of the body, and a second recessed structure is formed on the first restricting portion corresponding to the first recessed structure, when the first When the limiting portion is fixed to the first end of the body, the first recessed structure and the second recessed structure limit movement of the second needle portion to prevent the bearing seat from rotating relative to the body. The safety injection device of claim 2, wherein the body further comprises a fixing structure disposed at the second end of the body, wherein the fixing structure is fixed when the first limiting portion is fixed to the first end of the body The second limiting portion is at the second end of the body. The safety injection device of claim 1, wherein the body has a first end and a second end, the carrier is disposed at the first end of the body, and the second restriction is fixed to the body At one end, the second restriction limits the carrier in the second position to prevent the carrier from rotating relative to the body. The safety injection device of claim 5, wherein a first engaging structure is formed on the carrier, and a second engaging structure is formed on the second limiting portion corresponding to the first engaging structure, and the second When the limiting portion is fixed to the first end of the body, the first engaging structure and the second engaging structure are engaged to prevent the bearing seat from rotating relative to the body. The safety injection device of claim 1, wherein the limiting unit further comprises a connecting portion connected between the first limiting portion and the second limiting portion. The safety injection device of claim 7, wherein the connecting portion is bendable. The safety injection device of claim 7, wherein the body is further formed with a passage for allowing the connection portion to pass. The safety injection device of claim 1, wherein a second recess is formed in the body for receiving the infusion tube.