KR101845655B1 - Safety Cover for Pen type Syringe - Google Patents

Abstract

The present invention relates to a safety cover structure of a pen-type syringe (100), which comprises: a housing (110); an elastic providing means (120); a safety cover (130); and a guide groove structure (150). The safety cover structure of the pen-type syringe has an advantage that it is possible to return to an initial state depending on returning operation of a user to be suitable for continuous use in a repeated injection process.

Description

Safety Cover for Pen Type Syringe [0002]

The present invention relates to a safety cover for a pen-type syringe, and more particularly, to a safety cover for a pen-type syringe which is mounted on a syringe body 2 of a pen-type syringe 1 and which is provided to cover the ampule cartridge 3 and the pen needle unit 10 The safety cover includes a housing 110 mounted on the syringe body 2 and having a space opened upwardly and downwardly therein, elasticity providing means 120 installed in the housing 110, The housing 110 has a cylindrical shape with its upper and lower sides opened, and is installed inside the housing 110 so as to partially protrude above the housing 110 to prevent the pen needle unit 10 from being exposed to the outside. A safety cover 130 having the guide protrusions 131 formed thereon and movable in response to elasticity provided by the elastic providing means 120; ) Are respectively inserted and guided When the safety cover 130 is pushed downward by the attachment / detachment distance L1 from the initial position A, the safety cover 130 rises again to the initial position A and returns, When the safety cover 130 is rotated at the fixing position B, the safety cover 130 is moved up and fixed to the fixing position B. When the safety cover 130 is rotated at the fixing position B, A guide groove structure 150 for guiding the guide protrusion 131 to return to the initial position A; The present invention relates to a safety cover 100 of a pen-type syringe.

Pen-type syringes are used to inject infusions of injectable medicines regularly in doses of injections such as insulin injections of diabetics, injection of growth hormones of growing adolescents, patients with asthma, patients with arthritis, allergies, atopic patients, infertile women, Such a pen type syringe is made for the convenience of the user who needs to self-scan frequently by himself as described above.

Insulin is indispensable and must be administered to patients with type 1 diabetes, especially type 1 diabetes. Methods such as inhaled, patch, and oral forms of insulin have been developed and studied, The pen type syringe generally contains an injection medicament which can be injected several times to several tens of times, and a certain amount of the injection medicament can be injected into the human body by pushbutton .

In addition, the pen needle used in combination with the pen type syringe is a one-time product which is used by replacing the needle every time of use due to the risk of infection, and the pen needle is, as shown in Fig. 1 according to ISO 11608-2, A pen needle 11 including a needle hub 11a and a needle tube 11c, a needle-like cap 13, a needle cap 12, And a finishing rod (seal) 15 as one set, and the pen needle unit 10, all of which are once-consumable consumables. In particular, among the above-mentioned components, a cylindrical rod And a needle hub which is inserted through the needle is referred to as a pen needle 11.

The needles 11c fixedly mounted on the center of the pen needle 11 are significantly thinner and sharper than the needles attached to a general medical syringe and are made of a needle And the length of the metal foil is also very short, usually within 12 mm.

In order for the user to self-administer the injection drug, the user first removes the sterilization finish seal (seal) 15 from the needle fastening portion 3a provided at the upper end of the ampule cartridge 3 of the pen type syringe, The fastening portions 11b of the pen needles 11 accommodated in the fastening portions 13 are rotated and connected by a spiral fastening method.

Thereafter, the needle 11c is set on the skin of the human body or the animal by setting the amount of the injected drug, and then injected by the prescribed injecting agent.

After the injection is completed, when the used pen needle 11 is separated from the ampule cartridge 3, the needle-cap 13 is put on the used pen needle 11 again in reverse to the above-mentioned engagement, And inserted into a separate cover or a separate separating mechanism, and rotated counterclockwise or counterclockwise two to four times to separate them in a screw loosening manner.

However, in this conventional method of using the needle 11c, since the needle 11c is exposed to the outside until the pen needle 11 is once removed after the injection, the user or a third person 11c), there is a risk of injury or infection.

In order to solve such a problem, a plurality of patent documents including Patent Document 1 below disclose configurations for a disposable syringe or disposable syringe needle for preventing reuse.

First, in the "pre-filled safety device for a syringe and a scanning device (Korean Patent Laid-Open No. 10-2013-0041161)" of the following Patent Document 1, a pre-charged safety device for a syringe has a syringe pre- A hollow needle shield which is slidable relative to the support, and guide means for guiding movement of the needle shield relative to the support, the guide means comprising a deflectable flexible arm, a guide pin and a guide track, , The deflectable flexible arm extending essentially parallel to the central axis of the safety device, the guide pin extending radially from the flexible arm and the guide track being movable in the guide track as the needle shield slides relative to the support Thereby guiding the guide pin.

However, the conventional invention disclosed in the above-mentioned Patent Document 1 can only be used once, and there is a problem in that it can not be applied to a pen type syringe which can be used several times while the pen needle unit 10 is replaced.

On the other hand, a disposable syringe needle (Korean Patent Registration No. 10-1599265) equipped with a reuse prevention function of Patent Document 2, which is another conventional invention, is connected to the contents discharging portion of the syringe body, A lower housing having a plane portion formed in a plane at an inner center thereof, a lower housing having a needle support portion protruding from an upper center of the planar portion and having a needle portion connected to the needle support portion, A rotating body movably connected to the upper portion of the elastic member so that the needle supporting portion and the needle portion can be drawn in through the center so as to be able to be drawn in, an upper portion coupled to the upper portion of the lower housing, And an upper housing connected to the rotating body, wherein the rotating body (300) is not re-lowered after one lifting and lifting The configuration characterized in that the lock configurations are disclosed.

In the case of the above-described Patent Document 2, it is effective in preventing reuse of the syringe needle itself which is separated after one use, but for this purpose, only a specially designed syringe needle having a complicated structure should be used. 10), it is impossible to apply it. Particularly, in the case of using the ordinary pen needle unit 10, it is important that the needle 11c is not exposed after the scanning is completed, and when the pen needle 11 is replaced or removed, There is a problem in that it is impossible to satisfy all of the opposite requirements that the battery 11 must be exposed again.

1. Korean Patent Publication No. 10-2013-0041161 2. Korean Patent No. 10-1599265

Disclosure of Invention Technical Problem [8] The present invention has been made in view of the above problems, and it is an object of the present invention to provide a safety cover which can be easily mounted on a pen type syringe using a conventional pen needle unit, The safety cover can be fixed so that the needle is not exposed after the injection is completed, and it is also possible to return to the initial state according to the return operation of the user It is an object of the present invention to provide a safety cover for a pen-type syringe which is suitable for continuous use in repetitive scanning processes.

The safety cover of the pen type syringe of the present invention is installed in the syringe body 2 of the pen type syringe 1 so as to cover the ampule cartridge 3 and the pen needle unit 10 The present invention relates to a safety cover for a pen type syringe which comprises a housing 110 mounted on the syringe body 2 and having a space opened upwardly and downwardly therein, The housing 110 is installed inside the housing 110 so that the pen tip unit 10 is partially exposed at the upper side of the housing 110 and has a cylindrical shape with upper and lower sides opened. A safety cover 130 provided on the outer surface of the housing 110 and having one or more guide protrusions 131 formed thereon for being elastically supported by the elastic providing means 120, When the guide protrusions (131) And when the safety cover 130 is pushed downward by the attachment / detachment distance L1 from the initial position A, the safety cover 130 is again raised to the initial position A and returned, When the safety cover 130 is pushed downward by the injection distance L2 from the initial position A, the safety cover 130 is moved up and fixed to the fixed position B, A guide groove structure 150 for guiding the guide protrusion 131 to return to the initial position A; And a control unit.

The guide groove structure 150 includes an initial state groove 151 and a first induction ramp 152 sloped downward by the injection distance L2 from the initial state groove 151 in one direction, A second induction ramp 153 formed continuously from the end of the first induction ramp 152 and sloping downward from the initial position A by a mounting / dismounting distance L1 in the other direction; An initial position return induction path 154 formed upward from the end of the second guided inclined path 153 and forming a path returning to the initial position A; A fixed position guiding return path 155 formed continuously from the end of the fixed position B and upwardly inclined in the one direction and reaching a fixed position B of the same height as the initial position; (A) to the initial position An initial position recovery induction furnace 158 formed at a predetermined position; And further comprising:

The guide groove structure 150 includes a fixed position groove 156 formed upward from the fixed position B and a fixed position holding protrusion 156 protruding upward from the fixed position B 157); And further comprising:

The guide groove structure 150 may be formed in the fixing position groove 156 so that when the guide protrusion 131 is positioned in the fixed position groove 156, A use condition check hole 159 which can be visually confirmed from the outside of the housing 110; And further comprising:

An elastic providing means mounting step 111 formed inside the lower portion of the housing 110 for supporting a lower end of the elastic providing means 120; A lubrication member 140 installed between the lubrication member 140 and the valve body 140; And further comprising:

According to the present invention, as a safety cover which can be simply mounted on a pen type syringe using a conventional pen needle unit, when the pen is replaced or detached, the safety cover exposes the pen needle again The safety cover can be fixed so that the needle is not exposed after the scan is completed, and it is possible to return to the initial state according to the return operation of the user, There is an advantage that it is possible to provide a safety cover of a pen type syringe suitable for continuous use in the scanning process.

1 is a view showing a configuration of a pen needle unit mounted on a pen type syringe;
2 is an external perspective view showing a configuration of a safety cover of a pen-type syringe according to an embodiment of the present invention;
3 is a cross-sectional view showing a configuration of a safety cover of a pen-type syringe according to an embodiment of the present invention;
4 is an exploded perspective view showing the configuration of a safety cover of a pen-type syringe according to an embodiment of the present invention;
5 is a view showing a configuration of a guide groove structure of a safety cover of a pen-type syringe according to an embodiment of the present invention;
FIG. 6 is a view showing a process of attaching and detaching a safety cover of a pen-type syringe according to one embodiment of the present invention, and a degree of pressing in a scanning process.
7 is a view showing the positions of the guide groove structure and the guide protrusion in the initial state of the safety cover of the pen type syringe according to the embodiment of the present invention.
8 is a view showing the movement path of the guide protrusion in the guide groove structure in the process of attaching and detaching the safety cover of the pen type syringe according to the embodiment of the present invention.
9 is a view showing a movement path of the guide protrusion in the guide groove structure in the scanning process of the safety cover of the pen type syringe according to the embodiment of the present invention.
10 is a view showing the movement path of the guide protrusion in the guide groove structure in the process of reusing and restoring the safety cover of the pen type syringe according to the embodiment of the present invention.

Hereinafter, a safety cover of a pen-type syringe according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts are denoted by the same reference numerals whenever possible. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

3, the safety cover 100 of the pen type syringe according to the embodiment of the present invention is mounted on the syringe body 2 of the pen type syringe 1 which can be used repeatedly several times or more, 3 and the pen needle unit 10 and comprises a housing 110, a resilient providing means 120, a safety cover 130 and a guide groove structure 150, do.

It should be noted that in the present invention, 'upper side' and 'lower side' are defined and used in reference to FIG. 5 for convenience of description (accordingly, in FIGS. 3 and 4, And the left direction (the direction of the syringe body 2) is the "lower" direction defined previously). In the present invention, in describing the guide groove structure 150, for convenience, the right direction in FIG. 5 is defined as 'one side' and the left direction is defined as 'other side' Be careful.

6, the distance from the initial position A (the position of the safety cover 130 `` indicated by the dotted line in FIG. 6) (In the case of mounting or dismounting, the safety cover 130 is a needle-to-cap (not shown) 13) to a height at which the needle hub 11a is entirely exposed. 6, when the needle 11c is inserted into the human body during the scanning process, the injection distance L2 in the case where the safety cover 130 'is lowered by the double-dashed line in FIG. 6 indicates that the safety cover 130 ) From the initial position A to the position where the needle 11c is fully inserted. 6, the small-cap removal distance L3 in the case where the falling-down state of the safety cover 130 'is expressed by removing the needle small-cap 12 in the process of mounting the pen needle 11 It is a small distance with a distance that is assumed in consideration of the fact that the safety cover 130 may slightly protrude.

First, the housing 110 will be described.

As shown in FIG. 3, the housing 110 is configured to be installed in the syringe body 2, with a space opened upwardly and downwardly therein. 4, a guide groove structure 150 is formed on the inner surface of the housing 110. The guide protrusion 131 is formed on the inner surface of the safety cover 130, It is preferable to combine two identical components each formed with a single unit. 3 and 4, an elastic providing means mounting step 111 for supporting the lower end of the elastic providing means 120 is further formed in the lower side of the housing 110.

Next, the elasticity providing means 120 will be described. 3 and 4, the elastic providing means 120 is installed in the housing 110 to provide an elastic force to move the safety cover 130 upward.

3 and 4, a lubrication member 140 may be further installed between the elastic member 120 and the safety cover 130 to receive an elastic force by the elastic member 120. In this case, It is preferable that the safety cover 130 is smoothly rotated in the course of operation. The lubrication member 140 may be implemented in various embodiments, and in one embodiment, the lubrication member 140 may be implemented as a ring-shaped member coated with a Teflon material, or may be implemented as a ball bearing Do.

Next, the safety cover 130 will be described. As shown in FIGS. 3 and 4, the safety cover 130 has a cylindrical shape with its upper and lower sides opened. The safety cover 130 partially protrudes from the initial state A to the upper side of the housing 110, (10) is installed inside the housing (110) without being exposed to the outside. As shown in FIGS. 3 and 4, the safety cover 130 has one or more guide protrusions 131 formed on its outer surface. In this case, it is preferable that the pair of guide protrusions 131 are formed symmetrically with respect to the central axis of the cylinder of the safety cover 130 for smooth operation. 3 and 4, the safety cover 130 is installed to be movable by receiving the elastic force by the elastic providing means 120. As shown in FIG.

The upper side of the safety cover 130 is closed by the needle-to-cap 13 or the detaching means (not shown) in the process of attaching / detaching in the operation process, As each contact is pushed out.

On the other hand, on the upper outer surface of the safety cover 130, a rotation gripping groove 132 is preferably formed as shown in FIG. 4 for easy gripping in a returning step to be described later.

Next, the guide groove structure 150 will be described.

As shown in FIGS. 3 and 4, the guide groove structure 150 is formed to guide the guide protrusions 131 inserted into the inner surface of the housing 110, respectively.

When the safety cover 130 is pushed downward by the attachment / detachment distance L1 from the initial position A, the guide groove structure 150 returns to the initial position A and returns to the initial position A. Then, When the safety cover 130 is pushed downward by the injection distance L2 from the initial position A, the safety cover 130 is moved up and fixed to the fixing position B, And guide the guide protrusion 131 so as to return to the initial position A when rotated.

5 and 7, the guide groove structure 150 may include an initial state groove 151 in which the guide protrusion 131 is inserted in the initial state A, It is basically equipped.

5 and 8, when the safety cover 130 is pushed downward by an attach / detach distance L1 from an initial position A in the process of attaching / detaching the guide groove structure 150, A first induction ramp 152 sloped downward by the injection distance L2 in the initial state groove 151 so as to rise and return to the initial position A, A second induction ramp 153 formed continuously from the end of the induction ramp 152 and sloping downward from the initial position A by a mounting / dismounting distance L1 in the other direction; And an initial position return induction furnace 154 formed upwardly from the end of the initial position A to form a path returning to the initial position A. [ 8, the guide protrusion 131 moves along the movement path indicated by the dotted arrow in the guide groove structure 150 on the left side in FIG. 8, The cover 130 is pushed downward by the attachment / detachment distance L1 and then returns to the original initial position A and returns to the initial state.

9, the safety cover 130 is pushed downward by only the injection distance L2 from the initial position A, and after the injection process is completed, The cover 130 is moved upward to the fixing position B and is fixed and then fixed so that the state in which the needle 11c can be prevented from being exposed to the outside is maintained. 5 and 9, the guide groove structure 150 is formed continuously from the end of the first guided slant road 152 and is inclined upward in the one direction so as to have the same height as the initial position And a fixed position guiding return path 155 reaching the fixed position B of the fixed position B of the fixed position B. That is, when the safety cover 130 is pressed only by the injection distance L2 at the initial position A and then raised again, the guide protrusion 131 is returned to the second guided ramp 153 and the initial position return Moves along the guide path 154 to move to the fixed position B while ascending along the fixed position guided return path 155 instead of returning to the initial position A. [ Therefore, even if the safety cover 130 is pressed from the outside, the safety cover 130 does not descend but stays in the fixed position, thereby preventing the needle 11c from being exposed to the outside. 4 and 5, the guide groove structure 150 is formed in the fixing position groove 156 as a through hole so that the user can visually confirm such a fixed state, It is preferable to further include a use condition check hole 159 for allowing the guide protrusion 131 to be visually confirmed from the outside of the housing 110 when the guide protrusion 131 is located in the fixed position groove 156 Do. In this case, it is preferable that the guide protrusion 131 is implemented in a color different from that of the housing 110 for easy visual confirmation.

5 and 9, the guide groove structure 150 is disposed at the upper side in the fixed position B so that the guide protrusion 131 can be more stably positioned at the fixing position B. In addition, And a fixing position retention protrusion 157 protruding upward from the fixing position B, as shown in FIG.

Next, in order to remove the pen needle 11 already used, the guide protrusion 131 is moved from the fixing position B to the initial position A again, and the safety cover 130) can be lowered by the attaching / detaching distance (L1). 5 and 10, the guide groove structure 150 includes an initial position recovery guide path 158 formed in the other direction from the fixed position B to the initial position A It is preferable to further comprise. 10, the guide protrusion 131 moves along the initial position recovery guide path 158 to move the safety cover 130 to the fixing position B, To the initial position (A). Therefore, the mounting / removing process is performed again, and reuse becomes possible.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

L1: Mounting / removing distance
L2: injection distance
L3: Cow-capping distance
1: Pen type syringe
2:
3: ampule cartridge 3a: needle fastening part
4: Capacity adjustment knob
5: Scanning button
10: Pen Needle Unit
11: Pen Needle
11a: Needle hub 11b:
11c: Needle 11d: Needle mounting part
11e: grip groove
12: Needle cap
13: Needle Cap
15: Sterilization finish stick
100: Safety cover of pen type syringe
110: Housing
111: Elastic providing means mounting step
120: elasticity providing means
130: Safety cover
131: guide projection 132: rotation grip groove
140: Lubricating member
150: guide groove structure
151: initial state groove 152: first induction ramp
153: second induction ramp 154: initial position return induction furnace
155: Fixed position guided return path 156: Fixed position groove
157: fixed position maintaining projection 158: initial position recovery induction furnace
159: Checking the status of use

Claims (5)

1. A safety cover for a pen-type syringe which is mounted on a syringe body (2) of a pen-type syringe (1) so as to cover the ampule cartridge (3) and a pen needle unit (10)
A housing 110 mounted on the syringe body 2 and having a space opened upward and downward therein;
An elastic providing means 120 installed in the housing 110;
The housing 110 has a cylindrical shape with its upper and lower sides opened, and is installed inside the housing 110 so as to partially protrude above the housing 110 to prevent the pen needle unit 10 from being exposed to the outside. A safety cover 130 having the guide protrusions 131 formed thereon and movable in response to elasticity provided by the elastic providing means 120;
When the safety cover 130 is pushed downward by the mounting / detaching distance L1 from the initial position A, the guide protrusion 131 is inserted into the housing 110, When the safety cover 130 is pushed downward by the injection distance L2 from the initial position A, the safety cover 130 moves up to the fixed position B and moves and is fixed A guide groove structure 150 for guiding the guide protrusion 131 to return to the initial position A by rotating the safety cover 130 at the fixing position B; The safety cover (100) of the pen-type syringe according to any one of claims 1 to 3,
The method according to claim 1,
The guide groove structure (150)
An initial state groove 151;
A first induction ramp 152 inclined downward by the injection distance L2 in the initial state groove 151 in one direction;
A second induction ramp 153 formed continuously from an end of the first induction ramp 152 and inclined downward by a mounting / dismounting distance L1 from the initial position A;
An initial position return induction path 154 formed upwardly from the end of the second guided inclined path 153 and forming a path returning to the initial position A;
A fixed position guiding return path 155 continuously formed at an end of the first guided inclined path 152 and inclined upward in one direction to reach a fixed position B of the same height as the initial position;
An initial position recovery induction path 158 formed in the other direction from the fixed position B to the initial position A; The safety cover (100) of the pen type injector according to claim 1, further comprising:
The method according to claim 2,
The guide groove structure (150)
A fixed position groove 156 formed upward from the fixed position B;
A fixed position holding protrusion 157 protruding upward partially from the fixed position B; The safety cover (100) of the pen-type syringe according to claim 1, further comprising: The method of claim 3,
The guide groove structure (150)
When the guide protrusion 131 is located in the fixed position groove 156, the guide protrusion 131 can be visually checked from the outside of the housing 110 A use state confirmation aperture 159 for allowing the user to confirm the state of use; The safety cover (100) of the pen type injector according to claim 1, further comprising: The method according to claim 4,
An elastic providing means mounting step 111 formed inside the lower side of the housing 110 for supporting a lower end of the elastic providing means 120;
A lubricating member 140 installed between the elastic providing means 120 and the safety cover 130; The safety cover (100) of the pen-type syringe according to claim 1, further comprising:

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