WO2018147563A1 - Safety cover structure for pen-type syringe - Google Patents

Abstract

The present invention relates to a safety cover for a pen-type syringe and to a safety cover for a pen-type syringe, characterized by comprising: a housing which has a vertically open space therein and is mounted on the main body of a syringe; an elasticity provision means installed inside the housing; a safety cover which has a cylindrical shape with an open top and bottom, has a part thereof protruding from the upside of the housing, is installed inside the housing so as for a pen needle unit not to be exposed to the outside, has one or more guide protrusions formed on the outer surface thereof, and is installed so as to be movable by receiving elasticity via the elasticity provision means; and guide groove structures which are formed on the inner surface of the housing so as for the respective guide protrusions to be inserted in and guided by same and which guide the guide protrusions.

Description

Safety cover structure of pen type syringe

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety cover of a pen type syringe, wherein the pen type syringe is mounted to the syringe body 2 of the pen type syringe 1 so as to cover the ampoule cartridge 3 and the pen needle unit 10. In the safety cover, a space is formed in the upper and lower openings, the housing 110 is mounted to the syringe body (2); and the elastic providing means (120) installed in the housing (110); It is installed inside the housing 110 so that the pen needle unit 10 is not exposed to the outside by protruding a portion toward the upper side of the housing 110 while the upper and lower sides have an open cylindrical shape. The above guide protrusion 131 is formed, the safety cover 130 is provided to be movable by receiving the elasticity by the elasticity providing means 120; And, the guide protrusion 131 on the inner surface of the housing 110 ) Are each inserted and derived When the safety cover 130 is pushed downward by the mounting / removing distance L1 from the initial position A, the safety cover 130 rises to the initial position A again and returns, and the safety cover 130 is When pushed downward by the injection distance (L2) from the initial position (A) is raised and moved to a fixed position (B) is fixed by moving, the rotation of the safety cover 130 in the fixed position (B) again A guide groove structure 150 for guiding the guide protrusion 131 to return to the initial position A; It relates to a safety cover 100 of a pen type syringe, characterized in that comprising a.

Pen-type syringe is a regular injection for injection of injection drugs such as insulin injection of diabetic, injection of growth hormone of adolescents, asthma, arthritis, allergy, atopic patients, treatment of infertile women and other animals. It is conveniently carried and used for the case where administration is required. Such a pen-type syringe is made for the convenience of a user who frequently requires self-injection as described above.

Insulin is essential and must be administered to diabetic patients, especially type 1 diabetic patients. Inhalation, patch, oral, and other methods have been developed and studied. The self-injecting and self-injecting daily by the patient using the needle and the needle, the pen-type syringe generally contains an injection medicine that can be injected several times or tens of times and is configured so that a certain amount of injection medicine can be injected into the human body by a push button. .

In addition, the pen needle used in combination with the pen type syringe is a one-time product used by replacing the needle every time due to the risk of infection, etc. The pen needle is shown in FIG. 1 according to ISO 11608-2. Pen needle 11 including needle hub 11a and needle tube 11c, needle container 13, needle shield 12, sterilization Consists of a pen needle unit 10 with a set of sealing seals 15 as a set, all of which are disposable consumables, in particular injected into a cylindrical rod which is perforated in the hub center of the components. A needle hub in which a needle penetrates is called a pen needle 11.

In detail, the needle 11c fixedly mounted at the center of the pen needle 11 is significantly thinner and sharper than the needle mounted on a general medical syringe, and the needle in consideration of the user's skin thickness and subcutaneous fat thickness is considered. The length of is also very short, usually within 12mm is produced, produced and used has the characteristics.

On the other hand, in order for the user to self-administer the injection drug, first, the sterile finishing seal (Seal) 15 is removed from the needle fastening portion 3a provided at the top of the ampoule cartridge 3 of the pen type syringe, and then the needle cap (13) to be coupled by rotating the fastening portion (11b) of the pen needle (11) accommodated in the spiral fastening method.

Thereafter, the injection drug amount is set, and the needle 11c is inserted into the epidermis of the human body or animal, and then injected by the prescribed injection medicine.

After the injection is completed, when the used pen needle 11 is removed from the ampoule cartridge 3, the needle cap 11 is put on the used pen needle 11 again as opposed to the above coupling or a separate discharge function is provided. Inserted into a separate cover or a separate separation mechanism was rotated 2 to 4 times in the left turn or right turn direction was separated by screw loosening method.

However, in the conventional use method, since the needle 11c is exposed to the outside as it is until the pen needle 11 is removed after the injection is completed, the user or a third party may inadvertently use the needle ( There is a problem that there is a risk of being stabbed in 11c) and there is a risk of injury or infection.

In order to solve this problem, many patent documents, including Patent Document 1, discloses a configuration for a disposable syringe or a disposable syringe needle for preventing reuse.

First, "Safety device and injection device for pre-filled syringes" (Korean Patent Publication No. 10-2013-0041161), a safety device for a pre-filled syringe is a hollow support for holding a syringe pre-filled therein, A hollow needle shield 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 arm extends essentially parallel to the central axis of the safety device, the guide pin extends radially from the flexible arm and the guide track guides the guide pin along it in the guide track as the needle shield slides against the support. The structure to make is disclosed.

However, the existing invention of Patent Document 1 described above can be used only once, and there is a problem that it is impossible to apply the pen type syringe which can be used several times while replacing the pen needle unit 10.

On the other hand, another existing invention "disposable syringe needle with a reuse prevention function (Korea Patent No. 10-1599265) is connected to the contents discharge portion of the syringe body, the upper and lower portions are formed by opening, the inner center A lower housing having a flat portion formed in a flat surface, having a needle support portion protruding from the upper end of the flat portion, and having a needle portion connected to the needle support portion, an elastic member installed at an outer edge of the needle support portion; A rotatable body movably connected to an upper portion of the elastic member and having a central hole formed therein, the rotatable body being formed to be retractable, the upper housing being coupled to surround the outer side of the rotatable body and connected to an upper portion of the lower housing; It is formed, including, the rotating body 300 is configured so as not to be lowered after the once falling and rising A configuration characterized by this is disclosed.

In the case of Patent Document 2 described above, it is effective in preventing reuse of the syringe needle itself, which is separated after one use, but for this purpose, only a syringe needle having a complicated structure specially manufactured should be used. In the case of using 10) there was a problem that it is not applicable. In particular, in the case of using the conventional pen needle unit 10, it is important not to expose the needle 11c after the injection is completed, and at the same time, when replacing or mounting or removing the pen needle 11, the pen needle There was a problem that (11) could not meet all the opposite requirements that it should be able to be exposed again.

The present invention solves the problems of the existing inventions described above, and is a safety cover that can be easily mounted and used in a pen-type syringe using a conventional pen needle unit. It is possible not only to allow the pen needle to be exposed again and to return to the initial state, but also to secure the cover so that the needle is not exposed after the injection is completed, and returning to the initial state again according to the user's return operation. It is possible, therefore, to provide a safety cover of a pen type syringe suitable for continued use in a repetitive injection process.

In order to achieve the above object, the safety cover of the pen type syringe of the present invention is mounted on the syringe body 2 of the pen type syringe 1 so as to cover the ampoule cartridge 3 and the pen needle unit 10. In the safety cover of a pen-type syringe, a space that is open up and down is formed therein, the housing 110 is mounted to the syringe body 2; and the elastic providing means installed in the housing 110 ( 120, and is installed inside the housing 110 such that the pen needle unit 10 is not exposed to the outside by protruding a portion of the housing 110 while the upper and lower sides have an open cylindrical shape. At least one guide protrusion 131 is formed on the outer surface, the safety cover 130 is elastically installed by the elastic providing means 120 and is installed to be movable; and on the inner surface of the housing 110. The guide protrusion 131 is each Is inserted and guided, and when the safety cover 130 is pushed downward by the mounting / removal distance (L1) from the initial position (A) to rise again to the initial position (A), the safety cover ( When 130 is pushed downward by the injection distance L2 from the initial position (A), it is moved to a fixed position (B) and moved to be fixed, and rotates the safety cover 130 in the fixed position (B) A guide groove structure 150 for guiding the guide protrusion 131 to return to the initial position A again; Characterized in that comprises a.

The guide groove structure 150 may include an initial state groove 151 and a first guide ramp 152 formed to be inclined in one direction downward by the injection distance L2 from the initial state groove 151. And a second guide ramp 153 formed successively at the end of the first guide ramp 152 and formed to be inclined in the other direction downward by the mounting / removing distance L1 from the initial position A; An initial position return guideway 154 formed upwardly at an end of the second guideway 153 and forming a path to return to the initial position A; and the first guideway 152. It is formed in succession at the end of, and formed inclined upward in the one direction to reach a fixed position (B) of the same height as the initial position; a fixed position guided return path (155); and from the fixed position (B) In the other direction until the initial position (A) An initial position recovery induction furnace 158 formed of; Characterized in that further comprises.

In addition, the guide groove structure 150, the fixed position groove 156 is formed in the upper side from the fixed position (B); and the fixed position holding projections formed to protrude upwardly from the fixed position (B) ( 157); Characterized in that further comprises.

In addition, the guide groove structure 150 is formed through the hole in the fixed position groove 156, when the guide protrusion 131 is located in the fixed position groove 156 to the guide protrusion 131 Use state confirmation through-hole 159 to be visible to the outside of the housing 110; Characterized in that further comprises.

In addition, the lower end of the housing 110, the elastic providing means mounting step 111 for supporting the lower end of the elastic providing means 120; and the elastic member 120 and the safety cover 130 Lubrication member 140 is installed between the; Characterized in that further comprises.

According to the present invention, as a safety cover that can be easily mounted and used in a pen-type syringe using a conventional pen needle unit, the safety cover is exposed again when the pen needle is replaced or removed. Not only can it be possible to return to the initial state, it is also possible that the safety cover is fixed so that the needle is not exposed after the injection is completed, and it is possible to return to the initial state again according to the user's return operation. It is an advantage that it is possible to provide a safety cover of a pen type syringe suitable for continued use in the injection process.

1 is a view showing a configuration of a pen needle unit mounted to a pen type syringe.

Figure 2 is an external perspective view showing the 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 the 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.

6 is a view showing the demounting process of the safety cover of the pen-type syringe according to an embodiment of the present invention, the degree of pressing in the injection process.

7: A view showing the position of the guide groove structure and the guide protrusion in the initial state of the safety cover of the pen type syringe according to an embodiment of the present invention.

8 is a view showing a movement path of the guide protrusion in the guide groove structure in the process of dismounting the safety cover of the pen-type syringe according to an embodiment of the present invention.

9 is a view showing the movement path of the guide protrusion in the guide groove structure during the injection process of the safety cover of the pen type syringe according to an embodiment of the present invention.

10 is a view showing a movement path of the guide protrusion in the guide groove structure in the process of re-use restoration of the safety cover of the pen-type syringe according to an embodiment of the present invention.

Explanation of symbols used in the invention

L1: Mounting / Removing Distance

L2: injection distance

L3: Small cap removal distance

1: pen type syringe

2: syringe body

3: ampoule cartridge 3a: needle fastener

4: capacity adjustment knob

5: injection button

10: pen needle unit

11: pen needle

11a: needle hub 11b: fastener

11c: Needle 11d: Needle Mount

11e: grip groove

12: needle socap

13: needle cap

15: Sterile finish seal

100: safety cover of the pen-type syringe

110: housing

111: elastic provision means installation step

120: elastic provision means

130: safety cover

131: guide protrusion 132: rotary gripping groove

140: lubrication member

150: guide groove structure

151: initial state groove 152: first induction ramp

153: second induction ramp 154: initial position return ramp

155: fixed position guided return path 156: fixed position groove

157: fixed position holding projection 158: initial position recovery induction furnace

159: use state check

Hereinafter, with reference to the accompanying drawings, a safety cover of a pen type syringe according to an embodiment of the present invention will be described in detail. First, in the drawings, the same components or parts are to be noted that as indicated by the same reference numerals as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

Safety cover 100 of the pen-type syringe according to an embodiment of the present invention is mounted on the syringe body 2 of the pen-type syringe 1 that can be used repeatedly several times, as shown in Figure 3 ampule cartridge ( 3) and the basic feature is installed to cover the pen needle unit 10, and comprises a housing 110, elastic providing means 120, safety cover 130 and the guide groove structure 150 do.

Meanwhile, in the present invention, for convenience of description, it should be noted that 'top' and 'bottom' are defined and used based on FIG. 5 (hence, in FIG. 3 and FIG. 4, the right direction is defined above in the 'up' direction). The left direction (injector main body 2 direction) becomes the 'lower' direction defined above.). In addition, 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'. Care must be taken.

In addition, with respect to the distance that the safety cover 130 descends from the initial position (A) (the position of the safety cover 130 `` '' indicated by the dotted line in Figure 6), the safety cover 130 in a solid line in FIG. The mounting / removing distance L1 in the case of expressing the lowered state of) refers to the distance that the needle hub 11a is lowered until all of the needle hubs 11a are exposed. (In the mounting or detachment process, the safety cover 130 is a needle large cap ( 13) is pushed down to a height where all the needle hub (11a) is exposed.). Meanwhile, in FIG. 6, the injection distance L2 in the case where the descending state of the safety cover 130 ′ is represented by the dashed-dotted line in FIG. 6 is the safety cover 130 by the skin when the needle 11c is inserted into the human body during the injection process. ) Means the distance from the initial position (A) to the position where the needle (11c) is fully inserted. In addition, the small cap detachment distance L3 in the case of expressing the falling state of the safety cover 130 ″ by the dashed-dotted line in FIG. 6 is to remove and remove the needle small cap 12 during the pen needle 11 mounting process. Assuming that the safety cover 130 can be slightly pushed out, the distance is a small small distance.

First, the housing 110 will be described.

As shown in FIG. 3, the housing 110 has a space that is vertically opened therein and is configured to be mounted to the syringe body 2. On the other hand, when the guide protrusion 131 to be described later formed in the safety cover 130 is formed in a pair, the housing 110 is corresponding to the guide groove structure 150 on the inner side as shown in FIG. It is preferable to combine two identical parts each formed in one. Meanwhile, as shown in FIGS. 3 and 4, an elastic provision means mounting step 111 supporting the lower end of the elastic provision means 120 may be further formed inside the housing 110.

Next, the elasticity providing means 120 will be described. The elastic providing means 120 is installed in the housing 110, as shown in Figure 3 and 4 has a function to provide an elastic force for the safety cover 130 to operate upward.

In this case, as shown in FIGS. 3 and 4, the lubrication member 140 is further installed between the elastic member 120 and the safety cover 130 to receive the elastic force by the elastic member 120. Nevertheless, it is preferable to allow the safety cover 130 to rotate smoothly in the course of operation. The lubrication member 140 may be implemented through various embodiments, and in one embodiment, the lubrication member 140 may be implemented as a ring-shaped member coated with 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 in which the upper and lower sides are opened, and a part of the safety cover 130 protrudes from the initial state A to the upper side of the housing 110 so that the pen needle unit 10 is installed inside the housing 110 while not being exposed to the outside. 3 and 4, the safety cover 130 has one or more guide protrusions 131 formed on an outer surface thereof. In this case, the guide protrusion 131 is preferably formed in a pair symmetrical position with respect to the central axis of the cylinder of the safety cover 130 for smooth operation. On the other hand, the safety cover 130, as shown in Figure 3 and 4, is provided to be elastically provided by the elasticity providing means 120 is installed to be movable.

The upper side of the safety cover 130 by the needle cap (13) or removal means (not shown) in the mounting / removal process in the operation process, by the user's skin in the injection process, and when shown in Figure 6 when removing the small cap They are pushed out of contact with each other.

On the other hand, the upper outer surface of the safety cover 130, it is preferable that the rotary gripping groove 132 is further formed as shown in Figure 4 for easy gripping in the return 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 such that the guide protrusions 131 are inserted into the inner surface of the housing 110 and guided, respectively.

When the safety cover 130 is pushed downward by the mounting / removing distance L1 from the initial position A, the guide groove structure 150 returns to the initial position A again and returns to the safety cover. When 130 is pushed downward by the injection distance L2 from the initial position (A), it is moved to a fixed position (B) and moved and fixed, and the safety cover (130) at the fixed position (B) Rotating guides the guide protrusion 131 to return to the initial position A again.

In order to enable such an operation, the guide groove structure 150 has an initial state groove 151 in which the guide protrusion 131 is inserted and positioned in the initial state A, as shown in FIGS. 5 and 7. Basically provided.

5 and 8, the safety cover 130 is pushed downward by the mounting / removing distance L1 at the initial position A in the mounting / removing process. A first guide ramp 152 which is formed to be inclined in one direction downward by the injection distance L2 from the initial state groove 151 so as to return to the initial position A and return to the initial position A, and the first A second guide ramp 153 which is successively formed at the end of the guide ramp 152 and is formed to be inclined in the other direction downward by the mounting / removal distance L1 from the initial position A, and the second guide ramp ( It is formed successively at the end of the 153, and comprises an initial position return induction path 154 to form a path to return to the initial position (A). That is, in the mounting / removing process, the guide protrusion 131 moves in the guide groove structure 150 on the left side in FIG. 8 along the movement path represented by the dotted arrow, and as shown by the arrow on the right side in FIG. 8. The cover 130 is pressed down by the mounting / removing distance L1 and then returns to the original initial position A to return to the initial state.

On the other hand, in the injection process, as shown in the right side in Figure 9, the safety cover 130 is pushed downward by pressing the skin as much as the injection distance (L2) in the initial position (A), and after the injection process is finished the safety The cover 130 is lifted up and moved to the fixed position B, and then fixed, so that the state of preventing the needle 11c from being exposed to the outside should be maintained. To this end, as shown in FIGS. 5 and 9, the guide groove structure 150 is continuously formed at the end of the first induction ramp 152, and is formed to be inclined in the one direction upward to the same height as the initial position. It is preferably configured to include a fixed position induction return path 155 reaching up to the fixed position (B) of. That is, when the safety cover 130 is pressed only by the injection distance L2 at the initial position A and then rises again, the guide protrusion 131 returns to the second guide ramp 153 and the initial position. Instead of moving along the induction path 154 to return to the initial position A, the motor moves to the fixed position B while rising along the fixed position induction return path 155. Therefore, even when the safety cover 130 is pressed from the outside, the safety cover 130 does not lower and stays in a fixed position, thereby preventing the needle 11c from being exposed to the outside. On the other hand, so that the user can easily check the fixing state with the naked eye, the guide groove structure 150 is formed as a through-hole in the fixed position groove 156, as shown in Figure 4 and 5, the guide protrusion ( When the 131 is located in the fixed position groove 156, the guide protrusion 131 may be configured to further include a use state checking through hole 159 that can be visually identified from the outside of the housing 110. Do. In this case, the guide protrusion 131 is preferably implemented in a different color from the housing 110 for easy visual confirmation.

On the other hand, so that the guide protrusion 131 can be more stably positioned in the fixed position (B), the guide groove structure 150 is upper side in the fixed position (B), as shown in Figs. The fixed position groove 156 and the fixed position holding projections 157 formed to protrude upward from the fixed position (B) is preferably further configured to include.

Next, in order to remove the pen needle 11 already used, the guide protrusion 131 is moved from the fixed position B to the initial position A again, so that the safety cover ( 130 must be allowed to descend by the mounting / dismounting distance (L1). To this end, the guide groove structure 150, as shown in Figures 5 and 10, the initial position recovery induction path 158 formed in the other direction from the fixed position (B) to the initial position (A) It is preferable to comprise more. In this case, when the user rotates the safety cover 130 with a force as shown in FIG. 10, the guide protrusion 131 moves along the initial position recovery induction path 158 to fix the fixed position B. FIG. Is moved back to the initial position (A). Thus, by performing the mounting / removal process again, it becomes possible to reuse.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention 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 understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (5)

1. In the safety cover of a pen type syringe mounted on the syringe body 2 of the pen type syringe 1 and installed to cover the ampoule cartridge 3 and the pen needle unit 10,

   A space (110) formed inside and vertically open and mounted to the syringe body (2);

   Elastic means (120) installed in the housing (110);

   It is installed inside the housing 110 so that the pen needle unit 10 is not exposed to the outside by protruding a portion toward the upper side of the housing 110 while the upper and lower sides have an open cylindrical shape. The guide protrusion 131 is formed, the safety cover 130 is provided to be movable by receiving the elasticity by the elastic providing means 120;

   The guide protrusions 131 are respectively inserted into the inner surface of the housing 110 to be guided. When the safety cover 130 is pushed downward by the mounting / removing distance L1 from the initial position A, the guide protrusion 131 is inserted again. If the safety cover 130 is pushed downward by the injection distance (L2) from the initial position (A) to the initial position (A) to return to the initial position (A) is moved to a fixed position (B) and fixed A guide groove structure (150) for guiding the guide protrusion (131) to return to the initial position (A) when the safety cover (130) is rotated in the fixed position (B); Safety cover 100 of the pen-type syringe, characterized in that comprising a.
2. The method according to claim 1,

   The guide groove structure 150,

   Initial state groove 151;

   A first induction ramp 152 formed to be inclined in one direction downward from the initial state groove 151 by the injection distance L2;

   A second guide ramp 153 which is successively formed at the end of the first guide ramp 152 and is formed to be inclined in the other direction downward by the mounting / removing distance L1 from the initial position A;

   An initial position return induction path 154 formed upwardly successively at the end of the second induction ramp 153 and forming a path to return to the initial position A;

   A fixed position induction return path 155 which is successively formed at the end of the first induction ramp 152 and is inclined upward in the one direction to reach a fixed position B having 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; Safety cover 100 of the pen-type syringe, characterized in that it further comprises.
3. The method according to claim 2,

   The guide groove structure 150,

   A fixed position groove 156 formed upwardly from the fixed position B;

   A fixing position holding protrusion 157 which is formed to partially protrude upward from the fixing position B; Safety cover 100 of the pen-type syringe, characterized in that it further comprises.
4. The method of claim 3, wherein

   The guide groove structure 150,

   Is formed through the hole in the fixed position groove 156, when the guide protrusion 131 is located in the fixed position groove 156, the guide protrusion 131 can be visually confirmed from the outside of the housing 110 To check the use state to be through 159; Safety cover 100 of the pen-type syringe, characterized in that it further comprises.
5. The method according to claim 4,

   It is formed inside the lower side of the housing 110, the elastic providing means mounting stepped 111 to support the lower end of the elastic providing means 120;

   A lubrication member 140 installed between the elastic member 120 and the safety cover 130; Safety cover 100 of the pen-type syringe, characterized in that it further comprises.

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