KR100344029B1 - Insulin pump with internal sealing packing - Google Patents

Abstract

The present invention is an automatic syringe having a power supply means housing for receiving the power supply means in the lower portion of the housing having a syringe holder,

A guide ring plate protruding integrally from the power supply housing so that the locking rotor having the power transmitted from the power providing unit is integrally formed, and the rotating shaft coupling unit forming the output of the locking rotary unit is adhered to the inner surface and the upper end of the rotating shaft coupling unit is exposed. And a ring-shaped friction sealing packing having a lower portion open to be bonded between the inner surface of the guide ring plate and the outer circumferential surface of the locking rotary hole to form an elastic ring hole.

Therefore, even if the insulin injection liquid leaks in the housing, it is blocked by the friction sealing packing so that it does not move to the power supply means housing, thereby protecting wear and damage of the power supply means and a separate control board, thereby improving durability. Improve the reliability of the product.

Description

Insulin pump with internal sealing packing}

The present invention relates to an automatic syringe having a power supply means housing for receiving the power supply means in the lower portion of the housing having a syringe holder,

A guide ring plate protruding integrally from the power supply housing so that the locking rotor having the power transmitted from the power providing unit is integrally formed, and the rotating shaft coupling unit forming the output of the locking rotary unit is adhered to the inner surface and the upper end of the rotating shaft coupling unit is exposed. And an inner sealable auto-injector configured to include a ring-shaped friction sealing packing having a lower portion open to be bonded between the inner surface of the guide ring plate and the outer circumferential surface of the locking rotary hole to form an elastic ring hole.

In general, the automatic syringe for a long time injection has a structure in which a push means for pushing the syringe piston to the housing for receiving the injection syringe is coupled. This can exemplify JP-A-52-3292 and US Pat. No. 4,417,889. Since the Japanese Laid-Open Fire No. 52-3293 has a structure in which a syringe injector is installed outside the basic case, it requires a double case, which is inconvenient to carry. In this regard, a syringe having a dual case type was developed. The output of the oscillator A1 is provided to the timer A2, and the timer A2 output and the switch A4 output are the digital comparators, as shown in FIG. Is applied to (A3). The output of the digital comparator A3 is connected to the counter A6 and the flip-flop A9. The output of the other oscillator A5 is provided to the counter A6, the AND gate A10 (A11) and the counter A13. The digital comparator A7 output resets flip-flop A9, and the digital comparator A14 output resets flip-flop A16. The control unit A17 is connected to operate the counter A13 by the operation of a manual infusion switch A12. The output of the control unit A17 is provided to the counters A13, A16 and A21. The digital comparator A22 output is connected to the step motor driver A19 to stop the step motor A20. The output of the flip-flop A16 is connected to one input terminal of the OR gate A18 and the other input terminal of the AND gate A11 to which the output is connected. The step motor driver A19 is used to drive the step motor A20. Each fixed number of switches A4, A8, A15 and A25 have five protruding insert bars and provide reference values for the corresponding respective digital comparators A3, A7, A14 and A22. It performs the function. The light source A24 and the photo sensor A23 are configured to provide the sensing result to the counter A21, which is provided with the light source A24 and the photo sensor A23. In Fig. 3, several holes A26 are formed at regular intervals in the gear plate. The gear shaft A27 is fitted and fixed to the gear plate. The piston plate A28 is screwed with the gear shaft A27 so as to be movable. The light source A24 and the photo sensor A23 are installed on separate fixing plates at intervals from the gear plate at upper and lower vertical portions of the hole A26. An example of the structure including all of these configurations can be shown as shown in FIG. On the horizontal line between the gear mechanism (G) is installed, the gear mechanism (G) is driven by the motor (M). The driving of the motor M is controlled by the driving of the counter A21, the digital comparator A22, the switch A25 and the motor driver A19. The piston shaft A27 of the gear mechanism G is screwed to the piston plate A28 in the form of a nut, and the injection liquid (insulin) of the syringe I is moved to the needle N by the action of the piston plate A28. It is made to be injected. However, such a structure is easily infiltrated with water or moisture because the syringe is in conduction with the outside air. Accordingly, in order to take a shower during injection, it is inconvenient to take a shower after storing the housing in a separate sealing case.

For this purpose a sealable syringe has been proposed by the applicant, Figure 4 is a front view of the autoinjector illustrating this example, the top of the housing 20 with the lid 10, the bottom is sealed with the bottom cover 40 The coupling 10 is screwed to the cover 10, the connector (2) integral with the conduit (1). The connector 2 engages with the syringe syringe 21, which is coupled to the piston 22 inside the housing 20 to receive the injection liquid. On the bottom surface of the housing 20, a power supply means 30 is accommodated, and a disk-shaped push means 50 that rotates and drives the piston 22 upwardly by rotating on the rotation shaft 31 of the power supply means 30 is screwed. To be combined.

FIG. 5 is a plan view of FIG. 4, in which a cover 10 is installed on the left side of the surface of the housing 20, and a battery cover 24 is installed on the right side. The cover 10 is connected to a connector 2 connected to the conduit 1.

6 is a cross-sectional exploded view taken along line AA of FIG. 5, in the center of the cover 10, a connector 2 and a screw groove 11 for screwing are connected, and a bolt screw part for sealing and coupling the syringe holder 23 to the outer circumference thereof. 12) and packing (13) are installed. A push means guide protrusion 51 of the push means 50 is fitted below the syringe holder 23 to form a push means guide groove 25 for guiding the rising and falling of the push means 50, and FIG. 4. A piston guide groove 27 for guiding the rise of the piston 22 shown in the drawing is formed.

FIG. 7 shows the power supply means 30 fitted in the syringe holder 23 shown in FIG. 6 and the push means 50 on a disc screwed to the rotary shaft 31 thereof. Push means 50 is fitted to the push means guide groove 25 shown in Figure 6 on the outer periphery, the lower disk 54 with the push means guide protrusion 51 to move vertically, and the piston 22 There is a concave-convex means 52 which supports and rests the piston 22 and consists of an upper disc 55 which is integral with the lower disc 54. The power supply means 30 includes a deceleration mechanism 33 that decelerates the rotational force of the motor and provides it to the rotation shaft 31. A jig fitting groove (not shown) is formed in the upper disk 55 or the lower disk 54, and the push means guide protrusion 51 enters the center when the jig is fitted in the jig fitting groove.

When using this, in the state of FIG. 7 (assuming that the housing 20 is omitted), the piston 22 is inserted into the syringe 21 shown in FIG. 8, and a separate disposable needle (shown in the syringe 21) is shown. Insert a syringe (eg, insulin) in the vial and pull the piston 22 to store the syringe 21 in the syringe 21.

In this state, the piston 22 is placed in the push means 50 (of course, into the syringe holder 23 of FIGS. 6 and 4, and the piston guide groove 27 shown in FIG. 6 guides the piston shown in FIG. 8). The protrusions 26 are coupled to guide, and the push means guide protrusions 51 shown in FIG. 8 are coupled to guide along the push means guide grooves 25), and the lid 10 with the upper end of the syringe holder 23. Screw in. In this state, when the connector 2 is screwed with the cover, the connector 2 is naturally engaged with the syringe tip 21-1. Thus, the contents of the syringe 21 in the sealed state are automatically scanned in accordance with the operation of the push means 50. At this time, the push means 50 is pushed by the guide protrusion 51 is coupled to the push means guide groove 25 of the syringe holder 23 so that it can be raised to the right position, the piston guide protrusion 26 shown in FIG. Along the piston guide groove 27 shown in Figure 6 allows the piston 22 to rise to the right position.

On the other hand, an example of a portable automatic needle unit for long-term injection is, as shown in Fig. 9, a horizontal needle member (aka, straight butterfly needle) 3 having a “-” shape, a conveying pipe (conduit) 1, and a housing. It consists of the connector 2 connected with the connector part 20-5 of (20).

However, since the needle of the above-described method is composed of a straight butterfly needle member (3) is very painful to be inserted when the user inserts directly into his skin tissue. In other words, insulin, which is mainly used as a syringe injection for a long time, is injected by a diabetic patient by injecting a needle directly into the body, but a straight butterfly needle needs to be inserted into the body (skin tissue) at an angle so that it is directly inserted when inserting it. Check with your eyes. In this case, the user who injects the needle into his body is very painful. In addition, since the straight butterfly needle member 3 is inserted into the skin tissue at an angle, the flow becomes easy, so that the skin tissue is damaged and the pain is severely generated as the blood flows out.

Since the needle unit having the straight butterfly needle member 3 is inserted into the skin tissue at an angle as mentioned above, the needle is easily blocked by the cell tissue, and the injection of insulin is not smoothed. The diameter is bound to be thick. In this case, excessive insulin injection may occur, and expensive insulin waste may be caused. For example, the air in the delivery tube 1 and the needle member 3 must be completely removed before inserting the needle to supply insulin. To this end, the insulin is sent out by pumping of the automatic insulin injector to remove the air by discharging it out of the housing 20 through the transfer pipe 1 and the needle member 3, wherein the diameter of the transfer pipe 1 is large Positive insulin is thrown away.

To this end, a needle unit has been developed that can be bent directly into the skin to be used in a-shape, as shown in FIGS. 10 and 11, consisting of a needle member 3, a transfer pipe 1, and a connector 2.

The needle member 3 forms the shape of the needle 3-11 in the shape of “a”, and the needle 3-11 is inserted into the connection rib 3-12 and is connected to the connection rib 3. -12) to form the transfer pipe (1) integrally connected. The needle 3-11 inserted into the connecting rib 3-12 is formed such that the bent portion 3-13 is formed as shown in FIG. 11, and can be pushed when the needle 3-11 is inserted. The pressing piece 3-14 is integrally formed. The bacterial infection prevention member 3-14-1 made of the nonwoven fabric which has been sterilized in the forward direction is adhered to the pressing piece 3-14. The material of the bacterial infection prevention member 3-14-1 is used as natural wood pulp. The diameter of the feed pipe 1 is made thin, and the length is formed longer. The connector 2 is formed to connect to the lower end of the transfer pipe 1, forming a male screw portion (2-15) in the connector (2) having a protective cap (2--16) having a female screw portion (2-16) 17). In addition, the connector 2 is coupled to the connector portion 20-5 of the housing 20 of the automatic insulin injector, which connector portion 20-5 is coupled to form a female screw portion 20-5a. In Fig. 10, reference numerals 3-18 denote needle protection caps.

To receive insulin through the housing 20 of the automatic insulin injector using the syringe unit configured as described above, first, remove the protective cap (2-17) coupled to the connector (2) and the connector portion 20-5 ) And screw. Next, the needle protective cap 3-18 inserted in the needle 3-11 is removed. Then, the pressing piece (3-14) is inserted into the skin tissue of the user while pushing the fingertips. At this time, since the needle (11) is composed of a "b" type can be inserted into the skin tissue vertically so that the user can be instantaneously inserted without the need to visually confirm that the needle is inserted. Accordingly, the user can safely eliminate the pain that follows when the needle is inserted into his or her body, and can be conveniently used as shown in FIG. 13. There is no fear that the inlet of the needle 3-11 by the layered skin tissue will be blocked because it is inserted. Therefore, the supply of insulin can be facilitated. As the insulin can be smoothly supplied as described above, the diameter of the delivery pipe 1 can be reduced, and the length thereof can be increased. Since the diameter of the delivery pipe 1 can be reduced, the waste of insulin can be minimized and the cost can be reduced when the air in the delivery pipe 1 and the needle 3-11 is removed. As it can be lengthened, the width of the portion that can be inserted when used as shown in Figs. 12 and 13 can be widened for ease of use. As the natural nonwoven fabric sterilized in front of the pressing piece (3-14) is fixed, the pressing piece (3-14) made of synthetic resin is directly applied to the skin when the needle (3-11) is inserted into the skin tissue to supply insulin. We can prevent touching and can prevent bacterial infection. As the shape of the needle 3-11 is “a”, it is vertically inserted when used by injecting into the skin tissue. Thus, even when an external force is applied, the flow of the needle 3-11 does not easily occur, thereby causing tissue damage. Prevents blood flow and does not cause pain.

However, this type of syringe unit is used by installing a syringe protective cap (3-18) as shown in Figure 14, the syringe protective cap (3-18) is a diameter of the same diameter as the needle (3-11) (3-18) -1) and an insertion diameter 3-18-2 which is an inner diameter of a diameter larger than the diameter of the needle 3-11. Therefore, when inserting the syringe protective cap (3-18) to the needle (3-11), there is a problem that the needle (3-11) is fitted to the inner wall of the insertion diameter (3-18-1), etc. ), The diameter of the fitting diameter is small, and the injection liquid penetrates into the bacterial infection prevention member (3-14-1) due to capillary phenomenon when the injection liquid flows to remove the initial air, causing discomfort to the patient at the time of injection. . In addition, there is a sharp bent portion (3-11-1) between the vertical portion and the bent portion (3-13) of the needle (3-11), if the movement is severe during use as shown in Figure 15 (movement or work a lot, or use If the user intentionally moves the vertical tip position to the dashed state by necessity, excessive stress is applied to the bent portion 3-11-1, resulting in a problem in reliability of the product.

In order to solve this problem, a portable auto-injector was developed in which the rotating shaft was detached from the housing when the syringe was refilled with the syringe, and the position was easily set by looking at the position. 16 shows an example of such an automatic syringe, in which a syringe using a conduit 1 connected to a connector 2 is connected through a cover 110, and the cover 110 is sealed at the top of the housing 120. Combined as much as possible. The housing 120 corresponding to the cover 110 includes a syringe 21, a piston 122, a piston push means 150, and a rotation shaft 131 for providing power through the power providing means 130. The housing 120 has a control button 123 for commanding a control board (not shown), a display 124 such as an LCD for displaying a control state, and a battery cover 125 for fixing a battery for supplying power. And a reset button 121 for performing a reset function. 140 is a bottom cover.

FIG. 17 is a plan view of FIG. 16. The upper surface of the housing 120 includes a battery cover 125, a reset button 121, a cover 110, and a connector 2 connected to the cover 110. 2) has a configuration in connection with the conduit (1).

FIG. 18 is a plan view showing a structure in which the piston 122 and the push means 150 are placed and the power transmission means with the cover 110 of FIG. 17 omitted, and FIG. 19 is a sectional view taken along line VII-VII of FIG. In the lower center of the syringe holder 126 of the housing 120, a locking rotator 132 connected to the power supply unit 130, and a push means guide groove 25 for guiding the push means 150 to rise. And a piston guide groove 27 for guiding the linear vertical movement of the piston 122. The power providing means 130 and the locking rotator 132 are installed in the power providing means housing 130-1, and the power providing means housing 130-1 is coupled to the lower end of the housing 120.

FIG. 20 is an enlarged partial perspective view illustrating a coupling structure between the locking rotary hole 132 formed in the syringe holder 126 of the housing 120 and the rotating shaft 131 that is powered through the housing 120. A power supply means housing 130-1 is detachably coupled; A cross groove formed to be detachably coupled to the gear 132-3 coupled to the output end of the power supply means 130 and the coupling pin 133 of the rotary shaft 131 which is integrally formed with the gear 132-3. A locking rotor 132 having a 132-1; A rotating shaft (131) having a coupling pin (133) coupled to and separated from the cross groove (132-1) at a lower portion to linearly move the push plate (154) of the push means (150); A piston edge protrusion 122-2 which is screwed with the rotary shaft 131 and guides the push plate 154 along the push means guide groove 25 so as to be movable; and a piston edge integral with the piston 122 ( A piston edge having a push plate engaging projection 151-1 engaging with the push plate engaging groove 122-3 of 122-1 and a piston edge protrusion 122-2 guided along the piston guide groove 27. A piston 122 having a 122-1; It consists of a syringe 21 for supplying the injection liquid received along the piston 122 to the conduit 1 shown in FIG. The locking rotary ball 132 and the coupling pin 133 forms a coupling means. The power providing means (130-1) forms a guide ring plate (130-2) on a ring with an open top, and the guide ring plate (130-2) is a cross-shaped groove (132-) forming a locking rotary hole (132). Rotating shaft coupler 132-4 forming 1) is coupled.

FIG. 21 is an exploded perspective view illustrating the separated rotating shaft 131, the push means 150 coupled thereto, the piston 122, and the syringe 21, and FIG. 22 is a cross-sectional view illustrating a coupled state. 131 is made of a screw rod, the lower end of the rotary shaft 131 is formed integrally with the coupling pin 133 is coupled to the cross-shaped groove (132-1), the upper end of the cap screw for screwing the rotary shaft 131 (cap type) The head 131-1 is coupled. Push means 150 is screwed to the rotating shaft 131 to be movable. Push means 150 is a push plate 154 for screwing in the form of a nut and the rotating shaft 131, and a horizontal protrusion on the push plate 154 to engage with the push means guide groove 25 shown in FIG. Push plate guide protrusion 151, push plate coupling protrusion (151-1) coupled with the push plate coupling groove (122-3), the insertion protrusion (155) for fitting the piston 122, the insertion projection ( And a snap ring groove 156 on the ring formed in 155. A piston ring 122-4 is formed in the piston 122 corresponding to the snap ring groove 156. The piston 122 is coupled to the piston 122 for discharging the contents of the syringe 21 by a piston action, the piston edge 122-1 is formed at the lower end of the piston 122, the piston edge 122- Piston edge protrusion 122-2 is protruded in 1). The piston edge 122-1 also forms a push plate engaging groove 122-3 engaged with the push plate engaging protrusion 151-1.

23 is a cross-sectional view showing an example of the installation state of the reset button 121, the reset button 121 is coupled to the housing 120, at least one of the reset button 121 and the housing 120 for sealing The packing 121-1 is installed.

The syringe constructed as described above is first screwed into the insertion protrusion 155 and the push plate 154, the upper portion of the rotating shaft 131 is screwed inside, and then the lower portion is fitted with a coupling pin 133. And the upper end of the rotating shaft 131 is screwed to the head (131-1). Subsequently, the rotation shaft 131 and the insertion protrusion 155 of the push means 150 are integrally coupled to the push plate coupling groove 122-3 of the piston 122, and the push plate coupling protrusion 151-1 is provided. Fit to be coupled to the push plate coupling groove (122-3). In this case, the push plate coupling groove 122-3 is formed in a plurality of small pitch intervals in the form of a gear, and the coupling protrusions 151-1 for coupling thereto are easily assembled when formed intermittently. In order to obtain such convenience, if the push plate guide protrusion 151 is removed, the reference position is lost, so assembly is easy. Of course, if there is a guide protrusion (122-2) has the advantage of operating in the correct position. Then, the needle is inserted into a separate injection vial, and the syringe 122 is filled with the syringe 21 using the piston 122 and the rotating shaft 131 together. If the piston 122 in the pre-fill state is a dashed-dotted state in FIG. 22, the filled state may be represented by the solid line state in FIG. 22. In this case, check the sign (not shown) marked on the housing 120 so that the length of the rotating shaft 131 forms a set length (the length that can be coupled to the cross groove 132-1 of the locking rotator 132). Or, if you use a separate length check jig can conveniently adjust the exact capacity and the initial rotation axis 131 position. In such a state, when the coupling pin 133 enlarged as shown in FIG. 20 is lowered as shown by an arrow to be coupled to the cross groove 132-1 of the locking rotator 132, rotational force through the power providing means 130 is obtained. The rotating shaft 131 integrated with the coupling pin 133 rotates when the locking rotary ball 132 rotated by the gear 132-3 rotates. In this case, the rotational force is also transmitted to the screw-coupled push plate 154, but the push plate 154 has a push plate guide protrusion 151 to be supported along the push means guide groove 27, so that the push plate 154 has the rotation shaft 131. ) Is provided with up and down movement force without rotation.

Meanwhile, the coupling pin 133 is coupled to the cross groove 132-1 shown in FIG. 20 in a state where the length of the push means 150 and the rotation shaft 131 are screwed to form an initial position in advance. In this state, when the rotating shaft 131 rotates in the counterclockwise direction in FIG. 12, the rotating shaft 131 rotates and thus the push plate 154 supported by the push means guide groove 25 is raised, and the push plate ( The piston 122 coupled to the 154 is to inject the injection liquid held in the syringe 21 into the needle unit through the connector 2 for a long time. This supplies the injection liquid through the conduit 1 shown in FIG. 16, which provides the injection liquid to the human body through the needle (called the human body) of the needle unit. When the injection solution is provided for a long time, the piston 122 rises to the initial two-dot chain position, and the user detaches the needle unit from the body and stops using the syringe. That is, after use, the needle connected to the conduit is detached from the body, the connector 2 is also separated from the cover 110, the screwed cover 110 is loosened, and then the syringe 21 and the procedure of FIG. In the reverse order, the coupling pin 133 is separated from the cross groove 132-1, and then the syringe 21, the piston 122, the push means 150, and the rotating shaft 131 are integrally separated from the syringe holder 126. Let's do it. In the case of reuse, the injection liquid is injected by the action of a piston, and then rotated by hand to return the rotary shaft 131 to the original position as described above, so that the rotary shaft 131 enters the piston 122 as shown in FIG. 22 (solid state). . The adjustment may be indicated by a predetermined reference position anywhere on the housing 120, or may be provided with a separate reference position for displaying the reference position. In this case, the head 131-1 is screwed to the top of the rotating shaft 131 in the form of a cap, and once the push plate 154 and the rotating shaft 131 are screwed together, the rotating shaft 131 is formed by the head 131-1. Function to be separated from the push plate 154 to improve the durability of the product. Coupling pin 133 is adjusted to a predetermined position (length) in the above coupling so that the coupling pin 133 is inserted into the cross-shaped groove (132-1) of the locking rotator 132. In order to facilitate the coupling, the coupling position of the rotation shaft 131 and the push means 150 is adjusted in advance. The use of the separate rotating shaft 131 is a push means 150 is raised in accordance with the rotation of the rotating shaft 131 once the injection liquid is supplied due to the characteristics of the auto-injector, but should be returned to the initial position again when supplying the injection liquid. Due to the nature of supplying the injection solution for a long time, the rotational speed of the rotating shaft is extremely low, so that the rotational shaft 131 can be detachably detached in order to eliminate the return time, which is about 5-10 minutes. The rotary shaft 131 is rotated in only one direction to simplify the control function. In particular, the cover 110, the battery cover 125, the reset button 121 and the bottom cover 140 are all configured to seal, so that the injection liquid in the syringe 21 is supplied to the body, and thus the inside of the housing 120 If the reset button 121 coupled to the housing 120 is made of a known semi-permeable material having the characteristics of blocking water and releasing air, to prevent the overload of the piston 122 action due to the vacuum of the external air, The inflow is possible and the moisture infiltration is prevented to allow the ingress of moisture into the housing 120 and allow the inflow of external air to prevent the interior of the housing 120 from becoming a vacuum. This increases manufacturing costs when the entire housing 120 is made of a known semi-permeable material, but makes a part of the semi-permeable material to minimize the cost for this part, thereby maintaining the semi-permeable function and contributing to the advantage of installation and cost reduction. . In this case, the packing 121-1 is preferably provided at at least one of the reset button 121 and the housing 120 to maintain the sealing characteristics.

However, these autoinjectors function to enable sealing with the outside, but due to the nature of use, the insulin injection in the syringe flows down during initial setting and assembly to replace the used syringe 21, for example, the locking rotation shown in FIG. Infiltration into the gap between the sphere 132 and the housing 120 causes a fatal malfunction that limits the operation of the control board including the power providing means.

The present invention is to solve this, an object of the present invention is to provide a sealing means for frictionally sealing the gap between the rotating shaft for raising the syringe pushing means and the housing portion in which the power providing means is received by receiving a driving force through the power providing means. To provide a self-contained syringe.

To this end, the present invention is a locking rotary sphere of which the gear receiving power of the power providing means is integrated, the rotary shaft coupling sphere forming the output of the locking rotary unit is bonded to the guide ring plate integral to the power providing means housing, and the guide ring plate It is configured to include a friction sealing packing installed to be adhered between the inner surface and the outer circumferential surface of the locking rotor.

1 is a control block diagram of a conventional portable automatic syringe,

2 is a perspective view illustrating an installation example of the photo sensor of FIG. 1;

3 is a cross-sectional view of a conventional syringe in a state in which the configuration of FIG. 1 is used in combination;

4 is a front view showing another example of a conventional portable auto-injector,

5 is a plan view of FIG. 4;

6 is an exploded view taken along the line A-A of FIG.

7 is a front view showing an example of a conventional power supply means;

8 is an exploded view of a use state showing an example of a conventional push means,

9 is a perspective view showing an example of a conventional needle unit,

10 is a perspective view showing another example of a conventional needle unit;

11 is a partial cross-sectional view showing an example of the needle unit of FIG. 10;

12 is a partially enlarged view showing a state of use of the needle unit of FIG. 10;

13 is a perspective view showing a state of use of the needle unit of FIG.

14 is an enlarged cross-sectional view of a main portion of the needle unit of FIG. 10;

15 is an explanatory diagram showing a disadvantage in use of FIG. 14;

16 is a schematic configuration diagram of the present invention;

17 is a schematic plan view showing a connection state of the present invention;

18 is a plan view showing the present invention in a partially cut out horizontal cross-sectional view;

FIG. 19 is a cross-sectional view showing a sectional view taken along line XVIII of FIG.

20 is an enlarged partially cutaway exploded perspective view of the main portion of the present invention;

21 is an exploded perspective view of main parts of the present invention;

FIG. 22 is a cross-sectional view illustrating a coupling state of FIG. 21;

Fig. 23 is an enlarged cross-sectional view showing the configuration of the reset button of the present invention.

24 is an exploded view of a power supply housing coupled to a housing of the present invention;

25 is an enlarged cross-sectional view of the friction sealing packing used in FIG. 24;

26 is an enlarged cross-sectional view of a main portion showing a combined state of the present invention.

Explanation of symbols for the main parts of the drawings

1; conduit 2; connector 2-15; male threaded portion

2-16; Female thread 2-17; Protective cap 3; Needle member

3-11; needle 3-11-1; bend 3-12; connecting rib

3-13; Bend 3-14; Push piece 3-14-1; Bacterial infection prevention member

3-18; protective cap

3-18-1; fitting 3-18-2; insertion diameter 10; cover

11; screw groove 12; bolt screw 13; packing

20; housing 20-5; connector portion 21; syringe

22; Piston 23; Syringe Maker 24; Battery cover

25; push means guide groove 26; piston guide protrusion 27; piston guide groove

30; power supply means 31; rotary shaft 32; motor

33; deceleration mechanism 40; bottom cover 50; push means

51; push means guide protrusion 52; uneven means 54; lower disc

55; upper disc 110; cover 120; housing

121; reset button 122; piston 122-1; piston edge

122-2 piston edge protrusion 122-3; push plate coupling groove 123; control button portion

124; display 125; battery cover 126; syringe repairer

130; power supply means 131; rotary shaft 131-1; head

132; locking swivel 132-1; cross groove 133; coupling pin

140; bottom cover 150; push means 151; push plate guide protrusion

151-1; push plate coupling protrusion 154; push plate 155; insertion protrusion

156; snap ring groove

That is, the present invention is an automatic syringe having a power supply means housing for receiving the power supply means in the lower portion of the housing having a syringe holder,

A guide ring plate protruding integrally from the power supply housing so that the locking rotor having the power transmitted from the power providing unit is integrally formed, and the rotating shaft coupling unit forming the output of the locking rotary unit is adhered to the inner surface and the upper end of the rotating shaft coupling unit is exposed. And it is configured to include a frictional seal packing on the ring to form an elastic ring for the lower part is open so as to be bonded between the inner surface of the guide ring plate and the outer peripheral surface of the locking rotation.

The friction sealing packing may include a friction ring having an open lower portion and an elastic ring receiving hole formed at the center thereof, an elastic ring stored in the elastic ring fixing hole on the inner surface of the friction ring, and an outer portion of the elastic ring to uniformly provide elastic force of the elastic ring. It consists of an elastic ring slit vertically cut at regular intervals, the lower diameter of the outer ring of the friction ring is larger than the upper diameter is configured to have a push large diameter portion that provides an elastic force between the guide ring plate and the locking rotary ball when engaged.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

24 is an exploded perspective view of the present invention, the power supply means housing 130-1 for receiving the power supply means 130 to be used coupled to the lower housing 120 of the auto-injector, and to block the bottom of the power supply means housing The bottom cover 140, the power providing means 130, and the friction sealing packing 200 is shown in a disassembled state. The power supply housing 130-1 and the bottom cover 140 are coupled to each other by screws 141. The bottom cover 140 forms a fitting hole 142 to which the rotating shaft 132-5 of the locking rotator 132 is attached. The locking rotary hole 132 is a gear 132-3 having a deceleration function, and a rotating shaft coupling hole 132-4 integrally formed with the upper surface of the gear 132-3 to be exposed to the outside of the power providing means 130-1. ). A guide ring tube 130-2 having a central opening is formed on an upper surface of the power providing means housing 130-1, and a friction sealing packing between the guide ring tube 130-2 and the rotating shaft coupling hole 132-4. Coupling to seal each other via 200).

FIG. 25 is an enlarged cross-sectional view of the friction sealing packing 200 shown in FIG. 24. The friction ring 210 has an open lower portion and an elastic ring fixing hole 211 formed at the center thereof, and the number of elastic rings on the inner surface of the friction ring 210. It consists of an elastic ring 220 to be stored in the long hole 211, and an elastic ring slit 221 vertically cut the outer diameter portion of the elastic ring 220 at regular intervals to uniformly provide the elastic force of the elastic ring 220 ,

The lower portion of the outer diameter of the friction ring 210 has a larger diameter than the upper portion so as to have a push large diameter portion 212 that provides an elastic force between the guide ring plate 130-2 and the locking rotary hole 132 at the time of coupling. The inner diameter portion 213 of the friction sealing packing 200 has a size that friction fitting so that the rotary shaft coupling hole (132-4) can provide a sealing property.

FIG. 26 illustrates a rotation shaft coupling hole 132-4 constituting the locking rotation hole 132 and a guide ring plate 130-2 of the power supply housing 130-1 through the mutual friction sealing packing 200. In the enlarged sectional view of the main part showing the state, the friction sealing packing 200 has a friction ring 210 having an open lower portion and an elastic ring fixing hole 211 formed at the center thereof, and an elastic ring fixing hole having an inner surface of the friction ring 210 ( An elastic ring 220 to be stored in the 211, and the elastic ring slit 221 vertically cut the outer diameter portion of the elastic ring 220 at regular intervals to uniformly provide the elastic force of the elastic ring 220.

According to the present invention configured as described above, a friction sealing packing 200 is formed between the rotating shaft coupling hole 132-4 and the guide ring plate 130-2 of the locking rotary hole 132 constituting the power providing means 130 shown in FIG. It is used in the state shown in FIG. That is, during assembly, the power providing means 130 is coupled to the output shaft of the motor 120-1 so as to transmit power, and at the same time, the friction sealing packing 200 is first coupled to the outer circumference of the rotating shaft coupling hole 132-4. Then, the combined friction sealing packing 200 is fitted to the inner circumferential surface of the guide ring plate (130-2) to be able to fit. In this case, the lower end of the outer diameter of the friction ring 210 has a relatively large diameter push part 212 is in contact with the inner diameter of the guide ring 130-2 is changed to a solid line state in the dotted line state of FIG. In addition, the rotary shaft coupler 132-4 and the guide ring plate 130-2 have a sealing property because they maintain a constant friction force. In the case of the present invention, the outer surface and the friction ring 210 of the rotating shaft coupler 132-4 may be made of a slippery material having a small mutual frictional force. In addition, since the outer peripheral surface of the elastic ring 220 constituting the friction sealing packing 200 has an elastic ring slit 221 vertically cut at a predetermined distance interval, the guide ring plate 130 as shown in FIG. 26 when the push large diameter part 212 is assembled. -2) even when the diameter is reduced to reduce the outer diameter of the elastic ring 220 by interlocking naturally maintains the elastic force of the rotating shaft coupler (132-4) and the guide ring plate (130-2) uniformly. In this case, since the friction sealing packing 200 has an elastic ring receiving hole 211 therein, the diameter of the elastic ring 220 can be flexibly adjusted.

The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, the present invention provides a sealing property by installing a friction sealing packing at a rotating shaft coupling portion forming an inner gap between the housing of the portable auto-injector and the power supply means housing, and the friction sealing packing is provided between the guide ring and the rotating shaft coupling. The friction seal packing should be placed in the friction seal packing so that a constant elastic force acts uniformly radially to provide sealing properties. Therefore, even if the insulin injection liquid leaks in the housing, it is blocked by the friction sealing packing so that it does not move to the power supply means housing, thereby protecting wear and damage of the power supply means and a separate control board, thereby improving durability. Improve the reliability of the product.

Claims (2)

In an autoinjector having a power supply housing for receiving a power supply means in a lower portion of the housing having a syringe lock, A guide ring plate protruding integrally from the power supply housing so that the locking rotor having the power transmitted from the power providing unit is integrally formed, and the rotating shaft coupling unit forming the output of the locking rotary unit is adhered to the inner surface and the upper end of the rotating shaft coupling unit is exposed. And a ring-shaped friction sealing packing having a lower portion open to be bonded between an inner surface of the guide ring plate and an outer circumferential surface of the locking rotary hole to form an elastic ring retaining hole. According to claim 1, wherein the friction sealing packing is a friction ring having an opening is formed in the lower portion of the ring and the elastic ring receiving hole is formed in the center of the ring, an elastic ring stored in the elastic ring mounting hole of the inner surface of the friction ring, It is composed of an elastic ring slit vertically cut the outer portion of the elastic ring at regular intervals to uniformly provide the elastic force, the lower diameter of the outer ring of the friction ring is larger than the upper diameter provides an elastic force between the guide ring plate and the locking rotary ball when engaged. An internal sealable auto-injector, characterized in that configured to have a push large diameter to.