KR102047319B1 - Cap preventing separation for needle-hub of syringe having easy installation - Google Patents

Abstract

The present invention relates to a needle hub separation preventing cap for a syringe and, more specifically, to a needle hub separation preventing cap capable of preventing separation of a needle hub caused by injecting pressure of a syringe or combining pressure of a needle assembly, and preventing damage of a neck unit of the syringe by dispersing external force transmitted through the needle hub. The needle hub separation preventing cap for a syringe forms a plurality of friction functions on the outside to prevent sliding from a gripped device or hands when assembled in the syringe having the needle hub; is easily mounted by providing elastic deforming force from a center shaft to a side direction; prevents the damage of the neck unit of the syringe by mounting pressure; and prevents separation of the needle hub from the syringe when the injecting pressure is applied. The present invention comprises a supporting pipe unit (20), a fixed unit (30) and a plurality of extending units.

Description

Needle Hub Leaking Prevention Cap for Syringe Easy to Install {CAP PREVENTING SEPARATION FOR NEEDLE-HUB OF SYRINGE HAVING EASY INSTALLATION}

The present invention relates to a needle hub release prevention cap for a syringe, and more particularly, to prevent the needle hub from being removed by the injection pressure of the syringe or the coupling pressure of the needle assembly, and by dispersing the external force transmitted through the needle hub. It relates to a needle hub departure prevention cap to prevent breakage of the neck. Particularly, a number of friction functions are formed on the outer surface to prevent slipping from the gripper or the hand when assembling the syringe equipped with the needle hub, and the elastic deformation force is provided from the central axis to the lateral direction to facilitate the mounting. The present invention relates to a needle hub detachment cap for a syringe which prevents breakage of a syringe neck due to mounting pressure, and prevents needle hub from being removed from the syringe when the injection pressure is applied.

In general, the syringe is composed of a nozzle having a needle, a main body having a cylindrical portion for storing the injection liquid therein, and a piston which is slidably inserted into the main body to change the volume of the inner space of the main body. do. The main body has a structure in which a neck part is formed to reduce the outer diameter at one end thereof so that the nozzle is coupled, and the other end is opened to inject the piston.

Such a syringe may be classified into a form in which an injection solution stored in a separate container is used as a syringe before use, and a form in which the injection solution is stored and stored in the syringe. Among them, in the case of storing and storing the injection liquid inside the syringe, a glass material syringe is used to prevent the injection liquid from being altered by the syringe material during storage.

Since the glass syringe has a smooth surface, the nozzle is easily removed by the injection pressure of the injection liquid when the nozzle equipped with the needle is directly used, and the reliability and processability of the size precision of the syringe neck to which the nozzle is coupled is low. .

Therefore, the needle hub for easily coupling the nozzle is mounted on the neck of the glass syringe. The needle hub is fixed to the narrow end of the narrow end formed in the neck portion of the main body with a tight fit, and forms a screw thread on the inner circumferential surface of the front direction in which the nozzle is mounted, integrally coupled by the nozzle and screwing the glass of the main body It solved the disadvantage that the nozzle coupling was difficult while preventing easy removal by injection pressure due to the material.

However, the needle hub has a side effect of breaking the neck by transmitting the external force acting on the body neck made of interference fit, there is a problem that the needle hub is removed at high pressure injection pressure.

Korean Laid-Open Patent Publication No. 2003-0020283 (published on March 8, 2003; hereinafter referred to as 'Previous Document 1') proposes a medical luer lock type sealing connection device and a syringe having the same. Prior art 1 forms a circular band or cord coated on a syringe nozzle (neck) to prevent the flange (needle hub) coupled to the nozzle (neck) from being separated by an external force.

However, the prior document 1 has a disadvantage that the risk of damage to the nozzle portion is increased because the load transferred from the needle assembly is concentrated to the nozzle portion through the entire flange. In addition, the high pressure injection pressure generated during the injection of the injection solution is concentrated on the flange support portion, causing deformation of the flange support portion, thereby causing a problem that the flange is removed from the nozzle.

Korean Patent Registration No. 10-1494698 (registered Feb. 12, 2015; hereafter referred to as 'Previous Document 2') presented a needle hub departure prevention cap. The prior document 2 forms a plurality of ring protrusions on the inner surface of the support tube portion of the release prevention cap to be in close contact with the outer surface of the needle hub to receive the load transferred to the needle hub by the release prevention cap to support the load by the concentration of the neck of the syringe Breakage was prevented.

However, the prior document 2 is well formed when the release prevention cap is attached to the needle hub by forming almost the same inner diameter of the needle hub and the inner diameter of the support tube to increase the adhesion between the needle hub and the inner surface of the support tube portion of the release prevention cap. There is a risk that the fitting pressure is transmitted to the neck of the syringe supporting the needle hub during the fitting process. In addition, the outer surface of the release prevention cap is formed with a smooth curved surface, so the friction force is low, so when the attachment prevention cap is attached to the needle hub, the hand or the gripping mechanism holding the release prevention cap slips, which makes it difficult to transmit the exact force. The risk is increased.

Accordingly, the needle hub is prevented from being removed when the injection pressure of the high pressure is generated through the release preventing cap as in the prior reference 2, but is easily mounted on the needle hub to prevent the breakage with a new structure that can prevent damage in the mounting process. The need for a cap has emerged.

Korean Laid-Open Patent Publication No. 2003-0020283 (2003.03.08. Published): medical luer lock type sealing connection device and a syringe having the same Korea Patent Registration No. 10-1494698 (2015.02.12.registration): Needle hub departure prevention cap

Needle hub departure prevention cap for the syringe of the present invention for solving the problems of the prior art as described above,

An object of the present invention is to provide a release preventing cap having a structure in which the inner diameter of the release preventing cap is expanded by pushing the shaft in an axial direction so that the attachment to the needle hub can be easily performed.

Needle hub departure prevention cap for the syringe of the present invention for solving the above problems,

A needle hub detachment cap for fixing a needle hub to a syringe body to prevent the needle hub from being removed from the syringe by the injection pressure of the injection liquid, wherein the inner surface of the needle hub and the inner surface are in contact with the outer surface of the needle hub, A support pipe portion protruding in a direction to block the needle hub from being discharged forward by the injection liquid injection pressure; A fixed attachment ring which is extended outward from the rear end of the support tube and fixed to one end of the syringe, wherein the support tube further includes one or more expansion means having a diameter expanded by mounting pressure when mounted on the needle hub. It is characterized by being formed.

The expansion means may be formed as an expansion hole elongated in the front and rear direction on the side wall between the front end and the rear end of the support pipe.

In addition, the expansion means may be a wrinkle portion formed by one or more expansion grooves from the front end to the rear end on the outer surface of the support pipe.

In addition, the front end region and the rear end region, in which the expansion hole of the support pipe part is not formed, are formed with corrugations formed by one or a plurality of expansion grooves at positions displaced from the expansion hole. When the external force is applied by the continuous arrangement of the expansion hole and the rear wrinkles, the diameter can be made elastic.

In addition, any one or both of the inner surface of the support tube portion between the expansion means and the inner surface of the fixed attachment ring portion contacting the syringe body may be provided with a plurality of thin dome-shaped suction grooves to allow vacuum suction to the needle hub and the syringe body. Can be.

In addition, the fixation ring portion may further be formed by extending the extension tube portion extending from the edge to the rear end of the syringe body formed with the injection tube portion to support.

Needle hub departure prevention cap of the present invention by the above solving means,

The support tube portion surrounding the needle hub and the fixed ring contact portion in contact with the end of the injection tube formed in the syringe body to form a corrugated portion formed with a plurality of expansion grooves in the axial direction, or by forming one or more axially expanded expansion holes in the support tube portion When the external force is applied, the diameter of the support tube is elastically extended so that the mounting with the needle hub can be easily performed. At this time, the wrinkle portion or the expansion hole formed on the outer surface of the separation prevention cap can eliminate the inconvenience of slipping off the separation prevention cap in the mounting process by increasing the friction force on the separation prevention cap outer surface.

In addition, by the plurality of adsorption grooves formed on the separation prevention cap inner surface, the separation prevention cap and the needle hub or the syringe body is vacuum-absorbed to prevent the adhesion between the separation prevention cap and the needle hub due to the expansion hole is reduced. It is possible to provide a separation prevention cap having a new structure to prevent the removal of the needle hub according to the injection pressure of the injection while making it easy to install the separation prevention cap on the hub.

Figure 1a is a perspective view showing a separation prevention cap is formed expansion hole according to a preferred embodiment of the present invention.
Figure 1b is a vertical cross-sectional view showing a syringe coupled state of the separation prevention cap of the present invention.
Figure 1c is a schematic diagram for explaining the elastic deformation process when the separation prevention cap of the present invention is coupled to the needle hub.
Figures 2a to 2d is a perspective view showing a separation prevention cap formed wrinkles in accordance with an embodiment of the present invention and a horizontal cross-sectional view of the support pipe.
Figure 3a and Figure 3b is a perspective view and a horizontal cross-sectional view showing a separation prevention cap formed expansion hole and wrinkles according to an embodiment of the present invention.
Figure 4a and Figure 4b is a perspective view of the support tube formed with a suction groove according to an embodiment of the present invention and a vertical cross-sectional view combined with the needle hub.
5a to 6 are a perspective view and a cross-sectional view of the separation prevention cap formed with an adsorption groove in the fixed attachment ring according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. The present invention may be modified in various ways and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the present invention. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged or reduced than actual for clarity of the invention.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise", "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, or combination thereof described on the specification, and one or the same. It is to be understood that the present invention does not exclude in advance the possibility of the presence or addition of other features, numbers, steps, operations, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those generally used and defined in the dictionary should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. .

Figure 1a is a perspective view showing the separation prevention cap is formed expansion hole according to a preferred embodiment of the present invention, Figure 1b is a vertical cross-sectional view showing a state mounted on the syringe to contain the needle hub.

The syringe 60 to which the release preventing cap 10 of the present invention is mounted includes a syringe body 61 filled with an injection liquid therein, an injection tube portion 62 protruding forward from the front end of the syringe body, and the injection tube portion. And a neck 63 formed between the syringe body and a smaller diameter than the injection tube. The syringe 60 is formed of a glass material to prevent deterioration because the injection solution is contained therein.

The needle hub 50 is mounted to the injection tube 62 of the syringe 60, and the needle assembly 70 is integrally coupled with the syringe through the needle hub 50. The needle hub 50 is in the form of a container through the central through the injection pipe portion and positioned in the syringe neck (63) to make a latch. A thread is formed on the inner surface of the needle hub, and screwed with the needle assembly 70 including the assembly body 72 and the needle 71 to be integrally coupled.

Wherein the needle hub 50 is caught in the injection tube 62 and the neck 63 of the glass syringe, the gap between the neck 63 and the needle hub 50 due to product failure or mounting failure or other factors When largely generated, the needle hub 50 may be removed by sliding forward when the injection pressure of the syringe is generated. Therefore, the separation prevention cap 10 is additionally mounted to allow the separation prevention cap 10 to support the needle hub 50, thereby preventing the needle hub from being removed by the injection pressure.

The separation prevention cap 10 according to the present invention has a function of preventing elasticity of the needle hub 50 by the injection pressure while making elastic deformation to the outside to facilitate the mounting with the needle hub. . Such elastic deformation may be provided by forming the separation prevention cap itself as a material that can be expanded and restored, but it is difficult to restore the original position when excessive expansion exceeds the recovery limit of the material. This can be done sufficiently.

As described, the needle hub departure prevention cap 10 for a syringe according to the present invention includes a support tube portion 20 and a fixed attachment and return portion 30 continuously formed at the rear end of the support tube portion.

The support pipe part 20 is formed with a support jaw 21 at the front end. The support jaw 21 protrudes a predetermined length from the front end of the support pipe part in the direction of the central axis, and the needle hub 50 inserted into the rear from the rear end is passed through the support pipe part 20 so as to be prevented from being discharged forward. When the injection pressure acts to push the needle hub forward, the needle hub is fixed so as not to be pushed forward. In other words, it prevents the needle hub from coming off by the locking in addition to the side pressure.

The inner diameter of the support tube portion 20 is formed to be the same or similar to the outer diameter of the needle hub 50 so that the needle hub 50 is firmly inserted into the support tube portion 20, and between the support tube portion and the needle hub It is difficult to install the separation prevention cap on the needle hub because the gap is minute.

Therefore, the present invention forms an expansion means on the side wall of the support tube 20 to facilitate the coupling through the temporary elastic expansion when mounted on the needle hub and can provide a support force by close contact by elastic recovery after the coupling It was made.

The expansion means may be formed as expansion holes 22, as shown in Figure 1a. The expansion hole 22 is formed on the side wall between the front end and the rear end of the support pipe portion 20, the length of the inner side wall spaced a predetermined distance from the front end and the rear end of the support pipe in order to maintain the support pipe 20 It is provided in the form long through the direction.

A plurality of expansion holes 22 may be disposed along the circumference of the support pipe, but preferably, two to four holes may be formed to increase the frictional force on the outer surface of the support pipe while minimizing slippage during mounting by minimizing the elastic deformation width. Can be.

As shown in FIG. 1C, the needle hub 50 is inserted into the support tube part 20 from the rear of the release preventing cap 10 when being mounted, and in this case, the needle hub 50 is inserted into the support tube part 20 while the coupling pressure is increased. It is transmitted to the support pipe portion, the support pipe portion 20 is elastically extended to the outside as the width of the expansion hole 22 is widened, the inner diameter of the needle hub 50 can be easily made by the expansion of the inner diameter of the support pipe portion. When the coupling is completed and the coupling pressure is removed, the elastic extension hole is restored to its original position and the separation prevention cap is in close contact with the outer surface of the needle hub.

The expansion means may be formed by the pleats 23 formed by the expansion groove 231 as shown in Figures 2a and 2b.

The corrugation part 23 is formed on the outer surface of the support tube part 20, but is not a through-hole like an expansion hole, even if formed in the entire surface from the front end to the rear end of the support tube part can be maintained in the form of the support tube part. This is because the expansion hole 22 provides a partial elastic expansion, while the pleats 23 may provide elastic expansion in the entire area of the support pipe, thereby making the needle hub 50 more easily inside the release preventing cap 10. Can be combined.

The wrinkles 23 is provided in the form of one or a plurality of expansion grooves 231 formed in the axial direction on the outer surface of the support tube as shown. The formation of the pleats 23 may be formed on the entire surface of the support pipe or at equal intervals to allow partial elastic expansion. The expansion groove 231 may be formed in various shapes such as a V-shaped cross section, a U cross section, a semicircular cross section, and a square cross section.

In addition, the wrinkles 23 may be formed on the inner surface of the support tube 20, in the present invention is formed on the outer surface of the support tube to provide an elastic expansion force in addition to the function of holding a cap to prevent the release of the cap or friction when contacting the device Increased the frictional force increase function to prevent the slipping when the separation cap is coupled to the needle hub to increase the binding properties.

The wrinkles 23 are also formed in the fixed ring portion 30 connected to the support tube portion 20, as shown in Figure 2c to facilitate the insertion of the needle hub so that the fixed ring portion also extends as a certain amount when the support tube elastic expansion Can be done.

Also, as shown in FIG. 2D, the number of expansion grooves 231 forming the corrugation part 23 is partially different, so that some sections of the entire section increase the elastic extension force and the other sections strengthen the structural strength. Can be provided. That is, in the case of the pleats 23 having a variable number of expansion grooves, at least one expansion groove is formed from the front end to the rear end of the support pipe part to provide basic elastic extension force in the entire longitudinal section of the support pipe part, and The expansion groove may be further formed to increase the elastic extension force of some sections of the entire wrinkled section. In this way, when the pleat portion 23 is formed in a variable shape, the number of expansion grooves is increased in the lower region of the support tube portion in which the needle hub is first inserted to facilitate the insertion, and only the basic expansion groove is provided in the middle region and the upper region of the support tube portion. It can be formed to limit the elastic expansion to prevent the adhesion is reduced after bonding. In particular, by reducing the number of expansion grooves on the upper end of the support tube 20, the support jaw 21 formed on the upper end of the support tube can be prevented from spreading from the top of the built-in needle hub to provide sufficient support force by the support jaw when the injection pressure is generated. .

The expansion means may be formed in a mixture of the expansion hole 22 and the pleats 23 as shown in Figure 3a and 3b.

As shown, the top and bottom of the side wall of the support tube 20 must maintain the tubular shape to form the corrugations 23,232 and 233 in a short length, and the expansion hole 22 is formed in the middle region of the support tube portion in which the corrugations are not formed. Therefore, it is possible to provide elastic expansion force in the entire section of the support pipe.

That is, the side wall of the support tube 20 may be axially extended in front of the circumferential portion 232, the expansion hole 22 and the rear pleat portion 233 so as to extend the diameter during the rotational force in all sections.

Here, when the front and rear corrugations 232 and 233 and the expansion holes 22 are disposed on the same straight line, structural strength in the outward direction perpendicular to the axis is lowered, so that the corrugations 232 and 233 and the expansion holes 22 as shown in FIG. ) Is preferably configured to be spaced apart from each other. Also, both the front and rear wrinkles may be formed, or only the rear wrinkles may be formed without the front wrinkles so that the inner diameter of the support tube may be expanded only in the initial process of injecting the needle hub.

In addition, as shown in Figure 4a and 4b the needle hub departure prevention cap 10 according to the present invention, a single dome-shaped adsorption groove 24 in the inner surface of the support tube portion is not formed expansion hole 22 or Forming a large number can improve the adhesion to the needle hub 50 after the needle hub and the fastening.

That is, when the needle hub is slightly pressed after the coupling of the needle hub to the inside of the support tube part 20 of the separation prevention cap, the air of the dome-shaped suction groove () formed on the inner side of the support tube part is discharged to the outside and the suction groove 24 is formed. ) And the needle hub 50 is vacuum or negative pressure is adsorbed on the needle hub outer surface.

This vacuum suction can support the side wall of the support tube part to the needle hub outer surface by the vacuum suction even if the inner diameter of the support tube portion 20 extended to insert the needle hub 50 does not completely return to its original position. The support jaw 21 of the needle hub in the correct position is caught on the upper surface of the needle hub can be prevented by removing the needle hub by the support jaw when the injection pressure is applied.

In addition, a resin coating layer coated with a synthetic resin material may be further formed on the inner surface of the separation prevention cap to facilitate the adsorption by the adsorption groove. In this case, the adsorption groove may be formed on the inner surface of the support pipe part, and the resin coating layer may be coated to a predetermined thickness on the whole, or the resin coating layer may be formed on the inner surface of the support pipe part, and the adsorption groove may be formed on the resin coating layer. The synthetic resin material is generally used as a material used as a vacuum suction sucker.

5A and 5B, the adsorption groove 24 may be formed on the bottom surface of the fixation ring portion 30 so that the fixation ring portion may be vacuum-adsorbed to the front end portion of the syringe 60.

At this time, the adsorption groove 24 may be provided in an annular form in addition to the thin dome shape as shown to make the adsorption.

Fixing ring portion 30 of the present invention is provided in the form of a conical tube attached to the syringe 60, or extended to the rear from the edge of the fixation ring portion 30 to contain the front end portion of the syringe as shown in FIG. The mounting tube part 31 may be further formed.

The extended fitting pipe part 31 has a plurality of suction grooves 24 formed on the inner surface thereof, and is vacuum-adsorbed on the side wall of the syringe front side to fix the syringe 60 and the release preventing cap 10 integrally to prevent separation when the injection pressure is generated. The supporting jaw of the cap firmly walks on the needle hub to prevent the needle hub from coming off.

Needle hub departure prevention cap 10 of the present invention is configured as described above, when the needle hub 50 mounted on the syringe 60 is introduced into the support tube portion of the release prevention cap support pipe portion 20 by the coupling pressure The expansion hole 22 or the pleated portion 23, which is formed in the elastic means, is easily expanded while the needle hub 50 is inserted therein.

In this process, the expansion means is formed on the outer surface of the support pipe portion, so that the frictional force on the support pipe outer surface can be increased to enable a non-slip coupling even if the operator or device is not strongly held.

In addition, when the coupling pressure is removed, the expanded expansion hole 22 or the pleated portion 23 is restored to its original position, and the support tube portion 20 is closely disposed on the outer surface of the needle hub 50.

In the present invention coupled as described above, the separation prevention cap 10 is integrated by bonding or adsorption or interference fitting to the front end of the syringe body 61 so that the injection pressure generated when the injection solution stored therein pushes the needle hub forward. The support jaw of the anti-separation cap is fixed by walking the needle hub can prevent the removal of the needle hub.

10: Leaving prevention cap
20: support pipe part
21: support jaw 22: expansion hole
23: wrinkle portion 24: adsorption groove
231: expansion groove 232: front wrinkles
233: rear wrinkles
30: fixed return part
31: extension pipe 34: suction groove
50: Needle Hub
60: syringe
61: syringe body 62: injection tube
63: neck
70: needle assembly
71: needle 72: assembly body

Claims (6)

In the needle hub detachment cap for fixing the needle hub to the syringe body to prevent the needle hub from being removed from the syringe by the injection pressure of the injection liquid,
A support tube portion surrounding the needle hub 50 and having an inner surface in contact with an outer surface of the needle hub, and having a support jaw 21 protruding in the central axis direction from the front end to block the needle hub from being discharged forward by injection liquid injection pressure. 20;
Consisting of the fixed ring portion 30 is extended to the outside from the rear end of the support tube fixed to one side end of the syringe (60),
The support tube portion needle hub departure prevention cap, characterized in that further formed; one or more expansion means diameter is expanded by the mounting pressure when mounted on the needle hub. The method of claim 1,
The expansion means,
Needle hub departure prevention cap, characterized in that formed in the side wall between the front end and the rear end of the support tube portion 20 extending in the longitudinal direction through the long hole (22). The method of claim 1,
The expansion means,
Needle hub departure prevention cap, characterized in that the wrinkles 23 formed by one or a plurality of expansion grooves 231 from the front end to the rear end at the outer surface of the support tube 20. The method of claim 2,
In the front end region and the rear end region where the expansion hole 22 of the support pipe portion 20 is not formed, corrugations 23, 232, and 233 formed by one or more expansion grooves 231 at positions displaced from the expansion holes. ) Is formed,
The support hub part side wall prevention needle cap, characterized in that the diameter of the elastic extension when the external force is applied to the continuous arrangement of the front wrinkles 232 and the expansion hole 22 and the rear wrinkles 233 in the axial direction. The method of claim 1,
A plurality of thin dome-shaped adsorption grooves 24 and 34 are formed on one or both of the inner surface of the support tube portion between the expansion means and the fixed ring portion contacting the syringe body to form the needle hub 50 and the syringe body ( 61) Needle hub departure prevention cap, characterized in that the vacuum adsorption is made. The method of claim 5,
The fixing ring portion 30 is a needle hub departure prevention cap, characterized in that the extended extension tube portion 31 extending from the edge is further formed to support the injecting the main body of the syringe body 61 formed with the injection tube portion.

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