WO2010036003A2

WO2010036003A2 - Reversible disposable blood vessel resin needle

Info

Publication number: WO2010036003A2
Application number: PCT/KR2009/005385
Authority: WO
Inventors: 송경진; 송중식; 송영식; 송원기; 송원찬; 채헌; 송인정; 채제완
Original assignee: Song Gyung Jin; Song Jerng Sik; Song Young Sick; Song Won Gi; Song Won Chan; Chae Heon; Song In Chung; Chae Je Wan
Priority date: 2008-09-26
Filing date: 2009-09-22
Publication date: 2010-04-01
Also published as: KR100898254B1; WO2010036003A3

Abstract

The present invention provides a reversible disposable blood vessel resin needle, which comprises a cylinder having a resin tube at the forward end, through which an injection solution is injected into a blood vessel; a metal needle furnished in the cylinder to optionally slide back and forth and disposed at the forward end to be exposed to the exterior via said resin tube, and a piston, formed on one side of the metal needle, which has a water pathway formed such that an injection solution may be supplied into the cylinder which is extended to and formed with a body part as a single unit with the forward end and an elastic tube part formed as an extension of said body part and furnished at a reduced thickness, having elasticity and with a terminal end part that is joined to the end part of said piston. In the present invention of such configuration, a part of the body of the cylinder is formed into a stretching tube of a flexible material and the end part is combined and connected with the piston to afford a streamlined configuration, wherein inner sealing properties of the cylinder may be maintained with stability, and an injection solution such as blood or an aqueous solution may be blocked from being exposed externally and sources of contamination blocked from infiltration, so that advantageously enhanced reliability is anticipated. In addition, puncture due to a metal needle caused by operator carelessness may be prevented in advance, thus enhancing useful effects including safety and convenience for handling.

Description

Reversible Disposable Vascular Needle

The present invention relates to a vascular resin needle having a resin tube and a metal needle used to inject blood or fluid into a blood vessel, and more particularly, to a flexible material that can be freely folded or unfolded. The structure connecting the end part to the piston enables the structure to be simplified and to ensure stable airtightness. Also, the metal needle located inside the cylinder tube can be easily operated from the outside to increase the ease of use for stable operation. It relates to a reversible disposable vascular needle.

In general, the vascular resin needle is inserted into the resin tube and injected into the blood vessel using a metal needle with a protruded tip. The metal needle is removed from the resin tube and separated from the resin tube. I can do it. However, since the metal needle is inserted into the blood vessel using the metal needle, the metal needle can be immediately removed to connect the blood transfusion line or the transfusion line. Therefore, there was a defect in which blood or fluid flowed from the resin tube inserted into the blood vessel during the connection. When connecting a fluid line, there was always a risk of bacterial infection from AIDS, hepatitis, or other pathogens.In particular, if a patient is AIDS and injects a blood transfusion or fluid into a patient, the blood will be removed from a blood vessel. There is a high concern that the person who handles it is susceptible to AIDS if the person handling it is injured by metal needles.

In order to solve this problem, the applicant has registered an improved reversible disposable vascular needle through Korean Patent No. 0616246, but the above-patented patent is not suitable for mass production due to its complex structure and high manufacturing cost. As a result, economic dissemination was difficult.

In addition, the handle has to be rotated repeatedly several times, there is a problem in that the convenience of operation is inferior. In order to solve such a problem, the applicant has proposed an improved reversible disposable vascular resin needle through the Republic of Korea Patent Application No. 10-2008-0006485.

However, many of the vascular resin needles previously applied by the present applicant have been proposed as a structure in which a piston, which is an inner cylinder, is slide-inserted into a cylinder tube, which is mostly an outer cylinder, but is injected into a gap between the cylinder tube and the piston (blood, fluid) ) Is permeated or blood flow back in the blood vessels. In addition, the conventional vascular needles to prevent the leakage of blood or sap to the outside through the structure that connects the cylinder tube and the piston tube with a thin film-based cylinder to prevent foreign substances or contaminants from flowing in from the outside. However, due to the complicated structure, manufacturing was difficult and the cost of production increased.

Meanwhile, the applicant has proposed an improved vascular resin needle through Patent Registration No. 10-0806017 which focuses on a technique of interlocking and moving a magnetic core having a metal needle by magnetic force using magnetic force. The blood vessel resin needle is provided with a metal needle provided inside the cylinder tube integrally with the magnetic core, and the magnetic ring provided on the outside of the cylinder tube provided with a magnetic ring for interlocking the magnetic core on the outside of the cylinder tube. It is possible to operate the metal needle forward and backward simply by moving the key.

However, the vascular resin needle having the magnetic ring and magnetic core body, which the applicant has previously filed, is difficult to mass-produce due to the difficulty in the production process in manufacturing the magnetic core body having the magnetic needle and integrally with the metal needle, and thus the production production There was a disadvantage of increased cost. In addition, since the expensive magnetic core and the magnetic ring have to be disposed of after one use, there was a significant economic loss.

The present invention was created in order to solve the problems of the prior art as described above, the present invention improves the connection structure of the cylinder tube and the piston tube to ensure a simple structure and high airtightness, metal during the front and rear operation of the piston It is to provide a reversible disposable vascular resin needle that can prevent the puncture of the cylinder tube by a needle to reduce the risk of safety accidents due to careless handling.

Reversible disposable blood vessel needle according to an embodiment of the present invention for achieving the above object, the cylinder tube is provided with a resin tube at the front end and is provided in the interior of the cylinder tube and is selectively moved back and forth selectively to the front end In the reversible disposable vascular resin needle comprising a metal needle provided to be exposed to the outside through the resin tube and a piston having a channel moving path formed on one side of the metal needle to supply the injection liquid into the cylinder tube The cylinder tube is provided with a reduced thickness to extend integrally formed with the body portion integrally formed with the resin tube at the front end portion and the body portion has a flexibility and the end portion is a stretchable tube portion joined to the rear end of the piston Characterized in that comprises a.

Reversible disposable vascular resin needle according to another embodiment of the present invention, the cylinder tube is provided with a resin tube on one side and the inside of the injection liquid supplied from the rear side of the cylinder tube to be selectively moved before and after the front of the cylinder tube In the reversible disposable vascular resin needle comprising a piston integrally provided with a metal needle, which is formed to guide the side to the side and the one side of the tip is selectively exposed through a resin tube, the incision along the longitudinal direction of the cylinder tube The first and second slide zippers which are partially opened or closed by being selectively fitted to or separated from each other and provided along a portion thereof, and the piston has a cylindrical body provided with a metal needle and a tapered portion at one side thereof, and To be connected to one side while being connected to the incision piece located between the first and second slide zippers Exposed to the outside of the cylinder tube is characterized in that it comprises a zipper clip for pressing the outside of the first and second slide zipper portion to be fitted to each other.

The reversible disposable vascular needle according to the present invention is easy to operate because the metal needle can be moved backward and retracted by a simple operation of retracting the piston after being inserted into a blood vessel using a metal needle during the injection of blood or sap. Since the retraction operation is precisely performed, the ease of use can be increased. In addition, it can be expected to mass-produce mass production and reduce manufacturing cost due to its simple structure, and because it is disposed of in a state where metal needles are accommodated inside the cylinder tube, secondary infections such as AIDS, typhoid booth, syphilis, hepatitis infection due to carelessness of the operator Not only can it be prevented in advance, but the patient also has a useful effect of blocking infection by external bacteria during injection.

In particular, it is possible to stably maintain the inner airtightness of the cylinder tube, which can stably block leakage of injectable fluids such as blood or fluid to the outside or infiltration of pollutants from the outside, which is expected to improve reliability and safety and convenience of the product. do.

1 to 3 are a perspective view and a cross-sectional view showing a reversible disposable vascular resin needle according to a first embodiment of the present invention,

4 and 5 are cross-sectional views for explaining the operating state of the vascular resin needle according to the second embodiment of the present invention;

6 and 7 are cross-sectional views for explaining the operating state of the vascular resin needle according to the third embodiment of the present invention;

8 to 10 are a perspective view and a cross-sectional view showing a reversible disposable vascular resin needle according to a fourth embodiment of the present invention,

11 and 12 are cross-sectional views for explaining the operating state of the vascular resin needle according to the fifth embodiment of the present invention;

13 and 14 are cross-sectional views for explaining the operating state of the vascular resin needle according to the sixth embodiment of the present invention.

15 to 19 is a view showing a reversible disposable vascular resin needle according to a seventh embodiment of the present invention.

20 to 22 are a perspective view and a cross-sectional view showing a reversible disposable vascular resin needle according to an eighth embodiment of the present invention;

23 to 25 are a perspective view and a cross-sectional view showing a reversible disposable blood vessel needle according to a ninth embodiment of the present invention;

26 and 27 are cross-sectional views showing a reversible disposable vascular needle needle according to a tenth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings illustrating a reversible disposable vascular resin needle according to the present invention. First, it should be noted that like elements or parts in the drawings are denoted by the same reference numerals as much as possible. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted in order not to obscure the subject matter of the present invention.

1 is a perspective view showing a reversible disposable blood vessel needle according to a first embodiment of the present invention, Figure 2 shows a state in which the piston is moved to the forward position in the cylinder tube, Figure 3 is a piston in the cylinder tube 1 and 3 are enlarged views showing that the moving / fixing stop member is provided in the form of a gasket so as to be in close contact with the mating member to achieve watertightness. The detailed description is omitted since it is carried out by.

As shown therein, the vascular resin needle 1 according to the present invention is used in connection with a well-known infusion set (not shown) for injecting an injection solution such as blood or sap into a blood vessel, and the structure thereof is flexible and transparent. It is composed of a cylinder tube 10 made of material and a piston 20 inserted into the cylinder tube 10 so as to be movable forward and backward and selectively moved by an operator's operating force. The configuration is similar to that of the vascular resin needle previously filed by the applicant. However, in the present invention, the cylinder tube 10 has a body portion 12 in which the resin tube 11 is integrally formed at the front end thereof, and a flexible tube portion having flexibility by having a thickness of the thin film as compared with the body portion 12 ( 30), and by integrating and connecting the rear end of the expansion pipe part 30 to the rear end of the piston 20 integrally, the injection liquid (blood, fluid) leaks to the outside without having a separate sealing element or Its technical features make it possible to block the penetration of external pollutants.

The cylinder tube 10 is a member having a tube shape formed of a transparent or translucent and flexible material so that the inside thereof can be visually checked, and a resin tube 11 inserted into a blood vessel of a patient to inject a fluid or blood at one end portion thereof. ) Is an integrally extending body portion 12 and integrally extending and connected to the rear end portion of the body portion 12 and having a reduced thickness compared to the body portion 12, the flexible tube portion having flexibility 30). The cylinder tube 10 is a guide element for receiving the fluid or blood to be injected into the blood vessel of the patient through the resin tube 11, is made of a hollow cylindrical shape, preferably injection (sap, blood It is preferable to be molded of a transparent or semi-transparent material so that the injection situation of the) can be easily confirmed from the outside, and also molded of a soft material for ease of handling. On the other hand, the cylinder tube 10 in the present invention is characterized in that the body portion 12 has a thickness such that its shape is not easily deformed by an external force, the expansion tube portion 30 is the body portion 12 It is desirable to have a reduced thickness as compared to) so that it can be easily deformed by an external force so that it can be folded or unfolded during the forward or backward movement of the piston 20. Reference numeral 15 is provided to the rear end of the body portion 12 shows a joint connection portion connected to the front end of the expansion pipe portion (30). The cylinder tube 10 of such a configuration may be integrally manufactured by injection molding the body portion 12 and the flexible tube portion 30, or may be integrally formed after each injection molding separately.

The piston 20 is provided inside the cylinder tube 10 is an element that is selectively moved before and after the user's operating force. The piston 20 is a member having a hollow and cylindrical shape having a predetermined length as shown in the drawing, the rear end is provided in an open form, and a connection portion 25 is formed to be connected to the fluid line, and the opposite position is The front end portion is formed with a transfusion solution passage 22 that is a through-hole so that the fluid or blood flowing through the rear end flows to the cylinder tube 10 side. At this time, one or more of the sap movement path 22 may be formed. In addition, the piston 20 is provided with a metal needle 21 having a predetermined length toward the infusion passage 22, in which the metal needle 21 can be inserted into the resin pipe 11 It is provided.

On the other hand, the piston 20 is integrally protruded to form a joint connecting portion 23b, the rear end of the expansion pipe portion 30 is joined to the outer peripheral surface of the rear end. The piston 20 having such a configuration is provided with a portion of the tip of the metal needle 21 exposed to the outside of the resin tube 11 when the piston 20 is moved forward in the cylinder tube 10. In addition, the cylinder tube 10 and the piston 20 is further provided with a positioning element for maintaining the position stable when moving the front and rear of the piston 20, this positioning element is the cylinder tube 10 and the piston 20 may be formed by protruding each member having a projection shape on the inner circumferential surface of the cylinder tube 10 and the outer circumferential surface of the piston 20 so that they can be engaged with each other. The positioning element in the present invention is the body portion 12 of the cylinder tube 10 so that the piston 20 is moved forward so that the metal needle 21 does not retreat while protruding to the outside of the resin tube 11 It proposes that it is composed of a fixed stop member 13 of the projection form formed on one side of the inner surface and the moving stop member 23a formed on the outer surface of the piston 20 to be caught therein.

Briefly describing the use of the reversible disposable vascular resin needle according to an embodiment of the present invention configured as described above are as follows.

In an infusion set having a container for storing blood or fluid (hereinafter referred to as 'sap' for convenience), the piston (with the connecting portion 25 of the piston 20 connected to an infusion line having one end connected to the container) 20) moves forward in the cylinder tube 10 to the maximum position. Then, the metal needle 21 of the piston 20 is provided in a state that is completely inserted into the resin tube 11 of the cylinder tube 10 while the tip is approximately 1 ~ in the resin tube 11 It is located in the state of protruding 2mm.

Holding the cylinder tube 10 in such a state to find the blood vessel of the site to be injected and insert the metal needle 21, the blood in the blood vessel flows back along the metal needle 21 inside the cylinder tube 10 Since the medical staff can check whether the metal needle 21 has found the blood vessel correctly. At this time, if it is confirmed that the metal needle 21 has found the blood vessel correctly, the resin tube 11 of the cylinder tube 10 is also located in the blood vessel with the metal needle 21, so that the metal needle 21 By moving the piston 20 included in the cylinder tube 10 to the retracted position, a smooth scan is made.

On the other hand, if the blood vessels are not properly found at once, the piston 20 including the metal needle 21 is moved forward so that the tip end of the metal needle 21 is exposed in the resin pipe 11 for the same person. Repeated injections can be attempted. In addition, the cylinder tube 10 is provided in the expansion and contraction tube portion 30 made of a cylindrical film 31, the folding or unfolding deformation is made in conjunction with the forward or backward movement of the piston 20, the expansion and contraction tube portion 30 Since the rear end of the joint is connected to the rear end of the piston 20 to ensure airtightness, it is possible to block the outflow of the injection liquid and the penetration of pathogens from the outside.

4 and 5 are cross-sectional views for explaining the operating state of the vascular resin needle according to the second embodiment of the present invention. In the present embodiment, the blood vessel resin needle 1 has coating reinforcement layers 32a and 33a formed on the inner and outer surfaces of the stretchable tube part 30 to reinforce the thickness. Such coating reinforcement layers 32a and 33a are provided by applying synthetic resin to reinforce the thickness or by attaching a thin film substrate. The coating reinforcing layer (32a, 33a) of this configuration is the metal needle 21 punctures the expansion pipe portion 30 of the cylinder tube 10 when the piston 20 is twisted without maintaining a straight state during the forward or backward operation It is to prevent that. The

coating reinforcing layers

32a and 33a are simply applied to the inner and outer surfaces of the expansion and contraction pipe part 30 to increase the surface strength without inhibiting the flexibility of the expansion and contraction pipe part 30 itself.

6 and 7 are cross-sectional views for explaining the operating state of the vascular resin needle according to the third embodiment of the present invention. In the present embodiment, the vascular resin needle 1 has partial coating reinforcement layers 32b and 33b for reinforcing thickness on the inner and outer surfaces of the distal end of the elastic pipe part 30. These partial coating reinforcement layers 32b and 33b are provided by applying a synthetic resin to reinforce the thickness or by attaching a thin film substrate. Partially coated reinforcing layer (32b, 33b) of such a configuration is the expansion pipe portion 30 to prevent the perforation by the metal needle 21 in the position where the piston 20 located inside the cylinder tube 10 is moved backwards maximum The piston 20 moves forward or backward by increasing the strength by coating the synthetic resin only to the part including the tip portion of the metal needle 21, that is, the tip of the expansion pipe part 30, from the beginning of the). If the metal needle 21 does not maintain the straight state at the time is twisted to prevent the perforation of the expansion tube portion 30 of the cylinder tube (10). The partial coating reinforcement layers 32b and 33b, like the coating reinforcement layers 32a and 33a of the second embodiment described above, increase the surface strength without impairing the flexibility of the stretchable tube part 30 itself.

8 is a perspective view illustrating a reversible disposable vascular resin needle according to a fourth embodiment of the present invention, and FIGS. 9 and 10 are cross-sectional views illustrating an operation state of a piston in the vascular resin needle of FIG. 8. The vascular resin needle 1 according to the present embodiment is similar to the configuration of the above-described first embodiment. However, the expansion pipe portion 30 in the present embodiment is formed of a corrugated pipe film 31 'to have a smooth stretching operation.

11 and 12 are cross-sectional views for explaining the operating state of the vascular resin needle according to the fifth embodiment of the present invention. The vascular resin needle (1) according to the present embodiment is provided with a stretch pipe portion 30 is provided as a corrugated pipe film 31 ', the coating reinforcing layer on the inner and outer surfaces of the stretch pipe portion 30 as in the second embodiment ( 32a 'and 33a' are formed. The coating reinforcement layers 32a 'and 33a' are provided by applying synthetic resin to reinforce the thickness or by attaching a thin film substrate. The coating reinforcing layer (32a ', 33a') of such a configuration, when the piston 20 is twisted without maintaining a straight state during the forward or backward operation, the metal needle 21 is stretched tube portion 30 of the cylinder tube 10 It is to prevent the puncture. The coating reinforcement layers 32a 'and 33a' are simply applied to the inner and outer surfaces of the expansion and contraction pipe part 30 to increase the surface strength without inhibiting the flexibility of the expansion and contraction pipe part 30 itself.

13 and 14 are cross-sectional views for explaining an operation state of the vascular resin needle according to the sixth embodiment of the present invention. The vascular resin needle 1 according to the present embodiment, as shown in the fifth embodiment, is provided with the corrugated pipe part 30 as the corrugated pipe film 31 ′, similarly to the third embodiment. Partially coated reinforcement layers 32b 'and 33b' are formed on the inner and outer surfaces of a part of the tip) to reinforce thickness and rigidity. These partial coating reinforcement layers 32b 'and 33b' are provided by applying synthetic resin to reinforce the thickness or by attaching a thin film substrate. Partial coating reinforcing layer (32b ', 33b') of this configuration is the expansion pipe portion so that the perforation by the metal needle 21 is prevented at the position where the piston 20 located inside the cylinder tube 10 is moved backward The piston 20 is moved forward to increase the strength by coating the synthetic resin only to the part including the tip portion of the metal needle 21, that is, the tip of the expansion pipe portion 30, from the beginning of the 30 to 30 When the reverse operation does not maintain the straight state is twisted to prevent the metal needle 21 to puncture the expansion tube portion 30 of the cylinder tube (10). The partial coating reinforcement layers 32b 'and 33b', like the coating reinforcement layers 32a and 33a of the second embodiment, increase the surface strength without impairing the flexibility of the stretchable tube part 30 itself.

15 is a perspective view showing a reversible disposable vascular resin needle according to the seventh embodiment of the present invention, Figure 16 is an exploded perspective view showing a reversible disposable vascular resin needle according to the present invention, Figure 17 is a ″ AA ″ line of FIG. Is a cross-sectional view. 18 shows a state in which the piston 20 moves backward in the cylinder tube 10, and FIG. 19 shows a state in which the piston 20 moves forward in the cylinder tube 10. As shown therein, the reversible disposable vascular needle 1 of the present invention is used in connection with a well-known infusion set (not shown) for injecting blood or infusion into a blood vessel, and the structure thereof is made of a flexible and transparent material. The cylinder tube 10 and the piston 20 which is provided to be slidably movable in the cylinder tube 10 to be moved forward and backward selectively by a user's operating force and the cylinder tube 10 and the piston 20 ) Is composed of a front film cylindrical film 34 and a back film cylindrical film 35 which prevent infiltration of contaminants from outside, that is, pathogens while preventing leakage of fluid or blood.

The cylinder tube 10 is a member having a tube shape formed of a transparent or translucent and flexible material so that the inside thereof can be visually checked, and a resin tube 11 inserted into a blood vessel of a patient to inject a fluid or blood at one end portion thereof. ) Is provided integrally. That is, the cylinder tube 10 has a connecting portion 15 is formed to be connected to the fitting structure of the infusion line (not shown) of the infusion set on the rear end side of the body, through which the injection of fluid or blood is supplied It is an element injected into the blood vessel of the patient through the resin tube 11 provided on the tip side. The cylinder tube 10 is provided with a hollow cylindrical shape as shown in the figure, and is molded in a transparent or translucent material so that the injection state of the injection liquid can be easily visually confirmed from the outside. In addition, it is preferable to be molded of a soft material for ease of handling. Here, the resin tube 11 is an element for injecting an injection solution such as fluid and blood by being plugged into a blood vessel of a patient, and a metal needle 21a of the piston 20 to be described later is selectively inserted therein. . On the other hand, the cylinder tube 10 having the above configuration is similar to the conventional configuration. However, the present invention, as shown in the drawings, the cylinder tube 10 is cut in the longitudinal direction, and the first and second slide zippers are provided in the form of a flange on both sides around the cut portion so that the cut portion can be opened and closed. It has the characteristics which comprise the

part

13a, 13b. In this case, the first and

second slide zippers

13a and 13b are configured to open and close the inside of the cylinder tube 10 by the interfitting structure, which may be implemented by a known technique, and thus detailed description thereof will be omitted. .

The piston 20 is an element which is provided inside the cylinder tube 10 and is selectively moved before and after the user's operation force, and has a body 21 having a hollow cylindrical shape as shown in the drawing. Although not shown, the rear end of the body 21 is provided in an open form and configured to receive an injection liquid supplied through the connecting portion 15 of the cylinder tube 10. The tip portion is integrally provided with a taper portion 26 having an infusion passage 26b, and the injection liquid supplied through the infusion passage 26b can flow to the resin tube 11 side of the cylinder tube 10. Is provided. In addition, the piston 20 is integrally provided with a metal needle 21a having a predetermined length on the front end side of the tapered portion 26, wherein the metal needle 21a is attached to the resin tube 11 at this time. It is selectively inserted so that the tip portion thereof is exposed to the outside. The piston 20 of this configuration is similar to the conventional configuration. However, in the present invention, a gap is formed between the first and second

slide zipper portions

13a and 13b on the piston 20, and at the same time, both sides of the first and second

slide zipper portions

13a and 13b are formed. It has a feature that integrally provided with a zipper clip 28 to press to be in a bonded state.

The zipper clip 28 has a fitting groove 28a is formed in the center portion to press both sides while moving forward and backward along the first and second

slide zipper portions

13a and 13b, and the fitting groove 28a The first and

second slide zippers

13a and 13b are disposed so as to pass between the first and

second slide zippers

13a and 13b, and one end thereof is inward of the cylinder tube 10. The cutting piece 28b connected to the body 21 of the piston 20 provided in the integrally formed. The zipper clip 28 of this configuration is to move forward or backward along the cylinder tube 10, in this process the first and

second slide zippers

13a, 13b by the cutting piece (28b) As a result, the piston 20 located in the cylinder tube 10 can be interlocked, and the first and

second slide zippers

13a and 13b are moved by the shape of the zipper clip 28 during the movement. Since the cylinder tube 10 is pressed in the direction in close contact with each other, a gap is locally formed only in a portion where the cut piece 28b is located. On the other hand, the gap is blocked by the outflow of the injection liquid or the external pollution source by the front film cylindrical film 34 and the later film cylindrical film 35 to be described later.

In the piston 20 configured as described above, the zipper clip 28 is preferably formed by the handle 24 so that the operator can easily apply the operating force, the handle 24 is the size of the vascular resin guide It may be provided in various forms depending on the type.

The entire film cylindrical film 34 is a cylindrical film film made of a flexible material disposed in front of the cutting piece 28b of the zipper clip 28 so that one end thereof surrounds the outer peripheral surface of the front end of the piston 20. It is connected, and the other end is connected to the inner peripheral surface of the front end of the cylinder tube 10 to prevent the leakage of fluid or blood while preventing the penetration of pollutants from the outside.

The rear film cylindrical film 35 is connected so that one end surrounds the outer peripheral surface of the rear end of the piston 20 about the incision piece 28b, and the other end is connected to the inner peripheral surface of the rear end of the cylinder tube 10. It prevents the leakage of the injection liquid injected through the connecting portion 15 of the cylinder tube 10 and at the same time blocks the infiltration of pollutants from the outside.

The front film cylindrical film 34 and the back film cylindrical film 35 having such a configuration are folded or unfolded as shown in the drawing when the piston 20 moves forward or backward in the cylinder tube 10. Since it is configured to surround the outer circumferential surface of the piston 20 except for the cutting piece 28b of the zipper clip 28, an injection liquid such as fluid or blood injected through the connection part 15 of the cylinder tube 10 to the outside. Not only can leakage be prevented safely, but it can also prevent contamination from outside.

First, the handle 24 provided on the outside of the cylinder tube 10 is moved forward to the resin tube 11 side of the resin tube 11 while holding by the hand. Then, the zipper clip 28 having the handle 24 is interlocked to move forward toward the resin tube (11). At this time, the zipper clip 28 is integrally moved to the piston 20 connected to the cutting piece 28b disposed between the first and second

slide zipper portions

13a and 13b.

In the meantime, the zipper clip 28 is movable by cutting the cutting piece 28b between the first and

second slide zippers

13a and 13b in the process of moving forward along the cylinder tube 10. The end portions of the first and second

slide zipper portions

13a and 13b which are split into the cut pieces 28b are pressed by the shape of the zipper clip 28, resulting in a bonding state. Subsequently, when the metal needle 21a portion of the piston 20 is completely inserted into the resin tube 11 of the cylinder tube 10, the tip of the metal needle 21a is the resin tube. At about 11 to form a protruding state of about 1 ~ 2mm, in this state to hold the cylinder tube 10 by hand to find the blood vessels of the site to be injected and insert the metal needle 21, blood in the blood vessels Since it flows back along the metal needle 21 and flows into the cylinder tube 10, the medical staff can check whether the metal needle 21 accurately finds blood vessels.

At this time, if it is confirmed that the metal needle 21 has found the blood vessel correctly, the resin tube 11 of the cylinder tube 10 is also located in the blood vessel with the metal needle 21, so that the metal needle 21 A smooth injection is made by moving the piston 20 including the piston 20 to the retracted position in the cylinder tube 10. If the vessel is not properly found at one time, the piston 20 including the metal needle 21 is removed. Repetitive scans of the same person may be attempted in a state in which the tip portion of the metal needle 21 is moved forward to expose the resin tube 11.

On the other hand, the piston 20 is connected to the front film cylindrical film 34 and the rear film cylindrical film 35 on both ends of the cylinder tube 10 at both ends of the inner peripheral surface and the rear inner peripheral surface of the cylinder tube 10. Therefore, the piston 20 is provided in a sealed structure by the entire film cylindrical film 34 and the rear film cylindrical film 35 as a whole inside the cylinder tube 10 to prevent leakage of fluid or blood to the outside. As well as preventing the invasion of pathogens from the outside.

20 is a perspective view showing a reversible disposable vascular resin needle according to an eighth embodiment of the present invention, Figures 21 and 22 are cross-sectional views for explaining the operating state of the reversible disposable vascular resin needle shown in FIG. As shown here, the reversible disposable vascular needle 1 in this embodiment is similar to the structure of one embodiment mentioned above. Therefore, like reference numerals refer to like elements, and detailed descriptions thereof will be omitted. As shown therein, the main technical features of the present embodiment is that the piston 20 does not apply the previous film cylindrical film 34 and the after film cylindrical film 35 described above among the elements constituting the reversible disposable vascular needle. The packing film 27 is formed in the outer peripheral surface of the film. At this time, the packing film 27 is a sealing element integrally provided on the outer circumferential surface of the body 21 of the piston 20, and provided with a plurality of soft members having a predetermined thickness at one or the same interval, It is provided to be in close contact with the inner circumferential surface of the cylinder tube (10). The packing membrane 27 may be provided as one on the outer circumferential surface of the body 21 of the piston 20, but preferably a plurality of packing membranes 27 are provided at equal intervals on the front and rear sides of the cutting piece 28b. Through this, the injection liquid such as blood or sap injected through the connecting portion 15 of the cylinder tube 10 through the gap formed by the cut piece 28b is prevented from leaking to the outside and at the same time To prevent contamination from contaminants. On the other hand, the packing film 27 is preferably formed integrally by injection molding together with the body 21 of the piston 20, if the molding is difficult by injection molding, such as a synthetic resin material or rubber urethane material By using a material of the packing member (not shown) provided with a disc having a ring shape may be provided by fitting to the outer peripheral surface of the body 21 of the piston 20.

FIG. 23 is a perspective view illustrating a reversible disposable blood vessel needle according to a ninth embodiment of the present invention, and FIGS. 24 and 25 are cross-sectional views for describing an operating state of FIG. 23. As shown here, the reversible disposable vascular needle 1 in this embodiment is similar to the structure of one embodiment mentioned above. Therefore, like reference numerals refer to like elements, and detailed descriptions thereof will be omitted. As shown in the drawings, the main technical feature of the present embodiment is to wrap the outer membrane of the cylinder tube 10 of the elements constituting the reversible disposable vascular resin needle with a cover film 40 provided in a cylindrical shape made of a flexible material as a whole. The injection part such as blood or sap injected through the connection part 15 of the cylinder tube 10 is prevented from leaking to the outside through the gap formed by the cut piece 28b, and at the same time, it prevents the infiltration of pollutants from the outside. Done. The cover film 40 is made of a flexible material and is provided in a cylindrical shape with both ends open. In addition, the cover film 40 has an inner circumferential surface of one end thereof joined to a distal outer circumferential surface of the cylinder tube 10 to form a distal end joining portion 41, and an inner circumferential surface of the other end thereof is in contact with a rear end outer circumferential surface of the cylinder tube 10. Thus, the rear end junction 43 is formed. In addition, the cover film 40 is provided so that a part of the handle 24 may be exposed to the outside while the airtightness is maintained. The present invention cuts one end of the cover film 40 to expose the handle 24 to the outside, and then forms a clip joint 45 in which one side of the cut portion and the handle 24 are integrally bonded. To keep confidential.

The cover film 40 of the present invention configured as described above is provided with a length such that the handle 24 can move back and forth as shown in FIGS. 24 and 25, and the handle 24 as shown in FIG. 24. In the state where the maximum retreat), a part of the cover film located on the rear side of the handle 24 is folded to form the wrinkle portion 40 ', and as shown in FIG. 25, the handle 24 is maximized. In the advanced state, a portion of the cover film located on the front side of the handle 24 is folded to form the wrinkle part 40 '.

26 and 27 are cross-sectional views showing a reversible disposable blood vessel needle according to a tenth embodiment of the present invention. As shown in the drawing, the injection solution is injected into a blood vessel, and the cylinder tube 10 having the resin tube 11 is provided at the distal end, and the cylinder tube 10 is provided inside the cylinder tube 10 to selectively slide back and forth. The metal needle 21 provided to be exposed to the outside through the resin tube 11 and the channel path 22 formed on one side of the metal needle 21 to supply the injection liquid into the cylinder tube 10. In the reversible disposable vascular resin needle comprising a piston 20 having a, further comprising a film film cylinder 31 ″ bonded to the inner peripheral surface of the end of the cylinder tube 10 and the outer peripheral surface of one end of the piston 20, respectively. It is configured by.

Referring to FIG. 26 as an embodiment, the junction points p1 and p2 are formed at the outer circumferential surface of the piston 20 and the front and rear ends of the film film cylinder 31 ″, respectively, on the inner circumferential surface of the end of the cylinder tube 10. In this configuration, the reversible resin needle pulls out the piston 20 to the outside, and the film membrane cylinder 31 "is also exposed to the outside.

Referring to FIG. 27 as a modified embodiment, junction points p1 and p2 at which the front and rear ends of the film film cylinder 31 " are joined to the outer peripheral surface of the front end side of the piston 20 and the inner peripheral surface of the end of the cylinder tube 10 are formed. In this configuration, the reversible resin needle is positioned inside the cylinder tube 10 without being exposed to the outside even when the piston 20 is pulled out. On the other hand, reference numeral 23a indicates a movement stop member provided on the front end side of the piston, reference numeral 23a 'indicates a movement stop member provided on the rear end side of the piston, and reference numeral 13 indicates a fixed stop. It is absent. Reference numeral 23c denotes an element for selectively moving the moving

stop members

23a and 23a 'to position the piston in the cylinder tube.

Claims

A cylinder tube provided with a resin tube at the distal end by injecting the injection solution into the blood vessel, and a metal needle provided at the distal end of the cylinder tube to selectively slide back and forth and selectively exposed to the outside through the resin tube at the distal end; In the reversible disposable vascular resin needle comprising a piston formed on one side of the metal needle and provided with a channel moving path formed to supply the injection liquid into the cylinder tube,

The cylinder tube is provided with a reduced thickness to be formed integrally extending to the body portion integrally formed with the resin tube at the front end and the body portion is flexible and its end portion is connected to the joint connection portion protruding at the rear end of the piston. Reversible disposable vascular resin needles, characterized in that the rear end comprises a stretched pipe portion is provided with a cylindrical film or corrugated pipe film is formed in each of the inner and outer surfaces with a coating reinforcing layer.
2. The cylinder of claim 1, wherein the cylinder tube and the piston include a positioning element for generating a force by a locking operation, the positioning element being a state in which the metal needle protrudes out of the resin tube as the piston moves forward. Reversible disposable vascular resin needle comprising a fixed stop member of the projection form formed on the inner surface of the body portion of the cylinder tube so as not to retreat from and a moving stop member formed on the outer surface of the piston to be caught therein.
A cylinder tube provided with a resin tube on one side and optionally moved forward and rearward to be provided therein so that an infusion passage is formed to guide the injection liquid supplied from the rear side of the cylinder tube to the front side, and on one side of the cylinder tube. In the reversible disposable vascular resin needle comprising a piston integrally provided with a metal needle to selectively expose a portion of the tip,

First and second slide zippers which are provided along a portion cut along the longitudinal direction of the cylinder tube and are partially opened or closed by being selectively fitted or separated from each other;

The piston is connected to a cylindrical body provided with a metal needle and a tapered portion on one side and a cut piece located between the first and second slide zippers while being connected to one side of the body and exposed to the outside of the cylinder tube. A zipper clip for pressing the outside of the first and second slide zippers to be in a mutually fitted state; Reversible disposable vascular resin needles, characterized in that comprising a.
According to claim 3, The cylinder tube is provided with a connecting portion integrally inserted into the infusion set on the rear side, the leakage of fluid and blood on the outer peripheral surface of the distal end of the piston and the inner peripheral surface of the distal end of the cylinder tube around the incision piece Reversible disposable blood vessel, characterized in that the front film cylindrical membrane is connected to block the contamination from the outside while preventing, the rear film cylindrical membrane is connected to the outer peripheral surface of the rear end of the piston and the rear inner peripheral surface of the cylinder tube around the incision. Resin needle.
According to claim 3, The zipper clip, reversible disposable vascular resin needles, characterized in that the handle is additionally connected so that the operator can easily operate.
According to claim 3, The cylinder tube is provided with a connecting portion integrally inserted into the infusion set on the rear side, the piston is cut off the gap formed locally in the first and second slide zipper portion by the incision piece And a packing membrane made of a soft thin film member, which is a sealing element in close contact with the inner circumferential surface of the cylinder tube, to the outer circumferential surface of the body to prevent leakage of the injection liquid and penetration of external contaminants.
According to claim 5, The cylinder tube is provided with a cylindrical cover film made of a flexible material that is joined to the inner peripheral surface of both ends and the outer peripheral surface of the front end and the rear end, respectively, to surround the entire cylinder tube, the cover film is handled to keep the airtight to one side Reversible disposable blood vessel needle, characterized in that the exposed to the outside.
7. The reversible disposable blood vessel needle according to claim 6, wherein a plurality of packing membranes are provided at equal intervals before and after the cutting piece.
A cylinder tube provided with a resin tube at the front end and a metal needle provided inside the cylinder tube and selectively moved back and forth to be selectively exposed to the outside through the resin tube at the front end and formed on one side of the metal needle. In the reversible disposable vascular resin needle comprising a piston having a channel movement path formed to supply the injection liquid into the cylinder tube, further comprising a film membrane cylinder bonded to the inner peripheral surface of the end of the cylinder tube and the outer peripheral surface of the end of the piston respectively; Reversible disposable vascular resin needles comprising a.