JP3195194U - Remote operation system - Google Patents

Abstract

The present invention provides an injection needle cylinder in which a used needle can be permanently displaced and stored in a tube body of the injection needle cylinder. A hollow tube body 21, a plunger set, and a needle set are provided. A first opening and a second opening are provided at both ends of the hollow tube body. The plunger set is disposed in the hollow tube body from the second opening. The plunger set has at least one plunger 220 and one first joint 222. The needle set includes a first needle base, a second needle base 232, and a needle 233. The first needle base is installed in the first opening. A second joint portion 237 is installed on the second base side of the second needle base. A positioning portion 230 is installed in the second joint portion, and when the second needle base is pulled back by pulling back the plunger and the needle is stored in the hollow tube body, the positioning portion and the first joint portion are arranged. Are pressed against each other, causing the needle to shift permanently. [Selection] Figure 5

Description

  The present invention relates to a syringe barrel, and in particular, by pulling back a used needle and shifting it, and permanently storing it in the hollow tube of the syringe barrel, the safety of the syringe needle is improved. The present invention relates to a syringe barrel to be improved.

  In general, a syringe needle tube includes a tube, a plunger, a needle base, a needle, and a lid. Among them, a piston may be installed at one end of the plunger, and the plunger can be arranged inside the tube through the second opening of the tube. The needle may be inserted and fixed to one side of the needle base, and the other side of the needle base may be fitted into the first opening of the tube body in a luer slip manner. Operations such as blood sampling and injection are achieved by operating the plunger to suck the liquid into the tube or push the liquid inside the tube to the outside. After the syringe barrel is used, the lid is directly fitted to the needle base to cover the needle.

  However, since the conventional injection needle cylinder covers the needle only with the lid, the medical staff cannot determine whether it is a used injection needle cylinder, or the lid is fitted to the needle base. When trying to do so, carelessness can lead to used needles that can lead to injuries that cannot be compensated.

  For this reason, the safety injection needle tube which can reduce the injury opportunity to a medical worker by pulling back and storing a used needle in the tube and not exposing the needle appears. However, the conventional safety injection needle tube can move freely to the needle tube even when the used needle is pulled back to the needle tube. Because it is easy to be pushed out to the outside, there is a risk of use and an influence on the external environment.

JP 2006-87636 A

  In view of the above problems, the main object of the present invention is to provide a syringe barrel that can be used by permanently shifting the used needle to the tube of the syringe barrel in order to solve the problems of the conventional safety syringe barrel. It is to provide.

  In order to achieve the above object, the injection needle cylinder of the present invention includes a hollow tube, a plunger set, and a needle set. A first opening and a second opening are provided at both ends of the hollow tube body, respectively. The plunger set is disposed in the hollow tube body from the second opening. The plunger set includes a plunger, a pressing portion, a first joint portion, and a piston. The pressing portion is installed at one end of the plunger, the first joint is protruded from the pressing portion, and the piston is installed outside the pressing portion, so that the first joint and the pressing portion are attached to the piston. Projected. The needle set includes a first needle base, a second needle base, and a needle. The first needle base set is installed in the first opening and has a hollow inner tube. The second needle base is installed inside the hollow inner tube. The first base side of the second needle base is for inserting and fixing the needle. A second joint portion is provided on the second base side of the second needle base. A positioning portion is installed in the second joint portion, the second joint portion and the first joint portion are fitted to each other, the second needle base is pulled back by pulling back the plunger, When housed in the hollow tube, the positioning portion and the first joining portion are pressed against each other to shift the needle.

  In one embodiment of the present invention, a plurality of elastic supports are installed on the inner peripheral cylindrical wall of the first opening of the hollow tube. Since the first needle base set is installed in the first opening, the second base side is held down by the elastic support, and the pressing portion pushes open each elastic support before the second joint. The first joint portion and the first joint portion are fitted to each other, and the second needle base is pulled back by pulling back the plunger, and the needle is stored in the tubular body.

  In one embodiment of the present invention, the first needle base has a first threaded portion, and the tubular body has a second threaded portion installed on the outer peripheral cylindrical wall of the first opening, The first screw portion and the second screw portion are screwed together.

  In order to achieve the above object, the present invention further provides a syringe barrel having a hollow tube, a plunger set, and a needle set. A first opening and a second opening are provided on both sides of the hollow tube. The plunger set is disposed on the tube body from the second opening. The plunger set includes a plunger, a first joint portion, and a piston. The first joint is installed at one end facing the second opening of the plunger. By installing the piston on the outer periphery of the first joint, the first joint projects from the piston. The needle set has a needle base and a needle. The first base side of the needle base is for inserting and fixing the needle. The second base side of the needle base is joined to the first opening. A second joint is provided on the second side. A positioning part is installed in the second joint part. The second joint and the first joint are fitted together. When the needle set is pulled back by pulling back the plunger and the needle is stored in the tubular body, the positioning portion and the first joint portion are pressed against each other to shift the needle.

  In one embodiment of the present invention, the first joint is a hollow bump, and the second joint is a concave groove.

  In one embodiment of the present invention, the syringe barrel has a lid. A lid locking body is installed on the edge of the lid body, a needle base locking body is installed on the outer edge of the needle base, and the lid locking body and the needle base locking body engage with each other.

  Based on what has been described above, the present invention solves the above-described problems and further has the following advantages in a certain embodiment.

1. By installing a plurality of elastic supports on the inner edge cylindrical wall of the first opening of the tube body, the second base side of the second needle base is pressed down, supporting force is provided to the needle, and injection Occasionally the needle is prevented from being pushed back, reducing pain from human injection.
2. By fitting the first joint portion of the plunger and the second joint portion of the second needle base, the second needle base is pulled back by pulling back the plunger, and the needle is housed in the tubular body. This prohibits re-use of the syringe needle and avoids indirect infection.
3. Each elastic support is pushed open by the pressing portion of the ranger, and each elastic support does not hold down the second base side of the second needle base, so that the second needle base and the needle are attached to the tube body. Easy to move.
4. Since the first joint portion may have a hollow structure, the first joint portion has good elasticity, so that the first joint portion and the second joint portion are easily fitted to each other.

1 is a structural exploded view of a first embodiment of a syringe barrel according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an assembly diagram of a syringe barrel of a first embodiment according to the present invention. It is a partial structure enlarged view of the injection needle cylinder of the 1st example concerning the present invention. It is a partial structure enlarged view of the injection needle cylinder of the 1st example concerning the present invention. It is a partial structure enlarged view of a syringe needle barrel concerning the present invention. It is a structure assembly drawing of another Example of the injection needle cylinder which concerns on this invention. It is a structure assembly drawing of another Example of the injection needle cylinder which concerns on this invention.

  In order to better understand the contents of the present invention, several specific embodiments of the present invention will be described in detail below with reference to the drawings. The same reference numerals represent members or devices having the same or similar functions.

  First, refer to FIG. As shown in FIG. 1, the injection needle cylinder 20 of the present invention includes a hollow tube body 21, a plunger set 22, and a needle set 23, but is not limited thereto. A first opening 211 and a second opening 212 are provided at both ends of the hollow tube body 21, respectively. A plurality of elastic supports 213 are installed on the inner edge cylindrical wall of the first opening. The plunger set 22 includes a plunger 220, a pressing part 221, and a first joint part 222. The pressing part 221 is installed at one end of the plunger 220 facing the second opening 212. The first joint portion 222 protrudes from the pressing portion 221, and the piston 223 is installed on the outer periphery of the pressing portion 221, whereby the first joint portion 222 and the pressing portion 221 protrude from the piston 223. . One end of the plunger set 22 where the piston 223 is installed can be arranged in the hollow tube body 21 through the second opening 212. The needle set 23 includes a first needle base 231, a second needle base 232, and a needle 233. The first needle base 231 has a hollow inner tube 234, and the second needle base 232 is installed inside the hollow inner tube 234. The first base side 236 of the second needle base 232 is for inserting and fixing the needle 233 (for example, fixing the needle 233 to the second needle base 232 with an adhesive). A second joint portion 237 is installed on the second base side 239 of the needle base 232. Among them, the first needle base 231 is installed in the first opening 211 of the hollow tube body 21, whereby the second base side 239 is held down by the elastic supports 213. After the pressing portions 211 push open each elastic support member 213, the second joint portion 237 and the first joint portion 222 are fitted to each other, and the second needle base 232 is pulled back by pulling back the plunger set 22. Then, the needle 233 is stored in the tube body 21.

  Therefore, when the needle set 23 is installed in the first opening 211 of the hollow tube body 21 and the pressing portion 221 has not pushed the elastic support members 213 yet, the second needle bases are formed by the elastic support members 213. By holding down the second base side 239 of the needle 233, support force is provided to the needle 233, thereby preventing the needle 233 from being pushed back when injecting with the syringe barrel 20, and reducing pain caused by injection of the human body. To do.

  After the injection, the plunger set 22 is continuously pushed to push open each elastic support 213 by the pressing portion 221, and then the first joint portion 222 and the second joint portion 237 are fitted. After the first joint portion 222 and the second joint portion 237 are fitted, the second joint portion 237 is interlocked with the first joint portion 222 by pulling the plunger set 22, and the second needle The base 232 is pulled back by pulling back the plunger set 22, and the needle 233 is accommodated in the hollow tube body 21. Thereby, the re-use of the needle 20 is prohibited, and indirect infection is avoided. Further, each elastic support is pushed open by the pressing portion 221, and each elastic support 213 does not hold down the second base side 239 of the second needle base 232, whereby the second needle base 232 and the needle 233. Can be moved to the hollow tube body 21. A fitting method between the first joint 222 and the second joint 237 will be described later.

  In the first embodiment, a concave groove is formed between the outer edge cylindrical wall of the first needle base 231 and the hollow inner tube 234. In addition, the inner peripheral cylindrical wall of the hollow tube body 21 forms a first opening 211. When assembling, the concave groove and the inner peripheral cylindrical wall of the hollow tube 21 forming the first opening 21 can be fitted, and the outer peripheral tube wall of the first needle base 231 is directly connected to the hollow tube. 21 can be brought into close contact with the outer peripheral cylindrical wall 210 of the first opening 211, thereby assembling the needle set 23 in close contact with the hollow tube 21.

  A tube locking body 215 may be installed on the inner peripheral cylindrical wall of the hollow tube body 21, and a plunger locking body 224 corresponding to the plunger locking body 215 is installed in the plunger set 22. The locking body 224 (for example, the bump and the engaging groove facing each other) engage with each other. That is, the tubular body locking body 215 is installed on the inner edge cylindrical wall on the second opening 212 side of the hollow tubular body 21, the plunger set 22 is pulled to retract the second needle base 232, and the needle 233 is hollow. After being accommodated in the tube body 21, the plunger set 22 is continuously pulled and retracted, and the plunger locking body 224 of the plunger set 22 is engaged with the tube body locking body 215, whereby the plunger set 22 is easily hollowed out. The second needle base 232 and the needle 233 taken out from the tube body 21 and housed in the hollow tube body 21 are taken out from the second opening 212, and the processing relationship between the user of the syringe barrel 20 or the syringe barrel 20. Avoid danger to the person.

  Reference is now made to FIG. As shown in FIG. 3, in one embodiment of the present invention, the first joint 222 is a bump and the second joint is a concave groove. A positioning part 230 is installed in the second joint part 237. When the first joint portion 222 and the second joint portion 237 are fitted, the positioning portion 230 and the first joint portion 222 are pressed against each other and the needle 233 is permanently biased by pulling back the plunger set 22. It is moved and stored in the hollow tube body 21. Thereby, when the needle 233 freely swings to the center position in the hollow tube body 21, it is exposed from the hollow tube body 21 again from the first opening (211 as shown in FIG. 1) by other external force, The use safety of the user of the syringe barrel 20 or the person involved in the processing is damaged, or the influence on the external environment is avoided. Among them, since the first joint 222 may have a hollow structure, the first joint 222 has good elasticity, so that the first joint 222 and the second joint 237 are fitted to each other. Easy to match. Details will be described as follows.

  Please refer to FIGS. 2 to 5 are an assembly drawing and a partial structure enlarged view, respectively, of the syringe needle of the first embodiment according to the present invention. 2 and 3, the schematic diagram after the parts of the syringe barrel 20 have been assembled can be understood. When the plunger set 22 is pulled back, the syringe barrel 20 uses the needle 233 to supply the liquid to the hollow tube body. 21 can be inhaled. Moreover, as shown in FIG. 4, when injecting with the injection needle cylinder 20, the liquid in the hollow tube body 21 can be pushed out by pushing the plunger 220. When the plunger 220 is continuously pushed in, the pressing portion 221 pushes and opens each elastic support member 213, thereby pressing the hollow structure of the first joint portion 222, and the first joint portion 222 is crushed and contracted. And the 1st junction part 222 is easily accommodated in the 2nd junction part 237, and it fits with the 2nd junction part 237 mutually. Next, as shown in FIG. 5, after the first joint 222 and the second joint 237 are fitted, the plunger 220 is pulled to pull the second joint at the first joint 222. The second needle base 232 is pulled back by pulling back the plunger 220, and the needle 233 is stored in the hollow tube body 21. At this time, the first joint portion 222 is not affected by the restriction of the external structure, and the first joint portion 222 is restored to the hollow structure by restoring the elasticity of the material itself. Accordingly, the first joint portion 222 pushes the positioning portion 230 in the second joint portion 237, shifts the needle 233 in the hollow tube body 21, and stores the needle 233 in the hollow tube body 21. This prevents the re-use of the syringe needle 20 and ensures the safety of the user or the person concerned with the processing.

  Further, FIG. 6 and FIG. 1 are referred to simultaneously. FIG. 6 is a structural assembly diagram of the second embodiment of the syringe barrel of the present invention, and the parts not described are the same as those of the first embodiment. In the second embodiment, the first needle base 231 has a first threaded portion 238 and the hollow tube body 21 has a second threaded portion 214. The second screw portion 214 is installed on the outer peripheral cylindrical wall of the first opening 211, and the first screw portion 238 and the second screw portion 214 are screwed together. As can be seen from the screwing method, the first needle base 231 is assembled to the hollow tube body 21 by the luer lock method, so that the first needle base 231 is completely hollow tube body 21. After being assembled and positioned, there will be no gap between each elastic support 213 and the second base side 239 of the second needle base 232. Due to the assembly method of the first needle base 231 and the hollow tube body 21 according to the present invention, when a human body is injected with the injection needle cylinder 20, each elastic support 213 is continuously connected to the second needle base 232. Pain due to injection of the human body can be reduced without pressing the base side 239 and thereby pushing back the second needle base 232 when the needle 233 is inserted into the human body.

  In addition, the assembly method of the first needle base 231 and the hollow tube body 21 in the second embodiment ensures the integrity of the syringe needle 20 without the syringe barrel 20 being loosened during the packaging and transport process. .

  The first needle base 231 can be easily removed from the hollow tube 21 to replace the assembled and damaged needle 233 in the syringe barrel 20, thereby allowing human injection with the damaged needle 233. To avoid the pain caused by human injection.

  Still referring to FIG. In one embodiment of the present invention, the injection needle cylinder 20 has a lid body 24, and a lid body locking body 241 is installed on the inner edge of the lid body 24, whereas the outer edge of the first needle base 231 is provided. Is provided with a needle base locking body 235, and the lid locking body 241 and the needle base locking body 235 (for example, face each other) so that the lid 24 can be fixed to the first needle base 231. The bumps and the engagement grooves) are engaged with each other to prevent the needle 233 from being exposed to the outside and causing danger.

  Of course, the lid 24 may be assembled to the first needle base 231 by a screwing method in order to increase the stability and sealing performance of the lid 24 in the first needle base 231, and the description thereof will be given here. Is omitted.

  The plunger 220 of the plunger set 22 may be provided with a cutting device 225 (for example, a V-shaped groove as shown in FIG. 2), and the cutting device 225 (as shown in FIG. 2) is located outside the hollow tube body 21. It has a function of cutting a part of the plunger set 22 exposed to. Therefore, after pulling the plunger set 22 and pulling back the second needle base 232, the needle 233 is accommodated in the hollow tube body 21, and then the cutting device 225 (as shown in FIG. 2) is placed outside the hollow tube body 21. The exposed part of the plunger set 22 is separated, and the remaining part of the plunger set 22 and the piston 223 are accommodated in the hollow tube 21 so as not to be taken out, thereby enhancing the sealing performance of the hollow tube body 21.

  The present invention is not limited to the above embodiment. Still referring to FIG. FIG. 7 shows another embodiment in which the outer edge tube wall of the first needle base 231 is in close contact with the outer edge tube wall 210 of the first opening 211 of the hollow tube body 21. For parts not described, refer to the first embodiment. The distinguishing features of this embodiment relative to the first embodiment are as follows. The space formed by the outer edge tube wall of the first needle base 231 of the injection needle cylinder 30 is the hollow inner tube 234, and the groove structure as shown in FIG. 1 is not formed. The first opening 211 is a space directly formed by the outer edge cylindrical wall 210 of the hollow tube body 21. When assembled (as shown in FIG. 7), the outer edge tube wall of the first needle base 231 is directly inserted into the first opening 211 formed by the outer edge tube wall 210 of the hollow tube body 21, Since the outer edge tube wall of the needle base 231 has a certain elastic force, the outer edge tube wall of the first needle base 231 can be in direct contact with the outer edge tube wall 210 of the hollow tube body 21. Therefore, the needle set 23 can be assembled in close contact with the hollow tube body 21.

  The foregoing is only a preferred embodiment of the present invention, and does not limit the scope of the present invention, that is, an equivalent based on the shape, structure, features, and gist described in the claims of this utility model registration. Any changes and modifications should be included in the scope of the utility model registration claim of the present invention.

20: Syringe 21: Hollow tube 22: Plunger set 23: Needle set 24: Lid 210: Outer cylinder wall 211: First opening 212: Second opening 213: Elastic support 214: Second Screw portion 215: Tube locking body 220: Plunger 221: Pressing portion 222: First joint portion 223: Piston 224: Plunger locking body 225: Cutting device 230: Positioning portion
231: first needle base 232: second needle base 233: needle 234: hollow inner tube 235: needle base locking body 236: first base side 237: second joint 238: first screw Part 239: second base side 241: lid locking body

Claims (5)

A hollow tube provided with a first opening and a second opening at both ends,
It is arrange | positioned at the said hollow tube body from the said 2nd opening, has a plunger, the press part installed in the end of a plunger, the 1st junction part protrudingly provided by a press part, and a piston And the plunger set by which a 1st joined part and a press part project from a piston by installing a piston in the perimeter of a press part,
A first needle base disposed in the first opening and having a hollow inner tube; a second needle base disposed in the hollow inner tube; and a needle; The base side of the second needle base is for inserting and fixing the needle, and the second base side of the second needle base is provided with a second joint portion provided with a positioning portion. When the joint portion and the first joint portion are fitted to each other, the second needle base is pulled back by pulling back the plunger, and when the needle is stored in the hollow tube body, the positioning portion and the first joint portion are A set of needles that are pressed against each other to permanently shift the needle;
A syringe barrel comprising:   A plurality of elastic supports are installed on the inner peripheral cylindrical wall of the first opening of the hollow tube body, and the first needle base set is installed in the first opening. After the base side of 2 is pressed by the elastic support, and the pressing portion pushes open each elastic support, the second joint and the first joint are fitted to each other, The injection needle cylinder according to claim 1, wherein the second needle base is pulled back by pulling back the plunger, and the needle is accommodated in the tube body.   The first needle base has a first threaded portion, and the tubular body has a second threaded portion that is installed on the outer peripheral cylindrical wall of the first opening, and the first threaded portion and the second threaded portion. The syringe needle according to claim 1, wherein the needle part is screwed together.   2. The syringe needle according to claim 1, wherein the first joint portion is a hollow-structured bump that is hermetically sealed, and the second joint portion is a concave groove. A hollow tube provided with a first opening and a second opening at both ends,
It is arrange | positioned at the said hollow tube body from the said 2nd opening, has a 1st junction part installed in the end which faces the said 2nd opening of a plunger, and a piston, A 1st By installing a piston on the outer periphery of the joint, a plunger set in which the first joint projects from the piston;
A first base side of the needle base for inserting and fixing the needle; a second base side of the needle base is joined to the first opening; A second joint portion provided with a positioning portion is provided on the side of the second side, the second joint portion and the first joint portion are fitted to each other, and the needle set is pulled back by pulling back the plunger. When the needle is stored in the tube body, the positioning portion and the first joint portion are pressed against each other, and a needle set for permanently shifting the needle,
A syringe barrel with

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