KR970006090B1 - Hypodermic syringe - Google Patents

Abstract

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Description

Hypodermic syringe

1 is an exploded view of a hypodermic needle of the present invention.

2 is a partial cross-sectional view of a portion adjacent to a needle housing of a hypodermic syringe of the present invention.

3 is a cross-sectional view of the needle cap shown disassembled from the needle housing, needle and barrel of the hypodermic syringe of the present invention.

4 is a cross-sectional view showing a syringe plunger in a partially oppressed position within the syringe barrel of a hypodermic syringe of the present invention.

5 is a cross-sectional view showing the syringe plunger and the fully retracted needle in the fully suppressed position of the hypodermic syringe of the present invention.

6 is a cross-sectional view of another embodiment of a hypodermic syringe of the present invention.

* Explanation of symbols for main parts of the drawings

7: hypodermic syringe 9: needle

11: holder 13: lip

15: spring 17: shaft

21: spring housing 23: elastic finger

25: Hook 39: O-ring

43: needle cap 55: syringe barrel

59: plunger 61: plunger piston

65: burstable end 73: plunger sleeve

The present invention generally relates to hypodermic needles, and more particularly to hypodermic needles which are particularly suitable for quickly and effectively withdrawing sharp needles of serious hygiene concern.

There are currently several types of hypodermic needles in the art, which provide a protective cover and cap on a needle that can be injured. The needle found in a hypodermic syringe must be very sharp enough to pierce the patient's skin quickly and easily to provide medication under the skin layer. In addition, subcutaneous needles are generally very thin and rigid as can be observed, especially in low light conditions. Often, doctors and nurses poke themselves at risk before or after the patient's injection.

Stabbing itself before injection of the solution does not present most of the health risks since the needles to be used are generally sterile. Subcutaneous syringes also generally have a needle cap provided on the top of the needle to prevent dangerous penetration of the skin.

When a doctor or nurse exposes a needle by removing the needle cap, there is usually a slight risk of being injured by the needle. However, when the needle cap is put on the needle again, the finger can often be stabbed by some temporal error or by motor neurological error. The consequences of this type of accident are even more extreme.

Since the needle has already penetrated the skin of the patient, blood and body fluids, along with viruses or bacteria that can be found in the patient, can be transferred to the healthcare provider by one accidental puncture.

Over the last decade, more dangerous and deadly viruses, acquired immunodeficiency syndromes or AIDS viruses have been easily infected by this accidental sapwood accident. Since there is currently no known treatment for AIDS, caregivers with subcutaneous needles already used in patients need to be careful to prevent accidental puncture.

Many types of syringes have been developed in an effort to solve the problem and to facilitate the use of more conventional hypodermic needles.

Many instruments are described below:

Tee announced May 26, 1964. In U.S. Patent No. 3,134,380 to T. Armao, a hypodermic syringe with a shield that does not need to be removed prior to use of the needle and can be disposed with the needle itself is described. As the shield is removed and the needle is pushed out of the protective cap, a hole is provided near the end of the shield to allow the release of air. The cap is held in the extended position by the spring provided at the time of injection.

Tee announced June 24, 1975. a. TA Leeson, US Pat. No. 3,890,971, describes a safety syringe for single use that includes a plunger that can be locked by a blocking member and a slideable needle cap that can also be permanently locked to prevent reuse. Described.

Egg, published January 11, 1983. In US Patent No. 4,367,738 to R. Legendre, a prefilled syringe with spikes on the plunger rod is described to prevent the plunger from pants from the syringe barrel. Means for protecting the needle tip from accidental puncture are not described.

RN published November 22, 1983. RN Hall, in US Pat. No. 4,416,663, discloses a self-sterilizing needle with a capsule containing a sterile fluid with a penetrating end of a soft material that tends to be elastic memory for self sealing after actual penetration by the front end of the needle. This is described. The capsule is axially and slidably received on the front end of the needle with the penetrating for sterilization of the needle and the front exposed end of the needle slidingly penetrating one end of the capsule. The syringe is provided for axially advancing and positioning the capsule outward to its original position at rest. The exposed end of the needle is put back into the sterile capsule when the subcutaneous penetration force is removed.

Poetry published December 23, 1986. ratio. US Pat. No. 4,631,057 to CB Mitchell describes a needle coupled to a syringe barrel, where the movement from the retracted position where the protector does not block the needle to the extended position where the protector blocks the needle. In order to protect the body, a needle protector is provided.

Egg, published September 22, 1987. L. In US Pat. No. 4,695,274 to R. L. Fox, a secure needle attachment is described wherein the needle is initially and wholly surrounded by a protective jacket that is interlocked with the holder. If a needle is to be used, the interengagement is released and the jacket effectively overlaps on the holder, protecting the needle through the membrane on the end of the jacket relative to the working position.

Yen released October 27, 1987. M. In US Patent No. 4,702,793 to NM Milirad, a subcutaneous injection with protective sleeves covering the needles such that the sleeves can be positioned towards the body portion where the injection takes place and extending from a holder having a needle tip end near the body Needles are described. By sliding the roller towards the body, the stopper restraint that holds the sleeve in the extended position is eliminated, whereby a relative retraction movement is performed.

Jay, released March 15, 1988. this. In US Patent No. 4,731,068 to J. E. Hesse, a non-refillable syringe is described, in which the plunger is pulled out to fill the syringe and advanced forward to withdraw the contents of the syringe. However, means are provided for inhibiting continuous retraction of the plunger assembly to prevent further filling and use of the syringe.

Jay, released April 5, 1988. J. Hagen, US Pat. No. 4,735,68, describes a protective enclosure for hypodermic syringe needles formed by a tubular sleeve sized for frictional engagement on the body portion of a syringe. have. At the opposite end, the needle guard is positioned, and the pivotable arm acts to pass the needle through the central channel of the needle guard.

Blood published April 12, 1988. V. In US Pat. No. 4,737,144 to PVChoksi, sleeves and tubulars are provided on the body for sliding longitudinally from the retracted position exposing the needle and the extended position the sleeve extends protectively around the needle. A syringe system consisting of a body is described.

H, announced April 26, 1988. In US Patent No. 4,737,150 to H. Baeumle, a tube-cannula syringe is described, wherein the cannula is arranged to be separated or replaced longitudinally of the syringe relative to the second cannula.

David Lee, published April 19, 1988. US Patent No. 4,738,663 to David E. Bogan describes a sleeve guide having a pair of fasteners having cavities fixed on a flange positioned in a hypodermic syringe so as to be grasped by a user's finger. In the retracted position, the guide prevents accidental puncture by the needle.

Michael B., published May 10, 1988. In US Patent No. 4,734,233 to Michael B. Schneider, a syringe, which can be connected at a first position extending over a hypodermic needle and reconnected at a second position along the syringe barrel to expose a needle for use A slidable sleeve on the body is described.

US Patent No. 4,747,829 to J. Jacob, published May 31, 1988, describes a prefilled syringe with a retractable needle. The body of the syringe may retract in the casing from the remote pre-injection position to the anterior injection position and return back to the position. The torso moves forward, allowing the needle to pass through the opening in the cap prior to injection.

U.S. Patent No. 4,747,830, published on May 31, 1988, issued by W. Wow Gloyer, et al., Contains an injection piston carried by a plunger member that retracts the needle in the body by extruding the piston. A syringe with a hollow body formed at the distal end is described.

J. J., released June 21, 1988. U.S. Patent No. 4,752,290 to J.J. Schramm describes tubular shields adapted to protect users from injury. The tubular shield cooperates with the raised surface on the body of the medical device to be protected.

T on July 5, 1988. a. In U.S. Patent No. 4,755,170 to Golden, T. A. Golden, a protective seal is made of a block that can hold the sharp end of a needle to prevent accidental puncture. Also described are cases that can be retracted on a needle to prevent accidental puncture.

Rain, published September 20, 1988. city. US Patent No. 4,772,272 to B. C. McFarland describes a protective sleeve for a hypodermic needle that can be completely disassembled from a hypodermic syringe. The protective sleeve moves to the needle injection position alone by the axial movement of the protective sleeve on the needle protective position.

It is desirable to be able to make subcutaneous needles that can be used in safe conditions prior to injection so that the caregiver does not accidentally poke his finger and requires a new sterile needle prior to the patient's injection. In addition, after injection with a hypodermic needle, in a healthcare facility or in transport or arrival at a waste collection area or a dump, the needle may be removed without indicative of a continuous health risk for all persons who may encounter the hypodermic needle. It needs to be safe and easy to remove.

The healthcare industry is of considerable interest for the manufacture, sale, distribution and use of hypodermic needles that provide a form of safety as described above. It is easy to operate with one hand, is provided to be completely unstable, can be easily and cheaply manufactured, and still has many variations in diameter and length for many applications using multiple needles.

The above features are provided by the present invention as preferred above for a hypodermic syringe.

The invention is embodied in an applied hypodermic syringe system which is completely safe prior to injection due to the protective cover end. In addition, the subcutaneous syringe system is completely safe as the caregiver can shrink the needle into a separate container that can be easily and safely taken out using one hand to prevent infection or injury of any dangerous virus or bacteria. In addition, the hypodermic syringe system is easily manufactured, easy to use, and provides visual and singing confirmation that the needle has safely retracted after injection.

More specifically, the hypodermic injection system includes a cylindrical syringe housing having a retractable needle that can be safely, quickly and easily retracted in a specially designed syringe plunger. In addition, the plunger is held firmly in a specially designed syringe barrel. The syringe barrel, plunger and needle assembly can be easily withdrawn without the risks associated with exposed needles or needles that can be easily de-gap.

In a more detailed description of the invention, the needle has a sharp end, a shaft with an axial passageway and a holder defining a raised lip. The needle is installed in a cylindrical spring housing having an elastic finger that extends radially outwardly at the first end and an extension tab that extends radially outwardly from the outer surface of the cylindrical spring housing so as to engage the cylindrical spring housing with the syringe barrel. Provide a mechanism. The cylindrical spring housing includes a first sealing means to provide a seal between the cylindrical spring housing and the holder of the hypodermic needle. In addition, a second sealing means is used for sealing between the cylindrical spring housing and the syringe barrel. The cylindrical spring housing comprises a first sealing means to provide a seal between the cylindrical spring housing and the holder of the hypodermic needle. In addition, a second sealing means is used for sealing between the cylindrical spring housing and the syringe barrel. The opening during the second end of the cylindrical spring housing is such that both the shaft and the holder of the needle forward in the cylindrical spring housing while retaining the holder when both the shaft and the holder of the needle are positioned forward in the cylindrical spring housing. When positioned, the holder is sized to accommodate the shaft of the injection barrel while holding the holder. The elastic finger of the spring housing has a radially inwardly hook that is sized to engage and retain the raised lip of the holder of the injection barrel when the shaft of the needle is positioned forward in the cylindrical spring housing. The hook has an inclined shovel and an inclined shoulder positioned outwardly of the syringe plunger so that it is easily deployed by replenishment.

A spring wound in the cylindrical spring housing between the holder and the second end of the cylindrical spring housing is located axially. The spring imposes an inflation force between the holder of the needle and the second end of the cylindrical spring housing, which is less than the holding force imposed by the hook of the elastic finger, so that the needle is held in the cylindrical spring housing against the expansion force of the spring.

The syringe barrel includes slots and grooves that are sized and positioned to receive an extension tab of the cylindrical spring housing and a second sealing means, and provide a hermetic seal between the exterior of the cylindrical spring housing and the interior of the body. The interior of the body has a shape sufficient to engage the cylindrical spring housing and cause the elastic legs to bend outward radially.

The syringe plunger is sized to be received within the syringe barrel and has a hollow chamber located axially therein. The syringe plunger has a brittle end with a shoulder outwardly inclined to the chamber. The brittle end is detached from the syringe plunger when the inclined shoulder is forced outwardly into the inclined shoulder of the resilient finger hump, injected from the syringe plunger, and injected into the chamber so that the resilient finger is deployed outward and the holder of the needle is raised. The hook is released from the made lip. A brittle end separates under a predetermined normal force between the holder of the needle and the brittle end. This causes the wound spring to move the syringe needle from the cylindrical spring housing into the chamber in the plunger.

The chamber located within the syringe plunger also moves the surrounding fluid into the chamber and away from the cylindrical spring housing when the brittle end is broken and the needle is moved into the chamber.

In addition, the in-direct lip on the outside of the plunger is positioned so as to engage the replenishment slot within the interior of the syringe body when the plunger is in a sufficiently lowered position to lock the plunger within the syringe body, Removal and access to the plunger is prevented.

The holder of the needle has a bright color (eg red) to be visually distinguished within the transparent syringe barrel and syringe plunger so that the caregiver can easily determine that the syringe is in safe conditions for transportation and disposal. In addition, the exterior of the syringe barrel may be secured with a color-coded sizing ring, thereby quickly and clearly confirming the size or capacity of the syringe system.

In alternative implementations, the needle retraction mechanism may be maintained at the distal end of the syringe plunger. In that configuration, the needle is held by a brittle needle holder associated with the retracted end of the syringe barrel. The hypodermic needle has a head that is easily gripped by the modified end of the syringe plunger. The lowering to the syringe plunger separates the needle from the brittle vane holder. The needle retractor is passed by engagement of the stopper with further lowering to the syringe plunger, while the similarly wound spring retracts the needle retractor engaged with the needle, thereby retracting the needle into the inner chamber of the syringe plunger.

The hypodermic syringe system of the present invention is provided with a retractable needle that is durable, easy to dispose, easy to manufacture, and prevents accidental puncture after use, and further processing of the subcutaneous needle after use, including subsequent disposal of the instrument. Great ease is provided. Subcutaneous injection bands are very simple in structure, fully effective in injecting fluids under the skin, and are completely safe after injecting fluids, and the caregiver needs only one hand to retract the needle. Free the rest of his hand. In addition, the caregiver's finger may be held in a position associated therewith to retract the needle.

Other aspects and advantages of the present invention will become apparent from the following description of the preferred embodiments considered in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the subject matter herein.

In Figures 1 to 6, the same parts are given the same numbers throughout, and the hypodermic syringe 7 is shown in detail in Figure 1 in an exploded state. The main part of the syringe 7 is a standard needle 9, with a specially mounted holder 11 behind it, which includes an enlarged lip 13. The coiled spring 15 spans the shaft 17 of the needle 9 penetrating the coiled passage 19 in the axial direction. The cylindrical spring ring 21 is formed with a plurality of radially elastic fingers 23, which are hooks 25 which are spaced apart so as to be engaged inwardly with the rear end 27 of the spring housing 21. ) Is included. The sealing means or washer 29 is sized to enter the interior space 31 of the spring housing 21.

The needle 9 comprising the enlarged lip 13 of the holder 11 can be located forward in the interior space 31 of the cylindrical spring housing 21. The cross opening 33 of the forward end 35 of the spring housing 21 allows the shaft 17 of the needle 9 to extend through the cross opening 33. The enlarged lip 13 is engaged by the hook 25 when positioned in the spring housing 21 in the forward direction so that the elastic finger 23 and the hook 25 are bent around the enlarged lip 13. To the top surface 37 of the lip 13.

The washer 29 provides a secure seal between the shaft 17 of the needle 9 and the inner space of the spring housing 21. Finally, the gasket or O-ring 39 engages the circular groove 41 located in the middle between the rear end 27 of the spring housing 21 and the front end 35 of the spring housing 21. . This configuration is clearly shown in FIG. 2 and in FIG. 3 partially disassembled from other components of the hypodermic syringe of the present invention.

Also shown in FIG. 3 is a needle cap 43, which engages a second circular groove 45 located in front of the spring housing 21. The spring housing 21 has radially extended bayonet tabs 47, which are inserted slots 49 and insert grooves 51 located in the tapered nose 53 of the syringe barrel 55. It provides a locking engagement between them. The engagement between the spring housing 21 and the tapered nose 53 of the syringe barrel 55 aligns the insert tab 47 with the insert slot 49 and opens the spring housing 21 through the insert slot 49. It can be easily done by pushing the insert tab 47 and rotating it within the insert groove 51 to provide a locking engagement therebetween. The insertable tab 47 may have an edge portion (not shown) that is inclined on the opposite side, and the insert groove has an elevated surface (not shown) so that the inclined edge portion is in one direction of rotation by the raised surface. To be passed through. This allows the spring housing 21 to be effectively locked to the tapered nose 53 of the syringe barrel 55 in a racket manner.

The first tapered inner wall 57 in the tapered nose 53 of the syringe barrel 55 has an O-ring 39 in close contact between the spring housing 21 and the first tapered inner wall 57. As it is fixed, it provides a seal between the spring housing 21 and the syringe barrel 55.

The plunger 59 is sized to fit within the syringe barrel 55 and incorporates a conventional type of plunger piston 61 widely used with syringe systems known in the art, with the cylindrical space 71 being a plunger. It extends through 59 to allow the breakable end 65 to enter the cylindrical space 71 of the plunger piston 61. The plunger piston 61 is located on the rupturable end 65 which is coupled and is supported by a rim 67. The length of the plunger piston 61 is such that the outwardly tapered shoulder 68 can extend through or over the path 63 of the plunger piston 61 to engage the frangible end 65. It is enough. Between the shoulder 68 tapering outwardly and the burstable end 65 is provided a circular groove 69, defined to be approximately 1/32 inch thick, so that the burstable end 65 is preferably approximately Allows the tearable end 65 to disengage outwardly from the tapered shoulder 68 when a normal force of 2 pounds or less is applied. The circular groove 69 may of course also be of a thinner configuration made of a material having a bursting property.

The plunger 59 includes a cylindrical central space 71 formed axially through the plunger 59 and adjacent to the breakable end 65. The cylindrical space 71 must be circular and of sufficient diameter so that the enlarged lip 13 and holder 11 and the shaft 17 of the needle 9 coupled thereto can be injected into the cylindrical space 71. There is no need to do it. In addition, the cylindrical space 71 can be evacuated so as to have a vacuuming effect when the breakable end 65 is separated from the tapered shoulder 68 outwardly.

The plunger sleeve 73 defines a cylindrical space 71, and the reinforcing ribs 75 provide support for the plunger sleeve 73 and are engaged with the rim 67 when the plunger 59 is suppressed. Will provide additional support. A pushing plate 77 is located at the rear end 82 of the plunger 59. The pushing plate 77 is formed to be large enough to press with the thumb of a common person when engaged with the syringe barrel 55.

In addition, the lip 79 on which the finger is placed may be used to allow the thumb to press the pushing plate 77 while the thumb and middle finger gripping the finger-holding lip 79 of the syringe barrel 55. It is coupled with the rear end 81. A groove 83 or knurling is etched within the lip 79 where the finger is placed, or on the pushing plate 77, so that the fingers, the thumb and the lip 79 are placed. A greater coefficient of friction is provided between the pushing plates 77 respectively.

The radially extending ratt teeth 85 obstruct the reinforcing ribs 75 and are located at the rear, while being extended rearward so that the ratchet teeth 85 have an inner wall 89 of the syringe barrel 55. The expansion ratchet lip 88 is defined to pass by. When the syringe plunger 59 is fully pressurized into the syringe barrel 55, the ratchet 85 passes through the ratchet lip 88. The ratchet teeth 85 elastically pass the ratchet lip 88 to prevent the plunger 59 from exiting the syringe barrel 55.

In operation, the syringe 7 of the present invention functions very similarly to the hypodermic syringes known in the prior art. However, after injection of the material to be injected, the hypodermic syringe 7 of the present invention allows the breakable end 65 to be released from the tapered shoulder 68 outward of the plunger 59 and the resilient fingers 23. By allowing radial bending of the hook 25, the hook 25 disengages the enlarged lip 13 of the holder 11 of the needle 9.

Since the circular space 91 exists between the elastic pincers 23 and the inner wall 93 of the syringe barrel 55, the elastic finger 23 can be bent to disengage the holder 11. The elastic finger bends only when the tapered surface 95 inwardly at the hook 25 is engaged by the tapered shoulder 68 outwardly at the plunger 59. Such engagement can only occur when the plunger 59 is pushed through the syringe barrel 55 and the rupturable end 65 is against the top surface 37 of the holder 11. When a normal force of 2 pounds or less is applied between the top surface 37 of the holder 11 and the burstable end 65, the burstable end 65 is tapered toward the outside of the plunger 59. 68).

When the hook is released from the holder 11 by the radially curved elastic finger 23, the compressed spring 15 exerts a force of ejection against the enlarged lip 13 of the holder 11, thereby holding the holder 11. The needle 9 is pushed along 11 and the separated bursting end 65 is pushed into the cylindrical space 71 of the plunger 59.

The operation as described above can be very remarkably 'click' to call the caregiver's attention so that the device of the present invention can be safe.

Also, if the cylindrical space 71 is evacuated, all of the residual liquid is attracted into the cylindrical space 71 by the suction action. When the syringe plunger is further pushed into the barrel 55 of the syringe, the ratchet teeth 85 can be coupled to the ratchet lip 88 to prevent the plunger 59 from escaping from the syringe barrel 55.

The holder 11 may be a bright red or fluorescent color, and the plunger 59 and the barrel body 55 of the syringe may be made of a transparent or translucent material to easily distinguish the retracted position even under low light conditions. And the needle may be visually safe for further manipulation, transport or disposal.

In addition, the interchangeable identification ring 101 may be located around the syringe barrel 55 to identify the hypodermic syringe 7 for any purpose.

The plunger 59, syringe barrel 55, holder 11, spring housing 21 and needle cap 43 may be made of a transparent or translucent plastic material. However, the spring housing 21 need not necessarily be transparent, and the holder 11 is also the same. Such materials and their manufacturers are well known in the art and will be further described herein. The plunger piston 61 may be formed of a neoprene material sufficient to provide a seal between the plunger piston 61 and the syringe barrel 55, which is also well known in the art and will not be further described below. do. The shaft 17 of the needle 9 is also a material known in the art.

O-ring 39 may be made of an elastomeric material such that washer 29 is made of a resilient material to provide a suitable sealing effect that is well known in the art. It should be noted that the spring housing 21 should be formed of a durable plastic material with elasticity, such that the elastic finger 23 can be extended appropriately radially outward in engagement with the syringe plunger 59. The syringe plunger should be made of a more resilient and rupturable material, or have a suitable thickness so that the rupturable end 65 will not bend inward when detached from the plunger 59. It is important that the plunger 59 must maintain sufficient durability to allow the tapered surface 95 to move more easily outwards of the hook 25. Specific examples of this type of plastic and their thicknesses are not necessarily required because they can be readily determined by one of ordinary skill in the art of plastics engineering.

In another embodiment, the mechanism for discharging the needle 9 must be entirely within the syringe plunger 59. As shown in FIG. 6, although not the same as described in the first embodiment of the present invention, some structural modifications may be made to achieve similar results.

The needle 9 is housed in the burstable needle holder 105, which includes a burstable cone 107 that is coupled to the enlarged portion 109 of the needle 9. The needle 9 has a sufficient length to easily extend within the syringe barrel 59 and can be coupled by an outlet hook 113 of a design similar to that shown in FIGS. Discharge end 111 is provided.

The needle contraction housing 115 is located and received at the inner end 117 of the syringe plunger 59, in particular a detent defined by the inner wall 119 of the cylindrical space 71 of the plunger 59 ( 117) is held in place. The compressed spring 117 exerts a force between the needle contraction housing 115 and the inner end 116 of the plunger 59. The force exerted by the spring is insufficient to force the needle contraction housing 115 to pass through the stopper 117.

In operation, the plunger 59 is pushed outward into the tapered shoulder 121 so that the rupturable cone 107 is destroyed, causing the enlarged region 109 of the needle 9 to protrude. do. When the pressure is pushed further down against the plunger 59, since the needle contractor housing 115 is moved deep into the cylindrical space 71 of the plunger 59, the daughter hook 110 tightens the discharge end 111. The needle systolic housing 115 passes over the stopper 117 so that the spring 15 is expanded, the needle systolic housing 115 is pushed deep into the cylindrical space 71 and with the needle 9. . Note that since the needle 9 extends within the syringe barrel 55, other piston spacers 123 are required for proper operation.

In addition to the above differences, the second embodiment of the present invention serves substantially the same function as the first embodiment, and the materials required for the components are similar to those described in the first embodiment of the present invention. .

As described above, the present invention discloses an improved subcutaneous needle with a retractable needle whose structure is simple but once the needle has completed the purpose of injecting the injection solution below the skin surface, it is extremely effective to retract the needle. It is. The hypodermic syringes of the present invention can be conveniently assembled with a minimum number of individual components, all of which are configured to promote compact and effective operation. The hypodermic syringes of the present invention can be fully and safely manual by using one hand to retract the needle and safely manipulate, transport and dispose of it.

Although the present invention has been described in detail with reference to only the preferred embodiments thereof, those skilled in the art will recognize that various modifications can be made within the scope of the present invention. Accordingly, the invention is not limited except as by the claims.

Claims (16)

(a) a syringe barrel; (b) a syringe plunger having a burstable end that seals the interior cavity (the syringe plunger is sized to be received within and slip through the syringe barrel); (c) needles; And (d) retaining the needle, selectively retracting the needle into the inner cavity of the syringe plunger when the syringe plunger is adjacent to and moving past a portion of the syringe body, and breaks the rupturable end. A spring holding means connected to and retained by the syringe barrel, the spring holding means comprising: a holder for holding the needle; and the holder and the A spring means for imposing an expansion force between the spring holding means, wherein the spring holding means selectively retains the holder and the spring means between the means, Extends through, the holder has a lip and the spring holding The stage has an extended elastic finger with hooks located inside and below to retain the lip of the holder in assembly condition, wherein the burstable end of the syringe plunger is engaged and replenished adjacent to the hook of the extended elastic finger. Having a surface, wherein the syringe plunger radially deploys the extended finger outwards as it moves past the portion of the syringe barrel to release the lip with respect to the expansion force of the spring means). . 2. The hypodermic syringe system of claim 1 wherein the burstable end of the syringe plunger is separated when a predetermined normal force is imposed between the burstable end of the syringe plunger and the holder. 3. The method of claim 2, wherein the disruptive end of the syringe plunger radially extends the elongated resilient finger upon lowering of the syringe plunger past the predetermined point within the syringe barrel prior to the imposition of the predetermined normal force. Retransmitted outwardly, said breakable end is separated and said spring means move said holder and needle into an internal cavity of said syringe plunger. 4. The hypodermic syringe system according to claim 3, wherein the spring holding means is effectively separated from the atypical portion of the syringe barrel. 5. The hypodermic syringe system of claim 4 wherein the inner cavity of the syringe plunger is emptied prior to separation of the disruptive end from the syringe plunger. 6. The apparatus of claim 5 further comprising toothed means for engaging the syringe plunger with the syringe body to prevent the syringe plunger from being separated from the syringe body after the syringe plunger is lowered in the syringe body. A hypodermic syringe system characterized by the above. 7. The apparatus of claim 6, wherein the spring holding means comprises one or more extension tabs, wherein the at least one recessed portion of the syringe barrel includes one or more axial slots and adjacent slots and internal radial slots, all of which are formed in the tab. Having a size that is receptive, by positioning the tab through the axial slot and rotating the tab within the radial slot, thereby securing the engagement between the spring holding means when connected to the non-shaped portion, A hypodermic syringe system, characterized in that a holding means is fixed to the shaping means. 8. The needle housing of claim 7, wherein the needle housing is of sufficient size to engage a truncated conical head, an axial bore having a diameter sufficient to receive the needle through the head, and an inclined inner wall of the atypical portion of the syringe barrel. A cylindrical outer groove sized to receive and retain the ring and to provide a sealing engagement between the spring housing and the non-shaped portion. 9. The holder of claim 8 wherein the holder has a very visible color and the syringe plunger and the syringe are made of translucent or transparent material so that the holder can be observed when being pushed into the syringe plunger through the syringe barrel. Subcutaneous syringe system, characterized in that. 10. The hypodermic syringe system according to claim 9, wherein said head of said spring holding means comprises an engaging groove for engaging said needle cap. 11. The hypodermic syringe system of claim 10, comprising a color-coded ring of sufficient diameter to slide over and retain the outer surface of the syringe barrel. A spring-loaded needle means for holding and pushing a held needle, a trunk means having an injectable fluid and capable of being connected to the spring-loaded needle means at one end and a hollow positioned within and moving through the body means A hypodermic syringe consisting of plunger means, the plunger means having a breakable end for pushing a needle separated from one end of the hollow plunger means into the hollow plunger means in the trunk means, wherein the spring load The needle means has, at one end, a housing with an elastic finger that can be radially outwardly developed thereby upon contact with the one end of the hollow plunger means to retract the held needle from the housing, The destructive end of the plunger means is broken and the glue Pushes the held needle out of the housing and into the hollow plunger means to hold it therein, wherein the destructive means of the hollow plunger means comprises an inclined inclined shoulder and a supplementary shoulder of the resilient finger that is effectively engaged and the hollow plunger Forward movement of the means to radially deploy the elastic fingers outwardly, the syringe further comprising an extension tab and a receiving slot connected between the outside of the hollow plunger means and the inside of the hollow plunger means, the extension tab and And the slots are oriented to engage each other when aligned with each other in the trunk body means, securing the hollow plunger means in the body means, and the spring loaded needle means being configured to be effectively separated from the body means. 13. The subcutaneous method of claim 12, wherein the hollow plunger means and the trunk means are transparent and have a pronounced appearance so that the held needle is easily identified through the syringe plunger and the trunk means when pushed into the hollow plunger means. Syringe system. 14. The hypodermic syringe in accordance with claim 13, wherein said hollow plunger means comprises an empty chamber for extracting fluid from said spring loaded needle means upon separation of said destructive end of said hollow plunger means. (a) a needle having a shaft with an axial passage, the shaft having a holder defining a raised lip at a sharp end and another end; (b) a cylindrical spring housing having an outer surface, an elastic leg that can be radially deployed outwardly at a first end, said cylindrical spring housing having an externally located attachment tab extending radially outwardly, said cylindrical spring housing First sealing means for providing a seal between the shaft of the needle and the needle (the cylindrical spring housing has a second sealing means for providing a seal between the inside of the cylindrical housing and the outside of the cylindrical spring housing). An opening on the second end of the cylindrical spring housing for holding the holder while receiving the shaft of the needle (the elastic leg is provided when the shaft of the needle is positioned forward in the cylindrical spring housing). Large enough to engage and retain the raised lip of the holder of the needle It is located radially inwardly with a hook having a (the hook has an inclined shoulder inwardly)); (c) wound spring means positioned axially within the cylindrical spring housing between the holder and the second end of the cylindrical spring housing, the spring means being the holder of the needle and the second spring of the cylindrical spring housing. Between the ends, imposes a repulsive force less than the holding force imposed by the hook of the resilient leg, such that the needle is held in the cylindrical spring housing against the repulsive force of the spring means; (d) body means for engaging and retaining said cylindrical housing, said body means receiving said extension tab of said cylindrical spring housing including a groove and a slot located within said body means and said cylindrical spring housing Has a second sealing means for providing an airtight seal between the outside of the cylindrical spring housing and the inside of the body means, wherein the inside of the body means has a shape sufficient to engage the cylindrical spring housing and is elastic Bending legs outward radially); And (e) a plunger sized to be intensively received in the body means, the plunger having a hollow chamber axially located therein, having a tearable end and a shoulder inclined outwardly adjacent to the tearable end. And wherein the burstable end is pushed into the chamber away from the plunger when forcing the outwardly inclined shoulder to the inwardly inclined shoulder of the hook of the resilient leg, thereby being pushed into the chamber. Developed outwardly and the hook from the raised lip of the needle is released, whereby the tearable end is separated by a predetermined normal force between the holder of the needle and the tearable end, and the wound Spring means for pushing the needle from the cylindrical spring housing into the chamber in the plunger) Configured subcutaneous injection system. (a) a syringe barrel having an attachment end; (b) a syringe plunger having a burstable end that slides an internal cavity (the syringe plunger is sized to be received within and slip through the syringe barrel); (c) needles; And (d) retaining the needle, retracting the needle into the inner cavity of the syringe plunger when the syringe plunger is adjacent to and moving past a portion of the syringe barrel, causing breakage of the disruptive end. A spring holding means comprising a spring, the spring holding means being connected to and held by the syringe body, the spring holding means being easily attached to and detachable from the body of the syringe plunger. Hypodermic Syringe System.