TWM466672U - Syringe - Google Patents

Description

syringe

This creation relates to a syringe, and more particularly to a syringe that ensures the safety of the needle and the vial.

The composition of the existing syringe mainly comprises a syringe body for loading a medicament bottle, the syringe body is provided with a needle at one end thereof, and the other end of the syringe body is provided with an injection propulsion assembly, and the syringe body has one end of the needle sleeve Unpack the cover and cover the needle cover. Before the injection, the medicine bottle should be prefilled into the syringe body, and the needle is inserted into the medicine bottle. At the time of injection, the cover is removed, the needle is inserted into the body to be injected, and the injection advancement assembly is successively pressed to apply the medicine. The liquid medicament in the bottle is injected into the body of the injected person.

However, in the composition of the existing syringe, the needle is a cover that is coupled to one end of the syringe body, because the sleeve and the syringe body are simply snapped together, because the needle is not in a completely sealed aseptic environment, and is susceptible to external force. The detachment causes the needle to be contaminated, which causes defects in the safety of the use of the syringe. In addition, when the syringe is filled with the medicament, bubbles are easily retained, and the bubbles are further squeezed out, and when the bubbles are squeezed, the medicine is easily connected. The dosage of the drug must be increased, so the difficulty of using the syringe is technically high, which is not conducive to the use of emergency injection.

Furthermore, in the composition of the existing syringe, the injection advances The assembly is only installed in the injection body, and there is no other safety protection mechanism. Therefore, the injection propulsion assembly is easily subjected to external force to inject the liquid medicine in the medicine bottle through the needle, which causes inconvenience in the use of the syringe.

The main purpose of this creation is to provide a syringe that solves the problem of failing to provide sterile safety protection for the needle and vial prior to use of the syringe.

In order to achieve the foregoing, the syringe proposed by the present invention comprises: a needle assembly comprising a hollow needle sheath, at least one needle and a membrane, and a needle positioning space formed in the needle sheath, the needle sheath being sheathed One end of the needle positioning space is provided with a soft plug to form a closed end, and the needle sheath forms a fitting opening at the other end of the needle positioning space, and the needle is placed in the needle positioning space, and the sealing film is fixed to the needle guard In the assembly opening, the needle is sealed in the needle sheath provided with the sealing film; a medicine kit comprising a hollow medicine bottle casing and a set of sleeve ends disposed at the side end of the medicine bottle casing a cover for accommodating at least one drug bottle, wherein the drug bottle corresponds to the needle; an injection advancement assembly comprising an outer sheath set and at least one injection pusher set, the outer sheath set being sleeved on the medicament set The outer side is provided with an injection push rod assembly, one end of the outer sheath set is assembled at the assembly opening of the needle sheath, the end of the sheath set away from the needle sheath has a safety card structure, and the injection pusher group comprises an injection Push And a compression spring, one end of the injection push rod passes through the sleeve end cover of the medicine sleeve and protrudes into the medicament bottle to abut the piston, and the other end of the injection push rod is sleeved with a compression spring and the end has a safety buckle. Pressure The two ends of the shrinking spring respectively abut the injection push rod and the outer sheath group, so that the compression spring can provide the elastic force of the injection push rod toward the medicine bottle, and the safety buckle structure of the outer sheath group can buckle the safety bullet of the injection push rod. And a safety sheath comprising a set of bodies and a safety insert formed in the sleeve and correspondingly injecting the number of push rods, the safety sheath being detachably sleeved at the end of the outer sheath set, such that The safety insert can be inserted into the safety buckle structure of the outer sheath group and the safety buckle of the injection push rod, and the injection push rod is buckled and fixed.

By pre-expanding the syringe, the needle is sealed in the needle sheath with the sealing film to isolate the needle from the outside, so it can be manufactured and packaged in a sterile environment, and the needle can be prevented from being exposed and contaminated. In the case, the medicine bottle is packaged in a medicine kit to provide good protection for the medicine bottle. After the needle assembly, the medicament kit containing the medicament bottle, the injection advancement component and the safety sheath are combined into a syringe, the syringe is protected from being accidentally touched by the safety protection mechanism between the safety sheath and the injection advancement component. To ensure the safety of the syringe.

When the syringe is injected, the user only needs to remove the safety sheath first, so that the safety pin in the safety sheath is separated from the safety buckle of the injection pusher, so that the syringe is in an injectable state, so that it has good use. Simplicity and safety; when the user releases the buckle state between the injection propulsion assembly and the injection push rod, the elastic force of the compression spring can be used to push the injection push rod to generate an ejection, thereby causing the needle to pass through the needle sheath and penetrate the medicament In the bottle, the bubble-free filling agent is automatically completed, and the medicine in the elastic pushing bottle is continuously injected into the body of the injected person, so that the syringe has a quick and simple function when being used for injection.

In addition, the syringe of the present invention can directly contain two or more medicine bottles and a corresponding number of needles, and can apply a plurality of medicines to the person to be injected at the same time, and can be applied to emergency injection and the like.

The second purpose of this creation is to use a safety sheath to be placed on the needle assembly to bend the needle with a safety insert in the safety sheath, so that the bending operation of the needle has a safe and simple function.

1‧‧‧Needle assembly

10‧‧‧Needle sheath

11‧‧‧ needle

111‧‧‧first tip

112‧‧‧second tip

113‧‧‧Block

12‧‧‧ Sealing film

13‧‧‧Shell

131‧‧‧ needle positioning space

132‧‧‧Assembly opening

133‧‧‧Soft plugging

14‧‧‧Needle positioning seat

141‧‧‧End Plate Department

142‧‧‧ Ring Plate Department

15‧‧‧ Socket ring

2‧‧‧ Pharmacy kit

20‧‧‧Pill bottle cover

21‧‧‧shell end caps

3‧‧‧Injection propulsion components

30‧‧‧Outer sheath group

31‧‧‧Injection putter group

310‧‧‧Compressed spring

311‧‧‧Injection putter

312‧‧‧ first pole

313‧‧‧Second pole

314‧‧‧Apartment

315‧‧‧Safety buckle

316‧‧‧Snap tab

317‧‧‧ slotting

318‧‧‧Shrap

319‧‧‧ pin hole

32‧‧‧Outer casing

33‧‧‧Inner casing

34‧‧‧Pushing sleeve

341‧‧‧ buckle end wall

342‧‧‧through hole

343‧‧‧ Limit bumps

35‧‧‧ Pressing the casing

351‧‧‧ Pressing the end wall

352‧‧‧through holes

353‧‧‧Limited slot

4‧‧‧Safety jacket

40‧‧‧ Socket

41‧‧‧Safe plug

5‧‧‧Pharmaceutical bottles

50‧‧‧ bottle

51‧‧‧Soft plugging

52‧‧‧Piston

53‧‧‧Fixed collar

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view of a preferred embodiment of the present invention for use with a single medicament bottle.

Figure 2 is a schematic cross-sectional view of a preferred embodiment of the present invention for applying a two-agent bottle.

Figure 3 is a schematic view showing the appearance of a preferred embodiment of the syringe shown in Figure 2.

4 is a perspective exploded view of the preferred embodiment of the syringe of FIG. 2 and the two medicament bottles.

Figure 5 is a perspective exploded view of the needle guard of the preferred embodiment of the syringe of Figures 2 through 4.

Figure 6 is a perspective view of the second injection pusher of the preferred embodiment of the syringe of Figures 2 and 4.

Fig. 7 is a view showing a state in which the safety sheath is removed and the pressing sleeve is pressed to release the safety buckle state in the preferred embodiment of the syringe provided with the two medicine bottles shown in Fig. 2.

Figure 8 is a schematic view of the syringe with the two drug bottles shown in Figure 2. After the safety buckle is released, the compression spring provides the elastic force to pierce the needle tip of the first tip of the needle, and the second tip of the needle Use in the bottle State diagram.

Fig. 9 is a view showing the state of use of the syringe with the two drug bottles shown in Fig. 2 after the injection is completed, and the safety sheath is placed on the outer side of the needle sheath and the bending needle.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , several preferred embodiments of the present invention are disclosed. The syringe is mainly composed of a needle assembly 1 , a medicine kit 2 , an injection propulsion assembly 3 , and A safety sheath 4 for providing one or more vials 5 for installation therein for providing an injection.

As shown in FIGS. 4 and 5, the needle assembly 1 includes a hollow needle guard 10, one or more needles 11 and a membrane 12, and a needle positioning space 131 is formed in the needle sheath 10. The needle sheath 10 is provided with a soft sealing 133 at one end of the needle positioning space 131 to form a closed end, and the needle sheath 10 forms a fitting opening 132 at the other end of the needle positioning space 131, and the needle 11 is placed through the fitting opening 132. In the needle positioning space 131, when the needles 11 are two or more, the needles 11 are mounted in a parallel arrangement in the needle sheath 10, and the needles 11 include a first tip portion 111 and a second tip portion. The portions 112 are respectively located at the two ends of the needle 11, the first tip portion 111 of the needle 11 extends to the soft sealing 133, the second tip portion 112 of the needle 11 extends toward the fitting opening 132, and the sealing film 12 is fixed to the needle sheath The needle positioning space 131 is closed in the assembly opening 132 of the 10, and the needle 11 is sealed in the needle guard 10 provided with the sealing film 12 to prevent the needle 11 from being exposed and contaminated.

As shown in FIG. 4 and FIG. 5, in the preferred embodiment, The needle guard 10 includes a sleeve 13 , a needle positioning seat 14 and a set of rings 15 . The sleeve 13 defines the needle positioning space 131 , and the sleeve 13 has the soft sealing 133 formed at one end thereof. The closed end is formed at the other end of the casing 13. The needle positioning seat 14 is mounted in the needle positioning space 131 of the casing 13 and is axially displaceable along the casing 13. The needle positioning seat 14 has an end plate portion 141 and a ring plate portion 142 formed on the outer peripheral edge of the end plate portion 141 extending toward one end, so that a space is formed in the needle positioning seat 14, and the ring plate portion 142 faces the fitting opening 132 of the casing 13 The sealing film 12 is disposed in the fitting opening 132 of the casing 13. The needle 11 has a blocking piece 113 adjacent to the second tip portion 112. The first tip portion 111 of the needle penetrates into the soft sealing 133 of the casing 13, the needle. The second tip portion 112 passes through the needle positioning seat 14 , and the blocking piece 113 abuts against the end plate portion 141 of the needle positioning seat 14 , and the socket ring 15 is mounted on the inner peripheral wall of the fitting opening 132 of the casing 13 . For assembling the injection propulsion assembly 3.

As shown in FIG. 2 and FIG. 4, the medicine kit 2 includes a medicine bottle casing 20 and a set of shell end caps 21 for accommodating one or two medicine bottles 5, the medicine bottle 5 The bottle body 50 comprises a bottle body 50. One end of the bottle body 50 is a bottle end having a soft plug 51. The periphery of the soft plug 51 of the bottle end is fixed with a fixing collar 53 to close the bottle end for the soft plug 51. The other end of the medicine bottle 5 is an open end, and a piston 52 is disposed in the bottle body 50 to form a closed liquid medicine filling space inside the bottle body 50, and the medicine bottle casing 20 is provided with the medicine bottle 5 Wherein, the vial casing 20 has a perforation formed at one end of the soft closure 51 corresponding to the medicament bottle 5, and the other end of the vial casing 20 is an open end, and the sleeve end cap 21 is fixed to the vial sleeve The open end of 20, the drug bottle 5 is sealed and fixed to Inside the kit 2.

As shown in FIG. 2 and FIG. 4, the injection propulsion assembly 3 includes an outer sheath set 30 and one or more sets of injection pusher sets 31, and the outer sheath set 30 is sleeved on the medicine sleeve. The outer side of the group 2, and the injection pusher set 31 are provided therein, one end of the outer sheath set 30 is assembled at the fitting opening 132 of the needle guard 10, and the outer sheath set 30 has a distal end portion away from the needle guard 10 In a safety card configuration, the injection pusher set 31 includes an injection push rod 311 and a compression spring 310. The injection push rod 311 includes a first rod portion 312, a second rod portion 313, and a An abutting portion 314 between the rod portion 312 and the second rod portion 313, the second rod portion 313 has a safety latch 315 at the end thereof, and the compression spring 310 is sleeved on the outer side of the second rod portion 313 of the injection push rod 311 for injection. The first rod portion 312 of the push rod 311 passes through the sleeve end cover 21 of the medicine sleeve 2 and extends into the bottle body 50 of the medicament bottle 5, and abuts against the piston 52. The two ends of the compression spring 310 respectively abut the injection push rod On the inner side wall of the abutting portion 314 of the 311 and the end portion of the outer sheath group 30, the compression spring 310 can provide the injection push rod 311 toward the medicine bottle 5 Force, the outer sheath safety locking set 30 is configured to be able to snap the push rod 311 for injection 315 snaps the safety.

As shown in FIG. 2 and FIG. 6 , when the injection rod set 31 is two or more sets, the injection push rod 311 may be of the same length or unequal length, and the length of the injection push rod is determined by the medicine bottle. The capacity of the liquid medicament inside is set accordingly.

As shown in FIG. 2 and FIG. 4, the safety sheath 4 is detachably assembled to the end of the outer sheath set 30. The safety sheath 4 includes a set of bodies 40 and is formed in the sleeve 40 corresponding to Number of injection putters 311 The safety lance 41 can be inserted into the safety buckle structure of the outer sheath set 30 and the safety buckle 315 of the injection push rod 311 to fix the injection push rod 311.

As shown in FIG. 2, FIG. 4 and FIG. 6, in the preferred embodiment, the end of the second rod portion 313 of the injection push rod 311 forms a tapered buckle protrusion 316 which is tapered toward the outer dimension and has The safety ejector 315 is formed by a slot 317 of the tapered latching portion 316 and a resilient piece 318 located outside the slot 317. The spring 318 has a slot 319 for communicating with the slot 317.

As shown in FIG. 2 and FIG. 4, the outer sheath set 30 includes an outer sleeve 32, an inner sleeve 33, a push rod sleeve 34 and a pressing sleeve 35, wherein the outer sleeve 32 is fastened. The inner sleeve 33 is provided with the medicine kit 2, and is installed together in the outer sleeve 32, and the inner sleeve 33 is assembled at one end of the sleeve 13 assembly opening 132. Socket ring 15 in. The inner sleeve 33 forms a perforation corresponding to the soft plug 133 of the medicament bottle 5, and the inner sleeve 33 has a perforated end contact sealing film 12, and the needle 11 corresponds to a soft plug 133 of a medicament bottle 5, respectively. .

The push rod sleeve 34 is connected to one end of the inner sleeve 33 away from the needle sheath 10 , and the injection push rod 311 is disposed in the inner sleeve 33 and the push rod sleeve 34 , the push rod The end of the sleeve 34 has a latching end wall 341, and a through hole 342 is formed in the latching end wall for providing the safety latch 315 for providing the injection push rod 311, and the end portion of the compression spring 310 is provided by the snap end wall 341. The part.

The pressing sleeve 35 is sleeved on the outside of the push rod sleeve 34 and extends into the outer sleeve 32. The pressing sleeve 35 can axially move with a limited distance between the outer sleeve 32 and the push rod sleeve 34. The pressing sleeve 35 extends away from the outer end of the outer sleeve 32 and has a pressing end wall 351. In the preferred embodiment, the inner wall of the pressing sleeve 35 forms a limiting slot 353 for the push rod. A limiting protrusion 343 is formed on the outer wall of the sleeve 34. The limiting protrusion 343 is located in the limiting slot 353, and the limiting slot 353 limits the distance that the pressing sleeve 35 can move axially relative to the push rod sleeve 34. The pressing end wall 351 is formed with a through hole 352 corresponding to the through hole 342 of the push rod sleeve 34, and the through hole 352 can be a tapered hole which is tapered from the inner outward direction by the push rod. The snap end wall 341 of the sleeve 34 and the pressing end wall 351 of the pressing sleeve 35 constitute the safety snap structure, so that the safety snap 315 of the injection push rod 311 can pass through the through hole of the push rod sleeve 34. The elastic piece 318 is protruded from the through hole 352 of the pressing end wall 351 of the pressing sleeve 35.

The safety sheath 4 can be sleeved on the outer side of the outer sleeve 32 and the pressing sleeve 35, and the safety inserts 41 in the safety sheath 4 are respectively inserted into the insertion holes of the elastic piece 318 of the safety buckle 315 of the injection push rod 311. 319 and extending into the slot 317, and then pushing the tapered snap protrusion 316 to expand and snap to the side of the buckle end wall 341 of the push rod sleeve 34 to be in a safely positioned state.

As shown in FIG. 2, with regard to the use case of the present inventive syringe, the syringe of the present invention can prevent the needle 11 from being exposed and contaminated due to the sealing of the needle 11 in the needle sheath 10 provided with the sealing film 12. Packing the medicament bottle 5 with the medicine kit 20 provides a good safety method for the medicine bottle 5, and when the syringe is used, the needle assembly 1 is filled with the medicine bottle 5 After the medicine kit 2, the injection propulsion assembly 3 and the safety sheath 4 are combined, the safety of the syringe can be ensured by the safety protection mechanism between the safety sheath 4 and the injection propulsion assembly 3.

As shown in Fig. 7, in use, the user must first remove the safety sheath 4, so that the safety spigot 41 in the safety sheath 4 is disengaged from the safety ejector 315 of the injection pusher 311, so that the syringe is in an injectable state. . At the time of injection, the user only needs to press the pressing sleeve 35, so that the pressing sleeve 35 pushes the safety buckle 315 to retract and can pass through the through hole 342 of the push rod sleeve 34, thereby solving the buckle state, as shown in FIG. In the following, the elastic force of the compression spring 310 is used to first push the injection push rod 311, the medicine bottle 5 and the inner sleeve 33 to eject, so that the second tip 112 of the needle 11 penetrates the soft plug 51 of the bottle end of the medicine bottle to the bottle. Inside, while the bubble-free filling agent is automatically completed, the first tip portion 111 of the needle 11 pierces the soft plug 133 of the needle guard 10 and penetrates into the body of the person to be injected, and continues to provide an elastic force at the compression spring 310, and pushes The squeeze injection pusher 311 injects the medicine in the medicine bottle 5 into the body of the injected person.

When the syringe of the present invention contains more than two pharmaceutical bottles and a corresponding number of needles, the injected person can simultaneously apply a plurality of drugs, and can be applied to emergency injection purposes.

As shown in FIG. 9, after the injection is completed, the syringe is removed from the injecting body, and the safety sheath 4 is sleeved on the outer side of the needle sheath 10, while the needle 11 is bent by the safety insert 41, and The bent needle 11 is placed inside the safety sheath 4 to prevent the user and the people around him from being stabbed by the needle.

1‧‧‧Needle assembly

10‧‧‧Needle sheath

11‧‧‧ needle

111‧‧‧first tip

112‧‧‧second tip

113‧‧‧Block

12‧‧‧ Sealing film

13‧‧‧Shell

131‧‧‧ needle positioning space

133‧‧‧Soft plugging

14‧‧‧Needle positioning seat

15‧‧‧ Socket ring

2‧‧‧ Pharmacy kit

20‧‧‧Pill bottle cover

21‧‧‧shell end caps

3‧‧‧Injection propulsion components

30‧‧‧Outer sheath group

31‧‧‧Injection putter group

310‧‧‧Compressed spring

314‧‧‧Apartment

315‧‧‧Safety buckle

316‧‧‧Snap tab

317‧‧‧ slotting

318‧‧‧Shrap

319‧‧‧ pin hole

32‧‧‧Outer casing

33‧‧‧Inner casing

34‧‧‧Pushing sleeve

342‧‧‧through hole

343‧‧‧ Limit bumps

35‧‧‧ Pressing the casing

352‧‧‧through holes

353‧‧‧Limited slot

4‧‧‧Safety jacket

40‧‧‧ Socket

41‧‧‧Safe plug

5‧‧‧Pharmaceutical bottles

50‧‧‧ bottle

51‧‧‧Soft plugging

52‧‧‧Piston

Claims (8)

A syringe comprising: a needle assembly comprising a hollow needle sheath, at least one needle and a membrane, wherein a needle positioning space is formed in the needle sheath, and the needle sheath is provided with a soft seal at one end of the needle positioning space The plug forms a closed end, and the needle sheath forms an assembly opening at the other end of the needle positioning space, the needle is placed in the needle positioning space, and the sealing film is fixed in the assembly opening of the needle sheath, so that the needle is Sealed in a needle sheath provided with a sealing film; a medicine kit comprising a hollow vial sleeve and a set of sleeve end caps disposed at a side end of the vial casing for accommodating at least one medicament a bottle, wherein the medicament bottle corresponds to a needle; an injection advancement assembly comprising an outer sheath set and at least one injection pusher set, the outer sheath set being sleeved outside the medicament set and providing an injection pusher assembly One end of the outer sheath set is assembled at the assembly opening of the needle sheath, and the end of the sheath set away from the needle sheath has a safety clamping structure, and the injection pusher set includes an injection push rod and a compression spring, injection One end of the rod passes through the sleeve end cover of the medicine set and extends into the medicament bottle to abut the piston. The other end of the injection push rod is sleeved with a compression spring and the end has a safety buckle, and the two ends of the compression spring respectively abut the injection push The rod and the outer sheath group enable the compression spring to provide an elastic force toward the injection bottle in the direction of the medicament bottle, the safety buckle structure of the outer sheath group can buckle the safety buckle of the injection push rod, and a safety sheath, The utility model comprises a set of bodies and a safety insert formed in the sleeve body and correspondingly injecting the number of push rods, the safety sheath is detachably set on the end of the outer sheath set, so that the safety insert can be inserted into the outer sheath In the safety buckle structure of the group and the safety buckle of the injection push rod, the injection push rod is buckled fixed. The syringe according to claim 1, wherein the injection pusher comprises a first rod portion, a second rod portion and an abutting portion between the first rod portion and the second rod portion, the second rod The safety clip is formed at the end of the portion, the compression spring is sleeved on the outer side of the second rod portion of the injection push rod, and the first rod portion of the injection push rod passes through the sleeve end cover of the medicine sleeve, and can be used to extend into the medicament The piston in the bottle abuts the piston in the bottle, and the two ends of the compression spring abut against the inner side wall of the abutting portion of the injection push rod and the outer sheath group, and the end of the second rod portion of the injection push rod forms an outward size. The tapered tapered latching portion has a slot extending through the tapered latching portion and a resilient piece located on the outer side of the slot, and the resilient piece has a slot for connecting the slot to form the safety latch; The outer sheath set includes an outer sleeve, an inner sleeve, a push rod sleeve and a pressing sleeve, wherein: the outer sleeve is assembled at one end of the assembly opening of the needle sheath, the inner sleeve is provided The medicine sleeve is assembled and installed together in the outer sleeve; the inner sleeve corresponds to the soft seal of the medicine bottle a through hole is formed in the plug, the inner sleeve has a perforated end contacting the sealing film; the push rod sleeve is connected to the inner sleeve away from the end of the needle sheath, and the injection push rod is disposed in the inner sleeve and the push rod sleeve, The end of the push rod sleeve has a snap end wall, and the buckle end wall forms a through hole for providing a safety clip for the injection push rod, and the buckle end wall provides a portion where the end of the compression spring abuts; the press sleeve Nested on the outside of the push rod sleeve and extending into the outer sleeve, the pressing sleeve can axially move between the outer sleeve and the push rod sleeve at a limited distance, and the pressing sleeve extends away from one end of the needle sheath and protrudes outside the outer sleeve And having a pressing end wall, the pressing end wall is formed with a through hole corresponding to the push rod sleeve The hole, the buckle end wall of the push rod sleeve and the pressing end wall of the pressing sleeve constitute the safety snap structure, so that the safety buckle of the injection push rod can pass through the through hole of the push rod sleeve, and is worn through In the through hole of the pressing sleeve, the elastic piece of the safety buckle protrudes out of the through hole of the pressing end wall of the pressing sleeve, and the safety sheath can be sleeved on the outer side of the outer sleeve and the pressing sleeve, and the safety insertion in the safety sheath The tip is inserted into the insertion hole of the elastic spring of the injection push rod and protrudes into the slot, thereby pushing the tapered buckle protrusion to expand and snap to the side of the buckle end wall of the push rod sleeve. The syringe according to claim 2, wherein the through hole is a tapered hole which is tapered from an inner to outer dimension, the inner wall of the pressing sleeve forms a limiting groove, and the limiting protrusion is formed on the outer wall of the push rod sleeve. The limiting protrusion is located in the limiting slot, and the limiting slot limits the distance that the pressing sleeve can move axially relative to the push rod sleeve. The syringe according to any one of claims 1 to 3, wherein the two ends of the needle respectively form a first tip portion and a second tip portion, and a blocking piece between the first tip portion and the second tip portion The first tip of the needle extends to the soft plug, and the second tip of the needle is oriented toward the sealing film; the needle sheath comprises a set of shells, a needle positioning seat and a set of rings, wherein the sleeve is formed In the needle positioning space, one end of the sleeve has the soft plug to form a closed end, and the assembly opening is formed at the other end of the sleeve, and the needle positioning seat is installed in the needle positioning space of the sleeve and can be along the sleeve The axial displacement, the needle positioning seat has an end plate portion and a ring plate portion formed on the outer peripheral edge of the end plate portion and extending toward one end, a space is formed in the needle positioning seat, and the ring plate portion faces the assembly opening of the casing, the sealing film Provided in the assembly opening of the casing, the needle has a blocking piece adjacent to the second tip, the first tip of the needle penetrates into the soft sealing of the casing, and the second tip of the needle passes through the needle positioning seat, the blocking piece Abutting against the end plate portion of the needle positioning seat, the socket ring is mounted on the sleeve The inner peripheral wall of the assembly opening is used to assemble the injection propulsion assembly. The syringe of claim 4, wherein the needle assembly has more than two needles that are mounted in parallel in the needle guard. The syringe according to any one of claims 1 to 3, wherein the medicine kit comprises a medicine bottle casing and a set of shell end caps, wherein the medicine bottle casing provides the medicine bottle to be installed therein, the medicine The bottle sleeve has a perforation corresponding to the medicine bottle at one end, and the other end of the medicine bottle sleeve is an open end, and the sleeve end cover is fixed to the open end of the medicine bottle casing, and the medicine bottle is sealed and fixed to the medicine Inside the set. The syringe according to claim 4, wherein the medicine kit comprises a medicine bottle casing and a set of shell end caps, wherein the medicine bottle casing provides the medicine bottle installed therein, and the medicine bottle casing has one end phase Corresponding to the perforation of the medicament bottle, the other end of the vial casing is an open end, and the sleeve end cap is fixed to the open end of the vial casing, and the medicament bottle is sealed and fixed in the medicament set. The syringe according to claim 5, wherein the medicine kit comprises a medicine bottle casing and a set of shell end caps, and the medicine bottle casing provides the medicine bottle installation, wherein the medicine bottle casing has one end corresponding to The medicine bottle is perforated, and the other end of the medicine bottle casing is an open end, and the sleeve end cover is fixed to the open end of the medicine bottle casing, and the medicine bottle is sealed and fixed in the medicine set.