TWM461437U - Assembly-type syringe - Google Patents

Description

Combined syringe

This work is about a syringe, especially a reusable combination syringe.

When the conventional syringe is used, the components are all in contact with the medicament, and based on the safety of the injection, after the syringe is used, all the components of the entire syringe need to be discarded, so the cost of the patient is high in the syringe. , resulting in a heavy burden of treatment, and the amount of waste used in the syringe after use.

In order to solve the problem that the entire syringe must be completely discarded after the use of the existing syringe, some people have created a syringe product that can be reused for some components. The syringe is mainly constructed by using the syringe body as a reusable structure, and only the medicament container and the needle containing the fixed dose injection medicament are disposable members to meet the safety of use of the injection medicament and achieve savings. Materials that reduce the need for unnecessary material waste.

However, the conventional syringe product which can be repeatedly reused by some components is disadvantageous in that the design of the syringe is poor due to its poor structural design and the inconvenience of the operation of replacing the pharmaceutical bottle.

In addition, based on the safety of the use of the syringe, the reusable components of the aforementioned syringes should also consider the number of reasonable reuses to maintain the safety of the use of the syringe. However, some of the conventional components are currently known. In the reusable combination syringe construction, there is no mechanism for limiting the number of uses, and there is a need for further improvement.

The main purpose of the present invention is to provide a combined syringe, which is used to create a solution to the inconvenience of the inconvenient operation of a conventional syringe for refilling a pharmaceutical bottle.

In order to achieve the foregoing, the combined syringe proposed by the present invention comprises: a safety needle set comprising a medicine bottle cover, a needle cover and a safety cover, the medicine bottle cover comprising a fixed end and A combined end portion is respectively located at two ends, and the fixed end portion is used for assembling the bottle end of a medicine bottle, the needle sleeve comprises a set body and a needle set on the sleeve body, and the sleeve sleeve is sleeved on the combination of the medicine bottle cover On the end, the needle is located at one end of the sleeve for piercing into the medicament bottle through the cover of the medicine bottle, and the safety cover is detachably sleeved on the outer side of the medicine bottle cover, and the needle cover is covered therein; An injection sleeve set comprising an engagement sleeve and an injection auxiliary sleeve, the engagement sleeve comprising an engagement end and a set of end portions respectively at the two ends, the engagement sleeve is sleeved on the outer side of the medicament bottle, and The combined end of the engaging end and the vial cover forms a detachable set of rotating combined structure, the injection assisting sleeve comprises a hollow sleeve body and an auxiliary flap formed on the outside of the sleeve body, and the injection auxiliary sleeve is The sleeve body is detachably assembled to the joint sleeve The outer side of the set; and an injection pusher set, comprising a push rod and a pressing cover, the push rod is disposed in the injection sleeve group for extending into the medicament bottle to abut the piston in the medicament bottle, pushing The rear end of the rod extends beyond the injection sleeve set and the compression cover is assembled.

By creating a combination syringe, the creative combination syringe uses a safe needle set of the medicine bottle cover for assembling the medicine bottle, and the injection sleeve set is set outside the medicine bottle, and the injection push rod assembly is provided. Wherein, the plunger is inserted into the medicament bottle to abut the piston in the medicament bottle, and the injection sleeve group is configured to adopt a detachable rotating combination structure between the joint sleeve and the vial cover. In addition to providing the disassembly function of the drug bottle, and the components such as the injection sleeve set and the injection pusher set can be reused to reduce unnecessary waste of resources, the combined syringe of the present invention utilizes its rotary combination. The structure has a good ease of disassembly in the operation process of disassembling the drug bottle.

The second purpose of the present invention is that the injection assisting sleeve forms an inner baffle with a buckle inside the sleeve body, and a limit stop is disposed adjacent to the inner partition of the inner wall of the sleeve; The push rod has a rod body and at least one interference thread protrusion formed on an outer circumferential surface of the middle portion of the round rod, and the outer side of the rod body is sleeved with a counting ring that can rotate in a limited angle range of less than 360 degrees and greater than 0 degrees. a threaded groove formed in the counting ring and a ratchet groove of a communicating thread groove. The interference groove of the plurality of forward spirals is formed on the groove wall of the thread groove for the interference thread on the push rod when the push rod is pulled backward The bump passes through the interference thread in the thread groove, so that the counting ring can be rotated forward by a predetermined angle, and a plurality of forward single oblique ratchet teeth are formed on the groove wall of the ratchet groove, and the snap ring of the injection auxiliary sleeve is provided. On the ratchet of one of the ratchet slots, and the outer side of the counting ring forms a stop stop, the counting ring can no longer rotate when the counting ring rotates on the push rod to the stop stop contact limit stop The injection putter group cannot be pulled back to limit the combined syringe Repeat the number of times to avoid over-reuse of the combination syringe to ensure the combined syringe Use security.

10‧‧‧Safety Needle Set

11‧‧‧Pill bottle cover

111‧‧‧Fixed end

112‧‧‧ Combination end

113‧‧‧ card jointed bump

12‧‧‧ needle cover

121‧‧‧ Socket

122‧‧‧ needle

13‧‧‧Safety cover

20‧‧‧Injection sleeve set

21‧‧‧Joint sleeve

211‧‧‧ joint end

2111‧‧‧L-shaped groove

212‧‧‧Group end

213‧‧ ‧Baffle Department

23‧‧‧Injection auxiliary sleeve

231‧‧‧Sleeve body

2321‧‧‧ group slot

2322‧‧‧ activity slot

2323‧‧‧Internal partition

2324‧‧‧Limit stop

233‧‧‧Auxiliary fins

2325‧‧‧ Snaps

234‧‧ ‧ viewing window

30‧‧‧Injection putter group

31‧‧‧Put

311‧‧‧ rod body

3111‧‧‧Interference thread projections

312‧‧‧Piston push block

313‧‧‧Stop control end

314‧‧‧ End

315‧‧‧Stop ribs

316‧‧‧ card slot

317‧‧‧ Activity section

318‧‧‧ Pushing Board Department

319‧‧‧Limited Board

32‧‧‧Press cover

321‧‧‧ Pressing the cover

3211‧‧‧Baffle

3212‧‧‧Stop card

3213‧‧‧Snap groove

322‧‧‧ cover

40‧‧‧ Counting ring

41‧‧‧ display torus

42‧‧‧ marking line

43‧‧‧Thread groove

44‧‧‧ ratchet groove

45‧‧‧stop stop

50‧‧‧Pharmaceutical bottles

51‧‧‧Piston

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of a preferred embodiment of the present combined syringe.

2 is a partial perspective exploded view of the preferred embodiment of the combination syringe of FIG. 1 and a medicament bottle.

3 is a perspective exploded view of the preferred embodiment of the combination syringe of FIG. 1 and a medicament bottle.

4 is a schematic exploded view of the secondary ring, the rod body and the piston push block in the preferred embodiment of the combined syringe shown in FIG. 3.

Figure 5 is a cross-sectional view showing the preferred embodiment of the combined syringe of Figure 1 after the pharmaceutical bottle is assembled.

Figure 6 is a schematic cross-sectional view of the preferred embodiment of the combination syringe of Figure 1 after injection of the medicament.

Figure 7 is a side cross-sectional view showing the position of the face line 7-7 shown in Figure 6.

Figure 8 is a side cross-sectional view showing the position of the face line 8-8 shown in Figure 6.

Figure 9 is a partial cross-sectional view showing the injection pusher set pulled rearward.

Figure 10 is a side cross-sectional view showing the position of the face line 10-10 shown in Figure 9.

Figure 11 is a perspective exploded view of another preferred embodiment of the inventive combined syringe.

Figure 12 is a perspective view of the preferred embodiment of the combination syringe of Figure 1 disassembling the needle set incorporating the vial from the injection sleeve set.

As shown in FIG. 1, a preferred embodiment of the inventive combination syringe is disclosed. The combination syringe includes a safety needle set 10, an injection sleeve set 20, and an injection pusher set 30.

As shown in FIG. 1 to FIG. 3 and FIG. 5, the safety needle set 10 includes a vial cover 11, a needle cover 12 and a safety cover 13, and the end of the vial cover 11 is fixed by a perforation. The end portion 111 has a hollow combined end portion 112 at the other end of the vial cover, the fixed end portion 111 is for assembling the bottle end of the medicament bottle 50, and the hollow combined end portion 112 is communicated with the through hole; the needle sleeve 12 includes a set of body 121 and a needle 122 passing through the sleeve 121, and is sleeved on the outer side of the fixed end portion 111 of the vial cover 11 with the sleeve 121 of the needle cover 12, and the needle 122 is located in the sleeve 121. One end is inserted into the vial 50 through the perforation of the vial cover 11 and can be pierced through the closure of the vial of the vial 50.

As shown in FIG. 1 , FIG. 2 and FIG. 5 , the safety cover 13 is detachably sleeved outside the fixed end portion 111 of the vial cover 11 and the needle cover 12 is covered therein to make the needle 122 Not exposed and free from hurting people.

As shown in FIG. 2, FIG. 3 and FIG. 5, the injection sleeve set 20 includes an engagement sleeve 21 and an injection auxiliary sleeve 23. The engagement sleeve 21 can be a cylinder made of a transparent material, and the sleeve is sleeved. One end of the barrel 21 is an engaging end portion 211, and the other end of the engaging sleeve 21 is a joint end portion 212. The engaging sleeve 21 is sleeved on the outer side of the medicine bottle 50, and the joint end portion 211 of the joint sleeve 21 is engaged. The combined end 112 of the vial cover 11 is rotated. A baffle portion 213 having a through hole is formed in the joint sleeve 21, and the inner portion of the joint sleeve 21 is partitioned into a first accommodating portion extending inwardly from the joint end portion 211 and a self-assembled end portion 212 Second accommodating interval The first accommodating section and the second accommodating section are communicated through the through hole/ in the baffle portion 213, and the medicine bottle 50 is disposed in the first accommodating section, and the end of the medicine bottle 50 can abut against the baffle On the part 213.

As shown in FIG. 2, FIG. 3 and FIG. 5, in the preferred embodiment, the rotational assembly structure of the joint end portion 211 of the joint sleeve 21 and the combined end portion 112 of the vial cover 11 is such that An internal thread is formed in the inner side wall of the combined end portion 112 of the vial cover 11, and the outer peripheral surface of the joint end portion 211 of the joint sleeve 21 is externally threaded, so that the joint sleeve 21 is screwed with the joint end portion 211 thereof. In the combined end portion 112 of the vial cover 11, the joint sleeve 21 and the vial cover 11 can be screwed together in a detachable group.

In another preferred embodiment shown in FIG. 11, the rotationally coupled formation of the engaging end portion 211 of the engaging sleeve 21 and the combined end portion 112 of the vial cover 11 is such that the engaging end of the engaging sleeve 21 is engaged. The portion 211 is distributed on the outer peripheral surface thereof to form a plurality of L-shaped grooves 2111 including a first groove portion extending axially or obliquely from the side end of the joint end portion 211, and extending laterally from the end of the first groove portion. a second groove portion, the medicine bottle cover 11 is provided with a plurality of snap protrusions 113 on the inner side wall of the combined end portion 112, so that the joint sleeve 21 is assembled with the joint end portion 211 of the vial cover 11 When the end portion 112 is assembled, the spur snapping projection 113 corresponds to the first groove portion, and the rotating end assembly of the engaging end portion 211 of the engaging sleeve 21 and the combined end portion 112 of the vial cover 11 is shunned. Sliding to the end along the first groove portion of the L-shaped groove 2111, and then rotating laterally to the second groove portion in the lateral direction to lock the positioning, so that the joint sleeve 21 and the vial cover 11 can be connected in a rotating manner. The assembled groups are joined together, and the joint sleeve 21 and the vial cover 11 can be disassembled in an operation manner smaller than an angle range of one rotation or less than 90 degrees of rotation. .

As shown in FIG. 2, FIG. 3 and FIG. 5, the injection auxiliary sleeve 23 is detachably assembled outside the assembly end portion 212 of the joint sleeve 21. In the preferred embodiment, the injection aid sleeve The sleeve 23 includes a hollow sleeve body 231. The outer peripheral surface of the sleeve body 231 forms an auxiliary flap 233. The sleeve body 231 defines an inner partition 2323 having an inner hole, and the inner partition 2323 and the inside of the sleeve body 231. The space is divided into a set of slots 2321 and a movable slot 2322, and the assembly of the assembly end portion 212 of the engagement sleeve 21 is provided by the assembly slot 2321.

As shown in FIG. 2 and FIG. 3, the injection auxiliary sleeve 23 can form a latch 2325 on the surface of the inner partition 2323 adjacent to the assembly groove 2321. The injection auxiliary sleeve 23 is adjacent to the inner partition on the inner wall thereof. A limit stop 2324 is provided at 2323. The injection auxiliary sleeve 23 can also be provided with a viewing window 234 extending radially from the sleeve body 231 into the assembly slot 2321. The viewing window 234 is adjacent to the limit stop 2324. At the office.

As shown in FIG. 2 to FIG. 5 , the injection pusher set 30 includes a push rod 31 and a pressing cover 32 , and the push rod 31 is disposed through the injection assisting sleeve 23 , the engaging sleeve 21 and the medicament bottle 50 . The push rod 31 includes a rod-shaped rod 311. The rod body 311 passes through a through hole in the baffle portion 213 of the joint sleeve 21 and an inner hole in the inner partition plate 2323 of the injection auxiliary sleeve 23. One end of the rod body 311 is a piston pushing end, and the other end is a pressing connecting end. The piston pushing end of the rod body 311 can be further connected with a piston pushing block 312 for extending into the medicament bottle 50 to push against the piston 51. The pressing connecting end of the rod body 311 extends out of the injection assisting sleeve 23 and the outside of the engaging sleeve 21, and the pressing cover 32 is assembled on the pressing connecting end to be interlocked with the push rod 31.

As shown in FIG. 2 to FIG. 5, in the injection putter group 30, The outer peripheral surface of the middle portion of the rod body 311 of the push rod 31 may further form at least one interference thread projection 3111. The pressing engagement end of the rod body 311 has a stop control end portion 313, and the stop rotation control end portion 313 The end 314 has a diameter larger than the diameter of the rod body, and has a plurality of stall ribs 315 formed on the outer peripheral surface of the rod body 311 adjacent to the end 314, and an axially extending card is formed between each two adjacent stop ribs 315. The groove 3213 is engaged with the groove 316, and the outer peripheral surface of the second end of the rod body 311 forms a circular push plate portion 318 on the side of the stop control end portion 313 toward the middle of the rod body 311, and the rod body 311 is pushed on the plate. A movable portion 317 is formed between the end portion 318 and the end portion of the rotation preventing rib 315. In the preferred embodiment, the rod body is spaced apart from the side of the middle portion of the rod body 311 by the limiting plate portion 319. .

As shown in FIG. 2 to FIG. 5, the injection pusher set 30 further includes an annular counting ring 40, which can be assembled in the injection pusher group 30 in a directional rotation within a limited angular range. On the push rod 31, the finite angle is less than 360 degrees and greater than 0 degrees, and a display ring surface 41 can be formed on the outer circumferential surface of the counting ring 40. A display line 42 can be further formed on the display ring surface 41 to display the toroidal surface 41. Corresponding to the viewing window 234 of the injection assist sleeve 23.

As shown in FIG. 2 to FIG. 5, a plurality of threaded grooves 43 and a ratchet groove 44 communicating with the thread groove 43 are formed in the counting ring 40, and a plurality of parallel helical interference threads are formed on the groove wall of the thread groove 43. When the interference screw projections 3111 of the push rod 31 of the injection pusher group 30 correspond to the interference threads in the thread groove 43, the counting ring 40 can be rotated forward by a predetermined angle, the groove of the ratchet groove 44. Forming a plurality of forward single oblique ratchets on the wall, and providing a snap ring 2325 in the injection assisting sleeve 23 abutting the ratchet groove On one of the ratchets 44, the counting ring 40 can only be rotated in one direction by the push rod 31, and cannot be reversely rotated. The number of teeth of the single oblique ratchet is determined according to the number of repeated uses set by the combined syringe, and The range and size of the ratchet distribution in the ratchet groove 44 are set according to the finite angle of rotation that can be set by the counting ring 40 and the angle of each rotation, that is, the counting ring 40 is rotated once for each rotation. The distance of a single oblique ratchet (ie one square).

As shown in FIG. 2 to FIG. 5, the outer circumferential surface of the counting ring 40 forms a rotation stop block 45, and the counting ring 40 is successively rotated on the push rod 31 to the rotation stop block 45 to contact the limit stop 2324. At this time, the counting ring 40 can no longer be rotated, so that the injection pusher group 30 can no longer be pulled backward, thereby using the counting ring 40 in combination with the interference screw projection 3111 of the push rod 31 and the snap fastener 2325 in the injection auxiliary sleeve 23. Constructed to form a counting structure.

As shown in FIG. 2, FIG. 3 and FIG. 5, the pressing cover 32 may be an integrally formed independent member or may be a combination of a plurality of independent components. In the preferred embodiment, the pressing cover 32 has a pressing. The cover 321 is further provided with a cover 322, and the pressing cover 32 is movably disposed at the stop control end 313 of the push rod 31. In the preferred embodiment, the pressing cover 321 is A first mounting groove and a second mounting groove are respectively formed on the side, and the pressing cover 321 has a partition 3211 between the first mounting groove and the second mounting groove, and the first 32mm is formed in the partition 3211. The inner hole of the second mounting groove, the pressing cover 321 forms a plurality of stop hooks 3212 arranged on the outer side of the inner hole on the side of the partition 3211 adjacent to the first mounting groove, and the end of the stop hook 3212 has a hook portion, and the pressing The cover 321 is axially movably sleeved on the push rod 31 of the injection pusher set 30 by its plurality of stop hooks. The end portion 313 is controlled such that the hook portion of the stop hook 3212 can be engaged with the movable portion 317 between the pusher portion 31 of the injection pusher group 30 and the end portion of the stop rib 315 and the engaging groove 3213. The grooves 316 move.

As shown in FIG. 2, FIG. 3 and FIG. 5, the cover 322 is detachably assembled to the second mounting groove of the pressing cover 321 . In the preferred embodiment, the cover 322 is a card. The connection mode is set in the pressing cover 321 , wherein the pressing cover 321 is provided with a plurality of locking holes on the periphery of the partition 3211 with respect to the inner hole, and the cover 322 is provided with a plurality of fixing hooks, and the cover 322 is assembled. The second mounting groove of the cover 321 is pressed, and the corresponding locking holes are respectively disposed through the fixing hooks to fix the cover 322 in the pressing cover 321 .

As shown in FIG. 2, FIG. 3 and FIG. 5, the medicine bottle cover 11 of the safety needle set 10 is sleeved on the bottle end of the medicine bottle 50 containing the medicine. Next, the combination of the injection sleeve set 20 and the injection pusher set 30 is sleeved on the outer side of the medicament bottle 50, wherein the medicament bottle 50 is inserted into the joint sleeve 21 of the injection sleeve set 20, and the vial sleeve is positioned. The combined end of the cover 11 and the joint end of the joint sleeve 21 are rotationally fixed and fixed, and the push rod 31 of the injection pusher set 30 extends into the medicament bottle 50, and the piston push block 312 at the front end of the push rod 31 abuts against the medicament bottle 50. Piston 51.

At the time of injection, as shown in FIG. 5 to FIG. 8, the user first removes the safety cover 13 of the safety needle set 10, pierces the human body with the needle 122, fixes the injection auxiliary sleeve 23 with a finger, and presses the injection push rod. The pressing cover 32 of the group 30 pushes the pushing plate portion 318 of the push rod 31 forward through the pressing cover 32, thereby moving the injection pusher group 30 and applying the medicine via the piston 51. The liquid medicament in the vial 50 is injected into the body via the needle 122.

After the injection is completed, as shown in FIG. 6 to FIG. 8 , when the user removes the medicine bottle 50, the user first sleeves the safety cover 13 to the outside of the fixed end portion 111 of the vial cover 11 to wrap the needle cover 12 . Thereafter, the vial cover 11 and the engaging sleeve 21 are relatively reversely rotated, even if the engaging end portion 211 of the engaging sleeve 21 is disengaged from the combined end portion 112 of the vial cover 11, at this time, as shown in FIG. As shown, the user can remove the safety needle set 10 together with the used medicament bottle 50 from the injection sleeve set 20, and remove the safety needle set 10 and the medicament bottle 50 for safety. The components are not reused, and the combination of the injection sleeve set 20 and the injection pusher set 30 can be reused.

The inventive combined syringe can further utilize its counting configuration during use to provide the combined syringe with a limit on the number of times of reuse. As shown in FIG. 5 to FIG. 8 , when the user pushes the push plate portion 318 of the push rod 31 forward by the pressing cover 32 to apply force, the stop hook 3212 in the pressing cover 32 moves due to the movement. To the movable section 317 of the stop control end 313 of the push rod 31, the pressing cover 32 and the push rod 31 are relatively rotatable, and the push rod 31 is a free direction body, and the interference thread projection on the push rod 31 When the 3111 passes through the counting ring 40, the single oblique ratchet in the ratchet groove 44 of the counting ring 40 is restricted by the latch 2325 in the injection assisting sleeve 23, so that the push rod 31 follows the counting ring 40. The thread groove 43 rotates and naturally slides over.

When the injection is completed, the safety needle set 10 of the combined syringe is removed from the injection sleeve set 20 together with the used medicament bottle 50, and another medicine bottle 50 and the safety needle set 10 are to be replaced. As shown in FIG. 6 to FIG. 8 , the user first pulls the push rod 31 backward through the pressing cover 32. At this time, the stop hook 3212 in the pressing cover 32 moves to the stop control end of the push rod 31. The engaging groove 3213 of the stopping rib 315 of the 313 is engaged with the groove 316, so that the push rod 31 can not rotate and can only move linearly, and interferes with the threaded projection 3111 on the push rod 31 through the thread groove 43 in the counting ring 40. When the thread is interfered, since the single oblique ratchet in the ratchet groove 44 of the counting ring 40 is restricted by the latch 2325 in the injection assisting sleeve 23, the counting ring 40 is replaced with the safety needle 50 and the safety needle each time. When the set is 10, it will rotate one count in the forward direction.

As shown in FIG. 6 to FIG. 8 , when the combination of the injection sleeve set 20 and the injection pusher set 30 and its counting ring 40 reaches the predetermined number of times of repeated use, it must be discarded as a whole based on the safety of use to avoid excessive reuse. The present combined syringe provides a prompting function in its counting configuration, wherein the user pulls the push rod 31 backward by pressing the cover 32 each time, and the interference thread projection 3111 on the linear motion push rod 31 is used. The counting ring 40 is rotated by a predetermined angle by the interference thread of the thread groove 43 in the ring 40 until the repeated use reaches a predetermined number of times, and the limit of the rotation stop 45 on the counting ring 40 contacts the injection assisting sleeve 23. The position block 2324 prevents the counting ring 40 from rotating any more, and the injection pusher group 30 is blocked by the interference screw projection 3111 of the push rod 31 from being blocked outside the front end of the counting ring 40, and can no longer be pulled backward. On the other hand, the counting ring 40 The contour line 42 of the outer peripheral surface corresponds to the viewing window 234 for prompting the user that the combined syringe has reached the limit of the number of uses, and the combined syringe must be discarded as a whole.

10‧‧‧Safety Needle Set

11‧‧‧Pill bottle cover

111‧‧‧Fixed end

112‧‧‧ Combination end

12‧‧‧ needle cover

121‧‧‧ Socket

122‧‧‧ needle

13‧‧‧Safety cover

20‧‧‧Injection sleeve set

21‧‧‧Joint sleeve

211‧‧‧ joint end

212‧‧‧Group end

23‧‧‧Injection auxiliary sleeve

231‧‧‧Sleeve body

2322‧‧‧ activity slot

233‧‧‧Auxiliary fins

234‧‧ ‧ viewing window

30‧‧‧Injection putter group

31‧‧‧Put

311‧‧‧ rod body

3111‧‧‧Interference thread projections

312‧‧‧Piston push block

313‧‧‧Stop control end

314‧‧‧ End

315‧‧‧Stop ribs

316‧‧‧ card slot

317‧‧‧ Activity section

318‧‧‧ Pushing Board Department

319‧‧‧Limited Board

32‧‧‧Press cover

321‧‧‧ Pressing the cover

3211‧‧‧Baffle

322‧‧‧ cover

40‧‧‧ Counting ring

41‧‧‧ display torus

42‧‧‧ marking line

43‧‧‧Thread groove

45‧‧‧stop stop

50‧‧‧Pharmaceutical bottles

Claims (8)

The utility model relates to a combined syringe, comprising: a safety needle set, comprising a medicine bottle cover, a needle cover and a safety cover; the medicine bottle cover comprises a fixed end and a combined end respectively at the two ends, The fixed end portion is used for assembling a bottle end of a medicine bottle, the needle sleeve comprises a set body and a needle set on the sleeve body, and the sleeve body is sleeved on the combined end of the medicine bottle cover, the needle is located in the sleeve body One end is used to puncture the medicine bottle through the medicine bottle cover, the safety cover is detachably sleeved on the outer side of the medicine bottle cover, and the needle cover is wrapped inside; an injection sleeve group includes a joint a sleeve and an injection auxiliary sleeve, the joint sleeve includes an engaging end portion and a set of connecting end portions respectively at the two ends, the engaging sleeve is sleeved on the outer side of the medicine bottle, and the joint end portion and the medicine bottle sleeve cover The combined end portion forms a detachable group of rotating combined structure, the injection assisting sleeve comprises a hollow sleeve body and an auxiliary flap formed on the outside of the sleeve body, and the injection auxiliary sleeve is assembled with the sleeve body detachable group On the outside of the joint end of the joint sleeve; and an injection a rod set comprising a push rod and a pressing cover, the push rod is disposed in the injection sleeve group for extending into the medicament bottle to abut the piston in the medicament bottle, and the rear end of the push rod protrudes from the injection sleeve group The cover is pressed and assembled. The combination syringe according to claim 1, wherein the inner side wall of the combined end portion of the vial cover is internally threaded, and the outer peripheral surface of the joint end side end of the engaging sleeve is externally threaded, and the joint sleeve is joined to the joint end thereof. The portion is screwed into the combined end of the vial cover to form a rotating combination of the detachable set. The combination syringe of claim 1, wherein the joint The joint end of the sleeve is distributed on the outer peripheral surface of the end to form a plurality of L-shaped grooves, the L-shaped groove includes a first groove portion extending from the side end of the joint end, and a second groove extending laterally from the end of the first groove portion a portion of the inner side wall of the combined end of the vial cover is provided with a plurality of snap-fit bumps, and the joint end of the joint sleeve is assembled with the combined end of the vial cover, and the snap-on bumps are respectively along the corresponding A groove portion is slidably rotated to displace the locked position in the second groove portion to constitute a rotatably combined rotating structure. The combination syringe according to any one of claims 1 to 3, wherein the injection assisting sleeve forms an inner baffle with a buckle inside the sleeve body, and the inner wall of the sleeve body is adjacent to the inside a spacer is disposed at the partition; the push rod has a rod body and at least one interference thread protrusion formed on an outer peripheral surface of the middle portion of the round rod, and the outer sleeve of the rod body can be less than 360 degrees and greater than 0 degrees a counter-rotating counting ring in a limited angular range, a thread groove formed in the counting ring and a ratchet groove of a communicating thread groove, and a plurality of helical helical interference threads are formed on the groove wall of the thread groove for being used in the push rod When pulling backward, the interference thread on the push rod passes through the interference thread in the thread groove, so that the counting ring can be rotated forward by a predetermined angle to form a plurality of forward single oblique ratchets on the groove wall of the ratchet groove. The buckle of the injection auxiliary sleeve is abutted on one of the ratchet teeth, and the outer side of the counting ring forms a rotation stop block, and the counting ring rotates on the push rod to the rotation stop contact When the limit stop is stopped, the counting ring can no longer be rotated, and the injection putter group cannot be , Thereby limiting the number of the combined reuse of syringes. The combination syringe according to claim 4, wherein the rear end of the rod of the push rod has a stop control end portion, and the stop control end portion has a tip having a diameter larger than the diameter of the rod body, and has a plurality of distributions Formed on the outer circumference of the rod The ribs adjacent to the end face form an axially extending snap groove between each adjacent stop rib, and a push plate is formed on one side of the outer peripheral surface of the rod at the stop control end toward the middle of the rod body. a movable section formed between the pusher plate portion and the end portion of the stop rib; the pressing cover has a pressing cover seat, and the pressing cover seat has a partition plate adjacent to the side of the partition plate facing the push rod Forming a plurality of annularly arranged stop hooks, the end of the stop hook has a hook portion, and the cover seat is axially movably sleeved on the stop control end of the push rod of the injection push rod group by the plurality of stop hooks The hook of the stop hook can move between the movable section of the push rod of the injection pusher group and the engaging groove. The combination syringe according to claim 5, wherein the sleeve body of the injection assisting sleeve is provided with a viewing window extending radially from the outer peripheral surface to the inner portion, and the viewing window is adjacent to the limiting stopper. The outer circumferential surface of the counting ring forms a display toroid, and the display ring surface has a marked line, and the annular surface corresponds to the viewing window of the injection auxiliary sleeve. The combination syringe according to claim 5, wherein the engaging sleeve has a first receiving portion extending inwardly from the engaging end portion and a second receiving portion extending inwardly from the assembled end portion. In the interval, the inside of the joint sleeve forms a baffle portion having a through hole between the first accommodating portion and the second accommodating portion, and the medicine bottle is disposed in the first accommodating portion, and the end of the medicine bottle abuts An inner hole is formed in the inner partition of the injection auxiliary sleeve; the push rod of the injection pusher group passes through the through hole on the baffle portion of the joint sleeve and the injection auxiliary sleeve The inner hole of the inner partition of the cylinder is connected with a piston push block at the front end of the rod body, and the piston push block contacts the piston extending into the medicine bottle. The combination syringe according to claim 7, wherein the sleeve body of the injection assisting sleeve is provided with a viewing window extending radially from the outer peripheral surface to the inner portion, and the viewing window is adjacent to the limiting stopper. The outer circumferential surface of the counting ring forms a display ring surface, and the display ring surface has a marking line, and the ring surface corresponds to the viewing window of the injection auxiliary sleeve; the pressing cover seat forms a first assembly on both sides of the partition plate a slot and a second mounting slot, wherein the partition defines an inner hole connecting the first mounting slot and the second mounting slot, the stop hook is located in the first mounting slot, and the partition is provided with a plurality of cards at the periphery of the inner hole The receiving hole is provided with a cover plate in the second mounting groove of the pressing cover seat, and a plurality of fixing hooks are formed on the cover plate, and the fixing hooks are respectively disposed through the corresponding engaging holes.