TWI571279B - A syringe - Google Patents

Description

Counting syringe

This creation is about a syringe, especially a reciprocal syringe that can be reused and used to remind the user to abandon after a certain number of uses.

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, the author of the present application has previously proposed a syringe 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, 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 syringe. However, it is known that some components can be reused in the composition of the syringe. , does not provide a limit on the number of uses The mechanism is necessary for further improvement.

The main purpose of this creation is to provide a counter-type syringe that solves the problem of the existing syringe being over-reusable and resulting in poor safety.

In order to achieve the premise, the notebook of the present invention comprises: a needle set comprising a vial cover, a needle cover and a safety sheath, and the end of the vial cover has a combined end The other end has a locking end portion for assembling and fixing the bottle end of a medicine bottle, the needle sleeve comprises a set body and a needle disposed on the sleeve body, and the sleeve is sleeved on the medicine bottle On the combined end of the cover, the needle is located at one end of the sleeve for piercing into the medicament bottle through the vial cover, and the safety sheath is detachably sleeved on the outside of the vial cover, and the needle cover is covered An injection sleeve set comprising a clip sleeve, a stripping sleeve and an injection auxiliary sleeve, the clip sleeve has a snap end at one end and a set end at the other end, the clip The sleeve is sleeved on the outer side of the medicament bottle, and is detachably assembled with the engaging end portion of the medicine bottle cover; the one end of the stripping sleeve is abutting end and the other end is connected The end portion of the stripping sleeve is slidably sleeved on the outer side of the clip sleeve, and the abutting end portion abuts the engaging end portion of the vial cover. The stripping sleeve can be urged to push the engaging end of the vial cover to be disengaged from the latching end of the clip sleeve; the injection assisting sleeve comprises a hollow sleeve body and a sleeve An auxiliary fin is formed on the sleeve body of the body, and the auxiliary sleeve is sleeved on the outer side of the assembled end of the clip sleeve, and the stripping sleeve is movably passed through the sleeve of the injection auxiliary sleeve Between the body and the shaft tube, An inner partition having a buckle is formed in the shaft tube portion, and a limiting stopper is disposed on the inner wall of the shaft tube portion adjacent to the inner partition; an injection pusher group includes a rod body and a pressing cover, and the rod system is worn The utility model is disposed in the injection sleeve group for extending into the medicament bottle to abut the piston in the medicament bottle, the rear end of the rod body extends out of the injection sleeve group, and the pressing cover is assembled, and the pressing cover assembly is connected to the stripping sleeve. Connecting the end portion, the rod body forms at least one interference thread protrusion on the outer peripheral surface of the middle portion of the shaft; and a counting ring, which is set to the injection push in a limited angular range of less than 360 degrees and greater than 0 degrees On the rod body of the rod group, a thread groove and a ratchet groove of a thread groove are formed in the counting ring, and a plurality of interference threads of the forward spiral are formed on the groove wall of the thread groove for the rod body of the injection push rod group When pulling backward, when the interference thread protrusion on the rod body passes through the interference thread in the thread groove, the counting ring can be rotated forward by a predetermined angle to form a plurality of forward single oblique directions on the groove wall of the ratchet groove. a ratchet, the snap fastener providing the injection assisting sleeve abuts against one of the ratchet teeth, and The outer side of the secondary ring forms a stop stop. When the counting ring rotates on the rod body to the stop block contact limit stop, the counting ring can no longer rotate, and the injection push rod group cannot be pulled back, thereby limiting The number of times the counting syringe is reused.

By means of a pre-supplied syringe, it is characterized in that the components of the counter-injection syringe that are irrelevant to injection safety are reused, and the counting between the counting ring, the injection pusher and the injection sleeve group is limited. The creation is made such that when the number of times of repeated use of the counting syringe reaches a predetermined value, the injection putter group can no longer be pulled back, and the number of times the counter-type syringe is repeatedly used is limited. The main purpose of this creation is to set up a medicine bottle with a medicine bottle cover for the needle set, and the injection sleeve set is set outside the medicine bottle, and the sleeve and the medicine bottle are used. The cover card is combined with the stripping sleeve sleeved on the outer side of the clip sleeve and can push the medicine bottle cover to disengage the medicine bottle cover from the clip sleeve, and the injection push rod group has the rod body The sleeve is arranged in the injection sleeve group, so that the counting syringe is disposed after the injection of the sub-packaged medicament bottle, and the needle sleeve is removed together with the medicament bottle, the injection sleeve group, the injection pusher group and the meter The combination of the secondary rings can be reused.

Furthermore, the inventive counting syringe is constructed by matching the thread groove in the counting ring with the interference threading projection on the rod body, and the ratchet groove in the counting ring and the snap ring in the injection auxiliary sleeve. When the ejector bottle is pulled and pulled backwards, the number of repetitions can be automatically accumulated, and when the cumulative number of times reaches the preset number of uses, the counting ring can no longer be rotated, and the injection putter group cannot The pull-back is used to limit the number of times the counter-type syringe is reused, so as to avoid excessive reuse of the counter-type syringe and ensure the safety of use.

10‧‧‧Needle set

11‧‧‧Pill bottle cover

111‧‧‧ Combination end

112‧‧‧Clamping end

1121‧‧‧ snap groove

1122‧‧‧ guiding slope

12‧‧‧ needle cover

121‧‧‧ Socket

122‧‧‧ needle

13‧‧‧Safety jacket

20‧‧‧Injection sleeve set

21‧‧‧Clamp sleeve

211‧‧‧Card end

2111‧‧‧ card hook

212‧‧‧Group end

2121‧‧‧ ring card slot

213‧‧ ‧Baffle Department

22‧‧‧Striped sleeve

221‧‧‧Abutment end

2211‧‧‧ guiding slope

222‧‧‧Connected end

2221‧‧‧Limited flange

223‧‧‧long slot

23‧‧‧Injection auxiliary sleeve

231‧‧‧Sleeve body

232‧‧‧ shaft tube department

2321‧‧‧Fixed section

2322‧‧‧Connection section

2323‧‧‧Internal partition

2324‧‧‧Limit stop

2325‧‧‧ Snaps

2326‧‧‧Connection block

233‧‧‧Auxiliary fins

234‧‧ View window

30‧‧‧Injection putter group

31‧‧‧ rod body

311‧‧‧ shaft

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

3214‧‧‧Tip

322‧‧‧ cover

40‧‧‧ count 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 presently designed syringe.

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

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

FIG. 4 is an exploded perspective view showing the step ring, the rod body and the piston push block in the preferred embodiment of the meter type injector shown in FIG. 3.

Figure 5 is a preferred embodiment of the metered syringe of Figure 1 A schematic view of the rear section.

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

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

Figure 8 is a side cross-sectional view showing the position of the 8-8 cut surface line 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 10-10 cut line shown in Figure 9.

Figure 11 is a schematic view showing the operation of the metering syringe embodiment of Figure 1 for pushing the vial cover in the stripping sleeve.

12 is a perspective view showing the preferred embodiment of the metered syringe of FIG. 1 in which the needle set combined with the medicament bottle is detached from the injection sleeve set.

As shown in FIG. 1 to FIG. 3, a preferred embodiment of the inventive counter-injection syringe is disclosed. The counting syringe comprises a needle set 10, an injection sleeve set 20, and an injection pusher set. 30 and a count ring 40.

As shown in FIG. 3 and FIG. 5, the needle set 10 includes a vial cover 11 and a needle cover 12. The vial cover 11 has a combined end 111 at one end and a hollow card at the other end. The end portion 112 is configured to assemble the bottle end of the fixed medicine bottle 50, and the end portion of the combined end portion 111 forms a perforated end plate portion, and a receiving groove is formed in the engaging end portion 112; The needle cover 12 includes a set body 121 and a needle 122 disposed on the sleeve body 121, and is sleeved on the outer side of the combined 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 body. One end of the 121 is inserted into the medicine bottle 50 through the perforation of the end plate portion of the vial cover 11 and pierced through the closure of the bottle end of the medicine bottle. In the preferred embodiment, the card cover 11 is stuck. A plurality of engaging grooves 1121 are disposed on the joint end portion 112, and the engaging end portion 112 forms a lead-shaped inclined surface 1122 whose outer ring is gradually increased in size at the end of the outer ring wall.

As shown in FIG. 3 and FIG. 5, in the preferred embodiment, the vial cover 11 can form a plurality of anti-slips on the outer peripheral surface of the combined end portion 111, thereby preventing the slip and the needle cover. The inner wall of the sleeve 121 of 12 is in contact.

As shown in FIGS. 3 and 5, the needle set 10 further includes a safety sheath 13 that is detachably sleeved outside the combined end 111 of the vial cover 11 and The needle cover 12 is covered to ensure that the needle 122 is not exposed to protect the person from injury.

As shown in FIG. 2, FIG. 3 and FIG. 5, the injection sleeve set 20 includes a clip sleeve 21, a stripping sleeve 22 and an injection assisting sleeve 23, which can be transparent. a cylinder made of a material, one end of the clip sleeve 21 is a snap end 211, and the other end of the clip sleeve is a joint end 212, and the clip sleeve 21 is sleeved outside the medicament bottle 50 And the engaging end portion 112 of the vial cover 11 is detachably assembled. In the preferred embodiment, the end of the engaging end portion 211 forms a plurality of engaging hooks 2111, and the engaging hooks 2111 The engaging groove 1121 corresponding to the engaging end portion 112 of the vial cover 11 is detachably assembled, and the first sleeve extending inward from the engaging end portion 211 is formed in the clamping sleeve 21 And a second receiving hole extending inwardly from the connecting end portion 212. The inside of the clamping sleeve 21 forms a baffle portion 213 having a through hole between the first receiving hole and the second receiving hole. ,and The first receiving hole is provided with the medicine bottle 50 disposed therein, and the end of the medicine bottle 50 abuts against the baffle portion 213; the outer peripheral surface of the connecting end portion 212 can form the ring card groove 2121.

As shown in FIG. 2, FIG. 3 and FIG. 5, the stripping sleeve 22 has an abutting end 221 at one end and a connecting end 222 at the other end, and the stripping sleeve 22 is slidably sleeved on the card. The abutting end portion 221 is for abutting the engaging end portion 112 of the vial cover 11, peeling the sleeve 22 and being biased to make the engaging end of the vial cover 11 The portion 112 of the clip portion 21 is detached from the engaged state. In the preferred embodiment, the outer edge of the abutting end portion 221 of the stripping sleeve 22 forms a tapered guide toward the outer dimension. The inclined surface 2211, the guiding inclined surface 2211 of the peeling sleeve 22 is in contact with the guiding inclined surface 1122 of the engaging end portion 112 of the vial cover 11, so that the peeling sleeve 22 is applied toward the vial cover 11 In the case of force, the engaging end portions 112 of the vial cover 11 are outwardly expanded by the inclined faces of the respective guiding inclined faces 1122, 2211, and the engaging grooves 1121 on the engaging end portions 112 of the vial cover 11 are made. The latching end portion 211 of the clip sleeve 21 is disengaged from the engaged state. In the preferred embodiment, the plurality of self-joining end portions 222 are formed on the wall of the stripping sleeve 22 toward the abutting end portion 221 . Directional axis The long grooves 223 extend, said connecting end portion 222 forming a plurality of stop flange 2221.

As shown in FIG. 2, FIG. 3 and FIG. 5, the injection assisting sleeve 23 is sleeved outside the assembled end portion 212 of the clip sleeve 21, and the stripping sleeve 22 is movably passed through the injection assisting sleeve 23. In the preferred embodiment, the injection assisting sleeve 23 includes a hollow sleeve body 231 and a shaft tube portion 232 located in the sleeve body 231. One end of the sleeve body 231 is formed. The auxiliary wing piece 233, the outer peripheral wall of the shaft tube portion 232 is connected to the inner wall of the sleeve body 231 by a plurality of connecting blocks 2326. The shaft tube portion 232 has a fastening portion 2321 at one end, and the other end of the shaft tube portion 232 has a protruding sleeve body. 231 has a connecting portion 2322 on the outer side of one end of the auxiliary fin 233. The inner tube partition 2323 has an inner partition 2323 having a spring 2325, and an inner hole is formed in the inner partition 2323. The inner wall of the shaft tube portion 232 is adjacent to the inner wall. The inner partition plate 2323 is provided with a limit stop 2324 which is assembled by the fastening portion 2321 of the shaft tube portion 232 to the assembly end portion 212 of the clip sleeve 21, and the cover sleeve is stripped 22 is axially movable between the sleeve body 231 of the injection auxiliary sleeve 23 and the shaft tube portion 232, and the connecting block 2326 is respectively passed through the corresponding long groove 223 of the stripping sleeve 22, and the injection auxiliary sleeve 23 is provided. There is a viewing window 234 extending radially from the sleeve body 231 to the shaft tube portion 232, the viewing window 234 being adjacent to the limit stop 2324.

As shown in FIG. 2 to FIG. 5, the injection pusher set 30 includes a rod body 31 and a pressing cover 32. The rod body 31 is threaded through the injection assisting sleeve 23, the clip sleeve 21 and the medicament bottle. In the 50, the rod body 31 includes a rod-shaped shaft 311. The shaft 311 passes through the through hole in the baffle portion 213 of the clip sleeve 21 and the inner hole in the inner partition 2323 of the injection auxiliary sleeve 23. At least one interference threaded protrusion 3111 is formed on the outer surface of the middle portion of the shaft 311. One end of the shaft 311 is a piston pushing end, and the piston pushing end can be further connected with a piston pushing block 312 for extending into the medicine bottle. The piston 51 is pushed into the piston 51, and the other end of the shaft 311 is a stop control end 313. The stop control end 313 has a tip 314 having a diameter larger than the diameter of the shaft, and has a plurality of profiles formed on the shaft. The outer peripheral surface of the 311 is adjacent to the stop rib 315 at the end 314, and an axially extending snap is formed between each two adjacent stop ribs 315. The groove 316, the outer peripheral surface of the second end of the shaft 311 forms a circular push plate portion 318 on one side of the stop control end portion 313 toward the middle of the shaft 311, and the shaft 311 is on the push plate portion 318 and the stop rib A movable section 317 is formed between the ends of the 315. In the preferred embodiment, the shaft is spaced apart from the side of the middle portion of the shaft 311 by the limiting plate portion 319.

As shown in FIG. 2, FIG. 3 and FIG. 5, the pressing cover 32 is movably disposed at the stopping control end portion 313 of the rod body 31, and the pressing cover 32 is assembled to the connecting end of the stripping sleeve 22. The pressing portion 32 may be an integrally formed independent member or may be a combination of a plurality of independent members. In the preferred embodiment, the pressing cover 32 has a pressing cover 321 or a further a cover plate 322, a first mounting groove and a second mounting groove are respectively formed on the two sides of the pressing cover 321 . The pressing cover 321 has a partition 3211 between the first mounting groove and the second mounting groove. An inner hole connecting the first mounting groove and the second mounting groove is formed in the 3211, and the pressing cover 321 is formed on the side of the partition 3211 adjacent to the first mounting groove to form a plurality of stop hooks 3212 arranged on the outer periphery of the inner hole. The end of the stop hook 3212 has a hook portion, and the cover seat 321 is pressed and the plurality of stop hooks are axially movably sleeved on the stop control end portion 313 of the rod body 31 of the injection push rod group 30 to stop the rotation. The hook portion of the hook 3212 can be in the movable section 31 between the pusher portion 318 of the injection pusher set 30 and the end of the stop rib 315. 7 is moved between the latching recesses 316, and the cover plate 322 is detachably assembled in the second mounting groove of the pressing cover 321 .

As shown in FIG. 2, FIG. 3 and FIG. 5, in the preferred embodiment, the stripping sleeve 22 forms a plurality of limiting flanges 2221 on the connecting end portion 222, and the pressing cover holders 321 are spaced apart from each other. The plate 3211 is adjacent to the first assembly slot A plurality of tabs 3214 are formed on the side of the stop hook 3212. The tabs 3214 have a spacing between the first mounting slot walls of the pressing cover 321 and the connecting end 222 of the stripping sleeve 22 is inserted therein. The connecting end portion 222 is a space between the first mounting groove wall and the tab 3214 of the pressing cover seat 321 , and the pressing cover seat 321 forms a limiting concave edge 3213 on the wall of the first mounting groove thereof to limit The recessed flange 3213 is provided with the limiting flange 2221 of the connecting end portion 222, and the distance between the limiting flange 2221 and the linear movement is restricted by the limiting recess 3213, so that the stripping sleeve 22 can be connected to the pressing seat 32. Linked and able to move relatively within a limited distance.

As shown in FIG. 2, FIG. 3 and FIG. 5, in the preferred embodiment, the cover 322 is assembled in the pressing cover 321 in a snap-fit manner, wherein the pressing cover 321 is opposite to the partition 3211 thereof. A plurality of fastening holes are disposed on the outer periphery of the inner hole, and a plurality of fixing hooks are disposed on the cover 322. The cover plate 322 is disposed in the second mounting groove of the pressing cover 321 and is respectively inserted with the corresponding hooks. The hole is positioned to fix the cover 322 in the pressing cover 321 .

As shown in FIG. 2 to FIG. 5, the counting ring 40 is a circular annular body which is rotatably disposed in a limited angular range on the rod body 31 of the injection pusher group 30, which is limited. The angle of the angle is less than 360 degrees and greater than 0 degrees. 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. The display ring surface 41 corresponds to the injection auxiliary sleeve 23. View window 234.

As shown in FIG. 2 to FIG. 5, the counting ring 40 defines a thread groove 43 and a ratchet groove 44 of a communicating thread groove 43. The groove wall of the thread groove 43 forms a plurality of parallel helical interference threads. The interference threaded projection 3111 for the rod 31 of the injection pusher set 30 corresponds to the snail In the interference thread in the groove 43, the counting ring 40 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 44, and the injection auxiliary sleeve 23 is provided. The snap ring 2325 abuts against one of the ratchet teeth 44, so that the counting ring 40 can only rotate one-way on the rod 31 and cannot rotate in the reverse direction. The number of teeth of the single oblique ratchet is determined according to the The number of repetitions of the counting syringe setting is determined, and the range and size of the ratchet distribution in the ratchet groove 44 are set by the finite angle of the 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, and is a distance (ie, one grid) for rotating a single oblique ratchet.

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 rod body 31 to the limit stop of the rotation stop block 45. At block 2324, the counting ring 40 can no longer be rotated, so that the injection pusher set 30 can no longer be pulled back.

As shown in FIG. 5, when the creative counting syringe is used, the sleeve cover 11 of the needle set 10 is sleeved on the bottle end of the medicine bottle 50 containing the medicament, and secondly, the injection sleeve group is set. 20. The combination of the injection pusher set 30 and the counting ring 40 is sleeved on the outer side of the medicament bottle 50, wherein the medicament bottle 50 is inserted into the clip sleeve 21 of the injection sleeve set 20, and the vial cover is positioned. The engaging end portion 112 of the latching portion 112 is engaged with the engaging end portion 211 of the clip sleeve 21, and the rod body 31 of the injection pusher group 30 extends into the medicine bottle 50, and the piston pushing block 312 at the front end of the rod body 31 is abutted. The piston 51 in the vial 50 is connected.

As shown in FIG. 5 to FIG. 8, at the time of injection, the user first removes the safety cover 13 of the needle set 10, and pierces the human body with the needle 122. The injection assisting sleeve 23 is fixed by a finger, and the pressing cover 32 of the injection pusher group 30 is pressed, and the peeling sleeve 22 is pushed forward by the pressing cover 32, and is pushed forward to the pushing plate portion 318 of the rod body 31. The force pushes the injection pusher group 30 to move the liquid medicine in the medicine bottle 50 to the human body via the needle 51 through the needle 51. During the injection process, the stop hook 3212 in the pressing cover 32 moves to the rod body. At 31, the movable portion 317 of the stop control end portion 313 is relatively rotatable between the pressing cover 32 and the rod body 31, and the rod body 31 is a direction free body. When the interference thread projection 311 on the rod body 31 passes through the meter At the time of the secondary ring 40, since the single oblique ratchet in the ratchet groove 44 of the counting ring 40 is restricted by the latch 2324 in the injection assisting sleeve 23, the rod body 31 is along the counting ring 40. The thread groove 43 is slid over.

After the injection is completed, as shown in FIG. 6 to FIG. 8 , the user covers the safety cover 13 to the outer side 3 of the needle set 10 , and then pulls the rod 31 and the stripping sleeve 22 backward through the pressing cover 32. The stopping hook 3212 of the pressing cover 32 is moved to the locking groove 316 between the stopping ribs 315 of the stopping control end 313 of the rod 31, so that the rod 31 can not rotate and can only move linearly, and When the interference of the threaded projection 3111 on the rod 31 passes through the interference thread of the thread groove 43 in the counting ring 40, the single oblique ratchet in the ratchet groove 44 of the counting ring 40 is the spring buckle in the injection auxiliary sleeve 23. The 2324 limit, so that the counting ring 40 is rotated one space in the forward direction.

As shown in FIG. 11, when the medicine bottle 50 is removed, the user sleeves the safety cover 13 to the outside of the combined end portion 111 of the vial cover 11, and covers the needle cover 12, and then presses the cover. 32, the stripping sleeve 22 is pushed forward toward the vial cover 11, and the inclined end faces of the inclined end faces 1122, 2211 are mutually inclined by the engaging end portions 112 of the stripping sleeve 22 and the vial cover 11 Cooperating, the engaging end portion 112 of the vial cover 11 is outwardly expanded, and the engaging groove 1121 on the engaging end portion 112 of the vial cover 11 is disengaged from the engaging end portion 211 of the clip sleeve 21 In the engaged state, at this time, as shown in FIG. 12, the user can remove the needle set 10 together with the used medicine bottle 50 from the injection sleeve set 20, and remove the needle set 10 and the medicine bottle 50. Based on safety, the components that are discarded are not reused, and the combination of the injection sleeve set 20, the injection pusher set 30 and the counting ring 40 can be reused.

As shown in FIG. 6 to FIG. 8, when the combination of the counting sleeve set 20, the injection pusher set 30 and the counting ring 40 is reused a predetermined number of times, it is necessary to discard the whole based on the safety of use, thereby avoiding excessive repetition. In use, the user pulls the rod 31 backward by pressing the cover 32 each time, and the interference thread of the thread groove 43 in the counting ring 40 is used by the interference screw 3111 on the rod 31 of the linear motion. The counting ring 40 is rotated in the forward direction by a predetermined angle. When it is repeatedly used for a predetermined number of times, the stop block 45 on the counting ring 40 contacts the limit stop 2324 of the injection assisting sleeve 23, so that the counting ring 40 is made. It is no longer possible to rotate, and the injection pusher group 30 is blocked by the interference thread projection 3111 of the rod body 31 from the outer side of the front end of the counting ring 40, and can no longer be pulled back. On the other hand, the marking line 42 of the outer circumferential surface of the counting ring 40 corresponds to The viewing window 234 is used to prompt the user that the counting syringe has reached the limit of the number of uses, and the counting syringe should be discarded as a whole.

10‧‧‧Needle set

11‧‧‧Pill bottle cover

111‧‧‧ Combination end

112‧‧‧Clamping end

1121‧‧‧ snap groove

1122‧‧‧ guiding slope

12‧‧‧ needle cover

121‧‧‧ Socket

122‧‧‧ needle

13‧‧‧Safety jacket

20‧‧‧Injection sleeve set

21‧‧‧Clamp sleeve

211‧‧‧Card end

2111‧‧‧ card hook

212‧‧‧Group end

2121‧‧‧ ring card slot

22‧‧‧Striped sleeve

221‧‧‧Abutment end

222‧‧‧Connected end

223‧‧‧long slot

23‧‧‧Injection auxiliary sleeve

231‧‧‧Sleeve body

232‧‧‧ shaft tube department

2326‧‧‧Connection block

233‧‧‧Auxiliary fins

234‧‧ View window

30‧‧‧Injection putter group

31‧‧‧ rod body

311‧‧‧ shaft

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

322‧‧‧ cover

40‧‧‧ count ring

41‧‧‧ display torus

42‧‧‧ marking line

43‧‧‧Thread groove

44‧‧‧ ratchet groove

45‧‧‧stop stop

50‧‧‧Pharmaceutical bottles

Claims (10)

A counting type syringe comprises: a needle head set comprising a medicine bottle cover, a needle cover and a safety sheath, the medicine bottle cover has a combined end at one end and a engaging end at the other end The combination end is configured to assemble and fix a bottle end of a medicine bottle, the needle sleeve comprises a set body and a needle disposed on the sleeve body, and the sleeve is sleeved on the combined end of the medicine bottle cover, the needle It is located at one end of the sleeve for piercing into the medicament bottle through the cover of the medicine bottle, and the safety sheath is detachably sleeved on the outer side of the medicine bottle cover, and the needle cover is wrapped inside; an injection sleeve group, The utility model comprises a clamping sleeve, a stripping sleeve and an injection auxiliary sleeve, wherein the clamping sleeve has a clamping end at one end and a connecting end at the other end, and the clamping sleeve is sleeved on the medicament bottle The outer side is detachably assembled with the engaging end portion and the engaging end portion of the vial cover; the stripping sleeve has an abutting end at one end and a connecting end at the other end, and the stripping sleeve is slidable The grounding sleeve is sleeved on the outer side of the clip sleeve, and the abutting end portion abuts the engaging end portion of the medicine bottle sleeve cover, so that the stripping sleeve can be pushed by the force The engaging end portion of the cover is disengaged from the engaging end portion of the clip sleeve; the injection auxiliary sleeve comprises a hollow sleeve body and a shaft tube portion located in the sleeve body, and the sleeve body is formed The auxiliary fin is sleeved on the outer side of the assembled end of the clip sleeve, and the stripping sleeve is movably passed between the sleeve body of the injection auxiliary sleeve and the shaft tube, and is formed in the shaft tube portion An inner baffle having a buckle, and a limiting block is disposed on the inner wall of the shaft tube portion adjacent to the inner partition; an injection pusher set includes a rod body and a pressing cover, and the rod system is disposed on the injection sleeve In the group, the piston is inserted into the medicine bottle to abut the piston in the medicine bottle, the rear end of the rod body extends out of the injection sleeve group, and the pressing cover is assembled, and the cover is pressed Forming a connecting end portion of the stripping sleeve, the rod body forming at least one interference thread protrusion on the outer peripheral surface of the middle portion of the shaft; and a counting ring capable of being within a limited angle range of less than 360 degrees and greater than 0 degrees Rotatingly arranged on the rod body of the injection pusher group, a thread groove and a ratchet groove of a thread groove are formed in the counting ring, and a plurality of interference threads of the forward spiral are formed on the groove wall of the thread groove for When the rod of the injection pusher group is pulled backward, when the interference thread protrusion on the rod body passes through the interference thread in the thread groove, the counting ring can be rotated forward by a predetermined angle on the groove wall of the ratchet groove. Forming a plurality of forward single oblique ratchets, the snap fastener providing the injection assisting sleeve abuts against one of the ratchet teeth, and the outer side of the counting ring forms a stop stop block, and the counting ring is connected to the rod When the body rotates in the forward direction to the stop stop contact limit stop, the counting ring can no longer rotate, and the injection pusher group cannot be pulled back, thereby limiting the number of times the counting syringe is repeatedly used. The counter-type syringe according to claim 1, wherein a plurality of engaging grooves are disposed on the engaging end portion of the vial cover, and the engaging end portion forms a ring outward at the end of the outer ring wall. a gradual increase of the guide bevel; the end of the snap end of the clip sleeve forms a plurality of snap hooks, and the snap hooks are respectively detachable from the engaging slots of the snap end of the vial cover a snap-fit combination; a peripheral edge of the abutting end outer ring of the stripping sleeve forms a tapered inclined surface with a ring facing outward, and the guiding inclined surface of the stripping sleeve is in contact with the guiding inclined surface of the engaging end of the vial cover So that the stripping sleeve can be applied to the direction of the medicine bottle cover, and the corresponding guiding surface is pushed, so that the engaging end of the medicine bottle cover is expanded outward, so that the medicine bottle cover is engaged The engagement hook of the slot and the clip sleeve is out of engagement. The counter-type syringe according to claim 1, wherein the injection assisting sleeve is provided with a viewing window extending radially from the sleeve body to the shaft tube portion, and the viewing window is adjacent to the limiting stopper. The outer circumferential surface of the secondary 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 counter-type syringe according to claim 2, wherein the injection assisting sleeve is provided with a viewing window extending radially from the sleeve body to the shaft tube portion, and the viewing window is adjacent to the limiting stopper. The outer circumferential surface of the secondary 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 counter-type syringe according to any one of claims 1 to 4, wherein the rear end of the shaft of the injection pusher set has a stop control end, and the stop control end has a diameter larger than the rod The end of the body diameter has a plurality of ribs formed at a position adjacent to the outer peripheral surface of the shaft, and an axially extending engaging groove is formed between each adjacent rib, and the outer peripheral surface of the shaft is stopped. The rotation control end portion forms a push plate portion toward one side of the middle of the shaft body, and the shaft body forms a movable portion between the push plate portion and the end portion of the stop rib; the pressing cover has a pressing cover seat, and the pressing cover seat is pressed The utility model has a partition plate, and a plurality of annularly arranged stop hooks are formed on a side of the partition plate adjacent to the rod body, and the end of the stop hook has a hook portion, and the cover seat is axially movable with the plurality of stop hooks Connected to the stop control end of the rod of the injection pusher group, the hook portion of the stop hook can move between the movable section of the rod of the injection pusher set and the engaging groove. The reciprocating syringe of claim 5, wherein the stripping sleeve forms a plurality of limiting flanges on the connecting end portion, and the pressing cover is seated on Forming a plurality of tabs on a side of the partition adjacent to the first mounting groove with respect to the periphery of the stop hook, and a space between the tab and the first mounting groove wall of the pressing cover, wherein the connecting end of the stripping sleeve is inserted therein The pressing cover seat forms a limiting concave edge on the wall of the first fitting groove, and the limiting concave edge is engaged with the limiting flange to make the stripping sleeve assembly and the pressing seat to be interlocked. The counter-type syringe according to claim 6, wherein the pressing cover seat forms a first fitting groove and a second fitting groove on both sides of the partition plate, and the partition plate forms a first fitting groove and a first connecting groove. The inner hole of the two mounting groove, the stop hook is located in the first assembly slot, the partition is provided with a plurality of snap holes on the outer periphery of the inner hole, and the cover is provided with a plurality of fixed hooks, and the second cover is pressed A cover plate is disposed in the assembly slot, and a plurality of fixed hooks are formed on the cover plate, and the fixed hooks are respectively disposed through the corresponding snap holes. The counter-type syringe according to claim 7, wherein the clip sleeve has a first receiving hole extending inwardly from the engaging end portion and a second extending inwardly from the assembled end portion. Having a receiving hole, the inside of the caliper sleeve forms a baffle portion having a through hole between the first accommodating hole and the second accommodating hole, and the drug receiving bottle is provided in the first accommodating hole, and the end of the medicinal bottle Abutting against the baffle portion; forming an inner hole in the inner partition of the injection auxiliary sleeve; the rod of the injection pusher group passes through the through hole of the baffle portion of the clamping sleeve An inner hole in the inner partition of the injection auxiliary sleeve is connected with a piston push block at the front end of the shaft, and the piston push block contacts the piston extending into the medicine bottle. The reciprocating syringe according to claim 5, wherein the cylindrical wall of the stripping sleeve forms a plurality of long grooves extending axially from the connecting end toward the abutting end; The outer peripheral wall of the shaft tube portion of the injection auxiliary sleeve is connected to the inner wall of the sleeve body by a plurality of connecting blocks, the shaft tube portion has a fastening portion at one end, and the other end has a connecting portion extending outside the rear end of the sleeve body, the shaft An inner hole is formed in the inner partition of the pipe portion, and the injection auxiliary sleeve is assembled with the fixed end portion of the shaft tube portion to the assembled end portion of the clip sleeve, and the connecting block respectively passes through the corresponding stripping sleeve Long slot. The counter-type syringe according to claim 8, wherein the wall of the stripping sleeve forms a plurality of long grooves extending axially from the connecting end toward the abutting end; the injection assisting sleeve The outer peripheral wall of the shaft tube portion is connected to the inner wall of the sleeve body by a plurality of connecting blocks, the shaft tube portion has a fastening portion at one end, and the other end has a connecting portion extending outside the rear end of the sleeve body, and the inner partition of the shaft tube portion An inner hole is formed, and the injection auxiliary sleeve is assembled with the fastening portion of the shaft tube portion to the assembly end portion of the clamping sleeve, and the connecting block respectively passes through the corresponding long groove in the sleeve.