CN211068478U - Medical injection device with replaceable medicine bottle - Google Patents
Medical injection device with replaceable medicine bottle Download PDFInfo
- Publication number
- CN211068478U CN211068478U CN201921055036.4U CN201921055036U CN211068478U CN 211068478 U CN211068478 U CN 211068478U CN 201921055036 U CN201921055036 U CN 201921055036U CN 211068478 U CN211068478 U CN 211068478U
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- push rod
- injection device
- medical injection
- transmission
- clutch
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- 239000003814 drug Substances 0.000 title claims abstract description 52
- 238000010999 medical injection Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 55
- 210000003205 muscle Anatomy 0.000 claims description 14
- 238000010862 gear shaping Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 22
- 239000007924 injection Substances 0.000 description 22
- 230000009471 action Effects 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to a medical injection device of removable medicine bottle, including urceolus and cap for brush, the one end of urceolus is provided with detachable cartridge, be provided with removable standard card formula medicine bottle in the cartridge, the inside one end that is close to the cartridge of urceolus is provided with fixed cover, the inside axial displacement of fixed cover is provided with the push rod seat, the inside of push rod seat is provided with can be with the tip engaged with drive ring of transfer line, but axial slip's ratchet ring has been cup jointed in the outside of transfer line, the one end terminal surface and the inside one-way meshing of urceolus of ratchet ring, the other end axial of ratchet ring is provided with first spring, the one end axial of push rod seat is provided with the second spring that withstands with the urceolus, the one end of push rod is passed the push rod seat and is. The utility model discloses simple structure adopts brand-new push rod to return drive mechanism, can realize used repeatedly.
Description
Technical Field
The utility model relates to an injection pen field especially relates to a medical injection device of removable medicine bottle.
Background
An injection pen is a medical device widely used in clinical medicine for drug injection.
At present, a disposable sterile injector is mainly used for medicine injection in the market, but the injection process needs hospital treatment and is operated and injected by professional personnel, and the operation convenience is not suitable for self management of most chronic disease patients. At present, the purely mechanical injection pen has the optimal safety and reliability in the structures of screw transmission, clutch transmission, tactile feedback and the like in the process of realizing accurate distribution of medicines.
The existing injection pen has poor universality, and a push rod of the existing injection pen cannot be withdrawn after the medicine is injected, so that the injection pen is disposable, the existing injection pen is expensive, and the disposable injection pen is a small expense for a patient needing injection for a long time.
At present, injection pens capable of being used repeatedly exist in the market, the price is high, the service life is short, the operation of pushing the push rod back is complex, the operation is not good, the push rod is easy to block, the touch and auditory prompting functions are not available during injection, and the using effect is not good.
Disclosure of Invention
The utility model aims to solve the technical problem that a medical injection device of removable medicine bottle is provided, simple structure adopts brand-new push rod to return drive mechanism, can realize used repeatedly.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a medical injection device of removable medicine bottle, includes urceolus and cap for brush, the inside outside-in of urceolus arranged dose tube, differential rod and transfer line in proper order, the inside outside-in of dose tube and the inside wall threaded connection of urceolus and the one end of dose tube in be provided with the clutch, the both ends of clutch link mutually with the one end of dose tube and the one end of differential rod can one-way transmission respectively, the one end of clutch install trigger button, the inside axial of transfer line be provided with threaded push rod, the one end of urceolus be provided with detachable medicine storehouse, the medicine storehouse in be provided with removable standard card formula medicine bottle, the inside one end that is close to the medicine storehouse of urceolus be provided with fixed cover, the inside axial displacement of fixed cover be provided with the push rod seat, the inside of push rod seat be provided with can with the tip looks engaged with of transfer line drive ring, the outer side of the transmission rod is sleeved with a ratchet ring capable of axially sliding, one end face of the ratchet ring is meshed with the inner part of the outer barrel in a one-way mode, the other end of the ratchet ring is axially provided with a first spring, one end of the push rod seat is axially provided with a second spring pressed against the outer barrel, and one end of the push rod penetrates through the push rod seat and extends into the standard card type medicine bottle to be connected with the push block.
As a supplement to the technical solution of the present invention, the inner part of the outer cylinder and the dose cylinder between which one end close to the trigger button is provided with a threaded sleeve.
Furthermore, the fixed cover be cylindrical, its one end is provided with a plurality of and detains the strip and detain mutually with the inside wall of urceolus fixedly, the inside wall middle part of fixed cover evenly be provided with a plurality of direction muscle round the circumference.
Further, fixed cover other end both sides lateral wall on central symmetry be provided with and be curved direction catching groove, the inside wall of fixed cover on be provided with the arc guide way that is linked together with the direction catching groove, the inside wall of fixed cover on be located the below of direction catching groove and be provided with the constant head tank, one end lateral wall of medicine storehouse on both sides be provided with the joint arch that matches with the direction catching groove, the bellied one side of joint be provided with the location arch that matches with the constant head tank.
Further, the inside of push rod seat be provided with well seat platform, the lateral wall of push rod seat round the circumference be provided with a plurality of and extend to well seat platform and with the guide way that the direction muscle matches, the inside wall of push rod seat on be located the position between the adjacent guide way and be provided with spacing muscle, the driving ring set up in well seat bench side middle part and carry out the axial spacing by spacing muscle, the middle part of well seat platform be provided with the screw hole that supplies the push rod to pass.
Furthermore, the transmission ring is disc-shaped, one end of the transmission ring and the end part of the transmission rod are respectively provided with a circle of gear shaping teeth which can be meshed with each other, and convex strips embedded into axial grooves at two sides of the push rod (9) are symmetrically arranged in an inner hole of the transmission ring.
Furthermore, axial guide grooves are symmetrically formed in the side walls of the two sides of the transmission rod, and guide protrusions embedded into the axial guide grooves are arranged in the inner hole of the ratchet ring and on the inner side wall of one end of the differential rod.
Furthermore, one end of the differential rod is internally provided with a circle of first one-way convex teeth, one end of the dosage cylinder is internally provided with a circle of second one-way convex teeth, and the outer sides of the two ends of the clutch are respectively provided with a first elastic sheet and a second elastic sheet which are matched with the first one-way convex teeth and the second one-way convex teeth.
Furthermore, the inside of the trigger button is provided with a sleeve connection column which is sleeved on the upper part of the clutch, the upper end of the clutch is a pointed head part, the pointed head part is propped against the top of the inner side of the sleeve connection column, the inner side wall of the lower end of the sleeve connection column is provided with a circle of limiting groove, and the corresponding position of the outer side of the clutch is provided with a circle of limiting convex ring.
Furthermore, a circle of limiting steps are arranged in the outer barrel and close to the fixed sleeve, inner holes of the limiting steps are embedded into a circle of limiting concave sections on the outer side of the transmission rod, and one end of each limiting step is meshed with one end of the ratchet ring in a one-way mode.
Has the advantages that: the utility model relates to a medical injection device with replaceable medicine bottle, which has compact and reasonable structure, adopts a brand new push rod return structure and a convenient and detachable medicine bin, so that the medicine bottle can be more conveniently replaced, the push rod return can be realized when the medicine bin is replaced, the blockage and the interference can not occur when the medicine bin is replaced, the operation is very simple, and the injection pen can be repeatedly used; the threaded sleeve is arranged, so that excessive abrasion of the outer cylinder and the dosage cylinder when the injection pen is used repeatedly can be reduced, and the service life of the injection pen is prolonged; the injection and dosage adjustment have the touch and auditory prompting functions, the use sense is good, and the popularization value is good.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the structure of the half-section of the present invention;
FIG. 3 is an enlarged structural view taken at A in FIG. 2;
FIG. 4 is an enlarged structural view at B of FIG. 2;
fig. 5 is a three-dimensional structure view of the fixing sleeve of the present invention;
fig. 6 is a half-section structure diagram of the fixing sleeve of the utility model;
fig. 7 is a perspective view of the dosage drum of the present invention;
fig. 8 is a perspective view of the differential lever of the present invention;
fig. 9 is a three-dimensional structure view of the push rod seat of the present invention;
fig. 10 is a three-dimensional structure view of the medicine bin of the present invention;
fig. 11 is a perspective view of the present invention;
fig. 12 is a perspective view of the driving ring of the present invention.
The figure is as follows: 1. a pen cap; 2. an outer cylinder; 3. a standard cassette vial; 4. a trigger button; 5. a clutch; 6. a limiting groove; 7. a dosage cylinder; 8. a differential lever; 9. a push rod; 11. a ratchet ring; 12. fixing a sleeve; 13. a push rod seat; 14. a medicine bin; 15. a limiting step; 16. a second spring; 17. a first spring; 18. a push block; 19. a drive ring; 20. a threaded sleeve; 21. a transmission rod; 51. a second elastic sheet; 53. a tip portion; 54. a first elastic sheet; 55. a limiting convex ring; 71. a second unidirectional convex tooth; 81. a first unidirectional convex tooth; 82. a guide projection; 91. an axial groove; 121. a guide buckle slot; 122. buckling strips; 123. positioning a groove; 124. an arc-shaped guide groove; 125. a guide rib; 131. a middle seat stand; 132. limiting ribs; 133. a guide groove; 134. a threaded hole; 141. clamping the bulges; 142. positioning the projection; 211. an axial guide groove; 212. gear shaping; 213. a raised strip; 214. and limiting the concave section.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
As shown in fig. 1-12, the technical solution adopted by the present invention to solve the technical problem is: the utility model provides a medical injection device of removable medicine bottle, includes urceolus 2 and cap for brush 1, the inside outside-in of urceolus 2 arranged dose tube 7, differential pole 8 and transfer line 21 in proper order, the lateral wall of dose tube 7 and the inside wall threaded connection of urceolus 2 and the one end of dose tube 7 in be provided with clutch 5, both ends of clutch 5 can link together with the one end of dose tube 7 and the one end of differential pole 8 with one-way transmission ground respectively, one end of clutch 5 install trigger button 4, the inside axial of transfer line 21 be provided with threaded push rod 9, the one end of urceolus 2 be provided with detachable medicine storehouse 14, medicine storehouse 14 in be provided with removable standard cassette medicine bottle 3, the inside one end that is close to medicine storehouse 14 of urceolus 2 be provided with fixed cover 12, the inside axial displacement of fixed cover 12 be provided with push rod seat 13, the inside of the push rod seat 13 is provided with a transmission ring 19 which can be meshed with the end part of the transmission rod 21, the outer side of the transmission rod 21 is sleeved with a ratchet ring 11 which can axially slide, one end surface of the ratchet ring 11 is unidirectionally meshed with the inside of the outer cylinder 2, the other end of the ratchet ring 11 is axially provided with a first spring 17, one end of the push rod seat 13 is axially provided with a second spring 16 which is propped against the outer cylinder 2, and one end of the push rod 9 penetrates through the push rod seat 13 and extends into the standard cassette type medicine bottle 3 to be connected with the push block 18.
The utility model discloses a disposable pen, including urceolus 2, dose barrel 7, the one end that is close to trigger button 4 between inside and the dose barrel 7 of urceolus 2 be provided with threaded sleeve 20, the used frequency that used repeatedly the pen has great number of times, urceolus 2 and dose barrel 7 have certain wearing and tearing, urceolus 6 and threaded sleeve 7's structure can effectively alleviate the wearing and tearing volume, 2 inner hole wall of urceolus has bellied draw-in groove to be connected with threaded sleeve 20's outer wall draw-in groove when threaded sleeve 20 installs, make threaded sleeve can not rotate, and threaded sleeve 20's outer wall draw-in groove is a discontinuous draw-in groove, he is connected with outer tube 2's inner hole wall draw-in groove, their structure is a.
The thread sleeve 20 is internally provided with a spiral convex rib matched with a spiral groove on the outer side of the dosage barrel 7, and the spiral convex rib and the spiral groove are trapezoidal transmission threads which have good rotating and moving functions and cannot generate blocking and self-locking during thread matching transmission.
Fixed cover 12 be cylindrical, the inside wall that its one end was provided with a plurality of profile 122 and urceolus 2 is detained mutually fixedly, the inside wall middle part of fixed cover 12 evenly be provided with a plurality of direction muscle 125 around the circumference, direction muscle 125 can lead to the axial displacement of push rod seat 13, profile 122 enables fixed cover 12 and installs fast.
Fixed cover 12 other end both sides lateral wall on central symmetry be provided with and be curved direction catching groove 121, the inside wall of fixed cover 12 on be provided with the arc guide way 124 that is linked together with direction catching groove 121, the inside wall of fixed cover 12 on lie in the below of direction catching groove 121 and be provided with constant head tank 123, the one end lateral wall of medicine storehouse 14 on both sides be provided with the protruding 141 of joint that matches with direction catching groove 121, the protruding 141 one side of joint be provided with the protruding 142 of location that matches with constant head tank 123, in the time of the use, insert the one end of fixed cover 12 with medicine storehouse 14, then rotate the protruding 141 of joint and can make progress certainly along arc guide way 124 to block into direction catching groove 121 at last, the protruding 141 of joint also can block into constant head tank 123 in, make medicine storehouse 14 firm not hard up.
The inside of push rod seat 13 be provided with well seat platform 131, the lateral wall of push rod seat 13 be provided with a plurality of around the circumference and extend to well seat platform 131 and with the guide slot 133 that matches of direction muscle 125, the inside wall of push rod seat 13 on lie in the position between the adjacent guide slot 133 and be provided with spacing muscle 132, driving ring 19 set up in well seat platform 131 upside middle part and carry out axial spacing by spacing muscle 132, the middle part of well seat platform 131 be provided with the screw hole 134 that supplies push rod 9 to pass, the effect of spacing muscle 132 just makes the unable axial displacement of driving ring 19, can only the rotation, screw hole 134 can the axial propulsion when making push rod 9 rotate.
The drive ring 19 is disc-shaped, a circle of mutually meshed gear teeth 212 are arranged at one end of the drive ring 19 and the end part of the drive rod 21, protruding strips 213 embedded into axial grooves 91 at two sides of the push rod 9 are symmetrically arranged in an inner hole of the drive ring 19, the push rod seat 13 can axially move after the medicine bin 14 is disassembled, the gear teeth 212 between the drive ring 19 and the drive rod 21 are disengaged, then the push rod 9 can be retracted, when the gear teeth 212 between the drive ring 19 and the drive rod 21 are meshed, the drive rod 21 can drive the drive ring 19 to rotate, the drive ring 19 can drive the push rod 9 to rotate through the protruding strips 213 and the axial grooves 91, and the axial movement of the push rod 9 is realized.
One end of the differential rod 8 is internally provided with a circle of first one-way convex teeth 81, one end of the dosage drum 7 is internally provided with a circle of second one-way convex teeth 71, and the outer sides of the two ends of the clutch 5 are respectively provided with a first elastic sheet 54 and a second elastic sheet 51 which are matched with the first one-way convex teeth 81 and the second one-way convex teeth 71.
Trigger button 4's inside be provided with and cup joint the cover on clutch 5 upper portion and connect the post, clutch 5's upper end be sharp head 53, sharp head 53 with cup joint the inboard top of post and withstand, the lower extreme inside wall of cup joint the post on be provided with round spacing recess 6, the corresponding position in outside of clutch 5 be provided with round spacing bulge loop 55, the bellied cambered surface is made to trigger button 4's top surface, the button that the off-centre of button brought when reducing the press operation cuts the drag with the dose barrel inner wall, the sharp head 53 of clutch inner column contacts with trigger button 4's cup joint the post top point, makes trigger button 4 rotatory on this fulcrum, reduces the drag, the spacing bulge loop 55 of clutch periphery prevents trigger button 4 to drop with trigger button 4's spacing recess 6 cooperation.
The inner part of the outer cylinder 2 is provided with a circle of limiting steps 15 at a position close to the fixing sleeve 12, the inner hole of each limiting step 15 is embedded into a circle of limiting concave sections 214 on the outer side of the transmission rod 21, one end of each limiting step 15 is meshed with one end of the ratchet ring 11 in a one-way mode, the transmission rod is recessed into a circle 15, the limiting concave sections 214 and the limiting steps 15 are matched to prevent the transmission rod 21 from falling under the action of spring pressure and self gravity, and the inserted teeth 212 at the end part of the transmission rod 21 and the inserted teeth 212 of the transmission ring 19 interfere to generate resistance, so that the interference is blocked when the medicine bottle back pressure push rod 9 is replaced.
As an embodiment of the present invention:
specific operations include dose adjustment, dose recall, injection, and vial replacement.
Dose adjustment: when in use, when dose setting is carried out, the dose cylinder 7 is rotated in the forward direction, the second one-way convex teeth 71 on the dose cylinder 7 act on the second elastic sheet 51 of the clutch 5, the clutch 5 does not rotate due to one-way engagement, the dose cylinder 7 is in screw connection with the outer cylinder 2, so the dose cylinder 7 can move axially, namely, the dose cylinder 7 moves axially towards one end where the trigger button 4 is located, the clutch 5 moves axially backwards to push the differential rod 8 and the trigger button 4 to move axially backwards, the first elastic sheet 54 and the first one-way convex teeth 81 of the clutch 5 are also in one-way engagement, so the differential rod 8 can not be driven to rotate, the differential rod 8 does not rotate, the clutch 5 does not rotate, but the cooperation between the second elastic sheet 51 and the second one-way convex teeth 71 can generate audible indication, meanwhile, the dose cylinder 7, the trigger button 4 and the differential rod 8 push out the outer cylinder 2 towards the rear end, and finishing the metering setting.
And dose returning is carried out, the dose cylinder 7 is rotated reversely, namely the dose cylinder 7 is rotated anticlockwise, the second one-way convex tooth 71 is matched with the second elastic sheet 51 of the clutch 5 to drive the clutch 5 to rotate, but the push block 18 gives reverse acting force to the push rod 9, so that the push rod 9 cannot rotate and axially leftwards move, the transmission rod 21 also does not transmit and cannot drive the differential rod 8 to rotate, the differential rod 8 does not move, the first elastic sheet 54, which is contacted with the differential rod 8, of the clutch 5 generates audible indication on the first one-way convex tooth 81 on the differential rod 8, the dose cylinder 7 axially leftwards moves to drive the trigger button 4, the differential rod 8 leftwards moves, and the dose returning is realized.
And (3) injection: when the trigger button 4 is pressed, the dosage barrel 7 is pressed to move axially forwards to rotate reversely, the second one-way convex tooth 71 of the dosage barrel 7 drives the clutch 5 to rotate, at this time, the clutch 5 and the first elastic sheet 54 matched with the differential rod 8 cannot drive, but the second one-way convex tooth is pressed, so that the ridge-shaped convex tooth at one end of the differential rod 8 is meshed with the axial convex tooth on the dosage barrel 7, the rotation of the dosage barrel 7 drives the differential rod 8 to rotate reversely, the rotation of the differential rod 8 drives the transmission rod 21 to rotate, and as the inserted tooth 212 at the end of the transmission rod 21 is meshed with the inserted tooth 212 on the transmission ring 19, the transmission ring 21 drives the transmission ring 19 to rotate, the transmission ring 19 drives the push rod 9 to rotate, and the push rod 9 and the push rod seat 13 realize injection.
And (3) replacing the medicine bottle: the medicine bin 14 is rotated leftwards, the medicine bin 14 is separated from the fixed sleeve 12, the push rod seat 13 moves towards the opening direction of the medicine bin 14 under the action of the second spring 16, the sliding structure of the push rod seat 13 is matched with the fixed sleeve 12 to make linear displacement, the transmission ring 19 is pressed in the push rod seat 13 through the limiting rib 132 structure of the push rod seat 13, and the gear shaping 212 at one end of the transmission ring 19 is separated from the gear shaping 212 at one end of the transmission rod 21 along with the movement of the push rod seat 13. The distance of pushing away is set by a limit clamping groove on the push rod seat 13, and the distance of pushing away is ensured to be larger than the opening distance of the transmission ring 19 and the transmission rod 21 which are put into the gear shaping 212 without interference. At this time, the push block 18 is pressed, the push sheet 18 is connected with the push rod 9 through a snap structure, the push rod 9 rotates towards the outer barrel 2 through the threaded hole 134 of the push rod seat 13, the axial groove 91 on the push rod 9 is connected with the protruding strip 213 of the driving ring 21, at this time, the gear shaping 212 of the driving ring 19 is in a disengaged state with the gear shaping 212 of the driving rod 21, the push rod 9 rotates to drive the driving ring 19 to rotate, the driving ring 19 does not generate axial movement, and the axial groove 91 on the push rod 9 simultaneously moves in a matching manner with the protruding strip 213 on the driving ring 19 until the push block 18 is pressed to the bottom.
Conversely, the medicine bin 14 is screwed, the standard cassette medicine bottle 3 is arranged in the medicine bin 14, the end face of the standard cassette medicine bottle 3 presses the end face of the push rod seat 13, the push rod seat 13 moves and compresses the second spring 16 to drive the transmission ring 19 to move, the gear shaping 212 at one end of the transmission ring 19 is meshed with the gear shaping 212 at one end of the transmission rod 21 to form a transmission whole, when the injection pen is injected, the transmission rod 21 rotates, the ratchet ring 11 is driven to rotate through the axial guide groove 211 on the transmission rod 21, and the ratchet ring 11 can bounce and rotate under the action of the spring and is matched with the limit step 15 to generate touch and auditory prompts.
The utility model discloses simple structure adopts brand-new push rod to return drive mechanism, can realize used repeatedly.
Claims (10)
1. A medical injection device with a replaceable medicine bottle comprises an outer barrel (2) and a pen cap (1), wherein a dose cylinder (7), a differential rod (8) and a transmission rod (21) are sequentially arranged inside the outer barrel (2) from outside to inside, the outer side wall of the dose cylinder (7) is in threaded connection with the inner side wall of the outer barrel (2), a clutch (5) is arranged in one end of the dose cylinder (7), two ends of the clutch (5) are respectively in one-way transmission linkage with one end of the dose cylinder (7) and one end of the differential rod (8), one end of the clutch (5) is provided with a trigger button (4), the medical injection device is characterized in that a push rod (9) with threads is axially arranged inside the transmission rod (21), one end of the outer barrel (2) is provided with a detachable medicine bin (14), and the medicine bin (14) is internally provided with a replaceable standard cassette medicine bottle (3), the medicine box is characterized in that a fixing sleeve (12) is arranged at one end, close to a medicine bin (14), in the outer barrel (2), a push rod seat (13) is axially arranged in the fixing sleeve (12), a transmission ring (19) capable of being meshed with the end portion of a transmission rod (21) is arranged in the push rod seat (13), a ratchet ring (11) capable of axially sliding is sleeved on the outer side of the transmission rod (21), one end face of the ratchet ring (11) is in one-way meshing with the inner portion of the outer barrel (2), a first spring (17) is axially arranged at the other end of the ratchet ring (11), a second spring (16) propped against the outer barrel (2) is axially arranged at one end of the push rod seat (13), and one end of a push rod (9) penetrates through the push rod seat (13) and extends into a standard cassette medicine bottle (3) to be connected with a push block (18).
2. The vial interchangeable medical injection device of claim 1 wherein: a threaded sleeve (20) is arranged at one end, close to the trigger button (4), between the inner part of the outer cylinder (2) and the dosage cylinder (7).
3. The vial interchangeable medical injection device of claim 1 wherein: the fixed cover (12) be cylindrical, its one end is provided with a plurality of profile (122) and detains mutually fixedly with the inside wall of urceolus (2), the inside wall middle part of fixed cover (12) evenly be provided with a plurality of direction muscle (125) round the circumference.
4. The vial interchangeable medical injection device of claim 3 wherein: fixed cover (12) other end both sides lateral wall on central symmetry be provided with and be curved direction catching groove (121), the inside wall of fixed cover (12) on be provided with arc guide way (124) that are linked together with direction catching groove (121), the inside wall of fixed cover (12) on be located the below of direction catching groove (121) and be provided with constant head tank (123), one end lateral wall of medicine storehouse (14) on both sides be provided with the protruding (141) of joint that match with direction catching groove (121), the protruding (141) one side of joint be provided with the protruding (142) of location that matches with constant head tank (123).
5. The vial interchangeable medical injection device of claim 3 wherein: the inside of push rod seat (13) be provided with well seat platform (131), the lateral wall of push rod seat (13) be provided with guide way (133) that a plurality of extended to well seat platform (131) and matched with direction muscle (125) round the circumference, the inside wall of push rod seat (13) on be located the position between adjacent guide way (133) and be provided with spacing muscle (132), driving ring (19) set up in well seat platform (131) upside middle part and carry out axial spacing by spacing muscle (132), the middle part of well seat platform (131) be provided with screw hole (134) that supply push rod (9) to pass.
6. The vial interchangeable medical injection device of claim 5 wherein: the transmission ring (19) is disc-shaped, one end of the transmission ring and the end of the transmission rod (21) are respectively provided with a circle of gear shaping teeth (212) which can be meshed with each other, and convex strips (213) embedded into axial grooves (91) on two sides of the push rod (9) are symmetrically arranged in an inner hole of the transmission ring (19).
7. The vial interchangeable medical injection device of claim 1 wherein: axial guide grooves (211) are symmetrically formed in the side walls of the two sides of the transmission rod (21), and guide protrusions (82) embedded into the axial guide grooves (211) are arranged in an inner hole of the ratchet ring (11) and on the inner side wall of one end of the differential rod (8).
8. The vial interchangeable medical injection device of claim 1 wherein: one end of the differential rod (8) is internally provided with a circle of first one-way convex teeth (81), one end of the dosage cylinder (7) is internally provided with a circle of second one-way convex teeth (71), and the outer sides of the two ends of the clutch (5) are respectively provided with a first elastic sheet (54) and a second elastic sheet (51) which are matched with the first one-way convex teeth (81) and the second one-way convex teeth (71).
9. The vial interchangeable medical injection device of claim 1 wherein: the inside of trigger button (4) be provided with and cup joint the cover post on clutch (5) upper portion, the upper end of clutch (5) be sharp head portion (53), sharp head portion (53) with cup joint the inboard top of post and withstand, the lower extreme inside wall of cup jointing the post on be provided with round spacing recess (6), the corresponding position in outside of clutch (5) be provided with round spacing bulge loop (55).
10. The vial interchangeable medical injection device of claim 1 wherein: the inner part of the outer barrel (2) is provided with a circle of limiting steps (15) at a position close to the fixed sleeve (12), an inner hole of each limiting step (15) is embedded into a circle of limiting concave section (214) on the outer side of the transmission rod (21), and one end of each limiting step (15) is meshed with one end of the ratchet ring (11) in a one-way mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055036.4U CN211068478U (en) | 2019-07-08 | 2019-07-08 | Medical injection device with replaceable medicine bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055036.4U CN211068478U (en) | 2019-07-08 | 2019-07-08 | Medical injection device with replaceable medicine bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211068478U true CN211068478U (en) | 2020-07-24 |
Family
ID=71640507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921055036.4U Withdrawn - After Issue CN211068478U (en) | 2019-07-08 | 2019-07-08 | Medical injection device with replaceable medicine bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211068478U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237365A (en) * | 2019-07-08 | 2019-09-17 | 宁波诺生医疗器械有限公司 | A kind of medical injection device of replaceable medicine bottle |
| CN113244484A (en) * | 2021-04-14 | 2021-08-13 | 中国人民解放军海军军医大学 | Controllable-dose rapid injection device for battlefield analgesia |
-
2019
- 2019-07-08 CN CN201921055036.4U patent/CN211068478U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237365A (en) * | 2019-07-08 | 2019-09-17 | 宁波诺生医疗器械有限公司 | A kind of medical injection device of replaceable medicine bottle |
| CN110237365B (en) * | 2019-07-08 | 2024-02-23 | 深圳惠迈智能科技有限公司 | Medical injection device capable of replacing medicine bottle |
| CN113244484A (en) * | 2021-04-14 | 2021-08-13 | 中国人民解放军海军军医大学 | Controllable-dose rapid injection device for battlefield analgesia |
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