TWI748665B - syringe - Google Patents

Abstract

A syringe includes a medicament container containing a medicament solution, an injection module, and a driving mechanism. The injection module includes a connected conversion mechanism and a needle ejection mechanism. The conversion mechanism is assembled with the medicament container, and the driving piston assembly in the conversion mechanism The drive mechanism is assembled and can be driven by the drive mechanism. During injection, the needle group in the needle ejection mechanism can be used to penetrate the human body, and the drive piston group of the conversion mechanism can be driven by the drive mechanism to transport the liquid medicine in the medicine container to the needle group. The injection of medicament solution is carried out, and the modular combined structure makes the medicament container and injection module involved in safety and sanitation in the syringe adopt a disposable method. After use, it is dismantled and discarded. In addition, the combined structure of the conversion mechanism and the external drive mechanism is used. The driving mechanism will not come into contact with the injected medicinal liquid in the process of medicinal liquid injection, the driving mechanism can be reused, and unnecessary material waste of the syringe is reduced.

Description

syringe

The present invention relates to a syringe used for subcutaneous injection of medicinal liquid in human body.

At present, the structure of the syringe used for subcutaneous injection of medicinal liquid in the human body mainly uses an injection module that can be manually or electrically operated to connect to the medicinal container, so that the needle set of the injection module can be inserted into the human body for subcutaneous injection.

Existing syringes are based on the safety regulations for drug solution injection, although some of the existing syringes have the function of being repeatedly used for a limited number of times. However, after the existing syringes have been used up to the number of times, the syringes need to be discarded as a whole group, and the syringes cannot be reused. Moreover, the existing syringe adopts a fixed combined structure, and its driving mechanism is directly connected to the injection module, and will contact the injected medicine. Based on the principle of safety and sanitation, it is difficult for the existing syringe to reuse part of the mechanism.

In addition, in order to avoid discomfort caused by multiple insertions and withdrawals of needles, the existing syringe can facilitate multiple subcutaneous injections into the human body. When subcutaneously inserted into the human body, because the soft needle is soft, it is difficult to directly penetrate the human body. Therefore, the soft needle is inserted into the human body in the form of a hard needle, and then the hard needle is removed from the soft needle, and then the soft needle is connected for injection The module and the medicament container are used for injection, and the soft needle can stay under the skin of the human body for a long time for multiple injections. However, in the aforementioned injection module, because it is used in combination with a soft needle and a hard needle combination, the user must take out the needle in a two-stage operation step, which is inconvenient for the user to operate during use, and further improvements are necessary. .

The purpose of the present invention is to provide a syringe, which solves the problem of material waste that requires the entire set of syringes to be discarded based on safety and sanitation after the existing fixed syringes are used.

In order to achieve the foregoing objective, the syringe proposed by the present invention includes: a medicament container, which includes a container body accommodating a medicament liquid, and a container connector provided on one side of the container body; and an injection module, which includes ：A conversion mechanism, which is assembled with the medicine container, and the conversion mechanism includes a conversion connection seat and a driving piston group installed in the conversion connection seat, the conversion connection seat includes an input adapter and an output adapter Connector, and the input adapter is connected to the container connector of the medicine container; a needle outlet mechanism is assembled to the conversion mechanism, the needle outlet mechanism includes a needle group, and the needle group can be connected to the output adapter And a drive mechanism, which can be detachably connected to the conversion mechanism of the injection module, the drive mechanism includes a housing and a drive member installed in the housing and capable of being operated and moved, and the housing can be detached Ground connection to the conversion connecting seat of the conversion mechanism, the driving member is connected to the driving piston group, and can drive the driving piston group to pump the medicine liquid in the medicine container to the needle ejection mechanism, and then the needle assembly of the needle ejection mechanism Perform drug solution injection.

The invention based on the integral structure of the aforementioned syringe uses an injection module including a connected conversion mechanism and a needle ejection mechanism. The conversion mechanism can be detachably connected to the drug container, and the driving piston group in the conversion mechanism can be detached and connected to the driving mechanism , And can be driven by the drive mechanism to deliver the drug solution in the drug container to the needle set for drug solution injection, and the modular combined structure makes the drug container and injection module involved in the safety and health of the syringe to be used for one-time use The method is to disassemble and discard after use without repeated use. In addition, the combined structure of the external driving mechanism of the conversion mechanism prevents the driving mechanism from contacting the injection liquid during the injection of the medicine. The driving mechanism of the syringe can Reuse and reduce unnecessary material waste of the syringe.

The syringe of the present invention can further utilize that the needle ejection mechanism includes a base, a connecting part, a needle ejection operating assembly, and a needle narrowing operating member. The base is connected to the conversion connecting seat, and the connection The component can be movably installed in the base, and the connecting component is connected to the output adapter of the conversion mechanism, the needle group can be movably installed in the connecting component, and the needle group includes a soft needle, A needle plug arranged at one end of the soft needle and a hard needle that can be inserted into the soft needle. The needle ejection assembly is movably installed in the base and connected to the needle set. The needle ejection assembly can be operated The needle set installed in the connecting member is driven to extend out of the base in the form of a hard needle inserted in the soft needle, and the hard needle is continuously driven to separate from the soft needle, so that the soft needle is connected to the conversion mechanism through the connecting member The output adapter, the narrowing operating member can be movably installed in the base, and the narrowing operating member can be operated to bring the connecting part and the soft needle belt set in the connecting part into a needle state Return to the base and other combined structure, whereby when the syringe is used for human body injection, the needle ejection mechanism in the injection module utilizes the operated needle ejection operating assembly after the syringe is abutted and fixed to the predetermined injection site of the human body Drive the needle group located in the connecting part, so that the needle group extends out of the base in a soft needle through the hard needle, and the needle can directly penetrate into the human body. When the needle operation component is operated, the hard needle is continuously driven to separate from the soft needle. , That is, the drive piston group of the conversion mechanism can be driven by the drive mechanism to move to perform the drug solution injection; after the injection, the narrowing operating member is operated to drive the connecting part and the soft needle set in the connecting part to be retracted into the base to narrow the needle together. In this way, the syringe has excellent simplicity during use.

The syringe of the present invention can further utilize that the base of the needle ejection mechanism has a movable chamber, the base is provided with a fixed hook on the periphery of the movable chamber, and the connecting part is movably installed in the movable chamber of the base Wherein, the connecting component includes a connecting head with a connecting base arranged on the connecting base, the connecting base has a base peripheral wall and a needle assembly part arranged in the base peripheral wall, the needle assembly part has a needle chamber, and One end of the needle assembly portion facing the seat plate is provided with a needle plug hole communicating with the needle chamber, the needle plug hole corresponds to the perforation of the seat plate, and the connector passes through the base and connects to the conversion mechanism. The output adapter, the peripheral wall of the base part has at least one cutting edge part; the soft needle of the needle set is movably installed in the needle chamber of the needle assembly part, and the needle plug provided in the soft needle can be operated and fixed In the needle plug hole; the needle ejection operation assembly includes a needle ejection operating member, a needle seat, a sealing member, and a spring. The needle ejection operating member is movably installed in the base, and the needle ejection The operating element can be buckled by the fixed hook of the base Fixed, the needle ejection operating member includes a button portion and an accommodating space located on one side of the button portion, the accommodating space corresponds to the activity chamber, and the needle seat is provided in the accommodating space of the needle ejection operating member The needle holder includes a needle holder head end and a needle holder connecting rod formed on the needle holder head end, and there is energy between the peripheral edge of the needle holder head end of the needle holder and the inner wall of the needle holder The connecting part cut by the cutting blade, the needle holder is connected to the hard needle with its needle holder connecting rod, and can be pushed against the needle plug of the needle group, the sealing member combined with the spring is installed in the connecting part , The sealing member is located outside the needle assembly portion and covers the needle chamber, the sealing member is tightly sleeved on the outer side of the needle seat connecting rod, the spring is sleeved on the outer side of the needle seat connecting rod, and the two springs The ends are respectively connected with the head end of the needle holder and the sealing member. With the integral composition of the aforementioned needle ejection mechanism, in one operation action when the needle ejection mechanism is pressed, the needle set extends out of the base by the soft needle through the hard needle, and the cutting edge of the connecting part cuts the needle. At the connecting part between the broken needle seat and the needle ejection operating member, the elastic force of the spring pushes the needle seat, and the needle seat drives the hard needle to be pulled out of the soft needle, so that the soft needle is connected to the output of the conversion mechanism through the needle chamber and the connector. The connector makes the operation of the needle out more convenient and easy.

The syringe of the present invention can further utilize the end of the connecting head of the connecting part of the needle ejection mechanism that is connected to the connecting base to form a reduced diameter portion that can be cut off, and the needle ejection operating member corresponds to the connecting head The side has a cutting knife part that can be operated to cut the reduced diameter part of the connecting head of the connecting part, so that the abutting inclined surface of the narrowing operation part of the needle ejection mechanism pushes the connecting part in the base away from the base When it is located on the back seat plate, the soft needle of the needle set is brought into the base at the same time, and the connecting part can be used to connect the reduced diameter part of the connector of the conversion mechanism as the cutting knife part of the needle ejection operating part fixed on the base. Cut off, so that the injection module can not be reused, to ensure the safety of the syringe.

The syringe of the present invention can further use the needle ejection mechanism to add a safety cover and a safety pin. The safety cover covers the outer side of the needle ejection operation assembly and can be clamped on the base. The safety pin penetrates A push spring is arranged between the safety cover and the needle ejection operating part of the needle ejection operating assembly, and between the safety cover and the needle ejection operating element. So that after the safety pin is removed and the safety cover is removed, the needle Only the mechanism can perform the needle ejection action to ensure the safety of use. In addition, after the safety pin is removed, the safety cover can be automatically bounced off the base by the ejector spring, which improves the convenience of operation.

10: Pharmacy container

11: Container body

12: Container joint

121: Female connector

122: card slot

13: Back film

2: Injection module

20: Conversion mechanism

21: Conversion connector

211: Block

212: Valve seat

213: Input adapter

2131: male connector

2132: Card Hook

214: output adapter

215: connecting board

216: Clamping part

217: Hook

218: Back Film

22: Drive piston group

221: Piston Barrel

2211: Valve connecting end

2212: Chute

2213: card block

222: Valve

2221: Input check valve

2222: output check valve

223: Piston Rod

2231: Slider

2232: L-shaped card slot

30: Needle out mechanism

31: Pedestal

311: Activity Room

312: Seat Plate

3121: Joint

313: Piercing

314: Through Hole

315: active mouth

316: fixed hook

32: Connecting parts

321: connection base

3211: Base wall

3212: Needle Assembly Department

3213: Needle Chamber

3214: pin plug hole

3215: Cutting edge

322: Connector

3221: Reduced diameter part

33: Needle group

331: soft needle

332: Needle Plug

333: Hard Needle

34: Needle out operation component

341: Needle out operating part

3411: Button

3412: Cutting Knife Department

342: Needle seat

3421: Head end of needle seat

3422: Needle seat connecting rod

3423: Connection Department

343: Sealing member

3431: gasket

3432: Cover

344: spring

35: Narrowing operation part

351: Pressing part

352: The top of the slope

353: Extension

36: Safety cover

37: safety pin

38: push spring

40: drive mechanism

41: Shell

411: Socket Department

4111: L-shaped card slot

412: shell parts

413: shell parts

414: fixed hook

42: Driver

420: connection end

421: card connection bump

422: return spring

43: Electric drive unit

431: drive components

432: Transmission Components

4321: Transmission rod

4322: gear set

4323: eccentric cam

44: control unit

441: control circuit board

442: display panel

443: Control key

444: contact switch

45: power storage unit

46: Electrical connection element

Fig. 1 is a perspective view of a preferred embodiment of the syringe of the present invention.

Fig. 2 is a partial exploded perspective view of the preferred embodiment of the syringe shown in Fig. 1.

Fig. 3 is a perspective view of the medicine container in the preferred embodiment of the syringe shown in Figs. 1 and 2.

4 is a schematic diagram of the assembly of the injection module in the preferred embodiment of the syringe shown in FIGS. 1 and 2.

Fig. 5 is a three-dimensional exploded schematic view of the conversion mechanism in the injection module shown in Figs. 1, 2 and 4;

6 is an exploded perspective view of the conversion mechanism in the injection module shown in FIGS. 1, 2 and 4 from another viewing angle.

Fig. 7 is a schematic partial side plan view of the preferred embodiment of the syringe shown in Figs. 1 and 2.

Fig. 8 is a schematic cross-sectional view of the position of the cut line A-A shown in Fig. 7.

Fig. 9 is a schematic cross-sectional view of the position of the cut line B-B shown in Fig. 7.

Fig. 10 is a three-dimensional exploded schematic view of the needle ejection mechanism in the injection module shown in Figs. 1, 2 and 4;

11 is an exploded perspective view of the needle ejection mechanism in the injection module shown in FIGS. 1, 2 and 4 from another viewing angle.

Fig. 12 is a schematic plan view of the needle ejection mechanism in the injection module shown in Figs. 1, 2 and 4;

Fig. 13 is a schematic cross-sectional view of the position of the cutting line C-C shown in Fig. 12.

Fig. 14 is a schematic cross-sectional view of the position of the cut line D-D shown in Fig. 12.

15 is a perspective exploded schematic view of the driving mechanism of the preferred embodiment of the syringe shown in FIGS. 1 and 2.

Fig. 16 is a three-dimensional exploded schematic view of the driving mechanism in the preferred embodiment of the syringe shown in Figs. 1 and 2 from another viewing angle.

Fig. 17 is a schematic diagram of the operation of assembling the medicament container to the injection module when the preferred embodiment of the syringe of the present invention shown in Figs. 1 to 2 is in use.

Fig. 18 is a schematic diagram of the operation of assembling the combination of the medicine container and the injection module to the driving mechanism when the preferred embodiment of the syringe of the present invention shown in Figs. 1 to 2 is in use.

19 is a schematic cross-sectional view of the needle ejection mechanism in the injection module with the safety cover and safety pin removed when the preferred embodiment of the syringe of the present invention shown in FIGS. 1 to 2 is in use.

Fig. 20 is a schematic diagram showing the operation of the needle mechanism shown in Fig. 19 when the needle ejection operating assembly is pressed to drive the needle group located in the connecting member to extend the needle out of the base in a soft needle through the hard needle manner.

Fig. 21 is a schematic diagram of the operation of the needle mechanism shown in Fig. 20 when the needle ejection operating member is fixed in the base, the needle seat is ejected from the needle ejection operating member, and the hard needle is driven away from the soft needle.

Fig. 22 is a schematic diagram of the operation of the needle mechanism shown in Fig. 20 to drive the soft needle to narrow the needle through the narrowing operating member after the injection is completed.

Fig. 23 is a schematic diagram (1) of the operation of the needle mechanism shown in Fig. 21 to narrow the needle and cut the diameter-reducing part of the connecting part of the connecting part.

Fig. 24 is a schematic diagram of the operation of the needle mechanism shown in Fig. 21 to narrow the needle and cut the diameter-reducing part of the connecting part of the connecting part (2).

As shown in Figures 1 and 2, which reveal a preferred embodiment of the syringe of the present invention, as can be seen from the drawings, the syringe defines an X-axis, a Y-axis and a Z-axis that are perpendicular to each other in a three-dimensional space. , And the opposite sides defining the X-axis direction are respectively a front and a back. The composition structure of the syringe includes a medicine container 10, an injection module 2 and a driving mechanism 40. The following is a description of its specific structure.

As shown in Figures 1 to 3, the medicament container 10 is used to contain and seal a predetermined dose of medicament solution. The medicament container 10 includes a container body 11 and a container connector 12, and the container body 11 contains There is a space that can seal the medicinal liquid. The container connector 12 is located on one side of the Z-axis direction of the container body 11 and communicates with the inside of the container body 11. The medicinal liquid filled in the container body 11 can be output through the container connector 12. In this preferred embodiment, the medicine container 10 may be provided with a backing film 13 with release paper on the back of the container body 11, so that the medicine container 10 can be peeled off the release paper, and then pasted on the human body or an article with the backing film 13 ; Or, replace the back film with a strap, and use the strap to fix the medicine container on the human body or the article. The medicine container 10 can be assembled with the injection module 2 by the container connector 12.

As shown in Figures 1, 2 and 4, the injection module 2 includes a conversion mechanism 20 and a needle ejection mechanism 30. The conversion mechanism 20 and the needle ejection mechanism 30 can be pre-assembled into a modularized form when they leave the factory. The structure allows the user to quickly combine the injection module 2 with the medicine container 10 and the driving mechanism 40 for use during use. The back of the injection module 2 can be provided with a backing film with release paper, so that after the release paper is torn off, the backing film can be pasted on the human body or an article, or the back of the injection module 2 can be provided with a strap to tie The belt replaces the back film and is fixed to the human body or objects by a belt.

As shown in FIGS. 4 to 6, the conversion mechanism 20 is connected to the medicine container 10 and the driving mechanism 40. The conversion mechanism 20 includes a conversion connection base 21 and a driving piston group 22. The conversion connection base 21 includes an input Adapter 213 and an output adapter 214, and the input adapter 213 is connected to the medicine container 10, and the output adapter 214 is connected to the needle ejection mechanism 30. In this preferred embodiment, the conversion connection The seat 21 further includes a seat body 211 and a valve seat portion 212. The valve seat portion 212 is provided on the seat body 211. The valve seat portion 212 has a sleeve opening with an outward opening, and the sleeve opening can be assembled with the driving piston assembly. 22. The input adapter 213 is arranged on the side of the valve seat portion 212 opposite to the sleeve opening, the output adapter 214 is arranged in the seat body 211, and the input adapter 213 and the output adapter 214 are respectively connected The sleeve port of the valve seat portion 212, the input adapter 213 is detachably connected to the container connector 12 of the medicine container 10, and the output adapter 214 can be connected to the needle mechanism 30.

As shown in FIGS. 4 to 6, in the preferred embodiment, the fitting opening of the valve seat portion 212 faces outward along the Y-axis direction, the input adapter 213 faces the Y-axis direction, and the output adapter 214 Towards the Z axis Towards. The driving piston group 22 is installed at the fitting opening of the valve seat portion 212, and the driving piston group 22 can be moved in a controlled manner so that the medicine liquid in the medicine container 10 can be drawn into the driving piston group 22 through the input adapter 213, Then, the medicament liquid input into the driving piston group 22 is transferred to the output adapter 214 for output. The base 211 may also have a connecting plate 215, and the connecting plate 215 is connected to the needle ejection mechanism 30, wherein the connecting plate 215 forms a clamping portion 216 on opposite sides of the Y-axis direction, and The connecting plate 215 has a hook portion 217 so that the connecting plate 215 can be combined with the needle ejection mechanism 30 by clamping.

As shown in FIGS. 4 to 6, in the preferred embodiment, the input adapter 213 of the conversion mechanism 20 includes a male connector 2131 and at least one hook 2132, and the container connector 12 of the medicine container 10 includes a female connector The connector 121 and the at least one slot 122, by the matching combination of the male connector 2131 of the input adapter 213 and the female connector 121 of the container connector 12, and the hook 2132 of the input adapter 213 and the container connector 12 and slot 122 matching combinations. The male connector 2131 and the female connector 121 can be a standardized male luer taper and a female luer taper, respectively, and they can be combined with a minimal leakage-free function.

As shown in Figures 4 to 6, in this preferred embodiment, the back of the connecting plate 215 of the seat body 211 of the conversion connecting seat 21 is provided with a backing film 218 with release paper, so that it can tear off the release paper. The backing film 218 is adhered to the human body or the article, or the back of the seat body 211 of the conversion connecting seat 21 is provided with a strap, and the backing film is replaced by the strap, and the strap is fixed on the human body or the article.

As shown in Figures 2, 4 to 6 and Figures 7 to 9, in this preferred embodiment, the driving piston set 22 includes a piston barrel 221, a valve member 222, and can be inserted in the piston barrel 221 For the piston rod 223 that moves linearly along the Y axis, one end of the piston barrel 221 has a valve connecting end 2211, and the piston barrel 221 has a piston chamber that extends to the Y axis of the piston barrel 221 The other end in the axial direction is formed with an opening. The piston cylinder 221 is combined with the valve element 222 with the valve element connecting end 2211 and installed in the valve seat portion 212. The valve element 222 has an input check valve 2221 and An output check valve 2222, the input check valve 2221 is correspondingly connected to the input adapter 213, and the input check valve 2221 can only be unidirectionally opened by the input adapter 213 toward the valve seat portion 212, and the output check valve 2222 Correspondingly connect the output adapter 214, and output The check valve 2222 can only be opened in one direction from the valve seat portion 212 toward the output adapter 214. The input adapter 213 and the output adapter 214 of the conversion connection seat 21 respectively pass through the input check valve 2221 of the valve member 222 The output check valve 2222 can be communicated with the piston chamber of the piston barrel 221 in a controlled manner. The piston rod 223 is installed in the piston barrel 221 so as to move linearly along the Y-axis direction, and is detachable by the piston rod 223 The driving mechanism 40 is connected in a group, so that the piston rod 223 can be driven by the driving mechanism 40.

As shown in the preferred embodiment shown in FIGS. 4 to 6, the inner wall of the piston cylinder 221 is provided with at least one sliding groove 2212 extending along the Y-axis direction, and the outer peripheral surface of the piston rod 223 is provided with at least one sliding block 2231, each of the sliding blocks 2231 is respectively disposed in the corresponding sliding groove 2212, and is used to guide the piston rod 223 to move linearly along the Y-axis direction in the piston barrel 221. In addition, the piston rod 223 is a hollow rod, which has at least one L-shaped clamping groove 2232, so that the piston rod 223 and the driving mechanism 40 are connected in a rotary clamping manner, and the piston rod 223 can be the driving mechanism 40 Driven by.

As shown in Figures 2, 4 and 10 to 14, the needle ejection mechanism 30 is connected to the conversion mechanism 20 for performing the injection of the medicament solution. The needle ejection mechanism 30 includes a base 31, a connecting member 32, A needle group 33, a needle ejection operating assembly 34, and a narrowing operating member 35.

As shown in FIGS. 10 to 14, the base 31 can be combined with the base 211 of the conversion mechanism 20, and the base 31 has an active chamber 311 with an opening facing the front of the X-axis direction, and the active chamber 311 faces The back side in the X-axis direction has a seat plate 312, the seat plate 312 is provided with a through hole 313 communicating with the active chamber 311, and the base 31 is provided with a communicating chamber 311 on the side of the active chamber 311 in the Y-axis direction A through hole 314 is provided with a movable opening 315 connected to the movable chamber 311 on the side of the base 31 facing the conversion mechanism 20. The seat plate 312 is provided with a coupling portion 3121 on both sides of the Y-axis direction. By combining the coupling portion 3121 and the clamping portion 216 of the connecting plate 215 of the conversion connecting seat 21 of the conversion mechanism 20 correspondingly, the connecting plate 215 The hook portion 217 can be clamped to the fixed seat plate 312, and the base 31 is further provided with a fixed hook 316 on the periphery of the activity chamber 311.

As shown in FIGS. 10 to 14, the connecting member 32 is installed in the movable chamber 311 of the base 31 to move along the X-axis direction, and the connecting member 32 includes a connecting base 321 and a connecting head 322. The connecting base portion 321 has a base peripheral wall 3211 and a needle assembly portion 3212 provided in the base peripheral wall 3211, the needle assembly portion 3212 has a needle chamber 3213, and the needle assembly portion 3212 faces the base One end of the seat plate 312 of the seat 31 is provided with a needle plug hole 3214 communicating with the needle chamber 3213. The position of the needle plug hole 3214 corresponds to the position of the through hole 313 of the seat plate 312. The connector 322 is provided on the connecting base 321 It is connected to the needle chamber 3213 in the needle assembly portion 3212, and the connector 322 extends in the Z-axis direction. In the present preferred embodiment, the end of the connector 322 connected to the connection base 321 is formed with a reduced diameter A reduced diameter portion 3221 that can be cut off, the connecting head 322 of the connecting member 32 passes through the movable opening 315 of the base 31 and is connected to the output adapter 214 of the conversion mechanism 20. The base peripheral wall 3211 has at least one cutting edge 3215 on a side of the seat plate 312 away from the base 31.

As shown in Figures 10 to 14, the needle set 33 is installed in the needle assembly portion of the connecting member 32 so as to be movable in the X-axis direction, and can be operated to perform the needle ejection and narrowing actions. 33 includes a soft needle 331, a needle plug 332, and a hard needle 333. The soft needle 331 is movably installed in the needle chamber 3213 of the needle assembly portion 3212 along the X axis. One end of the soft needle 331 Towards the needle plug hole 3214, the other end of the soft needle 331 is fixed to the needle plug 332. When the soft needle 331 is driven to extend out of the seat plate 312 of the base 31, the needle plug 332 can be fixed in the needle plug hole. 3214, the hard needle 333 can be driven to pass through the needle plug 332 and the soft needle, and be ejected together with the soft needle 331, and after the soft needle 331 is ejected, the hard needle 333 can be driven out of the soft needle 331 The soft needle 331 communicates with the switching mechanism 20 through the needle chamber 3213 and the connector 322, providing a path for the flow of the medicament solution; in the narrowing state, the soft needle 331 can be driven along with the connecting member 32 to be recovered into the base 31 .

As shown in Figures 10 to 14, the needle ejection operation assembly 34 is installed in the base 31 and can drive the needle assembly 33 to perform the needle ejection action. The needle ejection operation assembly 34 includes a needle ejection operating member 341 , A needle seat 342, a sealing member 343 and a spring 344.

As shown in FIGS. 10 to 14, the needle ejection operating member 341 is installed in the base 31 so as to be movable in the X-axis direction, and the needle ejecting operating member 341 can be secured by the fixed hook 316 of the base 31 Buckle It is determined that the needle ejection operating member 341 includes a button portion 3411 and an accommodation space located on one side of the button portion 3411, and the location of the accommodation space corresponds to the position of the active room 311 of the base 31. The needle ejection operating member 341 has a cutting knife portion 3412 on one side corresponding to the connecting head 322, and the cutting knife portion 3412 can be operated to cut the reduced diameter portion 3221 of the connecting head 322 of the connecting member 32.

As shown in Figures 10 to 14, the needle seat 342 is disposed in the movable chamber 311 of the needle ejection operating member 341 and connected to the needle ejecting operating member 341. After the needle seat 342 is in the needle ejecting state, the needle seat 342 can Detach from the needle ejection operating member 341, the needle seat 342 includes a needle seat head end 3421 and a needle seat connecting rod 3422. The needle seat head end 3421 is connected to the needle ejecting operating member 341, and the needle seat connecting rod 3422 is formed on the needle seat head end 3421 , And the needle seat connecting rod 3422 is connected to the hard needle 333, and can push against the needle plug 332 of the needle group 33.

As shown in Figures 10 to 14, in this preferred embodiment, the needle holder 342 and the needle ejection operating member 341 are integrally formed parts, and the peripheral edge of the needle holder head 3421 and the accommodation space of the needle ejecting operating member 341 There is a connecting part 3423 between the inner walls that can be cut off. The connecting portion 3423 is cut off by the cutting edge portion 3215 of the connecting member 32 installed in the base 31, so that the needle seat 342 is separated from the needle ejection operating member 341.

As shown in FIGS. 10 to 14, the sealing member 343 is installed in the connecting member 32 in combination with the spring 344, and the sealing member 343 is disposed on the outside of the needle assembly portion 3212 and covers the needle chamber 3213. The sealing member 343 is tightly sleeved on the outer side of the needle seat connecting rod 3422. The spring 344 is sleeved on the outer side of the needle seat connecting rod 3422. The two ends of the spring 344 are respectively connected to the needle seat head end 3421 of the needle seat 342 and the sealing member 343. In a preferred embodiment, the sealing member 343 includes a sealing gasket 3431 and a cover 3432 sleeved on the outer side of the sealing gasket 3431. The cover 3432 provides a contact position of the spring 344, and the sealing gasket 3431 is sleeved tightly. On the outside of the needle seat connecting rod 3422.

As shown in Figures 10 to 14, when the needle ejection operating member 341 is pressed toward the base 31, the hard needle 333 of the needle set 33 is inserted in the soft needle 331, so the needle ejection operating member 341 drives the needle The seat 342 pushes the needle assembly out of the seat plate 312 of the base 31, and at the same time presses the connecting member 32 through the spring 344, so that the connecting member 32 abuts against the seat plate 312 on the back of the base 31, which can be combined with the soft needle 331 Combination of hard needle 333 Pierce the human body until the needle plug 332 is fixed in the needle plug hole 3214 of the needle assembly portion 3212, the needle ejection operating member 341 is buckled and fixed by the fixing hook 316 in the base 31, and the connecting portion 3423 on the periphery of the needle seat 342 Then it is cut by the cutting edge portion 3215 of the connecting member 32, and the needle holder 342 is automatically pushed outward by the elastic force of the spring 344, and at the same time, the needle holder connecting rod 3422 of the needle holder 342 drives the hard needle 333 to withdraw from the soft needle 331 , The soft needle 331 is connected to the conversion mechanism 20 via the needle chamber 3213 of the connecting member and the connector 322.

As shown in FIGS. 10 to 14, the narrowing operating member 35 extends from the outer side of the base 31 into the active chamber 311 through the through hole. The narrowing operating member 35 includes a pressing portion 351, an abutting inclined surface 352, and an extension portion 353. The pressing portion 351 is located on the outer side of the base 31, and the abutting inclined surface 352 is located at an area where the pressing portion 351 extends into the activity chamber 311 The extension part 353 is located on the side where the pressing part 351 extends into the active chamber 311 and bypasses the needle assembly part 3212 and the extension part 353 of the connecting part 32. There is a limit hook at the end of the base 31. By the limit of the limit hook by the base 31, the narrowing operating member 35 is installed in the base 31 and can move in a limited distance without detaching from the base 31. When the pressing portion 351 of the narrowing operating member 35 is pressed, the connecting member 32 in the base 31 can be pushed away from the seat plate 312 on the back of the base 31 by the abutting inclined surface 352, thereby driving the connecting member 32 and passing through the connecting member 32 The soft needle 331 of the needle group 33 in the component 32 is retracted into the base 31.

As shown in FIG. 10, FIG. 11 and FIG. 14, a safety cover 36 and a safety pin 37 can be added to the needle ejection mechanism 30 to ensure the safety of the needle ejection mechanism 30 in use. The safety cover 36 covers the outside of the needle ejection operation assembly 34 and can be clamped to the base 31 to be fixed. The safety pin 37 penetrates through the safety cover 36 and the needle ejection operation member 341 of the needle ejection operation assembly 34. It is fixed, so that after the safety pin 37 is removed and the safety cover 36 is removed, the needle ejection mechanism 30 can perform the needle ejection action to ensure the safety of use. In addition, an ejection spring 38 can be provided between the safety cover 36 and the needle ejection operating member 341. After the safety pin 37 is removed, the ejection spring 38 automatically bounces the safety cover 36 away from the base 31. Improve the convenience of operation.

As shown in Figures 1, 2 and 15 to 16, the drive mechanism 40 is assembled with the conversion mechanism 20 of the injection module, and can drive the piston rod 223 in the conversion mechanism 20 to move. The drive mechanism 40 can It is a manual drive mechanism or an electric drive mechanism. Preferably, the drive mechanism 40 is detachably connected to the conversion mechanism 20 of the injection module, so that the drive mechanism 40 can be used repeatedly. The driving mechanism 40 includes a housing 41 and a driving member 42 installed in the housing 41. The housing 41 is detachably connected to the conversion connecting seat 21 of the conversion mechanism 20, and the driving member 42 is detachable. The piston rod 223 is connected, and the driving member 42 can manually or electrically drive the piston rod 223 to move.

As shown in the preferred embodiment shown in FIGS. 15 to 16, the housing 41 has a hollow body inside, and the side of the housing 41 has a socket part 411, and the socket part 411 has a sleeve extending from the outside to There is a shaft hole inside the housing 41, and the sleeve pipe portion 411 is detachably sleeved on the outside of the piston barrel 221 of the conversion mechanism 20.

As shown in FIGS. 15 to 16, in this preferred embodiment, the housing 41 is composed of a plurality of housing parts 412 and 413 assembled by screwing, clamping or bonding. The socket pipe portion 411 and the piston barrel 221 are connected in a rotatable clamping manner. The outer peripheral surface of the piston barrel 221 is provided with a clamping block 2213, and the socket pipe portion 411 is provided with an L-shaped clamping groove 4111. The combination of the shaped slot 4111, the sleeve pipe portion 411 and the piston barrel 221 can be connected in a rotatable clamping manner.

As shown in Figures 15 to 16 in conjunction with Figures 8 and 9, the driving member 42 is linearly movably installed in the socket tube portion 411 of the housing 41, and the driving member 42 faces outward of the socket tube portion 411 One end is a connecting end 420, and the connecting end 420 is detachably connected to the piston rod 223. In this preferred embodiment, the outer peripheral surface of the connecting end portion 420 of the driving member 42 has at least one clamping protrusion 421. The driving member 42 can be installed in the piston rod 223, and the clamping protrusion 421 and The L-shaped clamping groove 2232 of the piston rod 223 is correspondingly matched, so that the piston rod 223 and the driving mechanism 40 are connected in a rotatable clamping manner.

As shown in FIGS. 15 to 16, in this preferred embodiment, the driving mechanism 40 is an electric driving mechanism, but it is not limited to this. When the drive mechanism 40 is an electric drive mechanism, in addition to the housing 41 and the drive member 42 installed in the housing 41, the drive mechanism 40 also includes an electric drive unit 43. And a control unit 44, or further include a power storage unit 45.

As shown in FIGS. 15 to 16, the electric drive unit 43 is installed in the housing 41 and can be connected to the drive member 42 provided in the socket portion 411 of the housing 41. The electric drive unit 43 includes a The drive assembly 431 and a transmission assembly 432. The drive assembly 431 can be an electric drive mechanism including a motor and a pump or other electric rotation drive mechanisms. The drive assembly 432 connects the drive assembly 431 and the drive 42 so that the drive assembly 431 can drive the driving member 42 via the transmission assembly 432. In this preferred embodiment, the transmission assembly 432 includes a transmission rod 4321 and a gear set 4322. The transmission rod 4321 is pivoted in the housing 41. The transmission rod 4321 has at least one eccentric cam 4323. The gear set 4322 includes a plurality of meshing gears, and the gear set 4322 is connected between the driving assembly 431 and the transmission rod 4321. The eccentric cam 4323 of the transmission rod 4321 is connected to the other end of the driving member 42 in the housing 41 and drives A return spring 422 is installed between the member 42 and the housing 41 to combine with the eccentric cam 4323 of the transmission rod 4321 to drive the driving member 42 and the connected piston rod 223 to linearly reciprocate. In this preferred embodiment, the return spring 422 is a compression spring, the return spring 422 is sleeved on the outer side of the driving member 42, and the other end of the driving member 42 in the housing 41 has an abutting flange. Both ends of the spring 422 abut against the abutting flanges of the housing 41 and the driving member 42 respectively.

As shown in FIGS. 15-16, the control unit 44 is installed in the housing 41, and the control unit 44 includes a control circuit board 441 and a display panel 442, and the display panel 442 is electrically connected to the control circuit board 441 , And the display panel 442 is exposed on the front of the housing 41. The display panel 442 may be a display panel with a display function. The control unit 44 also has at least one control key 443. The control key 443 is arranged on the front of the housing 41 And it is located on the side of the display panel 442, and the control key 443 is electrically connected to the control circuit board 441, allowing the user to switch, set, and operate via the control key 443. Alternatively, the display panel 442 can also be a touch-sensitive display panel, which is disabled to display the working status and has user operation definitions, allowing the user to perform settings and operations on the display panel.

As shown in FIGS. 15 to 16, in addition, the control unit 44 further includes at least one contact switch 444. The contact switch 444 is provided on a side of the housing 41 adjacent to the needle ejection mechanism 30 and is electrically connected to The control circuit board 441, and when the drive mechanism 40 is connected to the conversion mechanism 20 of the injection module 2, the needle ejection mechanism 30 of the injection module 2 can contact the contact switch 444 to switch the control unit 44 from the off state To the enabled state. The drive mechanism 40 can also be provided with a fixed hook 414 at a position adjacent to the contact switch 444 of the housing 41. The base 31 of the needle ejection mechanism 30 is fixed on the housing 41 by the fixed hook 414, so that the drive mechanism 40 and the injection Module 2 is firmly combined.

As shown in FIGS. 15 to 16, the control unit 44 can be connected to an external power source or to the power storage unit 45, and the external power source or power storage unit 45 provides electrical energy required for the actuation of the driving mechanism 40. In the preferred embodiment shown in FIGS. 15 to 16, the driving mechanism 40 further includes an electric storage unit 45, which is installed in the housing 41 and is electrically connected to the control unit 44 Control circuit board 441. The power storage unit 45 may be a wireless rechargeable power storage unit, a wired rechargeable power storage unit, or other non-rechargeable power storage units (for example, batteries). In the preferred embodiment shown in FIGS. 15 to 16, the power storage unit 45 is a rechargeable power storage unit, such as a lithium battery, and the power storage unit 45 is electrically connected to an electrical connection element 46. The electrical connection element 46 is exposed outside the housing 41, and can be connected to an external power source via a connecting wire, so as to charge the power storage unit 45. The electrical connection element 46 can be a universal serial bus (USB) electrical connection element or other types of electrical connection elements.

Regarding the use of the syringe of the present invention, please refer to Figures 17 and 18. The conversion mechanism 20 and the needle ejection mechanism 30 have been pre-assembled into an injection module 2 at the factory. When the user wants to perform a subcutaneous injection , The medicament container 10 with the injection medicament solution and the driving mechanism 40 are sequentially assembled to the conversion mechanism 20 of the injection module 2, wherein the medicament container 10 is connected to the input conversion mechanism of the conversion mechanism 20 of the injection module 2 with the container connector 12 The joint 213 is assembled to connect the driving mechanism 40 to the conversion mechanism 20, wherein the sleeve pipe portion 411 of the driving mechanism 40 is assembled to the piston barrel 221 of the conversion mechanism 20 in a rotary snap connection manner, and the driving part is connected to the piston at the same time. After the injection module 2 rotates to a predetermined position, the needle ejection mechanism 30 contacts the contact switch 444 of the driving mechanism 40, and the control unit 44 of the driving mechanism 40 is switched from the closed state to the activated state.

As shown in Figures 18 to 21, before injection, the medicament container 10 and the injection module 2 are fixed to the intended injection site of the human body by the backing film 13 or the band tightening method, and then the injection module 2 is removed. The safety pin 37 and the safety cover 36 of the needle ejection mechanism 30. Secondly, press the needle ejection operating member 341 of the needle ejection mechanism 30 to fix the needle ejection operating member 341 on the base 31, and at the same time push the needle assembly 33 through the needle seat 342 , The needle set 33 is extended out of the base 31 with a hard needle 333 in the soft needle 331, and the needle is directly pierced into the human body. In addition, the cutting blade portion 3215 of the connecting member 32 cuts off the needle seat 342 and the needle ejection operation. At the connecting part 3423 between the parts 341, the elastic force of the spring 344 pushes the needle seat 342, and the needle seat 342 drives the hard needle 333 to be pulled away from the soft needle 331, the soft needle 331 stays in the human body, and the soft needle 331 passes through the needle chamber 3213 and the connector 322 are connected to the output adapter 214 of the conversion mechanism 20. After that, the user can operate the driving mechanism 40 to drive the driving piston assembly 22 of the conversion mechanism 20 to move, and then extract the medicinal solution from the medicinal container 10 and transfer it to To the needle ejection mechanism 30, the soft needle 331 is injected into the human body. After the injection is completed, the driving mechanism 40 is stopped to drive the driving piston group 22 of the conversion mechanism 20 to move. In this way, by fixing the syringe on the human body and the soft needle 331 maintaining the state of penetrating the human body, the user can regularly perform injections through the driving mechanism 40 for multiple times.

When the medicament liquid in the medicament container 10 is used up, as shown in FIG. 22, the user presses the narrowing operating member 35 of the needle ejection mechanism 30, and uses the abutting inclined surface 352 of the narrowing operating member 35 to push the connection in the base 31 The component 32 is away from the seat plate 312 on the back of the base 31, and at the same time drives the soft needle 331 of the needle set 33 provided in the connecting component 32 to be pulled out of the human body and retracted into the base 31 together, as shown in Figs. 23 and 24, At this time, when the connecting member 32 is pushed by the abutting inclined surface 352 of the narrowing operating member 35, the connecting member 32 is connected to the reduced diameter portion 3221 of the connecting head 322 of the conversion mechanism 20, which is the needle ejecting operation fixed on the base 31 The cutting knife part 3412 of the part 341 is cut off so that the injection module 2 cannot be reused to ensure the safety of the syringe. After the syringe is used, the driving mechanism 40 can be removed from the injection module 2 and save it for the next time. use.

10: Pharmacy container

11: Container body

13: Back film

2: Injection module

20: Conversion mechanism

22: Drive piston group

221: Piston Barrel

30: Needle out mechanism

36: Safety cover

37: safety pin

40: drive mechanism

41: Shell

411: Socket Department

414: fixed hook

42: Driver

444: contact switch

4111: L-shaped card slot

442: display panel

443: Control key

Claims (9)

A syringe comprising: a medicine container, which comprises a container body containing a medicine liquid, and a container connector arranged on one side of the container body; an injection module comprising: a conversion mechanism, which is assembled The medicine container, and the conversion mechanism includes a conversion connection seat and a driving piston assembly installed in the conversion connection seat, the conversion connection seat includes an input adapter and an output adapter, and the input conversion The connector is connected to the container connector of the medicament container; a needle ejection mechanism is assembled with the conversion mechanism, the needle ejection mechanism includes a needle group, and the needle group can communicate with the output adapter; and a driving mechanism, which can The conversion mechanism of the injection module is connected in a disassembled manner. The driving mechanism includes a casing and a driving member installed in the casing and capable of being operated and moved. The casing can be disassembled and connected to the conversion connection of the conversion mechanism Seat, the driving member is connected to the driving piston group, and can drive the driving piston group to pump the medicine liquid in the medicine container to the needle ejection mechanism, and then the needle group of the needle ejection mechanism executes the medicine liquid injection; wherein, the The needle ejection mechanism includes a base, a connecting part, a needle ejection operating assembly, and a narrowing operating element. The base is connected to the conversion connecting seat, the connecting part can be movably installed in the base, and the connection The component is connected to the output adapter of the conversion mechanism, the needle group can be movably installed in the connecting component, and the needle group includes a soft needle, a needle plug arranged at one end of the soft needle, and One of the soft needles is a hard needle. The needle ejection assembly is movably installed in the base and connected to the needle set. The needle ejection assembly can be operated to drive the needle set installed in the connecting component to The soft needle penetrates the hard needle out of the base to extend the needle out of the base, and continuously drives the hard needle to separate from the soft needle, so that the soft needle is connected to the output adapter of the conversion mechanism through the connecting part, and the narrowing operating member It can be movably installed in the base, and the narrowing operating member can be operated to drive the connecting component and the soft needle inserted in the connecting component to retract into the base. The syringe according to claim 1, wherein the base of the needle ejection mechanism has an active chamber, the back of the base has a plate and a through hole in the base plate communicating with the active chamber, and the base The side facing the conversion mechanism is provided with a movable opening connected to the activity room, and the base is provided with a fixed hook on the periphery of the activity room; the connecting part is movably installed in the activity room of the base Wherein, the connecting component includes a connecting base and a connecting head, the connecting base has a base peripheral wall and a needle assembly portion provided in the base peripheral wall, the needle assembly portion has a needle chamber, and the needle assembly device One end of the part facing the seat plate is provided with a needle plug hole communicating with the needle chamber, the needle plug hole corresponds to the perforation of the seat plate, and the connector is provided on the connecting base and communicates with the needle in the needle assembly portion The connecting head passes through the movable opening of the base and is connected to the output adapter of the conversion mechanism. The peripheral wall of the base has at least one cutting edge; the soft needle of the needle set is movably installed on the needle In the needle chamber of the assembling part, the needle plug provided in the soft needle can be operated and fixed in the needle plug hole; the needle ejection operation assembly includes a needle ejection operating member, a needle seat, a sealing member and a spring, The needle ejection operating member is movably installed in the base, and the needle ejecting operating member can be buckled and fixed by the fixed hook of the base. The needle ejecting operating member includes a button portion and located on the button An accommodating space on one side of the part, the accommodating space corresponding to the activity chamber, the needle holder is arranged in the accommodating space of the needle ejection operating member and connected to the needle ejecting operating member, the needle base includes a needle The hub end and a hub connecting rod formed at the head end of the hub, the peripheral edge of the hub head end and the inner wall of the accommodating space of the needle ejection operating member have a connecting portion that can be cut by the cutting blade portion, the The needle seat connecting rod is connected to the hard needle and can push against the needle plug of the needle set. The sealing member is installed in the connecting part in combination with the spring. The sealing member is located outside the needle assembly portion and covers the needle The sealing member is tightly sleeved on the outer side of the needle seat connecting rod, the spring is sleeved on the outer side of the needle seat connecting rod, and the two ends of the spring are respectively connected to the needle seat head end of the needle seat and the sealing member . The syringe according to claim 2, wherein the connecting head of the connecting member is connected to the connecting base to form a reduced diameter portion that can be cut off, and the needle ejection operating member is connected to the connecting base. The corresponding side of the joint is provided with a cutting knife part which can be operated to cut the reduced diameter part of the connecting head of the connecting part. The syringe according to claim 2, wherein the base is provided with a through hole communicating with the active chamber on one side of the active chamber, and the narrowing operation member extends from the outside of the base into the active chamber through the through hole , The narrowing operating member includes a pressing portion, an abutting inclined surface, and an extension portion. The abutting inclined surface abuts against the peripheral wall of the base of the connecting member, the extension is located on the side where the pressing portion extends into the movable chamber and bypasses the needle assembly portion of the connecting member; the connecting head of the connecting member is connected to one end of the connecting base A reduced diameter portion with reduced diameter and capable of being cut is formed. The needle ejection operating member has a cutting knife portion on the side corresponding to the connecting head, and the cutting knife portion can be operated to cut the connecting head of the connecting part. Reduced diameter part. The syringe according to any one of claims 1 to 4, wherein the needle ejection mechanism is further provided with a safety cover and a safety pin, and the safety cover covers the outer side of the needle ejection operation assembly and can be clamped On the base, the safety pin penetrates through the safety cover and the needle ejection operating member of the needle ejection operating assembly, and a push spring is arranged between the safety cover and the needle ejection operating member. The syringe according to any one of claims 1 to 4, wherein the conversion connection seat further includes a seat body and a valve seat portion provided on the seat body, the valve seat portion has a set of openings, and the input switch The joint is arranged on the side of the valve seat portion opposite to the sleeve port, the output adapter is arranged in the seat body, the input adapter and the output adapter are respectively connected to the sleeve port, and the drive piston The set includes a piston barrel with a piston chamber, a valve member, and a piston rod that can move linearly in the piston barrel. One end of the piston barrel has a valve connecting end, and the valve connecting end is combined with the valve member. And installed in the valve seat portion, the valve element has an input one-way valve corresponding to the input adapter, and an output one-way valve corresponding to the output adapter, the piston rod can be linear It is movably installed in the piston barrel, and the piston rod is detachably connected to the driving part of the driving mechanism. The syringe according to claim 6, wherein the side of the housing has a sleeve portion, the sleeve portion is detachably sleeved on the outside of the piston barrel of the conversion mechanism, and the drive member is installed so as to move linearly In the socket part; the drive mechanism includes an electric drive unit and a control unit, the electric drive unit is installed in the housing, the electric drive unit includes a drive assembly and a transmission assembly, the transmission assembly is connected to the The driving assembly and the driving part, the control unit is installed in the casing, the control unit includes a control circuit board and a display panel electrically connected to the control circuit board, and the display panel is exposed outside the casing. The syringe according to claim 7, wherein the transmission assembly includes a transmission rod and a gear set, the transmission rod is pivoted in the housing, the transmission rod has at least one eccentric cam, and the gear set is connected to the drive Between the assembly and the transmission rod, the eccentric cam of the transmission rod is connected with the driving part, and a return spring is arranged between the driving part and the housing. The injector according to claim 7, wherein the driving mechanism further includes an electric storage unit, and the electric storage unit is installed in the casing and electrically connected to the control circuit board of the control unit.

Images