CN219743626U - Local anesthetic needle suitable for superficial skin - Google Patents
Local anesthetic needle suitable for superficial skin Download PDFInfo
- Publication number
- CN219743626U CN219743626U CN202223225668.5U CN202223225668U CN219743626U CN 219743626 U CN219743626 U CN 219743626U CN 202223225668 U CN202223225668 U CN 202223225668U CN 219743626 U CN219743626 U CN 219743626U
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- China
- Prior art keywords
- limiting plate
- limiting
- installation cavity
- local anesthetic
- movable rod
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- 239000003589 local anesthetic agent Substances 0.000 title claims abstract description 20
- 239000003814 drug Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 229940079593 drug Drugs 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000036407 pain Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002690 local anesthesia Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a local anesthetic needle suitable for superficial skin, which comprises a starting device and a disposable medicine injection head which are detachably connected; the starting device comprises an upper shell, wherein an installation cavity is arranged in the upper shell, a guide hole is arranged below the installation cavity, a limiting plate is arranged in the installation cavity and is in sliding connection with the bottom of the installation cavity, one end of the limiting plate is matched with a reset spring to be connected with the side wall of the installation cavity, and a starting button is arranged at the other end of the limiting plate; the limiting plate is provided with a limiting hole, the top of the movable rod is matched with the transmitting spring to be connected with the top of the mounting cavity, the lower part of the movable rod penetrates through the limiting hole to be matched with the guide hole, the movable rod is provided with a limiting block, and the side wall of the guide hole is provided with a guide groove matched with the limiting block; the disposable medicine injection head comprises a lower shell, a medicine liquid cavity is formed in the lower shell, a needle body is arranged at the bottom end of the medicine liquid cavity, a piston is arranged at the top of the medicine liquid cavity, and the piston corresponds to the lower end of the movable rod. The disposable injection head is arranged, the operation is simple, the dosage is easy to control, and the medicine waste is reduced.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a local anesthetic needle suitable for superficial skin.
Background
When the operation is performed by the invasive operations such as arterial puncture, deep vein puncture and other punctures, the skin nerve distribution at the operation part is rich, the patient can feel obvious pain during puncturing, if the puncture operation is not smooth, the position of the puncture needle needs to be adjusted repeatedly, the pain is obviously increased, the doctor-seeking experience of the patient is reduced, and the tension of doctor-patient relationship is easily caused. Therefore, a small amount of local anesthetic is injected into the puncture site before arterial puncture, and pain during puncture is relieved.
At present, a small amount of local anesthetic is generally withdrawn using a common 1ml or 5ml syringe and then subcutaneously injected using a corresponding needle body, but there are problems in that not only is the operation extremely inconvenient, but also the injection dosage is difficult to grasp. Meanwhile, the effect of effectively relieving pain of patients cannot be achieved because of thicker injection needle body. In addition, after a small amount of local anesthetic is extracted, the residual local anesthetic in the bottle can only be used as waste, and the waste of liquid medicine can be caused. Therefore, there is a need for a local anesthetic needle that is easy to handle and that solves the above-mentioned problems.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a local anesthetic needle suitable for superficial skin.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a local anesthetic needle suitable for superficial skin, which is characterized by comprising a starting device and a disposable medicine injection head which are detachably connected;
the starting device comprises an upper shell, wherein an installation cavity is arranged in the upper shell, a guide hole penetrating through the lower end of the upper shell is arranged below the installation cavity, a limiting plate is arranged in the installation cavity and is in sliding connection with the bottom of the installation cavity, one end of the limiting plate is matched with a reset spring to be connected with the side wall of the installation cavity, and a starting button is arranged at the other end of the limiting plate; the limiting plate is provided with a limiting hole, the top of the movable rod is matched with the transmitting spring to be connected with the top of the mounting cavity, the lower part of the movable rod penetrates through the limiting hole to be matched with the guide hole, the movable rod is provided with a limiting block, and the side wall of the guide hole is provided with a guide groove matched with the limiting block; the limiting block is arranged on the limiting plate and matched with the limiting hole to limit, so that the transmitting spring is compressed, and the limiting plate compresses the reset spring to enable the movable rod to move up and down;
the disposable medicine injection head comprises a lower shell, a medicine liquid cavity is formed in the lower shell, a needle body is arranged at the bottom end of the medicine liquid cavity, a piston is arranged at the top of the medicine liquid cavity, and the piston corresponds to the lower end of the movable rod.
Preferably, the actuating device and the disposable medicine injection head are connected in a threaded manner through the upper shell and the lower shell.
As another preferable mode, the starting device and the disposable medicine injection head are connected in a clamping connection mode through the upper shell and the lower shell.
Further, the upper shell is provided with a clamping column, and the lower shell is provided with a buckle.
Further, the buckle is provided with an action part, and the buckle is deformed and opened by pressing the action part.
Preferably, an end cover is arranged at the top of the mounting cavity, and the end cover is detachably connected with the mounting cavity.
Preferably, the disposable medicine injection head is provided with a protective cover, and the protective cover is detachably connected with the lower shell.
Preferably, the bottom of the limiting plate is provided with a sliding block, the bottom of the installation cavity is provided with a sliding groove, and the limiting plate and the bottom of the installation cavity are in sliding connection through the sliding block matched with the sliding groove.
The operation method and the working principle are as follows: the limiting plate moves to compress the reset spring only by pressing the starting button, so that the limiting hole cancels the limitation of the limiting block, and the movable rod drives the limiting block to move downwards due to the acting force of the transmitting spring, and the lower end of the movable rod pushes the piston to rapidly complete the injection action. The disposable drug injection head is then removed and discarded, and the activation device is then reset. Specifically, the starting button is pressed, the movable rod is pushed to move upwards until the limiting block is arranged on the limiting plate, then the starting button is loosened, the reset spring drives the limiting plate to reset, and the limiting hole limits the displacement of the limiting block again to complete limiting of the movable rod.
The beneficial effects are that: the disposable small injection head is provided, so that the disposable small injection head can be provided with a very fine needle body, and the pain of a patient can be obviously relieved;
the disposable medicine injection head is arranged, one patient corresponds to one needle, the medicine is easy to control after the injection is finished, and medicine waste is reduced; but also can stop cross infection;
the utility model has simple operation, and can inject local anesthesia liquid medicine into the skin of a patient only by pressing the button switch.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic view of a cross-sectional plan view of A-A;
FIG. 3 is a schematic cross-sectional view of a disposable drug injection head;
FIG. 4 is a schematic cross-sectional view of another embodiment of the present utility model;
in the figure, an upper shell 1, a mounting cavity 11, a guide hole 12, a threaded hole 13, an end cover 14, a firing spring 2, a movable rod 3, a limiting block 31, a guide groove 311, a limiting plate 4, a limiting hole 41, a sliding block 42, a sliding groove 421, a return spring 5, a disposable medicine injection head 6, a medicine liquid cavity 61, a piston 62, a needle 63, a buckle 64, an action part 641 and a protective cover 65.
Detailed Description
The utility model will be further described with reference to specific examples and figures.
Figures 1 to 3 show a local anesthetic needle suitable for superficial skin, characterized by comprising an actuation means and a disposable drug injection head 6 removably connected;
the starting device comprises an upper shell 1, wherein an installation cavity 11 is formed in the upper shell 1, a guide hole 12 penetrating through the lower end of the upper shell 1 is formed below the installation cavity 11, a limiting plate 4 is arranged in the installation cavity 11, the limiting plate 4 is slidably connected with the bottom of the installation cavity 11, one end of the limiting plate 4 is matched with a reset spring 5 to be connected with the side wall of the installation cavity 11, and a starting button is arranged at the other end of the limiting plate; the limiting plate 4 is provided with a limiting hole 41, the top of the movable rod 3 is matched with the transmitting spring 2 to be connected with the top of the mounting cavity 11, the lower part of the movable rod passes through the limiting hole 41 to be matched with the guide hole 12, the movable rod 3 is provided with a limiting block 31, and the side wall of the guide hole 12 is provided with a guide groove 311 matched with the limiting block 31; the limiting block 31 is arranged on the limiting plate 4 and matched with the limiting hole 41 to limit, so that the transmitting spring 2 is compressed, and the limiting plate 4 compresses the reset spring 5 to enable the movable rod 3 to move up and down;
the disposable medicine injection head 6 comprises a lower shell, a medicine liquid cavity 61 is formed in the lower shell, a needle 63 is arranged at the bottom end of the medicine liquid cavity 61, the needle 63 and the lower shell are integrally arranged, a piston 62 is arranged at the top of the needle, and the piston 62 corresponds to the lower end of the movable rod 3.
In a preferred alternative embodiment, the actuating device and the disposable medicine injection head 6 are connected by screwing the upper casing 1 and the lower casing, as shown in fig. 1, one of which is shown in this embodiment, and a threaded hole 13 is provided at the lower end of the upper casing 1.
As shown in fig. 4, in a preferred embodiment, the actuating device and the disposable medicine injection head 6 are connected by clamping connection of the upper casing 1 and the lower casing. The upper housing 1 is provided with a clamping post, and the lower housing is provided with a clamping buckle 64. The latch 64 is provided with an acting portion 641, and the latch 64 is deformed and opened by pressing the acting portion 641.
In a preferred further embodiment, an end cover 14 is disposed on top of the mounting cavity 11, and the end cover 14 and the mounting cavity 11 are detachably connected.
In a preferred further embodiment, the disposable drug injection head 6 is provided with a protective cap 65, said cap 65 being detachably connected to the lower housing for protecting the drug before being mounted in the activation device.
In another preferred embodiment, the bottom of the limiting plate 4 is provided with a sliding block 42, the bottom of the installation cavity 11 is provided with a sliding groove 421, and the bottom of the limiting plate 4 and the bottom of the installation cavity 11 are in sliding connection through the sliding block 42 and the sliding groove 421.
The operation method and the working principle are as follows: only the start button is needed to be pressed, the limiting plate 4 moves to compress the reset spring 5, so that the limiting hole 41 removes the limitation on the limiting block 31, the movable rod 3 drives the limiting block 31 to move downwards due to the acting force of the emission spring 2, and the lower end of the movable rod 3 pushes the piston 62 to rapidly complete the injection action. The disposable drug injection head 6 is then removed and discarded, and the activation device is then reset. Specifically, the start button is pressed to push the movable rod 3 to move upwards until the limiting block 31 is placed on the limiting plate 4, then the start button is loosened, the reset spring 5 drives the limiting plate 4 to reset, and the limiting hole 41 limits the displacement of the limiting block 31 again to complete limiting of the movable rod 3.
The disposable small injection head is provided, so that the special very fine and short needle 63 can be provided, and the pain of a patient can be obviously relieved; the disposable medicine injection head is arranged, one patient corresponds to one needle, the injection is stopped immediately after the injection, the medicine amount is easy to control, and the medicine waste is reduced; but also can stop cross infection; the utility model has simple operation, and can inject local anesthesia liquid medicine into the skin of a patient only by pressing the button switch.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. A local anesthetic needle suitable for superficial skin, which is characterized by comprising a starting device and a disposable medicine injection head which are detachably connected;
the starting device comprises an upper shell, wherein an installation cavity is arranged in the upper shell, a guide hole penetrating through the lower end of the upper shell is arranged below the installation cavity, a limiting plate is arranged in the installation cavity and is in sliding connection with the bottom of the installation cavity, one end of the limiting plate is matched with a reset spring to be connected with the side wall of the installation cavity, and a starting button is arranged at the other end of the limiting plate; the limiting plate is provided with a limiting hole, the top of the movable rod is matched with the transmitting spring to be connected with the top of the mounting cavity, the lower part of the movable rod penetrates through the limiting hole to be matched with the guide hole, the movable rod is provided with a limiting block, and the side wall of the guide hole is provided with a guide groove matched with the limiting block; the limiting block is arranged on the limiting plate and matched with the limiting hole to limit, so that the transmitting spring is compressed, and the limiting plate compresses the reset spring to enable the movable rod to move up and down;
the disposable medicine injection head comprises a lower shell, a medicine liquid cavity is formed in the lower shell, a needle body is arranged at the bottom end of the medicine liquid cavity, a piston is arranged at the top of the medicine liquid cavity, and the piston corresponds to the lower end of the movable rod.
2. The local anesthetic needle adapted for superficial skin according to claim 1, wherein said actuating means and said disposable medicine injection head are connected by means of screw threads through said upper housing and said lower housing.
3. The local anesthetic needle adapted for superficial skin according to claim 1, wherein said actuating means and said disposable drug injection head are connected by means of a snap-fit connection of an upper housing and a lower housing.
4. A local anesthetic needle as claimed in claim 3, wherein the upper housing is provided with a locking post and the lower housing is provided with a buckle.
5. The local anesthetic needle adapted for superficial skin according to claim 4, wherein said clasp is provided with an action portion, and the clasp is deformed to be opened by pressing said action portion.
6. The local anesthetic needle adapted for superficial skin according to claim 1, wherein an end cap is provided at a top of said mounting cavity, said end cap being detachably connected to the mounting cavity.
7. The local anesthetic needle adapted for superficial skin according to claim 1, wherein said disposable medicine injection head is provided with a protective cover detachably connected to the lower housing.
8. The local anesthetic needle suitable for superficial skin according to claim 1, wherein the bottom of the limiting plate is provided with a sliding block, the bottom of the installation cavity is provided with a sliding groove, and the limiting plate and the bottom of the installation cavity are in sliding connection through the sliding block matched with the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223225668.5U CN219743626U (en) | 2022-12-03 | 2022-12-03 | Local anesthetic needle suitable for superficial skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223225668.5U CN219743626U (en) | 2022-12-03 | 2022-12-03 | Local anesthetic needle suitable for superficial skin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219743626U true CN219743626U (en) | 2023-09-26 |
Family
ID=88074972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223225668.5U Active CN219743626U (en) | 2022-12-03 | 2022-12-03 | Local anesthetic needle suitable for superficial skin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219743626U (en) |
-
2022
- 2022-12-03 CN CN202223225668.5U patent/CN219743626U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |