CN114588409B - Low-pressure needleless injection device - Google Patents
Low-pressure needleless injection device Download PDFInfo
- Publication number
- CN114588409B CN114588409B CN202210196676.7A CN202210196676A CN114588409B CN 114588409 B CN114588409 B CN 114588409B CN 202210196676 A CN202210196676 A CN 202210196676A CN 114588409 B CN114588409 B CN 114588409B
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- Prior art keywords
- injection
- gun barrel
- rod
- piece
- liquid
- Prior art date
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- 238000002347 injection Methods 0.000 title claims abstract description 172
- 239000007924 injection Substances 0.000 title claims abstract description 172
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 210000001519 tissue Anatomy 0.000 claims abstract description 12
- 238000001802 infusion Methods 0.000 claims abstract description 10
- 210000003205 muscle Anatomy 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000001054 cortical effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000520 microinjection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
- A61M5/3007—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules with specially designed jet passages at the injector's distal end
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
Abstract
The invention discloses a low pressure needleless injection device, comprising: an injection barrel; the injection head is coaxially fixed at one end of the injection gun barrel; the infusion channel is arranged at one side of the injection gun barrel, one end of the infusion channel is detachably communicated with an external liquid supply bottle and is used for conveying injection liquid to one end, close to the injection head, in the injection gun barrel; the low-pressure boosting assembly is coaxially arranged in the injection gun barrel in a relatively sliding manner and is used for jetting injection liquid in the injection gun barrel in a straight line and entering human tissues; and the external extrusion shrinkage component is arranged on the injection gun barrel and positioned on the injection head, and repeatedly extrudes the injection part in advance when the injection head performs needleless injection, so that muscle group tissues in the injection part area can reach a relaxed state, and the injection part is secondarily pressed after needleless injection, so that the injection liquid can be diffused into the cortex.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a low-pressure needleless injection device.
Background
Needleless injection is performed without using a needle in injection of a drug, so that a liquid drug is ejected straight at a high speed with a very small diameter, and the drug is introduced into a living body through the skin by its own kinetic energy in a water column penetration mode or in an atomizing penetration mode; the current needleless injection is relatively widely used, and can effectively overcome the needle terrorism of most groups; however, the needleless injection in the prior art is often hindered by the contraction of human cortical muscle group tissue, which is particularly characterized by skin tightening caused by tension stimulus, so that the needleless injection jet is difficult to quickly penetrate, and the needleless injection is relatively difficult because the elasticity and the permeability of the skin of different patients can be changed relative to other patients or different parts of the body of the patients; in particular, in a small amount of injection, the needleless injector can provide a relatively weak power source, and the penetration effect is not obvious.
Accordingly, a low pressure needleless injection device is provided by those skilled in the art to solve the problems set forth in the background above.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a low pressure needleless injection device, comprising:
an injection barrel;
the injection head is coaxially fixed at one end of the injection gun barrel;
the infusion channel is arranged at one side of the injection gun barrel, one end of the infusion channel is detachably communicated with an external liquid supply bottle and is used for conveying injection liquid to one end, close to the injection head, in the injection gun barrel;
the low-pressure boosting assembly is coaxially arranged in the injection gun barrel in a relatively sliding manner and is used for jetting injection liquid in the injection gun barrel in a straight line and entering human tissues; and
the external extrusion shrinkage component is arranged on the injection gun barrel and located on the injection head, and repeatedly extrudes an injection part in advance when the injection head performs needleless injection, so that muscle group tissues in the injection part area can reach a relaxed state, and the injection part is secondarily pressed after needleless injection, so that injection liquid can be diffused into the cortex.
Further, preferably, the low-pressure boosting assembly includes:
the inner air pressure tube is coaxially fixed in the injection gun barrel;
the fixed end piece is coaxially arranged in the inner air pressure pipe, a discharge port is arranged on the fixed end piece, an air pressure discharge pump is arranged outside the injection gun barrel, and one end of the air pressure discharge pump is communicated with the discharge port;
the boosting plug can be arranged in the inner air pressure pipe in a relatively sliding manner;
the compression springs are transversely and symmetrically connected to the fixed end piece, and one end of each compression spring is communicated with the corresponding boosting plug;
the liquid storage bin is coaxially arranged on one side, far away from the fixed end piece, of the injection gun barrel, and a sealing shaft plug is slidably arranged in the liquid storage bin;
the penetrating rod is transversely connected between the boosting plug and the sealing shaft plug; and
the pressurizing buffer device is arranged in the injection gun barrel, and one end of the pressurizing buffer device is connected with the boosting plug.
Further, preferably, the booster buffer device includes:
sealing the tube;
an inner seal member slidably disposed within the seal tube;
the transmission rod is coaxially and relatively slidably arranged in the sealing tube in a sealing manner, and one end of the transmission rod extends out of the sealing tube and is connected with the boosting plug;
and the supporting spring is transversely and symmetrically connected between the transmission rod and the inner sealing piece.
Further, preferably, the method further comprises:
and one end of the inner branch pipe is communicated with the sealing pipe through an inner connecting pipe.
Further, preferably, the outer squeeze shrinkage assembly includes:
the mounting sleeve is coaxially sleeved outside the injection gun barrel;
the fixing piece is fixed on the injection gun barrel and is positioned in the mounting sleeve;
the adjusting pressing pieces are arranged in a plurality of circumferential arrays, and each adjusting pressing piece is rotatably arranged on the fixing piece;
the driving shaft is arranged in the mounting sleeve in a relatively rotatable manner, and a linkage rod is rotatably arranged on the driving shaft;
the inner supporting rods are arranged in one-to-one correspondence with the adjusting pressing pieces, and one end of each inner supporting rod is rotationally connected to the adjusting pressing piece; and
the limiting rod is arranged in the mounting sleeve in a relatively sliding manner, and two ends of the limiting rod are respectively connected with the inner supporting rod and the linkage rod.
Further, preferably, the adjusting pressing member includes:
the fixing frame body is rotatably arranged on the fixing piece;
the fine-tuning telescopic rod is hinged to the fixing piece, and the output end of the fine-tuning telescopic rod is connected with the fixing frame;
the pressing piece is rotatably arranged at one end of the fixing frame body, and the cross section of the pressing piece is constructed into an arc-shaped structure; and
the telescopic guide rod is connected with one end of the fixing frame body, the other end of the telescopic guide rod is connected with the propping piece, and one end of the inner supporting rod is connected with the other side of the propping piece.
Further, preferably, the telescopic guide rod is configured as a two-stage telescopic structure, and a return spring is arranged in the telescopic guide rod.
Further, preferably, a micro-fluid pipe is coaxially arranged in the injection head in a penetrating way, one end of the micro-fluid pipe is communicated with the injection gun barrel, a top groove is further formed in one end of the injection head, and the micro-fluid pipe locally extends out of the top groove.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, a low-pressure boosting assembly is arranged in the injection gun barrel, and the low-pressure boosting assembly can jet injection liquid in the injection gun barrel from the injection head so as to realize needleless injection; the device also comprises a pressurizing and buffering device, especially in the needleless injection of the microinjection liquid, the pressurizing and buffering device can additionally provide jet pressure and perform buffering action on the boosting plug when jet flow is finished, so that the impact vibration of the boosting plug is reduced, and the injection gun barrel can be always vertical to the cortex of the injection area; and the outer extrusion shrinkage assembly is particularly further provided, and the needleless injection region cortex is subjected to inner shrinkage extrusion mainly through the adjusting pressing piece in advance, so that the tension hardening phenomenon of muscle group tissues is relieved, jet penetration is facilitated, the injection region can be pressed secondarily after injection, and the diffusion effect of injection is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a low-voltage boosting assembly according to the present invention;
FIG. 3 is a schematic view of a pressurizing buffer device according to the present invention;
FIG. 4 is a schematic view of an outer squeeze shrinkage assembly according to the present invention
FIG. 5 is a schematic view of the construction of the adjustment press of the present invention;
in the figure: the injection device comprises a syringe barrel, a low-pressure boosting component, a 21 inner air pressure pipe, a 22 fixed end piece, a 23 boosting plug, a 24 compression spring, a 25 air pressure discharge pump, a 26 liquid storage bin, a 27 sealing shaft plug, a 28 penetrating rod, a 3 transfusion channel, a 4 injection head, a 41 micro liquid pipe, a 5 outer extrusion contraction component, a 51 mounting sleeve, a 52 driving shaft, a 53 inner supporting rod, a 54 fixed piece, a 6 supercharging buffer device, a 61 sealing pipe, a 62 inner sealing piece, a 63 transmitting rod, a 64 supporting spring, a 65 inner branch pipe, a 66 inner connecting pipe, a 7 regulating pressing piece, a 71 fixing frame body, a 72 fine adjustment telescopic rod, a 73 pressing piece and a 74 telescopic guide rod.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a low pressure needleless injection device includes:
an injection barrel 1;
the injection head 4 is coaxially fixed at one end of the injection gun barrel 1;
the infusion channel 3 is arranged at one side of the injection gun tube 1, one end of the infusion channel 3 is detachably communicated with an external liquid supply bottle (not shown in the figure) and is used for conveying injection liquid to one end, close to the injection head 4, of the injection gun tube 1;
the low-pressure boosting assembly 2 is coaxially arranged in the injection gun barrel 1 in a relatively sliding manner, and the low-pressure boosting assembly 2 is used for jetting injection liquid in the injection gun barrel 1 in a straight line and entering human tissues; and
the external extrusion contraction assembly 5 is arranged on the injection gun barrel 1 and positioned on the injection head 4, and the external extrusion contraction assembly 5 repeatedly extrudes an injection part in advance when the injection head 4 performs needleless injection, so that muscle group tissues in the injection part area can reach a relaxed state, and performs secondary pressing on the injection part after needleless injection, so that injection liquid can be diffused into a cortex; it should be noted that, in the injection, the low pressure boosting component should be in injection barrel inside one side, carries the injection of required injection volume to injection barrel through the infusion passageway, and the low pressure boosting component needs to progressively carry out displacement slip this moment, conveniently discharges the gaseous in the injection from the injection head to make the injection reach injection head department.
In this embodiment, the low-pressure boosting assembly 2 includes:
an inner air pressure tube 21 coaxially fixed in the injection gun tube 1;
a fixed end piece 22 coaxially arranged in the inner air pressure pipe 21, wherein a discharge port is arranged on the fixed end piece 22, an air pressure discharge pump 25 is arranged outside the injection gun barrel 1, and one end of the air pressure discharge pump 25 is communicated with the discharge port;
a boost plug 23 slidably disposed in the inner air pressure pipe 21;
a compression spring 24 transversely and symmetrically connected to the fixed end piece 22, wherein one end of the compression spring 24 is communicated with the boosting plug 23;
a liquid storage bin 26 coaxially arranged on one side of the injection gun tube 1 away from the fixed end piece 22, wherein a sealing shaft plug 27 is slidably arranged in the liquid storage bin 26;
a penetration rod 28 transversely connected between the boost plug 23 and the seal shaft plug 27; and
the pressurizing buffer device 6 is arranged in the injection gun barrel 1, one end of the pressurizing buffer device 6 is connected with the boosting plug 23, wherein, especially in the injection of micro injection liquid without needle, after the liquid storage bin in the injection gun barrel completes the work of exhausting the injection liquid, the air pressure can be exhausted to the inner air pressure pipe by the air pressure exhaust pump at the moment, so that the boosting plug can move towards the direction far away from one side of the injection head, after a small amount of displacement, the injection liquid can be filled in the liquid storage bin, the pressurizing buffer device can synchronously boost pressure, the injection pushing pressure is improved, and the injection head can form a jet slideway at the moment, thereby ensuring the penetration effect of the needleless jet.
As a preferred embodiment, the booster buffer device 6 includes:
a seal tube 61;
an inner seal 62 slidably disposed within the seal tube 61;
a transmission rod 63, which is coaxially and relatively slidably arranged in the sealing tube 61 in a sealing manner, wherein one end of the transmission rod 63 extends out of the sealing tube 61 and is connected with the boosting plug 23;
the supporting spring 64 is transversely and symmetrically connected between the transmitting rod 63 and the inner sealing member 62, wherein the outer air pump (not shown in the figure) is used for exhausting the sealing tube, so that the inner sealing member can be displaced to the middle part of the sealing tube under the action of negative pressure, and at the moment, the supporting spring is in a stretching state to cooperate with the compression spring to boost the boosting plug.
In this embodiment, the method further includes:
the inner branch pipe 65 is arranged in the injection gun barrel 1, one end of the inner branch pipe 65 is communicated with the sealing pipe 61 through the inner connecting pipe 66, wherein gas in the sealing pipe can be conveyed into the inner branch pipe through the inner connecting pipe, and the inner branch pipe reaches a gas saturation state after needleless injection is completed, and at the moment, the inner branch pipe can be matched with the inner sealing piece to buffer, so that the internal impact effect of the boosting plug is reduced, and the use experience is improved.
In this embodiment, the outer squeeze shrinkage assembly 5 includes:
the mounting sleeve 51 is coaxially sleeved outside the injection gun barrel 1;
a fixing member 54 fixed to the injection tube 1 in the mounting sleeve 51;
the adjusting pressing pieces 7 are arranged in a plurality of circumferential arrays, and each adjusting pressing piece 7 is rotatably arranged on the fixing piece 54;
a driving shaft 52 rotatably disposed in the mounting sleeve 51, wherein the driving shaft 52 is rotatably provided with a linkage rod;
the inner supporting rods 53 are arranged in one-to-one correspondence with the adjusting pressing pieces 7, and one end of each inner supporting rod 53 is rotatably connected to the adjusting pressing piece 7; and
the limiting rod is arranged in the mounting sleeve 51 in a relatively sliding manner, two ends of the limiting rod are respectively connected with the inner supporting rod 53 and the linkage rod, and the fact that before the limiting rod is used, the adjusting pressing pieces need to be pressed against the cortex of a human body to enable the injection head to be in close contact with the cortex, and then the driving shaft drives the adjusting pressing pieces to be relatively matched with the needle-free injection area to perform cortex shrinkage extrusion under the condition of medium and high speed, so that the cortex muscle group tissue is in a loose state, and needle-free injection is facilitated.
In this embodiment, the adjusting pressing member 7 includes:
a fixing frame body 71 rotatably provided on the fixing member 54;
the fine tuning telescopic rod 72 is hinged on the fixing piece 54, and the output end of the fine tuning telescopic rod 72 is connected with the fixing frame 71;
a pressing member 73 rotatably provided at one end of the fixing frame body 71, the cross section of the pressing member 73 being constructed in an arc-shaped structure; and
the telescopic guide rod 74 is connected to one end of the fixing frame 71, the other end of the telescopic guide rod 74 is connected to the propping piece 73, one end of the inner supporting rod 53 is connected to the other side of the propping piece 73, especially in use, the telescopic action of the fine-tuning telescopic rod is matched with the rotation of the driving shaft at different rotation speeds, so that the propping piece can be in two different pressing contact states of inward extrusion shrinkage or outward expansion pressing to cope with the pressing release of cortical muscle group tissue before needleless injection or the auxiliary outward expansion of injection after needleless injection.
In a preferred embodiment, the telescopic guide 74 is configured as a two-stage telescopic structure, and a return spring is disposed in the telescopic guide 74.
In this embodiment, the micro-fluid tube 41 is coaxially disposed in the injection head 4, one end of the micro-fluid tube 41 is connected with the injection barrel 1, and one end of the injection head 4 is further provided with a top groove, the micro-fluid tube 41 partially protrudes out of the top groove, especially in injection use, the injection head is in close contact with the cortex and cooperates with the top pressing piece to compress the cortex, so that the cortical muscle group can protrude into the top groove, and the end of the micro-fluid tube is retracted, so that after needleless injection, the injection can be fully diffused when the cortex recovers the original tightness.
Specifically, in the low pressure needleless injection, the injection is input to a liquid storage bin in an injection gun barrel through an infusion channel, at the moment, the injection head is vertically pressed against the cortex of a human body, the cortex region of the human body is enabled to achieve a loose state under the extrusion action of an external extrusion shrinkage component, a plurality of ring layers are formed, at the moment, the cortex at the micro liquid pipe is in an adduction state, the low pressure boosting component is used for boosting so that the injection can jet and be sprayed out from the micro liquid pipe, and after the injection is completed, the adjusting pressing piece can press the injection part for the second time again, so that the injection can be diffused into the cortex.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. A low pressure needleless injection device, characterized by: it comprises the following steps:
an injection barrel (1);
the injection head (4) is coaxially fixed at one end of the injection gun barrel (1);
the infusion channel (3) is arranged on one side of the injection gun tube (1), one end of the infusion channel (3) is detachably communicated with an external liquid supply bottle and is used for conveying injection liquid to one end, close to the injection head (4), in the injection gun tube (1);
the low-pressure boosting assembly (2) is coaxially arranged in the injection gun barrel (1) in a relatively sliding manner, and the low-pressure boosting assembly (2) is used for jetting injection liquid in the injection gun barrel (1) in a straight line and entering human tissues; and
the external extrusion contraction assembly (5) is arranged on the injection gun barrel (1) and positioned on the injection head (4), the external extrusion contraction assembly (5) repeatedly extrudes an injection part in advance when the injection head (4) performs needleless injection, so that muscle group tissues in the injection part area can reach a relaxed state, and the injection part is secondarily pressed after needleless injection, so that injection liquid can be diffused into a cortex;
the low-pressure boosting assembly (2) comprises:
an inner air pressure tube (21) coaxially fixed in the injection gun tube (1);
the fixed end piece (22) is coaxially arranged in the inner air pressure pipe (21), a discharge port is formed in the fixed end piece (22), an air pressure discharge pump (25) is arranged outside the injection gun barrel (1), and one end of the air pressure discharge pump (25) is communicated with the discharge port;
a boost plug (23) which is arranged in the inner air pressure pipe (21) in a relatively sliding way;
the compression springs (24) are transversely and symmetrically connected to the fixed end piece (22), and one ends of the compression springs (24) are communicated with the boosting plugs (23);
the liquid storage bin (26) is coaxially arranged on one side, away from the fixed end piece (22), of the injection gun tube (1), and a sealing shaft plug (27) is arranged in the liquid storage bin (26) in a sliding manner;
a penetration rod (28) transversely connected between the boost plug (23) and the sealing shaft plug (27); and
the pressurizing buffer device (6) is arranged in the injection gun barrel (1), and one end of the pressurizing buffer device (6) is connected with the boosting plug (23);
the supercharging buffer device (6) comprises:
a seal tube (61);
an inner seal (62) slidably disposed within the seal tube (61);
the transmission rod (63) is coaxially and relatively slidably arranged in the sealing tube (61) in a sealing way, and one end of the transmission rod (63) extends out of the sealing tube (61) and is connected with the boosting plug (23);
a support spring (64) which is transversely and symmetrically connected between the transfer rod (63) and the inner seal (62);
the outer squeeze retraction assembly (5) comprises:
the mounting sleeve (51) is coaxially sleeved outside the injection gun barrel (1);
the fixing piece (54) is fixed on the injection gun barrel (1) and is positioned in the mounting sleeve (51);
the adjusting pressing pieces (7) are arranged in a plurality of circumferential arrays, and each adjusting pressing piece (7) is rotatably arranged on the fixing piece (54);
the driving shaft (52) is rotatably arranged in the mounting sleeve (51), and the driving shaft (52) is rotatably provided with a linkage rod;
the inner supporting rods (53) are arranged in one-to-one correspondence with the adjusting pressing pieces (7), and one end of each inner supporting rod (53) is rotatably connected to the corresponding adjusting pressing piece (7); and
the limiting rod is arranged in the mounting sleeve (51) in a relatively sliding manner, and two ends of the limiting rod are respectively connected with the inner supporting rod (53) and the linkage rod;
the adjustment presser (7) comprises:
the fixing frame body (71) is rotatably arranged on the fixing piece (54);
the fine-tuning telescopic rod (72) is hinged to the fixing piece (54), and the output end of the fine-tuning telescopic rod (72) is connected with the fixing frame body (71);
a pressing member (73) rotatably provided at one end of the fixing frame body (71), the cross section of the pressing member (73) being constructed in an arc-shaped structure; and
the telescopic guide rod (74) is connected to one end of the fixing frame body (71), the other end of the telescopic guide rod (74) is connected with the propping piece (73), and one end of the inner supporting rod (53) is connected with the other side of the propping piece (73).
2. A low pressure needleless injection device as claimed in claim 1, in which: further comprises:
and the inner branch pipe (65) is arranged in the injection gun pipe (1), and one end of the inner branch pipe (65) is communicated with the sealing pipe (61) through an inner connecting pipe (66).
3. A low pressure needleless injection device as claimed in claim 1, in which: the telescopic guide rod (74) is constructed into a two-section telescopic structure, and a return spring is arranged in the telescopic guide rod (74).
4. A low pressure needleless injection device as claimed in claim 3 in which: the injection head (4) is internally and coaxially provided with a micro-liquid pipe (41) in a penetrating way, one end of the micro-liquid pipe (41) is communicated with the injection gun barrel (1), one end of the injection head (4) is also provided with a top groove, and the micro-liquid pipe (41) locally extends out of the top groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196676.7A CN114588409B (en) | 2022-03-02 | 2022-03-02 | Low-pressure needleless injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196676.7A CN114588409B (en) | 2022-03-02 | 2022-03-02 | Low-pressure needleless injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114588409A CN114588409A (en) | 2022-06-07 |
| CN114588409B true CN114588409B (en) | 2023-12-08 |
Family
ID=81815634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210196676.7A Active CN114588409B (en) | 2022-03-02 | 2022-03-02 | Low-pressure needleless injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114588409B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11137684A (en) * | 1997-11-12 | 1999-05-25 | Hiroshi Oya | Indolent and safe syringe |
| JP2002078800A (en) * | 2000-09-05 | 2002-03-19 | Eisuke Fujimoto | Needleless syringe |
| CN206381458U (en) * | 2016-10-11 | 2017-08-08 | 广州市拜沃思生物科技有限公司 | A kind of multi-level noninvasive cell introducing apparatus |
| CN109999277A (en) * | 2019-03-29 | 2019-07-12 | 南京市江宁医院 | A kind of low pressure needleless injector |
| CN112533655A (en) * | 2018-08-03 | 2021-03-19 | 株式会社大赛璐 | Needleless injector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1476210B1 (en) * | 2002-02-11 | 2008-09-24 | Antares Pharma, Inc. | Intradermal injector |
-
2022
- 2022-03-02 CN CN202210196676.7A patent/CN114588409B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11137684A (en) * | 1997-11-12 | 1999-05-25 | Hiroshi Oya | Indolent and safe syringe |
| JP2002078800A (en) * | 2000-09-05 | 2002-03-19 | Eisuke Fujimoto | Needleless syringe |
| CN206381458U (en) * | 2016-10-11 | 2017-08-08 | 广州市拜沃思生物科技有限公司 | A kind of multi-level noninvasive cell introducing apparatus |
| CN112533655A (en) * | 2018-08-03 | 2021-03-19 | 株式会社大赛璐 | Needleless injector |
| CN109999277A (en) * | 2019-03-29 | 2019-07-12 | 南京市江宁医院 | A kind of low pressure needleless injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114588409A (en) | 2022-06-07 |
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