CN118079140B - Injection device with controllable injection speed - Google Patents
Injection device with controllable injection speed Download PDFInfo
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- CN118079140B CN118079140B CN202410462066.6A CN202410462066A CN118079140B CN 118079140 B CN118079140 B CN 118079140B CN 202410462066 A CN202410462066 A CN 202410462066A CN 118079140 B CN118079140 B CN 118079140B
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- outer cylinder
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- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 230000036461 convulsion Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
- A61M5/3129—Syringe barrels
- A61M5/3137—Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
-
- 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
- A61M2005/3143—Damping means for syringe components executing relative movements, e.g. retarders or attenuators slowing down or timing syringe mechanisms
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an injection device with controllable injection speed, which comprises an injector body, wherein the injector body comprises an outer cylinder, side fins arranged at the lower end of the outer cylinder, a needle head arranged at the upper end of the outer cylinder, and a piston rod movably inserted into the outer cylinder: the side surface of the side fin is formed with an inserting groove; the injection device also comprises a controller assembly arranged on the side surface of the injector body, wherein the controller assembly comprises a sealing outer cylinder, a interception push rod and an adjusting assembly; according to the injection device, too fast injection can be avoided by installing the controller assembly; the injection device can also adjust the interception effect of the controller assembly through the adjusting assembly; according to the injection device, the shutoff push rod can reach the minimum shutoff state rapidly through the quick discharging device, and the shutoff push rod of the controller assembly can be pulled backwards to reset conveniently.
Description
Technical Field
The application relates to the technical field of machinery, in particular to an injection device with controllable injection speed.
Background
The syringe is prone to over-rapid bolus injection during daily use. I.e. the sudden force applied by the operator inadvertently causes a rapid injection of the medical fluid in the syringe into the patient. Too fast bolus injections not only increase the pain and risk to the patient, but may also affect the therapeutic effect and safety.
The prior art generally uses devices such as a syringe pump to achieve stable injection, but is difficult to be widely used because of complex structure and difficulty in portability, so that it is required to design an injection device which can be used in a portable manner with a compact structure.
Disclosure of Invention
The utility model provides a controllable injection device of injection speed, includes the syringe body, the syringe body includes the urceolus, sets up in the side wing of urceolus lower extreme, sets up in the syringe needle of urceolus upper end, the piston rod of movably inserting in locating the urceolus:
the side surface of the side fin is formed with an inserting groove;
the injection device also comprises a controller assembly arranged on the side surface of the injector body, wherein the controller assembly comprises a sealing outer cylinder, a interception push rod and an adjusting assembly;
The sealing outer cylinder comprises a hollow cylindrical outer cylinder body with an opening at the rear end, an upper stop ring formed at the lower half part of the outer wall of the outer cylinder body, a lower stop ring formed at the lower end of the outer wall of the outer cylinder body, and a sealing gasket formed at the inner wall of the lower stop ring;
The intercepting push rod comprises a push-pull rod body, a fixed chuck arranged at the lower end of the left side of the push-pull rod body and used for clamping a piston rod, a lower round hole arranged at the lower end of the push-pull rod body, a spring round cavity formed at the upper half part of the push-pull rod body and communicated with the lower round hole, a screw round cavity arranged above the spring round cavity, side longitudinal holes circumferentially uniformly distributed on the outer wall of the screw round cavity, a sealing piston arranged at the upper end of the outer wall of the push-pull rod body and in sealing contact with the inner wall of the outer cylinder body, an upper blind hole formed at the upper end surface of the push-pull rod body, and a circulation side hole circumferentially uniformly distributed on the side wall of the upper blind hole;
The adjusting assembly comprises a rotating piece and a translation piece;
The rotary part comprises a rotary lower shaft inserted into the lower round hole, a stop disc formed on the outer wall of the rotary lower shaft and positioned in the round spring cavity, an external threaded rod formed at the upper end of the stop disc and inserted into the round screw cavity, and a reset pressure spring wound on the outer wall of the rotary lower shaft and positioned below the stop disc;
The translation piece is including slidable cover establish the shielding retaining ring of push-pull rod body outer wall and side longitudinal hole department of corresponding, circumference equipartition are in shielding retaining ring inner wall and with the connection inserted bar of side longitudinal hole grafting correspondence one by one, the shaping of connection inserted bar end stop have with the screw thread of external screw rod spiro union.
As a further technical scheme:
The device comprises an annular groove formed in the outer wall of the push-pull rod body, an external thread ring sleeved on the annular groove in a sliding mode, connecting longitudinal rods uniformly distributed above the external thread ring and inserted into a spring circular cavity in the circumferential direction, and spring retainer rings arranged at the upper ends of the connecting longitudinal rods and sleeved on a rotating lower shaft, wherein the spring retainer rings are located at the lower end of the reset pressure spring, and the device further comprises an internal thread pipe screwed on the outer wall of the external thread ring.
As a further technical scheme:
still including being used for quick downward extraction adjusting assembly's quick row device, quick row device includes:
The quick-discharging cavity comprises a communicating side hole, a driven cavity, a driving slot, a middle rotating hole and a pushing side hole, wherein the communicating side hole is arranged at the lower end of the push-pull rod body and communicated with the lower round hole;
The pushing assembly comprises a driven rack, a perforated lug, a transmission ring groove, a middle gear, a driving rack, a pushing connecting rod and an external fingerboard, wherein the driven rack is slidably arranged in the driven cavity, the perforated lug is arranged on the left side of the driven rack and penetrates through the driven cavity, the transmission ring groove is formed on the outer wall of a rotary lower shaft and is in rotary fit with the perforated lug, the middle gear is rotatably arranged in the middle rotary hole and meshed with the driven rack, the driving rack is slidably inserted into the driving slot, the pushing connecting rod is arranged on the right side of the driving rack and penetrates through the pushing side hole, and the external fingerboard is arranged on the side face of the pushing connecting rod.
The beneficial effects are that:
an injection device described in this case, can avoid too fast bolus through the installation of settling the controller assembly:
the closure effect of the closure push rod is weak in a normal state, and the slow injection of the liquid medicine is not influenced; when the force is suddenly and excessively injected, the cut-off effect is obviously enhanced, so that the injection speed of the liquid medicine can be effectively buffered, and discomfort of a patient caused by excessive injection is avoided.
The utility model provides an injection device, still can adjust the shutoff effect of controller assembly through adjusting the assembly:
The lower shaft and the external threaded rod are rotated and rotated to drive the connecting inserted rod and the shielding retainer to move up and down; the degree of shielding the side hole of circulation of shielding the retaining ring is adjusted, the effective flow of the side hole of circulation is adjusted, and the closure effect of the closure push rod under the normal state is adjusted.
According to the injection device, the shutoff push rod can reach the minimum shutoff state rapidly through the quick discharging device, and the shutoff push rod of the controller assembly can be pulled backwards to reset conveniently.
Drawings
FIG. 1 is a schematic view of one embodiment of the syringe body.
Fig. 2 is a top view of the syringe body.
Fig. 3 is a cross-sectional view of the syringe body.
Fig. 4 is a cross-sectional view of an embodiment of the injection device.
FIG. 5 is a cross-sectional view of one embodiment of the controller assembly.
FIG. 6 is a cross-sectional view of one embodiment of the sealed outer barrel.
Fig. 7 is an enlarged schematic view of a portion a in fig. 6.
FIG. 8 is a cross-sectional view of one embodiment of the controller assembly (with the sealed outer barrel removed).
Fig. 9 is a cross-sectional view of one embodiment of a shut-off pushrod.
Fig. 10 is an enlarged schematic view of an embodiment of portion B of fig. 5.
Fig. 11 is an enlarged schematic view of another embodiment of section B of fig. 5.
Fig. 12 is an enlarged schematic view of an embodiment of portion C of fig. 8.
Fig. 13 is an enlarged schematic view of another embodiment of portion C of fig. 8.
In the figure:
6. The injector comprises an injector body, an outer cylinder, a side wing, a needle, a piston rod, an inserting groove and a controller assembly, wherein the injector body, the outer cylinder, the side wing, the needle, the piston rod, the inserting groove and the controller assembly are arranged in sequence, and the injector body, the outer cylinder, the side wing, the needle, the piston rod, the inserting groove and the controller assembly are arranged in sequence;
1. the sealing outer cylinder, 11, an outer cylinder body, 12, an upper stop ring, 13, a lower stop ring, 131, a stop ring gasket and 14, a sealing gasket;
2. the closure push rod, 21, the push-pull rod body, 22, the fixed clamping head, 23, the lower round hole, 24, the spring round cavity, 25, the screw round cavity, 26, the side longitudinal hole, 27, the sealing piston, 28, the upper blind hole, 29 and the flow side hole;
3. The adjusting assembly is 31, a rotating piece 311, a rotating lower shaft 312, a stopping disc 313, an externally threaded rod 314, a reset pressure spring 32, a translation piece 321, a shielding retainer ring 322 and a connecting plug rod;
4. The device comprises a resistance adjusting device 41, an annular groove 42, an external thread ring 43, a connecting longitudinal rod 44, a spring retainer ring 45 and an internal thread pipe;
5. Quick-drain device 51, quick-drain chamber 511, side-hole communication 512, driven chamber 513, driving slot 514, secondary-rotating hole 515, side-hole pushing 52, pushing component 521, driven rack 522, belt Kong Tuer, 523, driving ring groove 524, secondary gear 525, driving rack 526, pushing connecting rod 527, external fingerboard.
Detailed Description
The injection device with controllable injection speed comprises an injector body 6, wherein the injector body 6 comprises an outer barrel 61, side fins 62 arranged at the lower end of the outer barrel 61, a needle 63 arranged at the upper end of the outer barrel 61, and a piston rod 64 movably inserted into the outer barrel 61:
The side surface of the side fin 62 is provided with a splicing groove 65;
The injection device also comprises a controller assembly 7 arranged on the side surface of the injector body 6, wherein the controller assembly 7 comprises a sealing outer cylinder 1, a interception push rod 2 and an adjusting assembly 3;
the sealing outer cylinder 1 comprises a hollow cylindrical outer cylinder body 11 with an opening at the rear end, an upper stop ring 12 formed on the lower half part of the outer wall of the outer cylinder body 11, a lower stop ring 13 formed on the lower end of the outer wall of the outer cylinder body 11, and a sealing gasket 14 formed on the inner wall of the lower stop ring 13;
As a further technical scheme:
The sealed outer cylinder 1 is filled with a fluid medium; still further, the sealed outer cylinder 1 is filled with buffer oil.
As a further technical scheme:
The lower stop ring 13 is of an upper layer and a lower layer of fixed structure, and a gasket groove for accommodating the sealing gasket 14 is formed in the middle of the inner wall of the lower stop ring 13.
As a further technical scheme:
The gasket groove is formed into a tapered groove shape with a wide inside and a narrow outside in the shaft section, and the sealing gasket 14 is formed into a ring shape with a wide inside and a narrow outside in the shaft section.
As a further technical scheme:
a baffle ring gasket 131 is further arranged between the upper layer structure and the lower layer structure of the lower baffle ring 13.
The intercepting push rod 2 comprises a push-pull rod body 21, a fixed chuck 22 arranged at the lower end of the left side of the push-pull rod body 21 and used for clamping a piston rod 64, a lower round hole 23 arranged at the lower end of the push-pull rod body 21, a spring round cavity 24 formed at the upper half part of the push-pull rod body 21 and communicated with the lower round hole 23, a screw round cavity 25 arranged above the spring round cavity 24, side longitudinal holes 26 circumferentially distributed on the outer wall of the screw round cavity 25, a sealing piston 27 arranged at the upper end of the outer wall of the push-pull rod body 21 and in sealing contact with the inner wall of the outer cylinder body 11, an upper blind hole 28 formed at the upper end surface of the push-pull rod body 21, and flow side holes 29 circumferentially distributed on the side wall of the upper blind hole 28;
the adjusting assembly 3 comprises a rotating member 31 and a translating member 32;
The rotating member 31 comprises a rotating lower shaft 311 inserted into the lower circular hole 23, a stop disc 312 formed on the outer wall of the rotating lower shaft 311 and positioned in the spring circular cavity 24, an external threaded rod 313 formed on the upper end of the stop disc 312 and inserted into the screw circular cavity 25, and a reset pressure spring 314 wound on the outer wall of the rotating lower shaft 311 and positioned below the stop disc 312;
The translation part 32 comprises a shielding retainer ring 321 slidably sleeved on the outer wall of the push-pull rod body 21 and corresponding to the side longitudinal holes 26, and connecting inserting rods 322 circumferentially uniformly distributed on the inner wall of the shielding retainer ring 321 and in one-to-one inserting correspondence with the side longitudinal holes 26, and the stop end of the connecting inserting rods 322 is formed with threads screwed with the external threaded rods 313.
As a further technical scheme:
the drag adjusting device 4 comprises an annular groove 41 formed in the outer wall of the push-pull rod body 21, an external thread ring 42 slidably sleeved on the annular groove 41, a connecting longitudinal rod 43 circumferentially and uniformly distributed above the external thread ring 42 and inserted into the spring round cavity 24, and a spring retainer ring 44 arranged at the upper end of the connecting longitudinal rod 43 and sleeved on the rotating lower shaft 311, wherein the spring retainer ring 44 is positioned at the lower end of the reset pressure spring 314, and the drag adjusting device 4 further comprises an internal thread pipe 45 screwed on the outer wall of the external thread ring 42.
As a further technical scheme:
Further comprising a quick release device 5 for quick downward pumping of the adjustment assembly 3, said quick release device 5 comprising:
the quick-discharging chamber 51 comprises a communicating side hole 511 which is arranged at the lower end of the push-pull rod body 21 and communicated with the lower round hole 23, a driven chamber 512 which is arranged at the right side of the communicating side hole 511, a driving slot 513 which is arranged above the right side of the fixed chuck 22 along the up-down direction, a middle rotating hole 514 which is arranged in the fixed chuck 22 and communicated with the driven chamber 512 and the driving slot 513, and a pushing side hole 515 which is arranged at the right side of the driving slot 513;
The pushing assembly 52 comprises a driven rack 521 slidably arranged in the driven chamber 512, a belt Kong Tuer 522 arranged on the left side of the driven rack 521 and penetrating through the driven chamber 512, a transmission ring groove 523 formed on the outer wall of the rotary lower shaft 311 and in rotary fit with the belt Kong Tuer, a middle gear 524 rotatably arranged in the middle rotary hole 514 and meshed with the driven rack 521, a driving rack 525 slidably inserted in the driving slot 513, a pushing connecting rod 526 arranged on the right side of the driving rack 525 and penetrating through the pushing side hole 515, and an external finger plate 527 arranged on the side surface of the pushing connecting rod 526.
The scheme also discloses an injection speed control method, which comprises the following steps:
Step 1, installing a controller assembly 7:
extracting the injection from the syringe body 6 to a proper position;
The sealing outer cylinder 1 is clamped in the inserting grooves 65 of the side wings 62, so that the upper stop ring 12 and the lower stop ring 13 are respectively positioned on the upper end surface and the lower end surface of the side wings 62, and the intercepting push rod 2 is adjusted so that the fixed clamping head 22 clamps the side wings of the piston rod 64 and stops above the piston rod 64;
step 2, intercepting a interception push rod:
pushing the piston rod 64 to make it go upward, driving the interception push rod 2 to go upward;
Fluid above the sealing piston 27 enters a position below the sealing piston 27 after passing through the upper blind hole 28 and the circulating side hole 29;
the flow of the passage is limited, so that an obvious shutoff effect is achieved, and the phenomenon that injection is too fast during injection is avoided.
Still include step 3, adjust the effect of intercepting:
The lower shaft 311 and the external threaded rod 313 are rotated to drive the connecting inserted rod 322 and the shielding retainer ring 321 to move up and down;
the shielding check ring 321 is adjusted to shield the side hole 29, the effective flow of the side hole 29 is adjusted, and the intercepting effect of the intercepting push rod 2 under normal state is adjusted.
And step4, quick reset:
after the injection is finished, the finger dials the external finger plate 527, pushes the connecting rod 526 and drives the rack 525 to move forwards;
The driving rack 525 drives the driven rack 521, the belt Kong Tuer 522 and the rotary lower shaft 311 to retreat through the intermediate gear 524, so as to drive the whole translation member 32 to retreat to the lowest end;
at this time, the opening of the flow-through side hole 29 is maximized, the intercepting effect of the intercepting pushrod 2 is weakest, and then the intercepting pushrod 2 is pulled backward to be reset;
After the reset is completed, the external finger plate 527 is released.
Further comprising step5, adjusting damping:
rotating the inner threaded pipe 45 to drive the outer threaded ring 42, the connecting longitudinal rod 43 and the spring retainer ring 44 to move back and forth;
Further, the compression amount and damping of the rotary lower shaft 311 in a normal state are adjusted;
and further adjusts the damping of the finger in step 4 as it toggles the external finger plate 527.
Claims (7)
1. The utility model provides an injection device of injection speed controllable, includes syringe body (6), syringe body (6) include urceolus (61), set up in side wing (62) of urceolus (61) lower extreme, set up in syringe needle (63) of urceolus (61) upper end, movable piston rod (64) of inserting in urceolus (61), its characterized in that:
the side surface of the side fin (62) is provided with an inserting groove (65);
The injection device also comprises a controller assembly (7) arranged on the side surface of the injector body (6), wherein the controller assembly (7) comprises a sealing outer cylinder (1), a interception push rod (2) and an adjusting assembly (3);
The sealing outer cylinder (1) comprises a hollow cylindrical outer cylinder body (11) with an opening at the rear end, an upper stop ring (12) formed on the lower half part of the outer wall of the outer cylinder body (11), a lower stop ring (13) formed on the lower end of the outer wall of the outer cylinder body (11), and a sealing gasket (14) formed on the inner wall of the lower stop ring (13);
the sealing outer cylinder (1) is filled with a fluid medium;
The intercepting push rod (2) comprises a push-pull rod body (21), a fixed chuck (22) arranged at the lower end of the left side of the push-pull rod body (21) and used for clamping a piston rod (64), a lower round hole (23) arranged at the lower end of the push-pull rod body (21), a spring round cavity (24) formed at the upper half part of the push-pull rod body (21) and communicated with the lower round hole (23), a screw round cavity (25) arranged above the spring round cavity (24), side longitudinal holes (26) circumferentially distributed on the outer wall of the screw round cavity (25), a sealing piston (27) arranged at the upper end of the outer wall of the push-pull rod body (21) and in sealing contact with the inner wall of the outer cylinder body (11), an upper blind hole (28) formed at the upper end surface of the push-pull rod body, and flow side holes (29) circumferentially distributed on the side wall of the upper blind hole (28);
The sealing outer cylinder (1) is clamped in the inserting grooves (65) of the side wings (62), so that the upper stop ring (12) and the lower stop ring (13) are respectively positioned on the upper end face and the lower end face of the side wings (62), and the intercepting push rod (2) is adjusted so that the fixed chuck (22) clamps the side wings of the piston rod (64) and stops above the piston rod (64);
the adjusting assembly (3) comprises a rotating piece (31) and a translating piece (32);
The rotary piece (31) comprises a rotary lower shaft (311) inserted into the lower round hole (23), a stop disc (312) formed on the outer wall of the rotary lower shaft (311) and positioned in the spring round cavity (24), an external threaded rod (313) formed at the upper end of the stop disc (312) and inserted into the screw round cavity (25), and a reset pressure spring (314) wound on the outer wall of the rotary lower shaft (311) and positioned below the stop disc (312);
The translation part (32) comprises a shielding check ring (321) which is slidably sleeved on the outer wall of the push-pull rod body (21) and corresponds to the side longitudinal hole (26), and connecting inserting rods (322) which are circumferentially and uniformly distributed on the inner wall of the shielding check ring (321) and are in one-to-one inserting correspondence with the side longitudinal hole (26), and the stop end of each connecting inserting rod (322) is formed with threads which are in threaded connection with the external threaded rod (313);
The rotary lower shaft (311) and the external threaded rod (313) are rotated, the drive connection inserted rod (322) and the shielding check ring (321) move up and down, the degree of shielding the circulation side hole (29) by the shielding check ring (321) is adjusted, the effective flow of the circulation side hole (29) is adjusted, and the interception effect of the interception push rod (2) under a normal state is adjusted.
2. An injection device of controllable injection speed according to claim 1, wherein:
still including being used for adjusting the damped transfer of pressure spring (314) that resets and hinder device (4), transfer and hinder device (4) including shaping in annular groove (41) of push-and-pull rod body (21) outer wall, slidable cover establish external screw thread ring (42) on annular groove (41), circumference equipartition are in connect vertical pole (43) in external screw thread ring (42) top and insert spring round cavity (24), set up at connect vertical pole (43) upper end and cover establish spring retainer ring (44) on rotatory lower shaft (311), spring retainer ring (44) are located the pressure spring that resets (314) lower extreme, transfer and hinder device (4) still include the spiro union internal thread pipe (45) of external screw thread ring (42) outer wall.
3. An injection device with controllable injection speed according to claim 2, characterized in that:
still include quick row device (5) that are used for quick downward twitch adjusting assembly (3), quick row device (5) include:
The quick-discharging chamber (51) comprises a communication side hole (511) which is arranged at the lower end of the push-pull rod body (21) and communicated with the lower round hole (23), a driven chamber (512) which is arranged at the right side of the communication side hole (511), a driving slot (513) which is arranged above the right side of the fixed chuck (22) along the up-down direction, a middle rotating hole (514) which is arranged in the fixed chuck (22) and communicated with the driven chamber (512) and the driving slot (513), and a pushing side hole (515) which is arranged at the right side of the driving slot (513);
the pushing assembly (52) comprises a driven rack (521) which is slidably arranged in the driven cavity (512), a belt Kong Tuer (522) which is arranged on the left side of the driven rack (521) and penetrates through the driven cavity (512), a transmission annular groove (523) which is formed on the outer wall of the lower rotating shaft (311) and is in running fit with the belt Kong Tuer (522), an intermediate gear (524) which is rotatably arranged in the intermediate rotating hole (514) and is meshed with the driven rack (521), a driving rack (525) which is slidably inserted in the driving slot (513), a pushing connecting rod (526) which is arranged on the right side of the driving rack (525) and penetrates through the pushing side hole (515), and an external finger plate (527) which is arranged on the side face of the pushing connecting rod (526).
4. A controllable injection device according to claim 3, wherein:
buffer oil is filled in the sealing outer cylinder (1).
5. The injection device of claim 4, wherein the injection rate is controllable, wherein:
the lower stop ring (13) is of an upper layer and a lower layer of fixed structure, and a gasket groove for accommodating a sealing gasket (14) is formed in the middle of the inner wall of the lower stop ring (13).
6. The injection device of claim 5, wherein the injection rate is controllable, wherein:
The gasket groove is formed into a conical groove shape with a wide inside and a narrow outside of the shaft section, and the sealing gasket (14) is formed into an annular shape with the wide inside and the narrow outside of the shaft section.
7. The injection device of claim 6, wherein the injection rate is controllable, wherein:
a baffle ring gasket (131) is arranged between the upper layer structure and the lower layer structure of the lower baffle ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410462066.6A CN118079140B (en) | 2024-04-17 | 2024-04-17 | Injection device with controllable injection speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410462066.6A CN118079140B (en) | 2024-04-17 | 2024-04-17 | Injection device with controllable injection speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118079140A CN118079140A (en) | 2024-05-28 |
| CN118079140B true CN118079140B (en) | 2024-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410462066.6A Active CN118079140B (en) | 2024-04-17 | 2024-04-17 | Injection device with controllable injection speed |
Country Status (1)
| Country | Link |
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| CN (1) | CN118079140B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105102027A (en) * | 2013-04-10 | 2015-11-25 | 赛诺菲 | Dispensing speed control mechanism and injection device |
| CN106267464A (en) * | 2015-05-25 | 2017-01-04 | 美敦力公司 | Hydraulic, fluid infusion device and manufacture method thereof |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988010129A1 (en) * | 1987-06-25 | 1988-12-29 | Nova Medical Pty. Limited | Slow delivery injection device |
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