CN104474602B - Constant-force spring type medical infusion apparatus - Google Patents
Constant-force spring type medical infusion apparatus Download PDFInfo
- Publication number
- CN104474602B CN104474602B CN201410735088.1A CN201410735088A CN104474602B CN 104474602 B CN104474602 B CN 104474602B CN 201410735088 A CN201410735088 A CN 201410735088A CN 104474602 B CN104474602 B CN 104474602B
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- CN
- China
- Prior art keywords
- gear
- rotating shaft
- spring
- apparatus body
- ratchet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
Abstract
A constant-force spring type medical infusion apparatus comprises a gear drive mechanism, a gear-rack drive mechanism, a ratchet mechanism and an auxiliary mechanism. The gear drive mechanism comprises a rotating wheel, a first gear, a second gear, a first rotating shaft and a second rotating shaft. The gear-rack drive mechanism comprises a constant-force spring, a spring box, a spring wheel, a guide bar and a pressing plate; the ratchet mechanism comprises a ratchet, a retaining pawl and a compression spring; the auxiliary mechanism comprises a body, a fastening plate, a lock catch and a resistance adjusting screw. The rotating wheel is rotated to store energy for the constant-force spring, the ratchet functions in retaining to enable the constant-force spring to be tightened, then the constant-force spring drives the spring box to rotate, further the spring wheel welded with the spring box rotates, the spring wheel and the second rotating shaft form a rotational pair and are non-interfering in movement, and the rack is driven by the spring wheel to drive the pressing plate to rotate. Infusion is performed by applying pressure manually instead of atmosphere pressure difference, the infusion speed is stable, the infusion apparatus can be worn on the waist, and convenience is brought to patients to move.
Description
Technical field
The present invention relates to the fluid delivery apparatus of medical treatment use, especially a kind of constant force Mainspring type medical infusing device.
Background technology
Venous transfusion is clinical conventional critical treatment means, is to be inputted internal large bolus injection liquid by intravenous drip.During use
Adjusted by transfusion device and drip speed, continue and stably enter vein, with supplementary body fluid, electrolyte or offer nutrient substance.Although
Promote the use of infusion bottle or the bag of plastics at present, but traditional infusion model is constant, i.e. utilize atm difference that medicament is injected human body
In, therefore need to transfusion bottle height be hung on shelf, patient's action is the most inconvenient, and easily causes flow rate of liquid during ambulatory infusion bottle not
Stable, it is likely to result in transfusion and interrupts during even blood is back to tube for transfusion.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of constant force Mainspring type medical infusing device, it is possible to wears in loins, makes patient
Action is convenient, and keeps more stable flow rate of liquid, and rational in infrastructure, easy and simple to handle.
A kind of constant force Mainspring type medical infusing device is adopted the following technical scheme that, including gear for solving the above-mentioned technical problem present invention
Drive mechanism, rack and pinion drive mechanism, ratchet mechanism and auxiliary body, concrete structure and connected mode be:
Described gear drive includes runner, the first gear, the second gear, the first rotating shaft and the second rotating shaft, and runner is welded on
First rotating shaft top, the first gear and the first rotating shaft are by bonded, and the second gear and the second rotating shaft are passed through bonded, the first tooth
Wheel and the second gear engage each other；
Described rack and pinion drive mechanism includes constant force clockwork spring, barrel, bar wheel, tooth bar, gib block and pressing plate, in constant force clockwork spring
End is fixed in the second rotating shaft, and outer end and barrel inwall are affixed, and barrel lower surface is welded on bar wheel end face, bar wheel and second turn
Shaft clearance cooperatively forms revolute pair, tooth bar and gib block and is symmetrically welded at pressing plate both sides, and two sides cooperatively form shifting with apparatus body
Dynamic pair, bar wheel and tooth bar engage each other；
Described ratchet mechanism includes ratchet, lock pawl and compression spring, ratchet and the second rotating shaft interference fit, lock pawl one end and
Apparatus body is hinged, and the other end contacts with ratchet, and compression spring one end is fixed in apparatus body, and the other end and lock pawl connect；
Described auxiliary body includes apparatus body, fastening plate, snap close and resistance trimming screw, and fastening plate one end and apparatus body are hinged, snap close
Hinged with apparatus body, the tapped through hole of resistance trimming screw and apparatus body side coordinates.
Described apparatus body is provided with loading chamber and wears ring.
The present invention has the prominent advantages that:
1, transfusion device can be worn in loins during transfusion, and infusion bottle need not be held high, make patient's action more convenient；
2, the artificial steady pressure that applies replaces the effect of atmospheric pressure, makes infusion flow rate more stable, it is to avoid even blood is interrupted in transfusion
It is back in tube for transfusion；
3, tube for transfusion is no longer necessary to and air communication, it is to avoid pathogenic bacteria enters in medicinal liquid.
Accompanying drawing explanation
Fig. 1 is the structural representation of the constant force Mainspring type medical infusing device of the present invention.
Fig. 2 is the graphics of the constant force Mainspring type medical infusing device of the present invention.
Fig. 3 is the apparatus body structural representation of the constant force Mainspring type medical infusing device of the present invention.
Figure is labeled as: apparatus body 1, tooth bar 2, gib block the 3, first gear the 4, first rotating shaft the 5, second gear 6, stop
Pawl 7, compression spring the 8, second rotating shaft 9, ratchet 10, wearing ring 11, resistance trimming screw 12, fastening plate 13, snap close 14, pressure
Plate 15, bar wheel 16, constant force clockwork spring 17, barrel 18, runner 19, loading chamber 20.
Detailed description of the invention
Below by way of drawings and Examples, technical scheme is described further.
As shown in Figure 1 to Figure 3, a kind of constant force Mainspring type medical infusing device of the present invention, including gear drive, tooth
Taking turns rack gear, ratchet mechanism and auxiliary body, concrete structure and connected mode is:
Described gear drive includes runner the 19, first gear the 4, second gear the 6, first rotating shaft 5 and the second rotating shaft 9, turns
Wheel 19 is welded on the first rotating shaft 5 top, and the first gear 4 and the first rotating shaft 5 are passed through bonded, the second gear 6 and the second rotating shaft
9 by bonded, and the first gear 4 and the second gear 6 engage each other；
Described rack and pinion drive mechanism includes constant force clockwork spring 17, barrel 18, bar wheel 16, tooth bar 2, gib block 3 and pressing plate
15, constant force clockwork spring 17 the inner is fixed in the second rotating shaft 9, and outer end and barrel 18 inwall are affixed, and barrel 18 lower surface is welded on
Bar is taken turns on 16 end faces, and bar wheel 16 and the second rotating shaft 9 matched in clearance form revolute pair, and tooth bar 2 and gib block 3 are symmetrically welded at
Pressing plate 15 both sides, and two sides and apparatus body 1 cooperatively form moving sets, bar wheel 16 and tooth bar 2 engage each other；
Described ratchet mechanism includes ratchet 10, lock pawl 7 and compression spring 8, ratchet 10 and the second rotating shaft 9 interference fit, stops
Pawl 7 one end and apparatus body 1 are hinged, and the other end contacts with ratchet 10, and compression spring 8 one end is fixed in apparatus body 1, separately
One end and lock pawl 7 connect；
Described auxiliary body includes apparatus body 1, fastening plate 13, snap close 14 and resistance trimming screw 12, fastening plate 13 one end and device
Body 1 is hinged, and snap close 14 and apparatus body are hinged, and the tapped through hole of resistance trimming screw 12 and apparatus body 1 side coordinates.
Described apparatus body 1 is provided with loading chamber 20 and wears ring 11.
Operation principle and process:
Turn runner 19 clockwise, the first rotating shaft 5 drives the first gear 4, thus drives the second gear 6, and the second gear 6 carries
Dynamic second rotating shaft 9 rotates, and makes the constant force clockwork spring 17 affixed with the second rotating shaft 9 screw energy storage, and ratchet mechanism rises in thermal energy storage process
Stopping function.During constant force clockwork spring 17 screws, barrel 18, bar take turns 16 concomitant rotation, bar wheel 16 driving tooth bar 2
Pressing plate 15 is made to rise.
Infusion bottle is placed in loading chamber 20, closes upper platen 13 and locked with snap close 14, discharge runner 19, due to
Resistance trimming screw 12 can increase the resistance to sliding of gib block 3 with gib block 3 contacts side surfaces through after the tapped through hole of apparatus body 1 side,
Therefore can control, by regulation resistance trimming screw 12, the speed that pressing plate is pressed for 15 times, thus control the flow velocity of medicinal liquid.
Claims (2)
1. a constant force Mainspring type medical infusing device, including gear drive, rack and pinion drive mechanism, ratchet mechanism and auxiliary
Help mechanism, it is characterised in that concrete structure and connected mode be:
Described gear drive includes runner, the first gear, the second gear, the first rotating shaft and the second rotating shaft, and runner is welded on
First rotating shaft top, the first gear and the first rotating shaft are by bonded, and the second gear and the second rotating shaft are passed through bonded, the first tooth
Wheel and the second gear engage each other；
Described rack and pinion drive mechanism includes constant force clockwork spring, barrel, bar wheel, tooth bar, gib block and pressing plate, in constant force clockwork spring
End is fixed in the second rotating shaft, and outer end and barrel inwall are affixed, and barrel lower surface is welded on bar wheel end face, bar wheel and second turn
Shaft clearance cooperatively forms revolute pair, tooth bar and gib block and is symmetrically welded at pressing plate both sides, and two sides cooperatively form shifting with apparatus body
Dynamic pair, bar wheel and tooth bar engage each other；
Described ratchet mechanism includes ratchet, lock pawl and compression spring, ratchet and the second rotating shaft interference fit, lock pawl one end and
Apparatus body is hinged, and the other end contacts with ratchet, and compression spring one end is fixed in apparatus body, and the other end and lock pawl connect；
Described auxiliary body includes apparatus body, fastening plate, snap close and resistance trimming screw, and fastening plate one end and apparatus body are hinged, snap close
Hinged with apparatus body, the tapped through hole of resistance trimming screw and apparatus body side coordinates.
A kind of constant force Mainspring type medical infusing device the most according to claim 1, it is characterised in that described apparatus body is provided with
Load chamber and wear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735088.1A CN104474602B (en) | 2014-12-04 | 2014-12-04 | Constant-force spring type medical infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735088.1A CN104474602B (en) | 2014-12-04 | 2014-12-04 | Constant-force spring type medical infusion apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104474602A CN104474602A (en) | 2015-04-01 |
| CN104474602B true CN104474602B (en) | 2017-01-11 |
Family
ID=52749295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410735088.1A Active CN104474602B (en) | 2014-12-04 | 2014-12-04 | Constant-force spring type medical infusion apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN104474602B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477737B (en) * | 2016-02-03 | 2018-12-28 | 广州市安辅健医疗器械有限公司 | A kind of portable infusion apparatus |
| CN109172985A (en) * | 2018-09-18 | 2019-01-11 | 上海健康医学院 | A kind of fixation device of tracheal cannula |
| CN113531370A (en) * | 2021-07-28 | 2021-10-22 | 燕山大学 | High-precision mechanical timing lubricant releasing device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4059110A (en) * | 1976-10-07 | 1977-11-22 | Timex Corporation | Clockwork driven hypodermic syringe |
| US4273122A (en) * | 1976-11-12 | 1981-06-16 | Whitney Douglass G | Self contained powered injection system |
| DE2906830C2 (en) * | 1979-02-22 | 1981-07-16 | B. Braun Melsungen Ag, 3508 Melsungen | Device for continuous infusions |
| CN2127621Y (en) * | 1992-07-20 | 1993-03-03 | 石斌 | Portable automatic-control transfusion system |
| CN2169433Y (en) * | 1993-04-01 | 1994-06-22 | 刘鸿鹄 | Automatic assist pushing device for vein injection |
| CN2429179Y (en) * | 2000-04-11 | 2001-05-09 | 苏俊锋 | Pressure stabilizing infusion device with automatic alarm |
| CN2491032Y (en) * | 2001-03-24 | 2002-05-15 | 苏俊锋 | Automatic pressuring device of soft package transfusion |
| CN101319670B (en) * | 2008-07-11 | 2010-10-13 | 林荣华 | Automatic transfusion apparatus |
| CN201235116Y (en) * | 2008-08-13 | 2009-05-13 | 周文光 | Passive medical transfer pump |
| CN104066465A (en) * | 2011-12-02 | 2014-09-24 | 赫基梅德有限公司 | A mobile infusion device |
-
2014
- 2014-12-04 CN CN201410735088.1A patent/CN104474602B/en active Active
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| Publication number | Publication date |
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| CN104474602A (en) | 2015-04-01 |
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