CN109701109A - A kind of infusion mechanism - Google Patents
A kind of infusion mechanism Download PDFInfo
- Publication number
- CN109701109A CN109701109A CN201910188712.3A CN201910188712A CN109701109A CN 109701109 A CN109701109 A CN 109701109A CN 201910188712 A CN201910188712 A CN 201910188712A CN 109701109 A CN109701109 A CN 109701109A
- Authority
- CN
- China
- Prior art keywords
- infusion
- rotating member
- peripheral surface
- shell
- perfusion tube
- Prior art date
- 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.)
- Granted
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 59
- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 230000010412 perfusion Effects 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 10
- 102000004877 Insulin Human genes 0.000 description 5
- 108090001061 Insulin Proteins 0.000 description 5
- 229940125396 insulin Drugs 0.000 description 5
- 239000003814 drug Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- -1 300 lists Position Chemical compound 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a kind of infusion mechanisms, including shell, infusion assembly and actuator；The infusion assembly includes slide bar, transmission gear, rotating member, fixing seat, fixing sleeve, perfusion tube, piston and push broach, and the infusion end of the perfusion tube is connected through the fixing sleeve and the shell with external infusion part.The infusion mechanism designed using the above structure, rotating member is under the driving effect of actuator, and rotation while is slided back and forth along slide bar, thus the push broach fastened by rotating member outer surface, piston feeding is pushed while cutting perfusion tube, and the medical fluid in perfusion tube is then made to complete precisely infusion.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of infusion mechanisms.
Background technique
It is exactly insulin pump in the Typical Representative of medical field, portable high-accuracy human body liquid infusion, for treating sugar
Urinate patient.Insulin is measured according to " unit ", and every cc (or mL) is divided into 100 units, it is assumed that concentration is the U- of standard
100, under this metering method, a unit is equivalent to 10 μ L.Usually each medicine storage stores 3ml insulin, i.e. 300 lists
Position, appearance is similar to short and thick small size syringe, medicine storage piston total kilometres about 3cm, internal diameter about 12mm.Assuming that injection rate is arranged
For 1 unit/hour, insulin pump slowly will at the uniform velocity push piston advance 0.1mm in 1 hour, due to piston forward travel distance mistake
It is short, it also needs to remain a constant speed, this requirement causes the Mechanical & Electrical Transmission part of insulin pump extremely accurate and complicated, and cost occupies height not
Under.
Summary of the invention
The purpose of the present invention is to provide a kind of infusion mechanisms, and structure is simple, and infusion precision is high, at low cost.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of infusion mechanism including shell, is articulated in the intracorporal infusion assembly of chamber of the shell and for driving
State the actuator of infusion assembly work；The infusion assembly includes the slide bar being articulated between shell two lateral walls, sliding sleeve
Set on the slide bar and coaxially engaged with the slide bar transmission gear, be sheathed on the transmission gear and with the transmission gear
The rotating member that coaxially engages, is sheathed on institute at the fixing seat for being sheathed on described rotating member one end and being threadedly coupled with the rotating member
State the rotating member other end and matched with the rotating member fixing sleeve, be embedded in the thread groove of the fixing sleeve inner sidewall
Perfusion tube is set to the perfusion tube far from the piston in the port of outlet end and is embedded in the rotating member outer peripheral surface use
In the push broach for driving the piston to push medical fluid feeding, the infusion end of the perfusion tube through the fixing sleeve and the shell with
External infusion part is connected.
Wherein, the cutter head portion extension of the push broach matches in the thread groove and with the piston far from an end face of medical fluid
It closes.
Wherein, the inner peripheral surface of the fixing seat is recessed with internal screw thread, the internal screw thread and is convexly equipped in the rotating member periphery
The external screw thread in face matches.
Wherein, the external screw thread screwing length of the rotating member outer peripheral surface is less than the length of the rotating member.
Wherein, the side wall of the fixing sleeve offers the first guide hole drawn for the perfusion tube.
Wherein, the side wall of the shell offers the second guide hole, and the infusion end of the perfusion tube sequentially passes through described first
Guide hole and second guide hole.
Wherein, bushing is embedded in first guide hole and second guide hole.
Wherein, the T-shaped setting of the shaft section of the transmission gear, the gear teeth of the first outer peripheral surface of the transmission gear and week
Be meshed to the gear teeth for being distributed in rotating member port inner peripheral surface, the gear teeth of the second outer peripheral surface of the transmission gear with it is described
The driving gear of actuator is meshed.
Wherein, installation position, the outer peripheral surface difference of the fixing seat and the fixing sleeve are provided in the cavity of the shell
It is fastened with the installation position.
Wherein, the fixing seat and the fixing sleeve are coaxially disposed and outer diameter is equal.
Beneficial effects of the present invention: the present invention provides a kind of infusion mechanisms, including shell, are articulated in the chamber of the shell
Intracorporal infusion assembly and actuator for driving infusion assembly work；The infusion assembly includes being articulated in shell
Slide bar, sliding sleeve between body two lateral walls be set to the slide bar and coaxially engaged with the slide bar transmission gear, be arranged
In the transmission gear and coaxially engaged with the transmission gear rotating member, be sheathed on described rotating member one end and with described turn
The fixing seat of moving part threaded connection, is buried the fixing sleeve for being sheathed on the rotating member other end and matching with the rotating member
In the perfusion tube in the thread groove of the fixing sleeve inner sidewall, the work that is set in port of the perfusion tube far from outlet end
Push broach of the rotating member outer peripheral surface for driving the piston that medical fluid is pushed to feed is filled in and is embedded in, the perfusion tube
Infusion end is connected through the fixing sleeve and the shell with external infusion part.The infusion mechanism designed using the above structure,
Rotating member is under the driving effect of actuator, and rotation while is slided back and forth along slide bar, to be fastened by rotating member outer surface
Push broach, piston feeding is pushed while cutting perfusion tube, the medical fluid in perfusion tube is then made to complete precisely infusion.
Detailed description of the invention
Fig. 1 is a kind of exploded view for being transfused mechanism of the present invention.
Fig. 2 is the main view of Fig. 1.
Fig. 3 is the sectional view of A-A in Fig. 2.
Fig. 4 is the exploded view of infusion assembly in Fig. 1.
Fig. 5 is the axonometric drawing of Fig. 1.
Fig. 6 is the partial enlarged view in Fig. 4 at B.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In conjunction with shown in Fig. 1 to Fig. 6, a kind of infusion mechanism is present embodiments provided, including by lower case 11 and 12 groups of upper cover
The intracorporal infusion assembly 2 of shell made of conjunction, the chamber for being articulated in the shell and for driving the infusion assembly 2 to work
Actuator 3；
Specifically, infusion assembly 2 described in the present embodiment includes the slide bar 21 being articulated between shell two lateral walls, slides
The dynamic transmission gear 22 for being sheathed on the slide bar 21 and coaxially being engaged with the slide bar 21, be sheathed on the transmission gear 22 and with
Rotating member 23 that the transmission gear 22 coaxially engages is sheathed on described 23 one end of rotating member and connects with 23 screw thread of rotating member
The fixing seat 24 that connects, is embedded in the fixing sleeve 25 for being sheathed on 23 other end of rotating member and matching with the rotating member 23
Perfusion tube 26 in the thread groove of 25 inner sidewall of fixing sleeve is set to the perfusion tube 26 far from the port of outlet end
Piston 27 and 23 outer peripheral surface of rotating member is embedded in for driving the piston 27 to push the push broach 28 of medical fluid feeding, institute
The infusion end for stating perfusion tube 26 is connected through the fixing sleeve 25 and the shell with external infusion part.In the present embodiment, drive
Moving part 3 may be configured as motor, drives transmission gear 22 to rotate by the driving gear on electric machine main shaft, then drives rotating member 23
It relatively rotates between fixing seat 24, due to being threadedly coupled between fixing seat 24 and rotating member 23, is rotated in rotating member 23
While, it will be slided along slide bar 21.
In the present embodiment, while in order to facilitate the rotation of transmission gear 22, it can be slided along slide bar 21, the periphery of slide bar 21
Face circumferentially offers the gear teeth along its length, and the both ends of slide bar 21 connect with the bearing holder (housing, cover) rotation being embedded in shell two lateral walls
It connects.
Specifically, in the present embodiment, the inner peripheral surface of the fixing seat 24 is recessed with internal screw thread, the internal screw thread be convexly equipped in
The external screw thread of 23 outer peripheral surface of rotating member matches.
In addition, in order to enable axial movement can be generated between rotating member 23 and fixing seat 24,23 periphery of rotating member
The external screw thread screwing length in face is less than the length of the rotating member 23.
Further, shell is drawn in order to facilitate perfusion tube 26 to connect with external infusion part, in the present embodiment, the fixation
The side wall of set 25 offers the first guide hole drawn for the perfusion tube 26, and the side wall of the shell offers the second guide hole,
The infusion end of the perfusion tube 26 sequentially passes through first guide hole and second guide hole, first guide hole and described second
It is embedded with bushing in guide hole, the abrasion to perfusion tube 26 is reduced with this.
Specifically, as shown in connection with fig. 3, in the present embodiment, the T-shaped setting of shaft section of the transmission gear 22, the biography
The gear teeth of first outer peripheral surface of moving gear 22 are meshed with the circumferential gear teeth for being distributed in the 23 port inner peripheral surface of rotating member, described
The gear teeth of second outer peripheral surface of transmission gear 22 are meshed with the driving gear of the actuator 3, in addition, in order to enable the transmission
Gear 22 is slidably matched with slide bar 21, at the middle part of the transmission gear 22 axially through being provided with through-hole, the inner circumferential of the through-hole
Face is provided with the gear teeth being meshed with slide bar 21, and the design of this structure can not only make transmission gear 22 rotate with moving slide-bar 21,
It can also be slided under the action of fixing seat 24 along 21 length direction of slide bar.
The installation of fixing seat 24 and fixing sleeve 25 is fixed for convenience in the present embodiment, as shown in figure 3, at the middle part of shell
Through installation position 13 is offered, which can be by the equal fixing seat 24 of outer diameter and fixation with this
Set 25 is anchored in the installation position.
The infusion mechanism designed using the above structure splits piston by push broach 28 when for the ease of the rotation of rotating member 23
27 perfusion tubes 26 far from medical fluid one end then push piston 27 to feed, and the cutter head portion extension of the push broach 28 is in the screw thread
Slot and with the piston 27 far from medical fluid an end face fasten.
Perfusion tube 26, is embedded in the thread groove of 25 inner sidewall of fixing sleeve by the infusion mechanism designed using aforesaid way
It is interior, so that the length of perfusion tube 26 obtains biggish extension, and push piston 27 to feed by push broach 28, medical fluid is completed with this
The required precision to mechanism part, phase can be effectively reduced while promoting infusion precision in infusion, the setting of such mode
To traditional medical fluid infusion, the production cost of infusion mechanism is greatly reduced.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of infusion mechanism, it is characterised in that: including shell, be articulated in the shell the intracorporal infusion assembly of chamber and
For driving the actuator of the infusion assembly work；The infusion assembly includes the cunning being articulated between shell two lateral walls
Bar, sliding sleeve be set to the slide bar and coaxially engaged with the slide bar transmission gear, be sheathed on the transmission gear and with institute
State the rotating member that transmission gear coaxially engages, the fixation for being sheathed on described rotating member one end and being threadedly coupled with the rotating member
Seat, is embedded in the fixing sleeve inner sidewall at the fixing sleeve for being sheathed on the rotating member other end and matching with the rotating member
Thread groove in perfusion tube, be set to the perfusion tube far from the piston in the port of outlet end and be embedded in described turn
The fixing sleeve is run through at the infusion end of the push broach that moving part outer peripheral surface is used to that the piston to be driven to push medical fluid feeding, the perfusion tube
And the shell is connected with external infusion part.
2. a kind of infusion mechanism according to claim 1, it is characterised in that: the cutter head portion extension of the push broach is in the spiral shell
It groove and is matched with the piston far from an end face of medical fluid.
3. a kind of infusion mechanism according to claim 1, it is characterised in that: the inner peripheral surface of the fixing seat is recessed with interior spiral shell
Line, the internal screw thread are matched with the external screw thread for being convexly equipped in the rotating member outer peripheral surface.
4. a kind of infusion mechanism according to claim 3, it is characterised in that: the external screw thread of the rotating member outer peripheral surface screws
Length is less than the length of the rotating member.
5. a kind of infusion mechanism according to claim 1, it is characterised in that: the side wall of the fixing sleeve is offered for institute
State the first guide hole of perfusion tube extraction.
6. a kind of infusion mechanism according to claim 5, it is characterised in that: the side wall of the shell offers second and leads
Hole, the infusion end of the perfusion tube sequentially pass through first guide hole and second guide hole.
7. a kind of infusion mechanism according to claim 6, it is characterised in that: in first guide hole and second guide hole
It is embedded with bushing.
8. a kind of infusion mechanism according to claim 1, it is characterised in that: the shaft section of the transmission gear is T-shaped to be set
It sets, the gear teeth of the first outer peripheral surface of the transmission gear are mutually nibbled with the circumferential gear teeth for being distributed in rotating member port inner peripheral surface
It closes, the gear teeth of the second outer peripheral surface of the transmission gear are meshed with the driving gear of the actuator.
9. a kind of infusion mechanism according to claim 1, it is characterised in that: be provided with installation in the cavity of the shell
The outer peripheral surface of position, the fixing seat and the fixing sleeve is fastened with the installation position respectively.
10. a kind of infusion mechanism according to claim 1, it is characterised in that: the fixing seat and the fixing sleeve are coaxial
It is arranged and outer diameter is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188712.3A CN109701109B (en) | 2019-03-13 | 2019-03-13 | Infusion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188712.3A CN109701109B (en) | 2019-03-13 | 2019-03-13 | Infusion mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109701109A true CN109701109A (en) | 2019-05-03 |
| CN109701109B CN109701109B (en) | 2024-01-30 |
Family
ID=66265862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910188712.3A Active CN109701109B (en) | 2019-03-13 | 2019-03-13 | Infusion mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109701109B (en) |
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-
2019
- 2019-03-13 CN CN201910188712.3A patent/CN109701109B/en active Active
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|---|---|---|---|---|
| US6248093B1 (en) * | 1998-10-29 | 2001-06-19 | Minimed Inc. | Compact pump drive system |
| KR20040084214A (en) * | 2003-03-27 | 2004-10-06 | 주식회사 엔터기술 | insulin pump |
| CA2658857A1 (en) * | 2006-08-23 | 2008-02-28 | Medtronic Minimed, Inc. | Infusion medium delivery device and method with drive device for driving plunger in reservoir |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109701109B (en) | 2024-01-30 |
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