CN109718423B - Infusion device - Google Patents
Infusion device Download PDFInfo
- Publication number
- CN109718423B CN109718423B CN201910189008.XA CN201910189008A CN109718423B CN 109718423 B CN109718423 B CN 109718423B CN 201910189008 A CN201910189008 A CN 201910189008A CN 109718423 B CN109718423 B CN 109718423B
- Authority
- CN
- China
- Prior art keywords
- shell
- infusion
- fixed sleeve
- sleeve
- infusion 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.)
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Links
- 238000001802 infusion Methods 0.000 title claims abstract description 63
- 239000003814 drug Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 3
- 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
- -1 300 units Chemical compound 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an infusion device, which comprises a shell, a driving part erected in the shell and an infusion mechanism connected with the driving part, wherein the driving part is arranged on the inner side of the shell; the infusion mechanism comprises a fixed sleeve pivoted with the inner bottom surface of the shell, a containing groove spirally concavely arranged on the outer peripheral surface of the fixed sleeve, an infusion tube with the tail end wound on the containing groove and the head end exposed out of the shell, and a push-type knife arranged on one side of the fixed sleeve in a vertically reciprocating sliding manner along the axis of the fixed sleeve; a piston for pushing the liquid medicine in the infusion tube to feed is arranged in the port at the tail end of the infusion tube, and the push knife is matched with one end face of the piston far away from the liquid medicine. With this structural design's infusion device can be through winding in the setting of the transfer line of accomodating the inslot, effectively increases the pipe length of transfer line, very big promotion the propulsion precision of liquid medicine then, and effectively reduced equipment manufacturing cost.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an infusion device.
Background
In the medical field, a typical representative of portable high-precision infusion of human medical fluids is an insulin pump, which is used to treat diabetics. Insulin is measured in "units" and divided into 100 units per cc (or mL), assuming a standard concentration of U-100, in this manner one unit corresponds to 10. Mu.L. Typically, each reservoir stores 3ml of insulin, i.e. 300 units, resembling a short, thick, small-size syringe in appearance, with a reservoir piston total stroke of about 3cm and an inner diameter of about 12mm. Assuming an injection rate of 1 unit/hour, the insulin pump will slowly push the piston forward 0.1mm at a constant speed within 1 hour, and since the piston forward distance is too short, the constant speed is required to be maintained, and this requirement causes the electromechanical transmission part of the insulin pump to be extremely precise and complex, and the cost is high.
Disclosure of Invention
The invention aims to provide an infusion device which has high infusion precision and can effectively reduce the production cost of equipment.
To achieve the purpose, the invention adopts the following technical scheme:
an infusion device comprises a shell, a driving part arranged in the shell in an erecting way and an infusion mechanism connected with the driving part; the infusion mechanism comprises a fixed sleeve pivoted with the inner bottom surface of the shell, a containing groove spirally concavely arranged on the outer peripheral surface of the fixed sleeve, an infusion tube with the tail end wound on the containing groove and the head end exposed out of the shell, and a push-type knife arranged on one side of the fixed sleeve in a vertically reciprocating sliding manner along the axis of the fixed sleeve; a piston for pushing the liquid medicine in the infusion tube to feed is arranged in the port at the tail end of the infusion tube, and the push knife is matched with one end face of the piston far away from the liquid medicine.
One side of the fixed sleeve is vertically erected with a guide rod along the axial direction of the fixed sleeve, and two ends of the guide rod are fastened with the inner wall of the cavity of the shell.
The guide rod is sleeved with a sliding sleeve, the tail of the push knife is fastened to the sliding sleeve, and the tool bit part of the push knife extends outwards from the storage groove.
Wherein, the length of transfer line is greater than the groove length of accomodating the groove.
The driving part is a motor fastened on the inner wall of the cavity of the shell, and the motor is electrically connected with an external electric control device.
The inner peripheral surface of the opening end of the fixed sleeve is uniformly provided with gear teeth, and the gear teeth are meshed with a driving gear arranged at the end part of a driving shaft of the motor.
The inner bottom surface of the fixed sleeve is coaxially embedded with a shaft sleeve, and the shaft sleeve is matched with a rotating shaft protruding from the inner bottom surface of the cavity of the shell.
Wherein, the casing wall of casing buries has the guide pin bushing that is used for wearing to establish the transfer line.
The shell comprises a lower shell and a top cover covering the upper port of the lower shell, wherein a positioning groove is formed in the inner bottom surface of the top cover, and the motor is buried in the positioning groove.
The invention has the beneficial effects that: the invention provides an infusion device, which comprises a shell, a driving part arranged in the shell in an erecting way and an infusion mechanism connected with the driving part; the infusion mechanism comprises a fixed sleeve pivoted with the inner bottom surface of the shell, a containing groove spirally concavely arranged on the outer peripheral surface of the fixed sleeve, an infusion tube with the tail end wound on the containing groove and the head end exposed out of the shell, and a push-type knife arranged on one side of the fixed sleeve in a vertically reciprocating sliding manner along the axis of the fixed sleeve; a piston for pushing the liquid medicine in the infusion tube to feed is arranged in the port at the tail end of the infusion tube, and the push knife is matched with one end face of the piston far away from the liquid medicine. With this structural design's infusion device can be through winding in the setting of the transfer line of accomodating the inslot, effectively increases the pipe length of transfer line, very big promotion the propulsion precision of liquid medicine then, and effectively reduced equipment manufacturing cost.
Drawings
Fig. 1 is an exploded view of an infusion device of the present invention.
Fig. 2 is an isometric view of an infusion device of the present invention.
Fig. 3 is an isometric view of the lower housing of fig. 1.
Fig. 4 is an isometric view of the infusion mechanism of fig. 1.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 4, the present embodiment provides an infusion device including a housing formed by combining a lower housing 11 and a top cover 12, a motor 2 installed in the housing, and an infusion mechanism connected to the motor 2. Specifically, the infusion mechanism includes a fixed sleeve 31 pivotally connected to the inner bottom surface of the lower housing 11, a receiving slot 311 spirally recessed on the outer circumferential surface of the fixed sleeve 31, a transfusion tube 32 with a tail end wound on the receiving slot 311 and a head end exposed to the housing, and a push knife 33 mounted on one side of the fixed sleeve 31 and axially sliding up and down along the fixed sleeve 31. A piston (not shown) for pushing the liquid medicine in the infusion tube 32 to feed is provided in the port at the tail end of the infusion tube 32, and the push knife 33 abuts against an end surface of the piston (not shown) away from the liquid medicine. With this structural design's infusion set can be through winding in the setting of the transfer line 32 in accomodating groove 311, effectively increases the tube length of transfer line 32, then makes the liquid medicine in the transfer line advance the precision obtain great promotion under the condition that does not increase equipment cost.
Further, in order to facilitate the axial cutting of the push-broach 33 by the infusion tube 32 on one side of the piston (not labeled in the figure) away from the liquid medicine, the piston (not labeled in the figure) is pushed to feed forward, and the push-broach 33 can synchronously move along the path of the containing groove 311 through the rotation of the fixing sleeve 31, preferably, a guide rod 34 is vertically arranged on one side of the fixing sleeve 31 along the axial direction of the fixing sleeve 31, two ends of the guide rod 34 are fastened with the inner wall of the cavity of the shell, the guide rod 34 is sleeved with a sliding sleeve 35, the tail of the push-broach 33 is fastened to the sliding sleeve 35, and the tool bit of the push-broach 33 extends out of the containing groove 311. This allows the push blade 33 to cut the infusion tube 32 along the receiving groove 311 and push a piston (not shown) to feed along with the rotation of the fixing sleeve 31, and then allows the liquid medicine to feed along the infusion tube 32.
Taking fig. 4 as an example, in this embodiment, the upper port of the fixed sleeve 31 keeps moving clockwise under the driving action of the motor 2, at this time, the infusion tube 32 filled with the liquid medicine is continuously rolled up to the accommodating groove 311, at this time, the infusion tube 32 on one side of the piston (not labeled in the drawing) far away from the liquid medicine is split by the push knife 33, and the piston (not labeled in the drawing) pushes the liquid medicine in the infusion tube 32 to feed to the infusion end under the pushing action of the push knife 33.
In order to reduce the problem of high cost of the pushing portion due to the short piston stroke, the length of the infusion tube 32 in the present embodiment is longer than the slot length of the receiving slot 311. Through the rolling of fixed cover to the transfer line to and the promotion of pushing away the sword to the piston, very big reduction the dependence to the high accuracy requirement of propulsion part, also then great reduction the manufacturing cost of whole infusion set.
In order to facilitate the erection of the motor 2, in this embodiment, a positioning groove is disposed on the inner bottom surface of the top cover 12, the motor 2 is embedded in the positioning groove, and the motor 2 is electrically connected with an external electric control device.
In order to facilitate the mutual engagement of the driving gear of the motor 2 and the inner peripheral surface of the open end of the fixed sleeve 31, in this embodiment, gear teeth are uniformly distributed on the inner peripheral surface of the open end of the fixed sleeve 31, and the gear teeth can be integrally processed on the inner peripheral surface of the open end of the fixed sleeve 31 or can be embedded in a split manner.
Further, in order to make the fixing sleeve 31 smoothly rotate under the driving action of the motor 2, in this embodiment, the inner bottom surface of the fixing sleeve 31 is coaxially embedded with a shaft sleeve, the shaft sleeve is sleeved on the rotating shaft 13 at the inner bottom surface of the cavity of the housing, in addition, in order to facilitate the sliding in and out of the infusion tube 32, the abrasion of the infusion tube 32 is reduced, and the housing wall of the housing of this embodiment is further embedded with a guide sleeve for penetrating the infusion tube 32.
By adopting the infusion device with the structural design, the length of the infusion tube 32 is effectively increased through the arrangement of the infusion tube 32 wound in the accommodating groove 311 on the outer peripheral surface of the fixed sleeve 31, so that the liquid medicine propelling precision in the tube is greatly improved, meanwhile, the equipment production cost is greatly reduced through the arrangement of the motor 2 and the fixed sleeve 31, and the problem that the propelling structure cost is high due to the fact that the stroke of a piston (not marked in the figure) is short in the related art is solved.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (6)
1. An infusion device, characterized in that: comprises a shell, a driving part arranged in the shell, and an infusion mechanism connected with the driving part; the infusion mechanism comprises a fixed sleeve pivoted with the inner bottom surface of the shell, a containing groove spirally concavely arranged on the outer peripheral surface of the fixed sleeve, an infusion tube with the tail end wound on the containing groove and the head end exposed out of the shell, and a push-type knife arranged on one side of the fixed sleeve in a vertically reciprocating sliding manner along the axis of the fixed sleeve; a piston for pushing the liquid medicine in the infusion tube to feed is arranged in a port at the tail end of the infusion tube, and the push knife is matched with one end face of the piston far away from the liquid medicine;
a guide rod is vertically erected on one side of the fixed sleeve along the axial direction of the fixed sleeve, and two ends of the guide rod are fastened with the inner wall of the cavity of the shell;
the guide rod is sleeved with a sliding sleeve, the tail part of the push knife is fastened to the sliding sleeve, and the tool bit part of the push knife extends out of the storage groove;
the length of the infusion tube is longer than the length of the containing groove.
2. An infusion device as claimed in claim 1, wherein: the driving part is a motor fastened on the inner wall of the cavity of the shell, and the motor is electrically connected with an external electric control device.
3. An infusion device as claimed in claim 2, wherein: the inner peripheral surface of the opening end of the fixed sleeve is uniformly provided with gear teeth which are meshed with a driving gear arranged at the end part of the driving shaft of the motor.
4. An infusion device as claimed in claim 1, wherein: the inner bottom surface of the fixed sleeve is coaxially embedded with a shaft sleeve, and the shaft sleeve is matched with a rotating shaft protruding from the inner bottom surface of the cavity of the shell.
5. An infusion device as claimed in claim 1, wherein: the shell wall of the shell is buried with a guide sleeve for penetrating the infusion tube.
6. An infusion device as claimed in claim 2, wherein: the shell comprises a lower shell and a top cover covering the upper port of the lower shell, wherein a positioning groove is formed in the inner bottom surface of the top cover, and the motor is buried in the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910189008.XA CN109718423B (en) | 2019-03-13 | 2019-03-13 | Infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910189008.XA CN109718423B (en) | 2019-03-13 | 2019-03-13 | Infusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109718423A CN109718423A (en) | 2019-05-07 |
| CN109718423B true CN109718423B (en) | 2023-11-10 |
Family
ID=66302415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910189008.XA Active CN109718423B (en) | 2019-03-13 | 2019-03-13 | Infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109718423B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111388797A (en) * | 2020-04-20 | 2020-07-10 | 深圳中科光电医疗电子有限公司 | Infusion pipe unit and infusion device thereof |
| CN113713205A (en) * | 2021-09-14 | 2021-11-30 | 深圳中科光电医疗电子有限公司 | Transfusion device convenient for sucking liquid medicine |
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| CN109718423A (en) | 2019-05-07 |
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