CN209848007U

CN209848007U - Infusion device

Info

Publication number: CN209848007U
Application number: CN201920327567.8U
Authority: CN
Inventors: 胡国雄; 王岳鹏
Original assignee: Shenzhen Zhongke Biological Medical Electronics Co Ltd
Current assignee: Shenzhen Zhongke Biological Medical Electronics Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2019-12-27
Anticipated expiration: 2029-03-13

Abstract

The utility model discloses an infusion device, which 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, an accommodating groove spirally and concavely arranged on the peripheral surface of the fixed sleeve, an infusion tube of which the tail end is wound in the accommodating groove and the head end is exposed out of the shell, and a push broach erected on one side of the fixed sleeve and arranged along the axial direction of the fixed sleeve in a reciprocating manner; a piston for pushing liquid medicine in the infusion tube to feed is arranged in a port at the tail end of the infusion tube, and the push broach is matched with one end face of the piston, far away from the liquid medicine. With the infusion set of this structural design, can effectively increase the tube length of transfer line through twining in the setting of accomodating the transfer line of inslot, then very big promotion the propulsion precision of liquid medicine, and effectively reduced equipment manufacturing cost.

Description

Infusion device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an infusion device.

Background

In the medical field, a typical representative of portable high-precision human drug solution infusion is an insulin pump, which is used for treating diabetic patients. Insulin is measured in "units" divided into 100 units per cc (or mL), assuming the standard U-100 concentration, in this manner one unit corresponds to 10. mu.L. Typically each reservoir stores 3ml of insulin, i.e. 300 units, in an appearance similar to a short and thick small syringe, with a total reservoir piston travel of about 3cm and an internal diameter of about 12 mm. Assuming that the injection rate is set to be 1 unit/hour, the insulin pump will slowly push the piston to advance 0.1mm at a constant speed within 1 hour, and the piston advance distance is too short, and the constant speed needs to be maintained, which causes the electromechanical transmission part of the insulin pump to be extremely precise and complex, and the cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an infusion device, this infusion device infusion precision is high, and can effectively reduce equipment manufacturing cost.

To achieve the purpose, the utility model adopts the following technical proposal:

an infusion device comprises a shell, a driving part erected 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, an accommodating groove spirally and concavely arranged on the peripheral surface of the fixed sleeve, an infusion tube of which the tail end is wound in the accommodating groove and the head end is exposed out of the shell, and a push broach erected on one side of the fixed sleeve and arranged along the axial direction of the fixed sleeve in a reciprocating manner; a piston for pushing liquid medicine in the infusion tube to feed is arranged in a port at the tail end of the infusion tube, and the push broach is matched with one end face of the piston, far away from the liquid medicine.

And 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 of the push broach is fastened on the sliding sleeve, and the head of the push broach extends out of the accommodating groove.

Wherein the length of the infusion tube is longer than the length of the accommodating 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.

Gear teeth are uniformly distributed on the inner circumferential surface of the opening end of the fixed sleeve and 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 which is convexly arranged on the inner bottom surface of the cavity of the shell.

Wherein, a guide sleeve for penetrating the infusion tube is embedded in the shell wall of the shell.

The motor is characterized in that the shell comprises a lower shell and a top cover covering the upper end opening of the lower shell, a positioning groove is formed in the inner bottom surface of the top cover, and the motor is embedded in the positioning groove.

The utility model has the advantages that: the utility model provides an infusion device, which 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, an accommodating groove spirally and concavely arranged on the peripheral surface of the fixed sleeve, an infusion tube of which the tail end is wound in the accommodating groove and the head end is exposed out of the shell, and a push broach erected on one side of the fixed sleeve and arranged along the axial direction of the fixed sleeve in a reciprocating manner; a piston for pushing liquid medicine in the infusion tube to feed is arranged in a port at the tail end of the infusion tube, and the push broach is matched with one end face of the piston, far away from the liquid medicine. With the infusion set of this structural design, can effectively increase the tube length of transfer line through twining in the setting of accomodating the transfer line of inslot, then very big promotion the propulsion precision of liquid medicine, 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 solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present embodiment provides an infusion apparatus, which includes a housing formed by combining a lower housing 11 and a top cover 12, a motor 2 mounted in the housing, and an infusion mechanism connected to the motor 2. Specifically, the infusion mechanism comprises a fixed sleeve 31 pivoted with the inner bottom surface of the lower shell 11, an accommodating groove 311 spirally and concavely arranged on the peripheral surface of the fixed sleeve 31, an infusion tube 32 with the tail end wound in the accommodating groove 311 and the head end exposed out of the shell, and a push broach 33 erected on one side of the fixed sleeve 31 and arranged along the axial direction of the fixed sleeve 31 in a reciprocating manner. A piston (not marked in the figure) for pushing the liquid medicine in the infusion tube 32 to feed is arranged in a port at the tail end of the infusion tube 32, and the push knife 33 is abutted with one end face, away from the liquid medicine, of the piston (not marked in the figure). With the infusion set of this structural design, can effectively increase the pipe length of transfer line 32 through twining the setting in the transfer line 32 of accomodating the groove 311, make the interior liquid medicine of transfer line impel the precision and obtain great promotion under the circumstances that does not increase equipment cost then.

Furthermore, in order to facilitate the axial sectioning of the infusion tube 32 on the side of the piston (not labeled in the figure) away from the liquid medicine by the push broach 33, further push the piston (not labeled in the figure) to feed forward, and enable the push broach 33 to move synchronously along the path of the accommodating groove 311 through the rotation of the fixed sleeve 31, preferably, a guide rod 34 is vertically erected on one side of the fixed sleeve 31 along the axial direction of the fixed sleeve 31, two ends of the guide rod 34 are fastened with the inner wall of the cavity of the housing, 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 head of the push broach 33 extends out of the accommodating groove 311. Thus, the push-type broach 33 cuts the infusion tube 32 along the receiving groove 311 and pushes the piston (not shown) to feed along with the rotation of the fixing sheath 31, and then the medical liquid is fed along the infusion tube 32.

Taking fig. 4 as an example, in the present embodiment, the fixing sleeve 31 is driven by the motor 2, the upper port of the fixing sleeve 31 keeps moving clockwise, at this time, the infusion tube 32 filled with the liquid medicine is continuously wound into the accommodating groove 311, at this time, the infusion tube 32 on the side of the piston (not labeled in the figure) away from the liquid medicine is cut open by the push-knife 33, and the piston (not labeled in the figure) 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 the high cost of the advancing part due to the short stroke of the piston, the length of the infusion tube 32 in the present embodiment is longer than the groove length of the receiving groove 311. The infusion tube is wound by the fixed sleeve, the push knife pushes the piston, dependence on high precision requirements of the pushing part is greatly reduced, and production cost of the whole infusion device is greatly reduced.

In order to facilitate the erection of the motor 2, in this embodiment, the inner bottom surface of the top cover 12 is provided with a positioning groove, 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 between the driving gear of the motor 2 and the inner circumferential surface of the opening end of the fixing sleeve 31, in this embodiment, gear teeth are uniformly distributed on the inner circumferential surface of the opening end of the fixing sleeve 31, and the gear teeth may be integrally machined on the inner circumferential surface of the opening end of the fixing sleeve 31 or may be separately embedded.

Further, in order to enable the fixing sleeve 31 to rotate smoothly under the driving action of the motor 2, in this embodiment, a shaft sleeve is coaxially embedded in the inner bottom surface of the fixing sleeve 31, 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 infusion tube 32 to slide in and out and reduce the abrasion of the infusion tube 32, a guide sleeve for penetrating the infusion tube 32 is further embedded in the housing wall of the housing of this embodiment.

Adopt above-mentioned structural design's infusion set, through twining in the setting of the transfer line 32 of the inslot 311 of accomodating of fixed cover 31 outer peripheral face, the effective pipe length that increases transfer line 32, and then make intraductal liquid medicine impel the precision and obtained very big promotion, simultaneously through the setting of motor 2 and fixed cover 31, very big reduction equipment manufacturing cost, reduced in the correlation technique because of the shorter propulsion structure cost who causes of piston (not marking in the picture) stroke problem high.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. An infusion device characterized by: 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, an accommodating groove spirally and concavely arranged on the peripheral surface of the fixed sleeve, an infusion tube of which the tail end is wound in the accommodating groove and the head end is exposed out of the shell, and a push broach erected on one side of the fixed sleeve and arranged along the axial direction of the fixed sleeve in a reciprocating manner; a piston for pushing liquid medicine in the infusion tube to feed is arranged in a port at the tail end of the infusion tube, and the push broach is matched with one end face of the piston, far away from the liquid medicine.

2. An infusion device according to claim 1, wherein: and 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.

3. An infusion device according to claim 2, wherein: the guide rod is sleeved with a sliding sleeve, the tail of the push broach is fastened on the sliding sleeve, and the head of the push broach extends out of the accommodating groove.

4. An infusion device according to claim 1, wherein: the length of the infusion tube is longer than the length of the accommodating groove.

5. An infusion device according to 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.

6. An infusion device according to claim 5, wherein: gear teeth are uniformly distributed on the inner circumferential surface of the opening end of the fixed sleeve and are meshed with a driving gear arranged at the end part of a driving shaft of the motor.

7. An infusion device according to 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 which is convexly arranged on the inner bottom surface of the cavity of the shell.

8. An infusion device according to claim 1, wherein: a guide sleeve for the infusion tube to penetrate through is embedded in the shell wall of the shell.

9. An infusion device according to claim 5, wherein: the casing includes casing down to and the lid is located the top cap of casing upper end mouth down, the interior bottom surface of top cap is provided with the constant head tank, bury underground in the constant head tank have the motor.