An infusion device for spiral cutting

Abstract

The present invention belongs to the technical field of medical devices, and specifically discloses an infusion device for spiral cutting, including a shell, a spiral receiving groove, an infusion tube, a driving member and a power device. The outer peripheral surface of the driving member is provided with a spiral groove, and the spiral groove is threadedly connected to the groove wall of the spiral receiving groove. The outer peripheral surface of the driving member is provided with a piston cutting member that matches the infusion tube. The infusion device designed with this structure can complete the feeding of the infusion tube medicine by the piston cutting member arranged between the shell and the driving member through the spiral connection between the shell and the driving member; the infusion tube is spirally arranged in the spiral receiving groove on the inner wall of the shell, and then a longer infusion tube is arranged in a limited volume. The present invention has a simple structure, and can effectively reduce the propulsion accuracy of the power device by extending the length of the infusion tube when the unit infusion volume and the volume of the infusion tube are certain, thereby reducing the production cost of the infusion device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an infusion device for spiral cutting. Background Art

[0002] The infusion tube in the infusion device under the prior art is improperly set up and lacks the necessary installation structure, which is not only inconvenient for the installation of the infusion tube, but also impossible to set a longer infusion tube within a limited volume; when the unit injection volume and the volume of the liquid medicine are determined, the length of the infusion tube directly affects the propulsion accuracy of the power device, that is, the propulsion accuracy requirements of the power device used for a shorter infusion tube will be higher, which in turn makes the production cost of the entire infusion device higher. Summary of the invention

[0003] The object of the present invention is to provide an infusion device for spiral cutting, which has a small volume and a compact structure and can effectively reduce production costs.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An infusion device for spiral cutting comprises a shell, a spiral receiving groove arranged on the inner wall of the shell, an infusion tube arranged in the spiral receiving groove, a driving member matched with the spiral receiving groove, and a power device matched with the driving member; a spiral groove is arranged on the outer circumference of the driving member, the spiral groove is threadedly connected with the groove wall of the spiral receiving groove, and a piston cutting member matched with the infusion tube is arranged on the outer circumference of the driving member.

[0006] Wherein, the piston cutting member includes a piston seat fastened to the driving member, a blade exposed at the root of the piston seat, and a piston arranged at the end of the piston seat, and the piston is inserted into the infusion tube.

[0007] Wherein, one end of the infusion tube away from the piston is exposed to the shell and an infusion needle is arranged at the port.

[0008] Wherein, the piston comprises a mounting portion matched with the piston seat, and an extension portion coaxially extending outwardly from one end of the mounting portion, and the extension portion is flexibly arranged.

[0009] Wherein, the outer extension is provided with annular sealing rings at intervals along the length direction, and the annular sealing rings are slidably matched with the inner wall of the infusion tube.

[0010] Wherein, the piston seat comprises a piston handle vertically fastened to the outer peripheral surface of the driving member, and a piston rod extending outward from a side wall of the piston handle, and the mounting portion is sleeved on the piston rod.

[0011] Wherein, the blade is arranged on a side of the piston handle close to the piston rod, and the cutting edge of the blade is arranged in the same direction as the piston rod.

[0012] The driving member is in the shape of a solid cylinder, and a first driving shaft is coaxially extended from both ends of the driving member, and the first driving shaft is connected to the power device.

[0013] The driving member is in the shape of a hollow cylinder, and is coaxially and tightly fitted with a second driving shaft, which is connected to the power device.

[0014] Wherein, the power device includes a bracket and a servo motor matched with the bracket, the driving member is pivotally connected to the bracket, and the power output end of the servo motor is connected to the power input end of the driving member.

[0015] The beneficial effects of the present invention are as follows: the present invention discloses an infusion device for spiral cutting, comprising a shell, a spiral receiving groove arranged on the inner wall of the shell, an infusion tube arranged in the spiral receiving groove, a driving member matched with the spiral receiving groove, and a power device matched with the driving member; a spiral groove is arranged on the outer circumference of the driving member, the spiral groove is threadedly connected with the groove wall of the spiral receiving groove, and a piston cutting member matched with the infusion tube is arranged on the outer circumference of the driving member. The infusion device designed with this structure can complete the feeding of the infusion tube medicine by the piston cutting member arranged between the shell and the driving member through the spiral connection between the shell and the driving member; the infusion tube is spirally arranged in the spiral receiving groove on the inner wall of the shell, and then a longer infusion tube is arranged in a limited volume. The present invention has a simple structure, and can effectively reduce the propulsion accuracy of the power device by extending the length of the infusion tube under the condition of a certain unit infusion volume and the volume of the infusion tube, thereby reducing the production cost of the infusion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of an infusion device for spiral cutting in this embodiment.

[0017] Figure 2 yes Figure 1 Assembly drawing of .

[0018] Figure 3 yes Figure 1 Exploded view of the piston cutter.

[0019] Figure 4 yes Figure 1 Assembly drawing of the piston cutting parts.

[0020] In the figure:

[0021] 1. Shell; 11. Spiral storage groove;

[0022] 2. Infusion tube;

[0023] 3. driving member; 31. spiral groove;

[0024] 4. Piston cutting piece; 41. Piston seat; 411. Piston handle; 412. Piston rod; 42. Blade; 43. Piston; 431. Mounting part; 432. Extension part. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] Figure 1 is an exploded view of an infusion device for spiral cutting in this embodiment; Figure 2 yes Figure 1 Assembly drawing of Figure 3yes Figure 1 Exploded view of the middle piston cutting piece; Figure 4 yes Figure 1 Assembly drawing of the piston cutting parts. Figures 1 to 4 As shown, the infusion device in this embodiment spirally sets the infusion tube 2 in the spiral receiving groove 11 on the inner wall of the shell 1, and drives the liquid medicine in the infusion tube 2 by the piston cutting member 4 set on the driving member 3. In this way, under the condition of a certain unit infusion volume and infusion tube volume, the infusion accuracy can be guaranteed while the propulsion accuracy of the power device can be effectively reduced by extending the length of the infusion tube 2, thereby reducing the production cost of the infusion device.

[0030] Specifically, the present embodiment provides an infusion device for spiral cutting, which consists of several parts such as a shell 1, an infusion tube 2, a driving member 3 and a power device. Preferably, when the volume of the infusion device is certain, in order to accommodate an infusion tube 2 of sufficient length as much as possible, the present embodiment is provided with a spiral receiving groove 11 on the inner wall of the shell 1, and the infusion tube 2 is stored in the spiral receiving groove 11. Thereafter, the groove wall of the spiral receiving groove 11 is screwed to a spiral groove 31 provided on the outer peripheral surface of the driving member 3. In order to drive the liquid medicine in the infusion tube 2 to feed forward, the present embodiment is also provided with a piston cutting member 4 on the outer peripheral surface of the driving member 3 that cooperates with the infusion tube 2. The driving member 3 is driven by the power device to rotate circumferentially around the shell axis, thereby driving the piston cutting member 4 to move along the length direction of the infusion tube 2.

[0031] Further preferably, the piston cutting member 4 in this embodiment includes a piston seat 41 fastened to the driving member 3, a blade 42 exposed at the root of the piston seat 41, and a piston 43 arranged at the end of the piston seat 41. The piston 43 is inserted into the infusion tube 2 to push the liquid medicine in the infusion tube 2 forward. In addition, in this embodiment, one end of the infusion tube 2 away from the piston 43 is exposed to the shell 1 and an infusion needle is arranged at the port to facilitate infusion.

[0032] Furthermore, as a preference, the piston seat 41 in this embodiment includes a piston handle 411 vertically fastened to the outer peripheral surface of the driving member 3, and a piston rod 412 extending from a side wall of the piston handle 411. While the piston 43 drives the feeding of the liquid medicine in the infusion tube 2, in order to prevent the empty infusion tube 2 from hindering the movement of the piston cutting member 4, this embodiment also provides a blade 42 on the side of the piston handle 411 close to the piston rod 412, and the blade 42 is arranged in the same direction as the piston rod 412, so that the empty tube of the infusion tube 2 is cut open by the blade 42, so that the piston seat 41 can be fed forward normally, that is, the piston cutting member 4 pushes the feeding of the liquid medicine while cutting the empty infusion tube 2, and then moves normally along the length direction of the infusion tube 2.

[0033] Preferably, the piston 43 in this embodiment includes a mounting portion 431 that cooperates with the piston seat 41, and an extension portion 432 that coaxially extends outward from one end of the mounting portion 431, wherein the mounting portion 431 is sleeved on the piston rod 412, and the extension portion 432 is provided with annular sealing rings at intervals along the length direction, and the annular sealing rings are slidably matched with the inner wall of the infusion tube 2. Further preferably, the extension portion 432 in this embodiment is flexibly arranged, that is, through the connection of adjacent annular sealing rings, it meets the spiral arrangement of the infusion tube 2.

[0034] As a further preference, the driving member 3 in this embodiment can be set in a solid cylindrical shape, and then a first driving shaft is extended on both end surfaces of the driving member 3, and then the first driving shaft is connected to the above-mentioned power device to realize the rotation of the driving member 3; or according to design requirements, the driving member 3 can be set in a hollow cylindrical shape, and then a second driving shaft is coaxially tightly fitted to the driving member 3, and the same second driving shaft is connected to the above-mentioned power device. The power devices in the above two implementation forms can be set as servo motors.

[0035] As a further preferred embodiment, the power device in this embodiment includes a bracket and a servo motor matched with the bracket. With this structurally designed power device, the driving member is pivotally connected to the bracket, and then the power output end of the servo motor is connected to the power input end of the driving member. Finally, the housing 1 is fixed to the external component to achieve the infusion of the liquid medicine in the infusion tube. In this embodiment, the specific structural settings of the power device are commonly used in related technologies and will not be described in detail here.

[0036] For the infusion device with the above-mentioned structural design, taking 3000μl of insulin as an example, it is placed in a single infusion tube 2 with a total stroke length of 30mm for injection, and its 0.1μl unit volume of insulin requires the power device to have a propulsion accuracy of 0.001mm; and if the 3000μl volume of insulin is placed in an infusion tube 2 with a length of 300mm according to the injection method in this embodiment and injected, the same 0.1μl unit volume of insulin only requires a power device with a propulsion accuracy of 0.01mm to achieve the same effect. Therefore, the infusion device designed by this embodiment is not only convenient for storing a longer infusion tube 2 in a smaller volume, but also can effectively reduce the propulsion accuracy of the power device and can achieve the same infusion accuracy, thereby effectively reducing the production cost of the infusion device.

[0037] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An infusion device for spiral cutting, characterized in that: The invention comprises a housing, a spiral receiving groove arranged on the inner wall of the housing, an infusion tube arranged in the spiral receiving groove, a driving member matched with the spiral receiving groove, and a power device matched with the driving member; a spiral groove is arranged on the outer circumference of the driving member, the spiral groove is threadedly connected with the groove wall of the spiral receiving groove, and a piston cutting member matched with the infusion tube is arranged on the outer circumference of the driving member; The piston cutting member comprises a piston seat fastened to the driving member, a blade exposed at the root of the piston seat, and a piston arranged at the end of the piston seat, and the piston is inserted into the infusion tube; The piston comprises a mounting portion matched with the piston seat, and an extension portion coaxially extending outwardly from one end of the mounting portion, wherein the extension portion is flexibly arranged; The outer extension is provided with annular sealing rings at intervals along the length direction, and the annular sealing rings are slidably matched with the inner wall of the infusion tube; The piston seat comprises a piston handle vertically fastened to the outer peripheral surface of the driving member, and a piston rod extending outward from a side wall of the piston handle, and the mounting portion is sleeved on the piston rod; The blade is arranged on one side of the piston handle close to the piston rod, and the cutting edge of the blade is arranged in the same direction as the piston rod.

2. The infusion device for spiral cutting according to claim 1, characterized in that: One end of the infusion tube away from the piston is exposed from the shell and an infusion needle is arranged at the port.

3. The infusion device for spiral cutting according to claim 1, characterized in that: The driving member is arranged in a solid cylindrical shape, and a first driving shaft is coaxially extended from both ends of the driving member, and the first driving shaft is connected to the power device.

4. The infusion device for spiral cutting according to claim 1, characterized in that: The driving member is arranged in a hollow cylindrical shape, and is coaxially and tightly equipped with a second driving shaft, and the second driving shaft is connected to the power device.

5. The infusion device for spiral cutting according to claim 1, characterized in that: The power device includes a bracket and a servo motor matched with the bracket. The driving member is pivotally connected to the bracket, and the power output end of the servo motor is connected to the power input end of the driving member.

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