Pump door mechanism and infusion device

Abstract

The utility model discloses a pump door mechanism and an infusion device, and relates to the technical field of medical instruments. The pump door mechanism comprises a pressing block and a sliding piece. The pressing block is provided with a pressed side opposite to the pump body mechanism, and the pressed side is provided with a first end and a second end. The sliding piece is connected with the pressing block, and the interval between the first end and the second end relative to the pump body mechanism can be adjusted by moving the sliding piece. The pump door mechanism solves the technical problem that in the long-term use process of an existing pump door mechanism, the infusion precision is affected due to the change of the parallelism.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a pump door mechanism and an infusion device. Background Art

[0002] At present, in the medical field, the traditional manual infusion method has been broken through, and the infusion is realized by using an infusion device with a pump as the main body, which has a high infusion accuracy. The infusion device generally includes a pump door mechanism and a pump body mechanism. The infusion tube is arranged between the pump door mechanism and the pump body mechanism. The pump body mechanism applies force to the infusion tube to cooperate with the pump door mechanism to realize the flow of the liquid in the infusion tube. During the long-term use of the existing pump door mechanism, it will be deflected, that is, the parallelism changes, so that the gap between the pump body mechanism and the pump door mechanism is too large or too small at some positions, affecting the infusion accuracy. Summary of the Utility Model

[0003] In view of this, the utility model provides a pump door mechanism and an infusion device, which are used to solve the technical problem that the existing pump door mechanism will affect the infusion accuracy due to the change of parallelism during the long-term use.

[0004] In order to solve the above technical problem, the first technical solution adopted by the utility model is as follows:

[0005] A pump door mechanism, the pump door mechanism includes:

[0006] A pressing block, which has a pressure-receiving side opposite to the pump body mechanism, and the pressure-receiving side has a first end and a second end;

[0007] And a sliding member, which is connected to the pressing block, and moving the sliding member can adjust the intervals between the first end and the second end relative to the pump body mechanism.

[0008] In some embodiments of the pump door mechanism, the pressing block is provided with a first inclined surface and / or a second inclined surface. The first inclined surface is arranged at the first end, the second inclined surface is arranged at the second end, and the first inclined surface and / or the second inclined surface abut against the sliding member; or

[0009] The sliding member is provided with a first inclined surface and / or a second inclined surface. The first inclined surface abuts against the first end, and the second inclined surface abuts against the second end.

[0010] In some embodiments of the pump door mechanism, the pressing block is provided with a first protruding portion and a second protruding portion. The first protruding portion is arranged at the first end, the second protruding portion is arranged at the second end, the pressing block is provided with a first inclined surface and a second inclined surface, the first inclined surface is arranged on the first protruding portion, and the second inclined surface is arranged on the second protruding portion;

[0011] The sliding member is provided with a first protrusion and / or a second protrusion, the first protrusion is provided with a third inclined surface, the second protrusion is provided with a fourth inclined surface, the third inclined surface is used to fit with the first inclined surface, and the fourth inclined surface is used to fit with the second inclined surface.

[0012] In some embodiments of the pump door mechanism, the sliding member is ring-shaped, the sliding member is sleeved on the pressing block, and the first protrusion and the second protrusion are both arranged on the inner wall of the sliding member.

[0013] In some embodiments of the pump door mechanism, a third protrusion is provided on the side wall of the pressure block, and the third protrusion is located between the first protrusion and the second protrusion and can abut against the sliding member.

[0014] In some embodiments of the pump door mechanism, the pump door mechanism further includes a pressure cover and an elastic member, wherein the pressure cover is arranged on a side of the pressure block away from the pump body mechanism, and one end of the elastic member is connected to the pressure cover, and the other end is connected to the pressure block.

[0015] In some embodiments of the pump door mechanism, a groove is formed on a side of the pressure block facing away from the pump body mechanism, and the elastic member is connected to the bottom of the groove.

[0016] In some embodiments of the pump door mechanism, the pump door mechanism further comprises a transmission member, wherein the transmission member is connected to the sliding member and is used to drive the sliding member to move under an external force.

[0017] In some embodiments of the pump door mechanism, the sliding member is provided with a first toothed portion, and the transmission member is provided with a second toothed portion that can be meshed and connected with the first toothed portion, so as to drive the sliding member to move under an external force.

[0018] In order to solve the above technical problems, the second technical solution adopted by the utility model is:

[0019] An infusion device comprises an infusion tube, a pump body mechanism and the pump door mechanism described in the above embodiments, wherein the pump body mechanism and the pump door mechanism are arranged at intervals, and the infusion tube is passed through the interval between the pump body mechanism and the pump door mechanism. The pump body mechanism is used to apply force to the infusion tube to press the infusion tube toward the pump door mechanism, thereby driving the liquid in the infusion tube to flow.

[0020] Implementing the embodiments of the present utility model will have at least the following beneficial effects:

[0021] The above-mentioned pump door mechanism is applied to an infusion device, which can facilitate the adjustment of the parallelism between the pump door mechanism and the pump body mechanism for itself and the infusion device. Specifically, the pump door mechanism of the present invention is provided with a sliding member. Moving the sliding member can adjust the intervals between the first end and the second end of the pressing block relative to the pump body mechanism. By such an adjustment method, the parallelism of the pressure-receiving side relative to the pump body mechanism can be adjusted, avoiding affecting the infusion accuracy due to the problem of parallelism between the pump body mechanism and the pressing block, and solving the technical problem that the infusion accuracy will be affected due to the change of parallelism during the long-term use of the existing pump door mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of a partial structure of an infusion device in an embodiment;

[0024] Figure 2 It is a top view of a partial structure of an infusion device in an embodiment;

[0025] Figure 3 It is a structural sectional view of a pump door mechanism in an embodiment;

[0026] Figure 4 It is a schematic diagram of the structure of a pressing block in an embodiment;

[0027] Figure 5 It is a schematic diagram of the structure of a sliding member in an embodiment.

[0028] Wherein:

[0029] 1. Pump door mechanism; 11. Pressing block; 111. Pressure-receiving side; 1111. First end; 1112. Second end; 112. First protruding portion; 1121. First inclined surface; 113. Second protruding portion; 1131. Second inclined surface; 114. Third protruding portion; 115. Groove; 12. Sliding member; 121. First protrusion; 1211. Third inclined surface; 122. Second protrusion; 1221. Fourth inclined surface; 123. First toothed portion; 13. Pressing cover; 14. Elastic member; 15. Transmission member; 151. Second toothed portion;

[0030] 2. Pump body mechanism; 3. Infusion device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] For ease of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element for indirect connection. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] As Figures 1-5 shown, in an embodiment of a pump door mechanism 1, the pump door mechanism 1 includes a pressing block 11 and a sliding member 12. The pressing block 11 is provided with a pressure-receiving side 111 relative to the pump body mechanism 2, and the pressure-receiving side 111 has a first end 1111 and a second end 1112. The sliding member 12 is connected to the pressing block 11, and moving the sliding member 12 can adjust the interval between the first end 1111 and the second end 1112 relative to the pump body mechanism 2. The sliding member 12 can reciprocate relative to the pressing block 11. During the reciprocating sliding process of the sliding member 12, the interval between the first end 1111 and the second end 1112 relative to the pump body mechanism 2 can be adjusted simultaneously, and thus the parallelism of the pressure-receiving side 111 relative to the pump body mechanism 2 can be adjusted.

[0035] In this embodiment, moving the sliding member 12 can adjust the interval between the first end 1111 and the second end 1112 of the pressing block 11 relative to the pump body mechanism 2. By such an adjustment method, the parallelism of the pressure-receiving side 111 relative to the pump body mechanism 2 can be adjusted, avoiding the influence on the infusion accuracy due to the parallelism problem between the pump body mechanism 2 and the pressing block 11, and solving the technical problem that the existing pump door mechanism 1 will affect the infusion accuracy due to the change of parallelism during long-term use.

[0036] It can be understood that the pump door mechanism 1 in this embodiment is provided on the infusion device 3, and both the pressing block 11 and the sliding member 12 are connected to the infusion device 3, specifically, it can be on the outer shell or the frame of the infusion device 3. Specifically, the sliding direction of the sliding member 12 can be the horizontal direction, while the arrangement direction of the pressing block 11 and the pump body mechanism 2 can be the vertical direction. Further, the moving mode of the sliding member 12 is reciprocating. For example, it slides left and right along the horizontal direction. When sliding left, one of the first end 1111 and the second end 1112 approaches the pump body mechanism 2, and the other end moves away. When sliding right, it is the opposite.

[0037] Specifically, in an embodiment of the pump door mechanism 1, the pressing block 11 is provided with a first inclined surface 1121 and / or a second inclined surface 1131. The first inclined surface 1121 is provided at the first end 1111, the second inclined surface 1131 is provided at the second end 1112, and the first inclined surface 1121 and / or the second inclined surface 1131 abuts against the sliding member 12. Alternatively, the sliding member 12 is provided with a first inclined surface and / or a second inclined surface, the first inclined surface abuts against the first end 1111, and the second inclined surface abuts against the second end 1112.

[0038] In this embodiment, it can be understood that the movement of the sliding member 12 can adjust the interval between the first end 1111 and the second end 1112 relative to the pump body mechanism 2 through the inclined surfaces provided on the pressing block 11 and / or the sliding member 12. By providing the inclined surfaces, during the movement of the sliding member 12, taking one end of the pressing block 11 as an example, a lifting or lowering action will be formed, thereby adjusting the distance from the pump body mechanism 2.

[0039] Further, in an embodiment of the pump door mechanism 1, the pressing block 11 is provided with a first protruding portion 112 and a second protruding portion 113. The first protruding portion 112 is provided at the first end 1111, the second protruding portion 113 is provided at the second end 1112. The pressing block 11 is provided with a first inclined surface 1121 and a second inclined surface 1131. The first inclined surface 1121 is provided on the first protruding portion 112, and the second inclined surface 1131 is provided on the second protruding portion 113. The sliding member 12 is provided with a first protrusion 121 and / or a second protrusion 122. A third inclined surface 1211 is provided on the first protrusion 121, and a fourth inclined surface 1221 is provided on the second protrusion 122. The third inclined surface 1211 is used to fit with the first inclined surface 1121, and the fourth inclined surface 1221 is used to fit with the second inclined surface 1131.

[0040] In this embodiment, by providing the first inclined surface 1121 and the second inclined surface 1131, during the movement of the sliding member 12, both the first protrusion 121 and the second protrusion 122 will generate pressure applied to the inclined surface, so that the pressing block 11 can be tilted, thus achieving the effect of adjusting the parallelism of the pressure-receiving side 111 of the pressing block 11 relative to the pump body mechanism 2. Moreover, the provision of the first protruding portion 112 and the second protruding portion 113 facilitates the machining of the first inclined surface 1121 and the second inclined surface 1131.

[0041] In addition, by providing inclined surfaces on the first protrusion 121 and / or the second protrusion 122 as well, it can better fit with the inclined surfaces on the pressing block 11, can increase the contact area with the first inclined surface 1121 and the second inclined surface 1131 while applying pressure, is more stable during adjustment, and has a longer service life.

[0042] In an embodiment of a pump door mechanism 1, the sliding member 12 is annular in shape, the sliding member 12 is sleeved on the pressing block 11, and both the first protrusion 121 and the second protrusion 122 are provided on the inner wall of the sliding member 12.

[0043] In this embodiment, the sliding member 12 can be a rectangular annular frame structure, and its inner diameter size can be set to match the outer wall size of the pressing block 11, so as to achieve the effect of restricting the moving direction of the pressing block 11, playing a guiding role, and also being able to reduce the overall volume of the pump door mechanism 1, making the structure compact together and having better stability in use.

[0044] Specifically, in combination with the previous embodiment, the pressing block 11 can be a rectangular block-shaped structural member. It should be noted that the pressure-receiving side 111 of the pressing block 11 is the side close to and relative to the pump body mechanism 2, and the first protruding portion 112 and the second protruding portion 113 can be provided on the side wall of the pressing block 11, and the first protruding portion 112 and the second protruding portion 113 can be wedge-shaped structures.

[0045] In an embodiment of a pump door mechanism 1, a third protruding portion 114 is provided on the side wall of the pressing block 11, and the third protruding portion 114 is located between the first protruding portion 112 and the second protruding portion 113 and can be in contact with the sliding member 12.

[0046] In this embodiment, specifically, the third protruding portion 114 can be a long rectangular block-shaped structural member. During the process of the pressing block 11 being pressed by the sliding member 12 to adjust its posture, it will move. By providing the third protruding portion 114, it can achieve the effect of being in contact with the sliding member 12, which can not only play the role of clamping the sliding member 12, but also play a prompting effect.

[0047] Preferably, there are two third protrusions 114, which are respectively arranged on opposite sides of the pressing block 11 and are both located between the first protrusion 112 and the second protrusion 113, so that they can form a four-side abutment relationship with the sliding member 12, further improving stability and avoiding tilting and misalignment.

[0048] In an embodiment of the pump door mechanism 1, the pump door mechanism 1 also includes a pressure cover 13 and an elastic member 14. The pressure cover 13 is arranged on the side of the pressure block 11 away from the pump body mechanism 2. One end of the elastic member 14 is connected to the pressure cover 13, and the other end is connected to the pressure block 11.

[0049] In this embodiment, the elastic member 14 can play a role of elastic buffer when cooperating with the pump body mechanism 2. During the sliding adjustment process of the sliding member 12, the elastic member 14 will also store energy. Combined with the elastic rebound of the elastic member 14, the pressure block 11 can be prevented from getting stuck, thereby achieving a better adjustment effect.

[0050] Specifically, it can be understood that, in the infusion device 3 , the position of the pressure cover 13 is fixed on the infusion device 3 .

[0051] In an embodiment of the pump door mechanism 1 , a groove 115 is formed on a side of the pressure block 11 facing away from the pump body mechanism 2 , and the elastic member 14 is connected to the bottom of the groove 115 .

[0052] In this embodiment, the groove 115 is provided to accommodate the elastic member 14 , which can reduce the weight of the pressing block 11 on the one hand, and make the pump door mechanism 1 compact and reduce its volume on the other hand.

[0053] Specifically, the elastic member 14 may be a spring. Preferably, a hollow column may be provided at the bottom of the groove 115, and the elastic member 14 may be partially accommodated in the hollow column, which can guide the elastic force direction of the elastic member 14 and prevent the elastic member 14 from tilting.

[0054] Specifically, the pressure cover 13 can be a box-shaped structural member, and the elastic member 14 is connected to the bottom of the box to achieve a sealing effect.

[0055] In an embodiment of the pump door mechanism 1, the pump door mechanism 1 further comprises a transmission member 15, which is connected to the sliding member 12 and is used to drive the sliding member 12 to move under an external force. The sliding member 12 is provided with a first toothed portion 123, and the transmission member 15 is provided with a second toothed portion 151 that can be meshed and connected with the first toothed portion 123, so as to drive the sliding member 12 to move under an external force.

[0056] In this embodiment, specifically, the transmission member 15 can be a gear, which is installed on the outer shell of the infusion device 3 and can rotate. The engagement between the transmission member 15 and the sliding member 12 is similar to the structure of a gear and rack, which can facilitate the adjustment by the staff. And when the transmission member 15 is of a rotary type, it can also occupy space.

[0057] Preferably, the transmission member 15 is located between the first protruding portion 112 and the second protruding portion 113. The number of the transmission members 15 can be two, and the two transmission members 15 correspond to the third protruding portion 114 in the previous embodiment. Two first tooth-shaped portions 123 are also provided. By providing two transmission members 15, it can facilitate the staff to operate the nearby transmission member 15.

[0058] The present invention also relates to an infusion device 3, which includes an infusion tube, a pump body mechanism 2, and the pump door mechanism 1 in the previous embodiment. The pump body mechanism 2 and the pump door mechanism 1 are arranged at intervals. The infusion tube passes through the interval between the pump body mechanism 2 and the pump door mechanism 1. The pump body mechanism 2 is used to apply force to the infusion tube to press the infusion tube against the pump door mechanism 1, so as to drive the liquid in the infusion tube to flow.

[0059] By applying the pump door mechanism 1 in the previous embodiment, it can cooperate with the pump body mechanism 2 to achieve the technical effect of driving the liquid in the infusion tube to flow. And because the pump door mechanism 1 in the previous embodiment can conveniently adjust the parallelism with the pump body mechanism 2, it can also achieve the effect of keeping the infusion device 3 running stably for a long time. The parallelism between the pump body mechanism 2 and the pressing block 11 is shown as Figure 1 indicated by reference numeral A in the figure.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0061] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A pump door mechanism, characterized in that: include: A pressure block is provided with a pressure-receiving side opposite to the pump body mechanism, the pressure-receiving side having a first end and a second end; and a sliding member connected to the pressing block, wherein the distance between the first end and the second end relative to the pump body mechanism can be adjusted by moving the sliding member.

2. The pump door mechanism according to claim 1, characterized in that: The pressing block is provided with a first inclined surface and / or a second inclined surface, the first inclined surface is provided at the first end, the second inclined surface is provided at the second end, and the first inclined surface and / or the second inclined surface abuts against the sliding member; or The sliding member is provided with a first inclined surface and / or a second inclined surface, the first inclined surface abuts against the first end, and the second inclined surface abuts against the second end.

3. The pump door mechanism according to claim 2, characterized in that: The pressing block is provided with a first protruding portion and a second protruding portion, the first protruding portion is provided at the first end, the second protruding portion is provided at the second end, the pressing block is provided with a first inclined surface and a second inclined surface, the first inclined surface is provided at the first protruding portion, and the second inclined surface is provided at the second protruding portion; The sliding member is provided with a first protrusion and / or a second protrusion, the first protrusion is provided with a third inclined surface, the second protrusion is provided with a fourth inclined surface, the third inclined surface is used to fit with the first inclined surface, and the fourth inclined surface is used to fit with the second inclined surface.

4. The pump door mechanism according to claim 3, characterized in that: The sliding member is annular in shape, and is sleeved on the pressing block. The first protrusion and the second protrusion are both arranged on the inner wall of the sliding member.

5. The pump door mechanism according to claim 4, characterized in that: A third protrusion is provided on the side wall of the pressing block. The third protrusion is located between the first protrusion and the second protrusion and can abut against the sliding member.

6. The pump door mechanism according to claim 1, characterized in that: The pump door mechanism further comprises a pressure cover and an elastic member. The pressure cover is arranged on a side of the pressure block away from the pump body mechanism. One end of the elastic member is connected to the pressure cover, and the other end is connected to the pressure block.

7. The pump door mechanism according to claim 6, characterized in that: A groove is formed on a side of the pressure block away from the pump body mechanism, and the elastic member is connected to the bottom of the groove.

8. The pump door mechanism according to claim 1, characterized in that: The pump door mechanism also includes a transmission member, which is connected to the sliding member and is used to drive the sliding member to move under external force.

9. The pump door mechanism according to claim 8, characterized in that: The sliding member is provided with a first toothed portion, and the transmission member is provided with a second toothed portion that can be meshed and connected with the first toothed portion, so as to drive the sliding member to move under an external force.

10. An infusion device, characterized in that: It comprises an infusion tube, a pump body mechanism and a pump door mechanism as described in any one of claims 1 to 9, wherein the pump body mechanism and the pump door mechanism are spaced apart, the infusion tube is passed through the space between the pump body mechanism and the pump door mechanism, and the pump body mechanism is used to apply force to the infusion tube to press the infusion tube toward the pump door mechanism, thereby driving the liquid in the infusion tube to flow.

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