Pump connecting structure and medical pump

Abstract

The invention relates to a pump connecting structure and a medical pump. The pump connecting structure comprises a pump head fixing piece arranged at the top of a pump machine; the pump head is detachably installed on the pump head fixing piece, the position, facing the pump head fixing piece, of the pump head is provided with a locking part and a guide inclined face, and the guide inclined face is used for guiding the pump head to rotate relative to the pump head fixing piece, so that the pump head is gradually away from the pump head fixing piece through the guide inclined face during rotary disassembly; and the locking assembly is movably arranged on the pump head fixing piece, and the locking assembly is used for being matched with the locking part so as to lock or unlock the pump head on the pump head fixing piece. Due to the effect of the guide inclined plane, the pump head can be gradually away from the pump head fixing piece in the rotating process, and the axial distance between the pump head and the pump head fixing piece is increased. Therefore, the magnetic attraction force of the pump machine to the pump head in the vertical direction can be weakened, the magnetic attraction force borne by the pump head when the pump head is pulled out is reduced, the pump head can be taken out more easily and conveniently, and the pump head can be disassembled conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a pump connection structure and a medical pump. Background Art

[0002] The principle of the extracorporeal life support system is to draw the venous blood out of the body, oxygenate it through an artificial heart-lung bypass made of special materials, and then inject it into the patient's arterial or venous system, playing the role of extracorporeal respiratory support or cardiac support, and maintaining the oxygenated blood supply to the human organs and tissues. The system usually includes intravascular cannula, connecting tube, medical pump (artificial heart), oxygenator (artificial lung), oxygen supply tube and host.

[0003] Among them, the medical pump mainly drives the centrifugal pump head to rotate to achieve blood flow, which is generally composed of two parts: the pump head and the driving pump machine. At present, the pump head is a disposable consumable, and is installed by docking with the pump machine through a locking structure so that the pump head can be reliably locked to the top of the pump machine through the locking structure. Usually, the pump head is driven by magnetic force, and there is a magnetic attraction between the pump head and the pump machine. Therefore, when the magnetic force is large, when the medical pump needs to be disassembled after use, it will be difficult to directly pull out the pump head due to the existence of magnetic force, which is not convenient for disassembly of the pump head. Summary of the invention

[0004] Based on this, it is necessary to provide a pump connection structure and a medical pump to address the problem that the pump head is difficult to pull out due to the presence of magnetic force when the pump head is disassembled. The structure can weaken the magnetic force applied to the pump head when it is disassembled, making it easier to disassemble and pull out the pump head and easier to use.

[0005] A pump connection structure, comprising:

[0006] A pump head fixing part is arranged on the top of the pump machine;

[0007] A pump head is detachably mounted on the pump head fixing member, wherein the pump head has a locking portion and a guide slope at a position facing the pump head fixing member, wherein the guide slope is used to guide the pump head to rotate relative to the pump head fixing member, so that the pump head gradually moves away from the pump head fixing member through the guide slope when being rotated and removed; and

[0008] A locking assembly is movably arranged on the pump head fixing piece, and the locking assembly is used to cooperate with the locking portion to lock or unlock the pump head on the pump head fixing piece.

[0009] In one embodiment of the present application, the guide bevel has a first end and a second end that are relatively arranged, the first end is smoothly connected to the surface of the pump head or protrudes from the surface of the pump head, the second end extends toward the pump head fixing part, the guide bevel is obliquely connected to the first end and the second end, and the height of the second end is higher than the height of the first end.

[0010] In an embodiment of the present application, the locking portion is disposed at the second end.

[0011] In one embodiment of the present application, there are multiple guide slopes, and the multiple guide slopes are arranged on the pump head at intervals along the circumferential direction.

[0012] In one embodiment of the present application, the pump head further comprises a guide plate, the guide plate is arranged on a surface of the pump head facing the pump head fixing member, and the guide slope is arranged on the guide plate.

[0013] In one embodiment of the present application, the pump head fixing member has a recessed portion, the recessed portion is recessed relative to the surface of the pump head fixing member, and the recessed portion is used to accommodate the guiding inclined surface.

[0014] In one embodiment of the present application, the side surface of the recessed portion is a vertical surface or an inclined surface, and the side surface of the recessed portion can abut against the guiding inclined surface.

[0015] In one embodiment of the present application, the locking assembly includes a locking member and an unlocking member, and the locking member and the unlocking member are movably arranged on the pump head fixing member, one end of the locking member is used to lock with the locking portion so that the pump head and the pump head fixing member are in a locked state, and the unlocking member cooperates with the locking member to drive the locking member to rotate, so that the locking member disengages from the locking portion, thereby putting the pump head and the pump head fixing member in an unlocked state.

[0016] In one embodiment of the present application, the locking member includes a lock catch and a supporting portion located at both ends of the locking member, the lock catch is used to cooperate with the locking portion, the supporting portion is arranged on the movement path of the unlocking member, and the unlocking member is used to support the supporting portion to rotate the locking member to drive the lock catch to move and release the lock on the locking portion.

[0017] In one embodiment of the present application, the locking member includes a rotating arm, the supporting portion and the locking buckle are respectively connected to the rotating arm, and the locking member rotates around the rotating arm to switch the pump head and the pump head fixing member between the locked state and the unlocked state.

[0018] In one embodiment of the present application, the locking assembly further comprises a first elastic member, one end of the first elastic member is connected to the locking member, and the other end is fixed to the pump head fixing member, and the first elastic member is used to reset the locking member.

[0019] In one embodiment of the present application, the locking assembly further includes a second elastic member, one end of which is connected to the unlocking member, and the other end is fixed to the pump head fixing member, and the second elastic member is used to enable the unlocking member to achieve reciprocating motion.

[0020] In one embodiment of the present application, the unlocking member includes a sliding portion and a toggle portion, the sliding portion is connected to the second elastic member, the toggle portion is connected to the sliding portion, and the toggle portion protrudes from the outer wall of the pump head fixing member;

[0021] The pump head fixing member is provided with a sliding track, the sliding portion is slidably arranged on the sliding track, and the abutting portion is arranged on the sliding track.

[0022] A medical pump comprises a pump machine and a pump connection structure as described in any of the above technical features, wherein the pump connection structure comprises a pump head, a pump head fixing member and a locking assembly, wherein the pump head fixing member is fixedly arranged on the top of the pump machine, and the pump head is detachably mounted on the pump head fixing member through the locking assembly.

[0023] After adopting the above technical solution, this application has at least the following technical effects:

[0024] The pump connection structure and medical pump of the present application, in which the pump connection structure, the pump head can be detachably installed in the pump head fixing part, the locking assembly is movably arranged on the pump head fixing part to unlock or lock the pump head, the position of the pump head facing the pump head fixing part has a locking portion and a guide slope, the locking portion can cooperate with the locking assembly to lock or unlock, the guide slope can guide the pump head to slide relative to the pump head fixing part to guide the disassembly of the pump head, so that the pump head gradually moves away from the pump head fixing part through the guide slope during the rotational disassembly process, thereby facilitating the disassembly of the pump head.

[0025] The pump connection structure is provided with a guide bevel on the pump head, and the pump head is guided to be disassembled from the pump head fixing piece by the guide bevel. Thus, after the locking assembly unlocks the locking part, the pump head is rotated so that the pump head slides along the pump head fixing piece through the guide bevel. Moreover, due to the effect of the guide bevel, the pump head will gradually move away from the pump head fixing piece during the rotation process, thereby increasing the axial distance between the pump head and the pump head fixing piece. In this way, the vertical magnetic attraction of the pump machine to the pump head can be weakened, thereby reducing the magnetic attraction of the pump head when it is pulled out, making it easier to remove the pump head and convenient to disassemble the pump head. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a pump connection structure according to an embodiment of the present application installed on a pump machine.

[0027] Figure 2 for Figure 1 A perspective view of the pump head in the pump connection structure shown.

[0028] Figure 3 for Figure 1 Exploded view of the pump connection shown.

[0029] Figure 4 for Figure 3 A schematic diagram of the pump head entering the pump head fixing member in the pump connection structure shown.

[0030] Figure 5 for Figure 4 A schematic diagram of a pump connection structure in which a pump head and a pump head fixing member are in a locked state is shown.

[0031] Figure 6 for Figure 4 A schematic diagram of a pump connection structure in which the pump head and the pump head fixing member are in an unlocked state is shown.

[0032] Wherein: 10, pump connection structure; 100, pump head fixing member; 110, recessed portion; 200, pump head; 210, guide slope; 211, first end; 212, second end; 220, locking portion; 230, guide plate; 300, locking assembly; 310, locking member; 311, lock buckle; 3111, guide surface; 312, supporting portion; 313, rotating arm; 320, unlocking member; 321, sliding portion; 322, toggle portion; 330, first elastic member; 340, second elastic member; 50, pump machine. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] See also Figures 1 to 3 The present application provides a medical pump and a pump connection structure 10. The pump connection structure 10 is applied to the medical pump. Specifically, the medical pump includes a pump machine 50 and the pump connection structure 10, and the pump connection structure 10 is arranged on the pump machine 50. After the pump connection structure 10 is applied to the medical pump, blood flow can be achieved by driving the pump machine 50 to rotate. Figure 1This is a schematic diagram of a pump connection structure 10 installed on a pump machine 50 according to an embodiment of the present application. Figure 2 for Figure 1 The three-dimensional view of the pump head 200 in the pump connection structure 10 is shown. Figure 3 for Figure 1 The exploded view of the pump connection structure 10 is shown. The pump connection structure 10 of the present application can weaken the vertical magnetic attraction of the pump machine 50 on the pump head 200, thereby reducing the magnetic attraction of the pump head 200 when it is pulled out, making the removal of the pump head 200 more labor-saving and convenient, and facilitating the disassembly of the pump head 200. The specific structure of the pump connection structure 10 of an embodiment is introduced below.

[0040] See also Figures 1 to 6 In one embodiment, the pump connection structure 10 includes a pump head fixing member 100, a pump head 200 and a locking assembly 300. The pump head fixing member 100 is arranged at the top of the pump machine 50. The pump head 200 is detachably mounted on the pump head fixing member 100, and the position of the pump head 200 facing the pump head fixing member 100 has a locking portion 220 and a guide slope 210, and the guide slope 210 is used to guide the pump head 200 to rotate relative to the pump head fixing member 100, so that the pump head 200 gradually moves away from the pump head fixing member 100 through the guide slope 210 when rotating and disassembling. The locking assembly 300 is movably arranged on the pump head fixing member 100, and the locking assembly 300 is used to cooperate with the locking portion 220 to lock or unlock the pump head 200 to the pump head fixing member 100.

[0041] Figure 4 for Figure 3 The schematic diagram of the pump head 200 entering the pump head fixing member 100 in the pump connection structure 10 shown in FIG. Figure 5 for Figure 4 The pump connection structure 10 is a schematic diagram showing that the pump head 200 and the pump head fixing member 100 are in a locked state. Figure 6 for Figure 4 The pump head 200 and the pump head fixing member 100 in the pump connection structure 10 are in an unlocked state. Figure 1 The pump head fixing member 100 is fixedly arranged on the top of the pump machine 50, with the direction shown as a reference. Moreover, the pump head fixing member 100 is arranged in an annular shape, and is used to install the pump head 200, so that the pump head 200 is connected to the output end of the pump machine 50, so that the pump machine 50 can drive the impeller in the pump head 200 to rotate, provide power for the flow of blood entering from the pump head 200, and make the blood flow out from the outlet of the pump head 200.

[0042] It is understandable that the pump head 200 is a disposable consumable. For this reason, the present application detachably mounts the pump head 200 to the top of the pump machine 50 through the cooperation of the pump head fixing part 100 and the locking assembly 300 to ensure that the pump head 200 is reliably fixed, thereby ensuring the reliability of the operation of the medical pump. Moreover, when the medical pump is finished working, the pump head 200 can be removed from the pump head fixing part 100. The locking assembly 300 is movably arranged in the pump head fixing part 100, and the locking assembly 300 can lock or unlock the pump head 200 to the pump head fixing part 100.

[0043] Specifically, the pump head 200 has a locking portion 220, and the locking portion 220 is located at the edge of the lower surface of the pump head 200. The end of the locking assembly 300 can be moved into or out of the locking portion 220, thereby achieving the locking or unlocking of the pump head 200. After the end of the locking assembly 300 moves into the locking portion 220, the locking assembly 300 can lock the pump head 200 to the pump head fixing member 100, and the pump head 200 and the pump head fixing member 100 are in a locked state. The locking assembly 300 is operated to make the end of the locking assembly 300 move out of the locking portion 220, and the locking assembly 300 unlocks the pump head 200 from the pump head fixing member 100, and at this time, the pump head 200 and the pump head fixing member 100 are in an unlocked state.

[0044] During installation, place one end of the pump head 200 in the pump head fixing member 100. Figure 4 As shown, the pump head 200 is rotated so that the locking assembly 300 locks the pump head 200 and the pump head fixing member 100, as shown in FIG. Figure 5 As shown in FIG. 1 , the pump head 200 and the pump head fixing member 100 are in a locked state. At this time, the pump head 200 is docked with the output end of the pump machine 50, and the output end of the pump machine 50 can drive the impeller in the pump head 200 to rotate. After the medical pump is used, the locking assembly 300 is operated to unlock the pump head 200 and the pump head fixing member 100, as shown in FIG. Figure 6 As shown, the pump head 200 is then rotated in the reverse direction and then disassembled.

[0045] It is understandable that the pump head is magnetically driven, and there is magnetic attraction between the pump head and the pump machine. Therefore, when the magnetic force is relatively large. When the medical pump needs to be disassembled after use, it is difficult to directly pull out the pump head due to the existence of magnetic force, which is inconvenient for disassembly of the pump head. For this reason, the present application provides a guide bevel 210 on the pump head 200, and the guide bevel 210 is provided at the edge position of the lower surface of the pump head 200, and the guide bevel 210 can guide the rotation of the pump head 200 relative to the fixing member.

[0046] Figure 3 The direction of the pump connection structure 10 after explosion is shown in Figure 1 The pump connection structure 10 shown is reversed. Figure 3It can be seen that the guide bevel 210 extends and tilts in the direction of the pump head fixture 100. When the pump head 200 is unlocked and the pump head 200 is rotated to be disassembled, the guide bevel 210 of the pump head 200 contacts the pump head fixture 100. When the pump head 200 continues to be rotated, the pump head 200 will gradually move away from the pump head fixture 100 due to the lifting effect of the guide bevel 210. In other words, when the pump head 200 is rotated, the pump head 200 gradually rises along the pump head fixture 100 through the guide bevel 210. The setting of the guide bevel 210 gradually weakens the magnetic attraction in the vertical direction during the process of the rotating pump head 200 rising, making it easier to remove the pump head 200.

[0047] In the pump connection structure 10 of the above embodiment, a guide slope 210 is provided on the pump head 200, and the pump head 200 is guided to be disassembled from the pump head fixing member 100 by the guide slope 210. In this way, after the locking assembly 300 unlocks the locking portion 220, the pump head 200 is rotated so that the pump head 200 slides along the pump head fixing member 100 through the guide slope 210. Moreover, due to the effect of the guide slope 210, the pump head 200 will gradually move away from the pump head fixing member 100 during the rotation process, thereby increasing the axial distance between the pump head 200 and the pump head fixing member 100. In this way, the vertical magnetic attraction of the pump machine 50 on the pump head 200 can be weakened, thereby reducing the magnetic attraction of the pump head 200 when it is pulled out, making it easier to remove the pump head 200 and facilitating the disassembly of the pump head 200.

[0048] See also Figure 3 In one embodiment, the guide slope 210 has a first end 211 and a second end 212 that are relatively arranged. The first end 211 is smoothly connected to the surface of the pump head 200 or protrudes from the surface of the pump head 200, and the second end 212 extends toward the pump head fixing member 100. The guide slope 210 is obliquely connected to the first end 211 and the second end 212, and the height of the second end 212 is higher than the height of the first end 211.

[0049] by Figure 3 Taking the direction shown as a reference, from the outside to the inside of the paper, the right side of the guide slope 210 is the first end 211, and the left side is the second end 212. The first end 211 of the guide slope 210 is smoothly connected to the surface of the pump head 200 facing the pump head fixing member 100 or protrudes from the surface of the pump head 200, and the second end 212 of the guide slope 210 protrudes from the surface of the pump head 200 facing the pump head fixing member 100. The guide slope 210 rotates and tilts to connect the first end 211 and the second end 212. In this way, when the pump head 200 is rotated and disassembled, the pump head 200 first contacts the pump head fixing member 100 through the first end 211, and then contacts the pump head fixing member 100 through the guide slope 210. Since the guide slope 210 spirally rises, the pump head 200 will gradually move away from the pump head fixing member 100 when it continues to rotate.

[0050] See also Figure 3 In one embodiment, the locking portion 220 is disposed at the second end 212. That is, the locking portion 220 is disposed at the end of the guide slope 210 away from the pump head 200, so that the locking assembly 300 can be easily matched with the locking portion 220. Of course, in other embodiments of the present application, the locking portion 220 can also be directly disposed at other edge positions of the pump head 200.

[0051] See also Figure 3 In one embodiment, there are multiple guiding slopes 210, and the multiple guiding slopes 210 are arranged at intervals along the circumferential direction on the pump head 200. In this way, the multiple guiding slopes 210 can guide the pump head 200 in the circumferential direction, so that the pump head 200 can be away from the pump head fixing member 100 when rotating and disassembling, making it easier to remove the pump head 200.

[0052] Optionally, multiple guide bevels 210 are evenly arranged. That is to say, multiple guide bevels 210 are evenly distributed in the circumferential direction of the pump head 200, so that when the pump head 200 is rotated and disassembled relative to the pump head fixing member 100, multiple guide bevels 210 can evenly support the pump head 200, so that the distance between the pump head 200 and the pump head fixing member 100 is basically the same, so as to weaken the vertical magnetic attraction of the pump machine 50 on the pump head 200, thereby reducing the magnetic attraction of the pump head 200 when it is pulled out, making it easier to remove the pump head 200 and convenient to disassemble the pump head 200.

[0053] See also Figure 3 Optionally, each guide bevel 210 corresponds to a locking portion 220. That is to say, the number of guide bevels 210 is equal to the number of locking portions 220, and the locking portions 220 are arranged on the corresponding guide bevels 210. It can be understood that the pump connection structure 10 has a locking assembly 300 and a plurality of locking positions, and the plurality of locking positions are arranged on the pump head fixing member 100, and the locking assembly 300 and the plurality of locking positions are arranged corresponding to the plurality of locking portions 220, respectively. After the pump head 200 is installed on the pump head fixing member 100, one of the locking portions 220 is locked and matched with the locking assembly 300, and the remaining locking portions 220 are clamped in the corresponding locking positions, so that the pump head 200 is reliably locked and axial movement of a certain part of the pump head 200 is avoided.

[0054] In one embodiment, the pump head 200 further includes a guide plate 230, which is disposed on the surface of the pump head 200 facing the pump head fixing member 100, and the guide slope 210 is disposed on the guide plate. The guide plate 230 is disposed at the edge of the surface of the pump head 200 facing the pump head fixing member 100, the guide plate 230 is protruding in the axial direction, and the guide slope 210 is disposed at the edge of the guide plate 230 away from the pump head 200. That is, the present application forms the guide slope 210 on the guide plate 230.

[0055] See also Figure 3 In one embodiment, the pump head fixing member 100 has a recessed portion 110, which is recessed relative to the surface of the pump head fixing member 100, and is used to accommodate the guide slope 210 of the pump head 200. In this way, when the pump head 200 is rotated and disassembled relative to the pump head fixing member 100, the guide slope 210 can abut against the side of the recessed portion 110 and move along the side of the recessed portion 110, so that the pump head 200 gradually moves away from the pump head fixing member 100.

[0056] Optionally, the side of the recessed portion 110 is a vertical surface. In this way, the guide bevel 210 can abut against the vertical surface and slide along the vertical surface. Of course, in other embodiments of the present application, the side of the recessed portion 110 can also be an inclined surface. In this way, the guide bevel 210 can contact the inclined surface and slide along the inclined surface. In other words, the pump head fixing member 100 has an inclined matching bevel, which is arranged corresponding to the guide bevel 210 and is matched with the guide bevel 210, so that the pump head 200 gradually moves away from the pump head fixing member 100, which is convenient for the removal of the pump head 200. It is worth noting that the inclination angle of the inclined surface is not limited in principle, as long as the inclination of the inclined surface can cooperate with the guide bevel 210, so that the guide bevel 210 can move along the inclined surface.

[0057] See also Figures 1 to 3 In one embodiment, the locking assembly 300 includes a locking member 310 and an unlocking member 320, which are movably arranged on the pump head fixing member 100. One end of the locking member 310 is used to lock with the locking portion 220 so that the pump head 200 and the pump head fixing member 100 are in a locked state. The unlocking member 320 cooperates with the locking member 310 to drive the locking member 310 to rotate, so that the locking member 310 is disengaged from the locking portion 220, thereby putting the pump head 200 and the pump head fixing member 100 in an unlocked state.

[0058] The locking member 310 is a component that cooperates with the locking portion 220 to lock and unlock, and the locking member 310 is movably disposed on the pump head fixing member 100. One end of the locking member 310 can be locked with the locking portion 220 to lock the pump head 200 and the pump head fixing member 100. Figure 5 As shown; one end of the locking member 310 can also be separated from the locking portion 220 to put the pump head 200 and the pump head fixing member 100 in an unlocked state. The unlocking member 320 is a control component for unlocking the locking member 310. The unlocking member 320 is movably arranged on the pump head fixing member 100. The unlocking member 320 can be held against the locking member 310, so that the locking member 310 rotates and releases the lock on the locking portion 220, thereby changing the pump head 200 and the pump head fixing member 100 from the locked state to the unlocked state. Even if the pump head 200 and the pump head fixing member 100 are locked, the pump head 200 and the pump head fixing member 100 are locked. Figure 5 The lock status shown changes to Figure 6 Unlocked state shown.

[0059] Specifically, after the pump head 200 is mounted on the pump head fixing member 100, as shown in FIG. Figure 4 As shown, the pump head 200 is rotated, and the locking portion 220 abuts against one end of the locking member 310. At this time, the locking member 310 cannot lock the pump head 200. When the pump head 200 is further rotated, the locking portion 220 applies a force to the lock buckle 311 (mentioned later) from the outside, so that the locking portion 310 rotates, and the lock buckle 311 is pushed to the outside to make way for the locking portion 220. After the pump head 200 continues to rotate to the right position, one end of the locking member 310 (i.e., the lock buckle 311 mentioned later) is clamped with the locking portion 220, so that the locking member 310 is locked with the locking portion 220. At this time, the pump head 200 and the pump head fixing member 100 are in a locked state, as shown in FIG. Figure 5 When the medical pump is finished working, the unlocking member 320 is operated, for example, along Figure 5 As shown in the figure, the unlocking member 320 drives the locking member 310 to rotate so that the lock buckle 311 deviates outward and disengages from the locking portion 220, so that the locking member 310 unlocks the locking portion 220. At this time, the pump head 200 and the pump head fixing member 100 are in an unlocked state, as shown in the figure. Figure 6 The locking assembly 300 has a simple structure, and through cooperation with the locking portion 220, the pump head 200 and the pump head fixing member 100 can be installed, locked and unlocked quickly and conveniently, saving user time and facilitating operation.

[0060] See also Figures 3 to 6 In one embodiment, the locking member 310 includes a lock buckle 311 and a supporting portion 312 located at both ends of the locking member 310, the lock buckle 311 is used to cooperate with the locking portion 220, and the supporting portion 312 is arranged on the movement path of the unlocking member 320, and the unlocking member 320 is used to resist the supporting portion 312 to rotate the locking member 310, so as to drive the lock buckle 311 to move and release the lock of the locking portion 220.

[0061] by Figures 3 to 6 The direction shown is taken as a reference, the end of the left side of the locking member 310 is the lock buckle 311, and the end of the right side of the locking member 310 is the abutting portion 312. The lock buckle 311 can cooperate with the locking portion 220 to achieve locking and unlocking, and the abutting portion 312 can abut against the unlocking member 320. When the lock buckle 311 is locked with the locking portion 220, the pump head 200 and the pump head fixing member 100 can be in a locked state. The abutting portion 312 is arranged on the movement path of the unlocking member 320. After the unlocking member 320 is operated, the unlocking member 320 can touch the abutting portion 312. After the abutting portion 312 is touched, the locking member 310 can be driven to rotate clockwise through the abutting portion 312, and then the locking member 310 can drive the lock buckle 311 to move outward to release the locking of the locking portion 220.

[0062] The locking member 310 has a simple structure and an ingenious design. The unlocking member 320 abuts against the abutting portion 312, which can drive the locking member 310 to rotate as a whole, so that the lock buckle 311 at the end of the locking member 310 moves to release the lock on the locking portion 220, thereby changing the pump head 200 and the pump head fixing member 100 from the locked state to the unlocked state. At this time, the pump head 200 can be rotated to be taken out of the pump head fixing member 100.

[0063] See also Figures 3 to 6 In one embodiment, the locking member 310 includes a rotating arm 313, the supporting portion 312 and the locking buckle 311 are respectively connected to the rotating arm 313, and the locking member 310 rotates around the rotating arm 313 to switch the pump head 200 and the pump head fixing member 100 between a locked state and an unlocked state.

[0064] The middle area of ​​the rotating arm 313 can be rotatably arranged on the pump head fixing member 100, the left end of the rotating arm 313 is the lock buckle 311, and the right end of the rotating arm 313 is the abutment portion 312. In this way, the rotating arm 313 forms a structure similar to a lever. The locking member 310 rotates along a first direction with the rotating arm 313 as the center, so that the pump head 200 and the pump head fixing member 100 are switched between a locked state and an unlocked state. The first direction is a clockwise direction or a counterclockwise direction, that is, the locking member 310 can rotate clockwise or counterclockwise.

[0065] Specifically, when the locking portion 220 abuts against the lock buckle 311 to move the lock buckle 311 outward, the rotating arm 313 drives the abutting portion 312 to move in a direction away from the unlocking member 320; when the lock buckle 311 is locked in the locking portion 220, the rotating arm 313 rotates and drives the abutting portion 312 to move in the direction of the unlocking member 320. When the unlocking member 320 is operated, the unlocking member 320 presses against the abutting portion 312, so that the abutting portion 312 drives the lock buckle 311 to move outward through the rotation of the rotating arm 313, so that the lock buckle 311 is separated from the locking portion 220.

[0066] Optionally, the locking portion 220 is a locking protrusion or a locking groove. Figures 3 to 6 As shown, the locking portion 220 is a locking protrusion, and the locking buckle 311 can be clamped on the locking protrusion to achieve the locking of the pump head 200 to the pump head fixing member 100. Of course, in other embodiments of the present application, the locking portion 220 can also be a locking groove, and the locking buckle 311 is clamped in the locking groove to achieve the locking of the pump head 200 to the pump head fixing member 100. In the following text, only the locking portion 220 is an example of a locking protrusion for explanation. The principle of the locking portion 220 being a locking groove is substantially the same as the principle of the locking portion 220 being a locking protrusion, and will not be repeated in the following text.

[0067] Optionally, the lock buckle 311 is hook-shaped. The hook-shaped lock buckle 311 can be hooked on the locking portion 220. Optionally, the end of the lock buckle 311 has a guide surface 3111, and the guide surface 3111 can guide the lock buckle 311 to slide along the locking portion 220 and pass over the locking portion 220 to be hooked on the locking portion 220. Figures 3 to 5 As shown, when the pump head 200 is just placed in the pump head fixing member 100, the end of the lock buckle 311 abuts against the locking portion 220. When the pump head 200 is rotated, the guide surface 3111 moves along the locking portion 220, so that the lock buckle 311 moves outward. When the pump head 200 continues to rotate, the lock buckle 311 gradually passes over the locking portion 220. When the pump head 200 moves into place, the lock buckle 311 is hooked on the locking portion 220 to achieve locking. Optionally, the guide surface 3111 is an inclined surface or an arc surface.

[0068] See also Figures 3 to 6 In one embodiment, the locking assembly 300 further includes a first elastic member 330, one end of which is connected to the locking member 310, and the other end is fixed to the pump head fixing member 100, and the first elastic member 330 is used to reset the locking member 310. After the elastic force of the first elastic member 330 resets the locking member 310, the lock buckle 311 can always remain hooked on the locking portion 220, ensuring that the locking member 310 is reliably locked.

[0069] One end of the first elastic member 330 is connected to the locking member 310, and the other end of the first elastic member 330 is connected to the pump head fixing member 100. The elastic force of the first elastic member 330 can make the locking member 310 move along the pump head fixing member 100. Figures 3 to 6 The locking member 310 is rotated in the counterclockwise direction as shown, so that the locking member 310 is locked in the locking portion 220. After the unlocking member 320 is operated, the unlocking member 320 can apply a force to the abutting portion 312, so that the abutting portion 312 overcomes the elastic force of the first elastic member 330 and rotates in the clockwise direction, and then the locking member 310 rotates in the clockwise direction to release the locking of the locking portion 220. After the unlocking member 320 is released, the locking member 310 can rotate in the counterclockwise direction under the action of the first elastic member 330 and return to the initial state (i.e., the state of locking the locking portion 220). When the locking member 310 is in the initial state, the abutting portion 312 is on the movement path of the unlocking member 320.

[0070] Optionally, the first elastic member 330 is a torsion spring, which is sleeved on the rotating shaft at the center of the rotating arm 313 , and one arm of the torsion spring is connected to the rotating arm 313 , while the other arm of the torsion spring is connected to the pump head fixing member 100 .

[0071] See also Figures 3 to 6In one embodiment, the locking assembly 300 further includes a second elastic member 340, one end of the second elastic member 340 is connected to the unlocking member 320, and the other end is fixed to the pump head fixing member 100, and the second elastic member 340 is used to make the unlocking member 320 reciprocate. After the unlocking member 320 abuts against the locking member 310 to rotate the locking member 310, the unlocking member 320 can return to the original position of the unlocking member 320 under the action of the first elastic member 330.

[0072] When the unlocking member 320 is operated, the unlocking member 320 can overcome the elastic force of the second elastic member 340 to move, thereby pressing the abutting portion 312, so that the abutting portion 312 drives the locking member 310 to rotate. After the unlocking member 320 is released, the elastic force of the second elastic member 340 can drive the unlocking member 320 to reset. Optionally, the unlocking member 320 is a tension spring.

[0073] See also Figures 3 to 6 In one embodiment, the unlocking member 320 includes a sliding portion 321 and a toggle portion 322, the sliding portion 321 is connected to the second elastic member 340, the toggle portion 322 is connected to the sliding portion 321, and the toggle portion 322 protrudes from the outer wall of the pump head fixing member 100; the pump head fixing member 100 is provided with a sliding track, the sliding portion 321 can be slidably arranged on the sliding track, and the supporting portion 312 is arranged on the sliding track.

[0074] The sliding track is the movement path of the unlocking member 320. When the locking member 310 is in the initial state, the abutting portion 312 is on the sliding track. The toggle portion 322 is operated to drive the sliding member 321 to slide on the sliding track. When the sliding member 321 reaches the position where the abutting portion 312 is located, the sliding member 321 abuts against the abutting portion 312 and moves inward, so that the locking member 310 as a whole rotates clockwise to drive the lock buckle 311 to move and release the locking of the locking portion 220, so that the pump head 200 and the pump head fixing member 100 change from the locked state to the unlocked state. One end of the sliding member 321 is connected to the second elastic member 340, so that under the action of the second elastic member 340, the sliding member 321 and the toggle portion 322 can return to the original position where the unlocking member 320 is located.

[0075] See also Figures 1 to 6 When installing the pump head 200, place the pump head 200 into the pump head fixing member 100, such as Figure 4 First, the pump head 200 is rotated, and the locking part 220 can push the locking member 310 to rotate. When the pump head 200 is rotated to the right position, the elastic force of the first elastic member 330 causes the locking member 310 to reset, and then the lock buckle 311 can be locked in the locking part 220. At this time, the pump head 200 and the pump head fixing member 100 are in a locked state, as shown in FIG. Figure 5When unlocking, the unlocking member 320 is operated, and the unlocking member 320 presses the abutting portion 312, so that the locking member 310 rotates, so that the lock buckle 311 is separated from the locking portion 220. At this time, the pump head 200 and the pump head fixing member 100 are in an unlocked state, as shown in FIG. Figure 6 As shown. Subsequently, the pump head 200 can be rotated and taken out. When the pump head 200 is rotated, the pump head 200 slides upward along the pump head fixing member 100 through the guide slope 210, so that the pump head 200 gradually moves away from the pump head fixing member 100.

[0076] See also Figures 1 to 6 The pump connection structure 10 of the present application is provided with a guide bevel 210 on the pump head 200, and the pump head 200 is guided to be disassembled from the pump head fixing member 100 by the guide bevel 210. In this way, after the locking assembly 300 unlocks the locking portion 220, the pump head 200 is rotated so that the pump head 200 slides along the pump head fixing member 100 through the guide bevel 210. Moreover, due to the effect of the guide bevel 210, the pump head 200 will gradually move away from the pump head fixing member 100 during the rotation process, thereby increasing the axial distance between the pump head 200 and the pump head fixing member 100. In this way, the vertical magnetic attraction of the pump machine 50 on the pump head 200 can be weakened, thereby reducing the magnetic attraction of the pump head 200 when it is pulled out, making it easier to remove the pump head 200 and facilitating the disassembly of the pump head 200.

[0077] See also Figure 1 and Figure 2 The present application also provides a medical pump, including a pump machine 50 and a pump connection structure 10 as in any of the above embodiments, wherein the pump connection structure 10 includes a pump head 200, a pump head fixing member 100 and a locking assembly 300, wherein the pump head fixing member 100 is fixedly disposed on the top of the pump machine 50, and the pump head 200 is detachably mounted on the pump head fixing member 100 through the locking assembly 300. After the medical pump of the present application adopts the pump connection structure 10 of the above embodiment, the vertical magnetic attraction of the pump machine 50 on the pump head 200 is weakened, thereby reducing the magnetic attraction of the pump head 200 when it is pulled out, making it easier and more convenient to remove the pump head 200, and facilitating the disassembly of the pump head 200 for easy use.

[0078] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A pump connection structure, characterized in that: include: A pump head fixing part is arranged on the top of the pump machine; A pump head is detachably mounted on the pump head fixing member, wherein the pump head has a locking portion and a guide slope at a position facing the pump head fixing member, wherein the guide slope is used to guide the pump head to rotate relative to the pump head fixing member, so that the pump head gradually moves away from the pump head fixing member through the guide slope when rotating and disassembling; as well as A locking assembly is movably arranged on the pump head fixing piece, and the locking assembly is used to cooperate with the locking portion to lock or unlock the pump head on the pump head fixing piece.

2. The pump connection structure according to claim 1, characterized in that: The guide bevel has a first end and a second end that are arranged opposite to each other. The first end is smoothly connected to the surface of the pump head or protrudes from the surface of the pump head, and the second end extends toward the pump head fixing member. The guide bevel obliquely connects the first end and the second end, and the height of the second end is higher than the height of the first end.

3. The pump connection structure according to claim 2, characterized in that: The locking portion is disposed at the second end.

4. The pump connection structure according to claim 1, characterized in that: There are multiple guide slopes, and the multiple guide slopes are arranged on the pump head at intervals along the circumferential direction.

5. The pump connection structure according to claim 1, characterized in that: The pump head further comprises a guide plate, wherein the guide plate is arranged on a surface of the pump head facing the pump head fixing member, and the guide slope is arranged on the guide plate.

6. The pump connection structure according to claim 1, characterized in that: The pump head fixing piece has a recessed portion, which is recessed relative to the surface of the pump head fixing piece and is used to accommodate the guiding inclined surface.

7. The pump connection structure according to claim 6, characterized in that: The side surface of the recessed portion is a vertical surface or an inclined surface, and the side surface of the recessed portion can abut against the guiding inclined surface.

8. The pump connection structure according to any one of claims 1 to 7, characterized in that: The locking assembly includes a locking member and an unlocking member, and the locking member and the unlocking member are movably arranged on the pump head fixing member. One end of the locking member is used to lock with the locking portion so that the pump head and the pump head fixing member are in a locked state. The unlocking member cooperates with the locking member to drive the locking member to rotate, so that the locking member is disengaged from the locking portion, thereby putting the pump head and the pump head fixing member in an unlocked state.

9. The pump connection structure according to claim 8, characterized in that: The locking member includes a lock buckle and a supporting portion located at both ends of the locking member, the lock buckle is used to cooperate with the locking portion, the supporting portion is arranged on the movement path of the unlocking member, and the unlocking member is used to support the supporting portion to rotate the locking member to drive the lock buckle to move and release the lock on the locking portion.

10. The pump connection structure according to claim 9, characterized in that: The locking member includes a rotating arm, the abutting portion and the locking buckle are respectively connected to the rotating arm, and the locking member rotates around the rotating arm to switch the pump head and the pump head fixing member between the locked state and the unlocked state.

11. The pump connection structure according to claim 8, characterized in that: The locking assembly further comprises a first elastic member, one end of which is connected to the locking member, and the other end of which is fixed to the pump head fixing member, and the first elastic member is used to reset the locking member.

12. The pump connection structure according to claim 9, characterized in that: The locking assembly also includes a second elastic member, one end of which is connected to the unlocking member, and the other end of which is fixed to the pump head fixing member, and the second elastic member is used to enable the unlocking member to achieve reciprocating motion.

13. The pump connection structure according to claim 12, characterized in that: The unlocking member includes a sliding portion and a toggle portion, the sliding portion is connected to the second elastic member, the toggle portion is connected to the sliding portion, and the toggle portion protrudes from the outer wall of the pump head fixing member; The pump head fixing member is provided with a sliding track, the sliding portion is slidably arranged on the sliding track, and the abutting portion is arranged on the sliding track.

14. A medical pump, characterized in that: It comprises a pump machine and a pump connection structure as described in any one of claims 1 to 13, wherein the pump connection structure comprises a pump head, a pump head fixing part and a locking assembly, wherein the pump head fixing part is fixedly arranged on the top of the pump machine, and the pump head is detachably mounted on the pump head fixing part through the locking assembly.

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