Continuous quantitative gavage device

Abstract

The continuous quantitative gavage device comprises a base, a supporting part, an empty cylinder, a capillary tube, a piston rod, an intermittent transmission assembly and a rotating shaft, and the base is provided with a first base face and a second base face which are oppositely arranged in the height direction of the base; the supporting part is fixed on one side of the first seat surface; the empty cylinder is arranged on one side of the supporting part; one end of the capillary tube is connected with one end of the empty cylinder; the piston rod extends in the first direction and is located in the empty cylinder, the end, away from the base, of the piston rod extends out of the empty cylinder, and the piston rod has the freedom degree of moving in the first direction. The intermittent transmission assembly is arranged on the side, facing the empty cylinder, of the supporting part and connected with the piston rod. The axial direction of the rotating shaft is the same as the second direction, the rotating shaft penetrates through the supporting part and has the freedom degree of rotating around the axial direction of the rotating shaft, and the rotating shaft is connected with the intermittent transmission assembly and provides driving force for the intermittent transmission assembly. The medicine extruding device can continuously and quantitatively extrude medicines, and is more convenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of gastric gavage devices, and in particular to a continuous quantitative gastric gavage device. Background Art

[0002] In order to observe the changes caused by drugs on body functions, metabolism and morphology, it is often necessary to first use animals as receptors, inject drugs into the animals, and observe the animals' reactions to the drugs. This is what we commonly call animal experiments. Generally, it is also necessary to determine the route and method of animal administration based on the purpose of the experiment, drug dosage form, animal species, etc. The administration methods in animal experiments generally include injection and oral administration.

[0003] In the oral administration method, the needle part of the gavage device is inserted into the esophagus through the mouse's mouth, and then the drug is injected. However, the amount of drug injected each time is difficult to control accurately. When multiple mice need to be injected, the existing gavage device is difficult to perform continuous quantitative injection, which is inconvenient to use. Utility Model Content

[0004] The main purpose of the present application is to provide a continuous quantitative intragastric administration device, aiming to solve the problem that the existing intragastric administration device is difficult to perform continuous quantitative injection and is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the present application provides a continuous quantitative gavage device, including a base, a support part, an empty cylinder, a capillary, a piston rod, an intermittent transmission assembly and a rotating shaft, wherein the base has a first seat surface and a second seat surface arranged opposite to each other in its own height direction; the support part is fixed to a side of the first seat surface away from the second seat surface; the empty cylinder is arranged on one side of the support part, the axial direction of the empty cylinder is the same as the first direction, and the first direction intersects with the plane where the first seat surface is located; one end of the capillary tube is connected to an end of the empty cylinder close to the base, and the capillary tube is connected to the inside of the empty cylinder; the piston rod extends along the first direction, and the piston rod Located in the empty cylinder, the piston rod extends out of the empty cylinder at one end away from the base, and the piston rod has the freedom to move along the first direction; the intermittent transmission assembly is arranged on the side of the support part facing the empty cylinder, the intermittent transmission assembly is connected to the piston rod, and the intermittent transmission assembly drives the piston rod to move intermittently along the first direction in response to the driving force; the axial direction of the rotating shaft is the same as the second direction, the rotating shaft passes through the supporting part, the rotating shaft has the freedom to rotate around its own axial direction, the rotating shaft is connected to the intermittent transmission assembly, the rotating shaft provides driving force for the intermittent transmission assembly, the second direction is perpendicular to the plane where the supporting part is located, and the second direction intersects with the first direction.

[0006] Optionally, the gastric gavage device further comprises a sealing cover, which is arranged at one end of the empty cylinder away from the base, and the piston rod passes through the sealing cover and is spline-connected to the sealing cover.

[0007] Optionally, a first slide groove is provided on the side of the support part facing the empty cylinder; the intermittent transmission assembly includes a first slider, a rack and an incomplete gear, wherein the first slider is slidably matched with the first slide groove, the first slider has the freedom to slide along the first direction, and the first slider is interference fit with the first slide groove; the rack is provided on the side of the support part facing the empty cylinder, the rack is fixedly connected to the first slider, the rack extends along the first direction, and the end of the rack close to the base is connected to the piston rod; the incomplete gear is sleeved on the outer periphery of the rotating shaft, the rotating shaft drives the incomplete gear to rotate one circle, and the incomplete gear and the rack switch twice between meshing and non-meshing states.

[0008] Optionally, the continuous quantitative gavage device also includes a connecting rod and a handle, wherein the connecting rod is arranged on a side of the support portion away from the empty cylinder, one end of the connecting rod is fixedly connected to the rotating shaft, and the connecting rod extends radially along the rotating shaft; the handle is rotatably connected to one end of the connecting rod away from the rotating shaft, and the handle extends along the second direction.

[0009] Optionally, a fixing component is provided on the side of the support portion facing the empty cylinder, and the fixing component is detachably connected to the empty cylinder; the piston rod comprises a first structural portion, a second structural portion, a push rod and a piston portion, wherein the first structural portion is connected to an end of the rack close to the base; the second structural portion is rotatably connected to a side of the first structural portion away from the rack, and the second structural portion has the freedom to rotate around a first direction; the push rod is threadedly connected to a side of the second structural portion away from the first structural portion, one end of the push rod is located outside the empty cylinder, and the other end is located inside the empty cylinder; the piston portion is fixed to an end of the push rod away from the second structural portion, and the outer periphery of the piston portion fits with the inner periphery of the empty cylinder.

[0010] Optionally, a second slide groove is provided on the side of the support part facing the empty cylinder; the fixing assembly includes two second sliders, two springs and a clamping plate, wherein the two second sliders are slidably matched with the second slide groove, and the second slider has the freedom to slide along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively; the two springs are both provided in the second slide groove, and the springs extend along the third direction, and the two springs are respectively located on the side where the two second sliders are away from each other, and the two ends of the springs are respectively connected to the support part and a second slider, and the spring is in a compressed state; the clamping plate corresponds to the second slider one by one, and the clamping plate is provided on the side of the support part facing the empty cylinder, and the clamping plate is fixedly connected to the corresponding second slider, and the empty cylinder is located between the two clamping plates.

[0011] Optionally, a groove is provided at one end of the push rod facing the second structural part, and an internal thread is provided on the inner periphery of the groove; the piston rod also includes a protrusion, which is fixed to the side of the second structural part facing away from the first structural part, and an external thread is provided on the outer periphery of the protrusion. The protrusion is located in the groove and is threadedly connected to the second structural part.

[0012] Optionally, arc-shaped depressions are provided on the sides of the two clamping plates that are close to each other, and friction pads are fixed to the arc-shaped depressions, and the friction pads fit the outer circumference of the empty cylinder.

[0013] Optionally, the inner circumference of the empty cylinder is provided with an internal thread, the outer circumference of the cover is provided with an external thread, and the cover is threadedly connected to the empty cylinder; wherein the internal thread provided in the groove has an opposite rotation direction to the internal thread provided in the empty cylinder.

[0014] Optionally, a liquid filling port and an exhaust port are provided on the outer circumference of the empty cylinder, the minimum distance between the liquid filling port and the plane where the first seat surface is located is a, the minimum distance between the exhaust port and the plane where the first seat surface is located is b, and a <b。

[0015] A continuous quantitative gavage device proposed in an embodiment of the present application is characterized in that before operation, a medicine to be injected is added into an empty cylinder, a mouse is fixed on a side of a first seat surface facing away from a second seat surface, and a capillary is inserted into the esophagus from the mouth of the mouse; the rotating shaft is rotated, and the rotating shaft drives an intermittent transmission component to drive a piston rod to move intermittently in a first direction, and the piston rod moves once close to the base to push the medicine in the empty cylinder to extrude a fixed amount, and the extruded medicine enters the esophagus of the mouse through the capillary; during the process, it is only necessary to control the rotation of the rotating shaft to control the intermittent movement of the piston rod, and the amount of medicine extruded each time the piston rod moves is the same, so the medicine can be continuously and quantitatively extruded, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of the continuous quantitative intragastric gavage device provided in an embodiment of the present application;

[0017] Figure 2 for Figure 1 A structural schematic diagram of another perspective of the embodiment;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the fixed component of the embodiment;

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the hollow cylinder in the embodiment;

[0020] Figure 5 for Figure 4 Schematic diagram of the structural disassembly of the embodiment in FIG.

[0021] In the figure: 1. base; 2. support part; 21. first slide groove; 22. second slide groove; 3. empty cylinder; 31. sealing cover; 32. liquid filling port; 33. exhaust port; 4. capillary; 5. piston rod; 51. first structural part; 52. second structural part; 53. push rod; 531. groove; 54. piston part; 55. protrusion; 6. intermittent transmission assembly; 61. first slider; 62. rack; 63. incomplete gear; 7. rotating shaft; 81. connecting rod; 82. handle; 9. fixing assembly; 91. second slider; 92. spring; 93. splint; 931. friction pad.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] refer to Figure 1 and Figure 5 It should be understood that Figure 5 The connections between the components should be like Figure 4As compact as in the example, this is just an example. Figure 5 The components are disassembled for easy understanding. The embodiment of the present application provides a continuous quantitative gavage device, which may include a base 1, a support portion 2, a hollow cylinder 3, a capillary tube 4, a piston rod 5, an intermittent transmission assembly 6 and a rotating shaft 7, wherein the base 1 has a first seat surface and a second seat surface arranged opposite to each other in its own height direction; the support portion 2 is fixed to a side of the first seat surface away from the second seat surface; the hollow cylinder 3 is arranged on one side of the support portion 2, the axial direction of the hollow cylinder 3 is the same as the first direction, and the first direction intersects with the plane where the first seat surface is located; one end of the capillary tube 4 is connected to an end of the hollow cylinder 3 close to the base 1, and the capillary tube 4 is connected to the inside of the hollow cylinder 3; the piston rod 5 extends along the first direction The piston rod 5 is located in the empty cylinder 3, and one end of the piston rod 5 away from the base 1 extends out of the empty cylinder 3, and the piston rod 5 has the freedom to move along the first direction; the intermittent transmission assembly 6 is arranged on the side of the support part 2 facing the empty cylinder 3, and the intermittent transmission assembly 6 is connected to the piston rod 5. The intermittent transmission assembly 6 drives the piston rod 5 to move intermittently along the first direction in response to the driving force; the axial direction of the rotating shaft 7 is the same as the second direction, and the rotating shaft 7 passes through the supporting part 2. The rotating shaft 7 has the freedom to rotate around its own axial direction, and the rotating shaft 7 is connected to the intermittent transmission assembly 6. The rotating shaft 7 provides driving force for the intermittent transmission assembly 6, and the second direction is perpendicular to the plane where the supporting part 2 is located, and the second direction intersects with the first direction.

[0028] A continuous quantitative gavage device proposed in an embodiment of the present application is characterized in that before operation, a medicine to be injected is added into an empty cylinder 3, a mouse is fixed on the side of the first seat surface facing away from the second seat surface, and then a capillary 4 is inserted into the esophagus from the mouse's mouth; the rotating shaft 7 is rotated, and the rotating shaft 7 drives the intermittent transmission component 6 to drive the piston rod 5 to move intermittently along the first direction, and the piston rod 5 moves once close to the base 1 to push the medicine in the empty cylinder 3 to extrude a fixed amount, and the extruded medicine enters the esophagus of the mouse through the capillary 4; during the process, it is only necessary to control the rotation of the rotating shaft 7 to control the intermittent movement of the piston rod 5, and the amount of medicine extruded each time the piston rod 5 moves is the same, so the medicine can be continuously and quantitatively extruded, which is more convenient to use.

[0029] Specifically, Figure 1 As shown, the first direction is the X direction, and the second direction is the Y direction. A support leg can be provided on the side of the first seat surface facing away from the second seat surface to support the base 1. The distance between the first seat surface and the second seat surface of the base 1 is the height of the base 1. At this time, the height direction of the base 1 is vertical, that is, the planes where the first seat surface and the second seat surface of the base 1 are located are both horizontal. The first direction X can be perpendicular to the plane where the first seat surface is located, that is, the first direction X can be the height direction of the base 1. At this time, the second direction Y is parallel to the plane where the first seat surface is located.

[0030] The empty cylinder 3 may be a syringe, and one end of the empty cylinder 3 close to the base 1 is an end of the syringe with a nipple, and the capillary tube 4 may be connected to the nipple to communicate with the interior of the empty cylinder 3 .

[0031] refer to Figure 4 and Figure 5 In an exemplary embodiment, the gastric gavage device may further include a sealing cover 31 , which is disposed at an end of the empty cylinder 3 away from the base 1 , and the piston rod 5 passes through the sealing cover 31 and is spline-connected to the sealing cover 31 .

[0032] Specifically, one end of the empty cylinder 3 close to the base 1 is connected to the capillary 4, and the end of the empty cylinder 3 away from the base 1 is provided with a cover 31, so that the empty cylinder 3 can be sealed to isolate the medicine inside the empty cylinder 3 and prevent the medicine from being contaminated by external impurities.

[0033] Furthermore, the cover 31 is spline-connected to the piston rod 5, so that the piston rod 5 can move along the first direction X relative to the cover 31, ensuring that the piston rod 5 will not be affected by the cover 31 when moving along the first direction X; at the same time, the piston rod 5 and the cover 31 cannot rotate relative to each other due to the existence of the spline.

[0034] refer to Figure 1 In an exemplary embodiment, a first slide groove 21 is provided on the side of the support part 2 facing the empty cylinder 3; the intermittent transmission assembly 6 may include a first slider 61, a rack 62 and an incomplete gear 63, wherein the first slider 61 is slidably matched with the first slide groove 21, the first slider 61 has the freedom to slide along the first direction X, and the first slider 61 is interference fit with the first slide groove 21; the rack 62 is provided on the side of the support part 2 facing the empty cylinder 3, the rack 62 is fixedly connected to the first slider 61, the rack 62 extends along the first direction X, and the end of the rack 62 close to the base 1 is connected to the piston rod 5; the incomplete gear 63 is sleeved on the outer periphery of the rotating shaft 7, the rotating shaft 7 drives the incomplete gear 63 to rotate one circle, and the incomplete gear 63 and the rack 62 switch twice between the meshing and non-meshing states.

[0035] Specifically, the incomplete gear 63 refers to a gear with incomplete peripheral teeth. The incomplete gear 63 can be understood as a disk with teeth on the periphery. The arc length of the portion of the disk with teeth on the periphery is smaller than the circumference of the disk. In the present application, the circular arc surface of the disk periphery of the incomplete gear 63 is divided into a first arc segment and a second arc segment. Teeth are arranged on the first arc segment. When the incomplete gear 63 is close to the rack 62 in the first arc segment, the incomplete gear 63 is not meshed with the rack 62. When the incomplete gear 63 is close to the rack 62 in the second arc segment, the incomplete gear 63 is meshed with the rack 62.

[0036] Furthermore, when the rotating shaft 7 rotates, it will drive the incomplete gear 63 to rotate around the axial direction of the rotating shaft 7. When the rotating shaft 7 rotates one circle, the incomplete gear 63 also rotates one circle. If the incomplete gear 63 is not meshed with the rack 62 in the initial state, the arc segment of the incomplete gear 63 close to the rack 62 is the second arc segment. After the incomplete gear 63 rotates one circle, it returns to the initial state. The incomplete gear 63 close to the rack 62 changes from the second arc segment to the first arc segment and then changes back to the second arc segment, that is, the state between the incomplete gear 63 and the rack 62 changes from non-meshing to meshing and then to non-meshing, thereby realizing intermittent transmission between the incomplete gear 63 and the rack 62.

[0037] Among them, if the incomplete gear 63 is initially meshed with the rack 62, then during the process of the incomplete gear 63 rotating one circle, the state between the incomplete gear 63 and the rack 62 changes from meshing to non-meshing and then to meshing again; during operation, the incomplete gear 63 is often used in an initial state where it is not meshed with the rack 62. In this way, after the rotating shaft 7 is rotated to complete one transmission between the incomplete gear 63 and the rack 62, the incomplete gear 63 and the rack 62 are not meshed, that is, the resistance to rotating the rotating shaft 7 at this time is greatly reduced compared to when the incomplete gear 63 is meshed with the rack 62, and the staff can clearly feel it, thereby stopping the rotation of the rotating shaft 7 to complete a quantitative injection, and even if the staff does not react in time to stop rotating the rotating shaft 7, it will not cause excessive injection.

[0038] Furthermore, the interference fit between the first slider 61 and the first slide groove 21 provides damping when the first slider 61 slides, that is, the first slider 61 will not move without applying additional driving force, ensuring that the first slider 61 will not move when the incomplete gear 63 is not engaged with the rack 62.

[0039] refer to Figure 2 In an exemplary embodiment, the continuous quantitative gavage device may further include a connecting rod 81 and a handle 82, wherein the connecting rod 81 is arranged on the side of the support portion 2 away from the empty cylinder 3, one end of the connecting rod 81 is fixedly connected to the rotating shaft 7, and the connecting rod 81 extends radially along the rotating shaft 7; the handle 82 is rotatably connected to the end of the connecting rod 81 away from the rotating shaft 7, and the handle 82 extends along the second direction Y.

[0040] Specifically, the staff can hold the handle 82 and rotate it around the axial direction of the rotating shaft 7 to drive the rotating shaft 7 to rotate, thereby intermittently driving the piston rod 5 to move intermittently, thereby performing quantitative injection.

[0041] Furthermore, the handle 82 is rotatably connected to the connecting rod 81, which makes it more convenient for the staff to hold the handle 82 and rotate it.

[0042] Furthermore, a counterweight may be provided at the center of the side of the second seat surface away from the first seat surface to make the gastric gavage device more stable and prevent the gastric gavage device from shaking as a whole when the handle 82 is rotated.

[0043] refer to Figure 2 , Figure 4 and Figure 5 In an exemplary embodiment, a fixing assembly 9 is provided on the side of the support portion 2 facing the empty cylinder 3, and the fixing assembly 9 is detachably connected to the empty cylinder 3; the piston rod 5 may include a first structural portion 51, a second structural portion 52, a push rod 53 and a piston portion 54, wherein the first structural portion 51 is connected to an end of the rack 62 close to the base 1; the second structural portion 52 is rotatably connected to a side of the first structural portion 51 away from the rack 62, and the second structural portion 52 has the freedom to rotate around the first direction X; the push rod 53 is threadedly connected to a side of the second structural portion 52 away from the first structural portion 51, one end of the push rod 53 is located outside the empty cylinder 3, and the other end is located inside the empty cylinder 3; the piston portion 54 is fixed to an end of the push rod 53 away from the second structural portion 52, and the outer periphery of the piston portion 54 is in contact with the inner periphery of the empty cylinder 3.

[0044] Specifically, the empty cylinder 3 is fixed by the fixing assembly 9, and the push rod 53 is spline-connected with the sealing cover 31, that is, the push rod 53 cannot rotate at this time. At this time, the second structural part 52 is rotated, and the first structural part 51 and the push rod 53 do not rotate, so the push rod 53 can be separated from the second structural part 52. At this time, the empty cylinder 3 is disassembled by the fixing assembly 9, and the empty cylinder 3, the components inside the empty cylinder 3, the push rod 53, the capillary 4, etc. can be separated from the rest of the gavage device, which is convenient for cleaning, disinfection and replacement of the disassembled components, and is more convenient to use.

[0045] refer to Figure 3 In an exemplary embodiment, a second slide groove 22 is provided on the side of the support portion 2 facing the empty cylinder 3; the fixing assembly 9 may include two second sliders 91, two springs 92 and a clamping plate 93, wherein the two second sliders 91 are both slidably matched with the second slide groove 22, and the second slider 91 has the freedom to slide along a third direction, and the third direction is respectively perpendicular to the first direction X and the second direction Y; the two springs 92 are both arranged in the second slide groove 22, and the springs 92 extend along the third direction, and the two springs 92 are respectively located on the side where the two second sliders 91 are away from each other, and the two ends of the spring 92 are respectively connected to the support portion 2 and a second slider 91, and the spring 92 is in a compressed state; the clamping plate 93 corresponds to the second slider 91 one by one, and the clamping plate 93 is arranged on the side of the support portion 2 facing the empty cylinder 3, and the clamping plate 93 is fixedly connected to the corresponding second slider 91, and the empty cylinder 3 is located between the two clamping plates 93.

[0046] Specifically, Figure 3As shown, the third direction is the Z direction. When working, the two springs 92 are in a compressed state, so that the two second sliders 91 tend to approach each other, and further the two clamping plates 93 tend to approach each other, and finally the empty tube 3 is clamped between the two clamping plates 93.

[0047] Furthermore, when disassembling the empty cylinder 3, it is only necessary to pull the two clamping plates 93 to move the two clamping plates 93 away from each other, and then the empty cylinder 3 can be disassembled.

[0048] refer to Figure 3 In the exemplary embodiment, arc-shaped depressions are provided on the sides of the two clamping plates 93 that are close to each other, and friction pads 931 are fixed to the arc-shaped depressions, and the friction pads 931 are in contact with the outer circumference of the empty cylinder 3.

[0049] Specifically, the two clamping plates 93 contact the empty cylinder 3 through the friction pad 931, which can effectively increase the friction between the clamping plates 93 and the outer periphery of the empty cylinder 3, thereby ensuring the stability of the empty cylinder 3 when working. The friction pad 931 on the arc-shaped depression fits with the outer periphery of the empty cylinder 3, which can further improve the stability of the empty cylinder 3 when working.

[0050] Furthermore, a resistance block can be provided on the outside of the empty cylinder 3, and the resistance block can correspond to the clamping plate 93 one by one. When the clamping plate 93 clamps the empty cylinder 3, the resistance block is located on the side of the corresponding clamping plate 93 away from the base 1. In this way, when the push rod 53 approaches the base 1 along the first direction X, the empty cylinder 3 is abutted against the side of the clamping plate 93 away from the base 1 through the resistance block, thereby effectively preventing the empty cylinder 3 from moving along the first direction X.

[0051] refer to Figure 5 In an exemplary embodiment, a groove 531 is provided at one end of the push rod 53 facing the second structural part 52, and an internal thread is provided on the inner circumference of the groove 531; the piston rod 5 may also include a protrusion 55, the protrusion 55 is fixed to the side of the second structural part 52 facing away from the first structural part 51, and an external thread is provided on the outer circumference of the protrusion 55, the protrusion 55 is located in the groove 531 and is threadedly connected to the second structural part 52; an internal thread is provided on the inner circumference of the empty cylinder 3, and an external thread is provided on the outer circumference of the cover 31, and the cover 31 is threadedly connected to the empty cylinder 3; wherein the internal thread provided in the groove 531 is opposite to the internal thread provided in the empty cylinder 3.

[0052] Specifically, the second structure portion 52 is rotated to drive the protrusion 55 to rotate synchronously, so that the protrusion 55 is rotated out of the groove 531 , and the push rod 53 is separated from the first structure portion 51 .

[0053] Further, when the cover 31 is threadedly connected to the empty cylinder 3, the cover 31 and the empty cylinder 3 can rotate relative to each other. When the second structural part 52 is rotated to move the convex part 55 out of the groove 531, the second structural part 52 will cause the push rod 53 to have a tendency to rotate following the second structural part 52, thereby driving the cover 31 to have a tendency to rotate following the second structural part 52. The internal thread provided in the groove 531 and the internal thread provided in the empty cylinder 3 have opposite helix directions. Then, when the cover 31 rotates following the second structural part 52, it will only be tightened more tightly with the empty cylinder 3, that is, the cover 31 cannot rotate at this time, which can ensure that rotating the second structural part 52 can still separate the second structural part 52 from the push rod 53.

[0054] Further, the cover 31 is threadedly connected to the empty cylinder 3, which can further separate the cover 31 from the empty cylinder 3. In this way, operations such as cleaning, disinfection, and replacing accessories are more convenient and have better effects.

[0055] Reference Figure 4 , in the exemplary embodiment, a liquid addition port 32 and an exhaust port 33 are provided on the outer periphery of the empty cylinder 3. The minimum distance between the liquid addition port 32 and the plane where the first seat surface is located is a, and the minimum distance between the exhaust port 33 and the plane where the first seat surface is located is b, and a < b.

[0056] Specifically, a refers to the minimum value of the distances from all points at the liquid addition port 32 to the plane where the first seat surface is located, and b refers to the minimum value of the distances from all points at the exhaust port 33 to the plane where the first seat surface is located. When a < b, the liquid addition port 32 is closer to the first seat surface than the exhaust port 33.

[0057] Among them, when the medicine inside the empty cylinder 3 needs to be added after being used up, the push rod 53 can be moved to make the piston part 54 fit the cover 31. At this time, the exhaust port 33 is located between the piston part 54 and the base 1. Medicine is added into the liquid addition port 32 through another syringe, and the excess gas in the empty cylinder 3 is discharged from the exhaust port 33.

[0058] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A continuous quantitative gavage device, characterized in that: include: The base (1) has a first seat surface and a second seat surface which are arranged opposite to each other in the height direction of the base; A support portion (2) fixed to a side of the first seat surface facing away from the second seat surface; An empty cylinder (3) is arranged on one side of the support portion (2), the axial direction of the empty cylinder (3) is the same as the first direction, and the first direction intersects with the plane where the first seat surface is located; A capillary tube (4), one end of which is connected to an end of the hollow cylinder (3) close to the base (1), and the capillary tube (4) is in communication with the interior of the hollow cylinder (3); A piston rod (5) extending along the first direction, the piston rod (5) being located in the hollow cylinder (3), an end of the piston rod (5) away from the base (1) extending out of the hollow cylinder (3), and the piston rod (5) having the freedom to move along the first direction; an intermittent transmission assembly (6), arranged on a side of the support portion (2) facing the empty cylinder (3), the intermittent transmission assembly (6) being connected to the piston rod (5), and the intermittent transmission assembly (6) driving the piston rod (5) to move intermittently along the first direction in response to a driving force; A rotating shaft (7), the axial direction of which is the same as the second direction, the rotating shaft (7) passes through the supporting portion (2), the rotating shaft (7) has the freedom to rotate around its own axial direction, the rotating shaft (7) is connected to the intermittent transmission component (6), the rotating shaft (7) provides the driving force for the intermittent transmission component (6), the second direction is perpendicular to the plane where the supporting portion (2) is located, and the second direction intersects with the first direction.

2. The continuous quantitative gastric gavage device according to claim 1, characterized in that: The gastric irrigation device also includes: The sealing cover (31) is arranged at one end of the empty cylinder (3) away from the base (1), and the piston rod (5) passes through the sealing cover (31) and is spline-connected to the sealing cover (31).

3. The continuous quantitative gastric gavage device according to claim 2, characterized in that: A first slide groove (21) is provided on a side of the support portion (2) facing the empty cylinder (3); the intermittent transmission assembly (6) comprises: A first sliding block (61) is slidably matched with the first sliding groove (21), the first sliding block (61) has the freedom to slide along the first direction, and the first sliding block (61) is interference-matched with the first sliding groove (21); a rack (62), arranged on a side of the support portion (2) facing the empty cylinder (3), the rack (62) being fixedly connected to the first sliding block (61), the rack (62) extending along the first direction, and one end of the rack (62) close to the base (1) being connected to the piston rod (5); The incomplete gear (63) is sleeved on the outer circumference of the rotating shaft (7). The rotating shaft (7) drives the incomplete gear (63) to rotate one circle, and the incomplete gear (63) and the rack (62) switch between meshing and non-meshing states twice.

4. The continuous quantitative gastric gavage device according to claim 1, characterized in that: The continuous quantitative gastric gavage device also includes: A connecting rod (81) is arranged on a side of the supporting portion (2) away from the empty cylinder (3), one end of the connecting rod (81) is fixedly connected to the rotating shaft (7), and the connecting rod (81) extends in the radial direction of the rotating shaft (7); A handle (82) is rotatably connected to an end of the connecting rod (81) away from the rotating shaft (7), and the handle (82) extends along the second direction.

5. The continuous quantitative gastric gavage device according to claim 3, characterized in that: A fixing assembly (9) is provided on the side of the support portion (2) facing the empty cylinder (3), and the fixing assembly (9) is detachably connected to the empty cylinder (3); the piston rod (5) comprises: A first structural part (51) connected to an end of the rack (62) close to the base (1); A second structural part (52) is rotatably connected to a side of the first structural part (51) away from the rack (62), and the second structural part (52) has a degree of freedom to rotate about the first direction; A push rod (53) is threadedly connected to a side of the second structural part (52) away from the first structural part (51), one end of the push rod (53) is located outside the empty cylinder (3), and the other end is located inside the empty cylinder (3); The piston part (54) is fixed to one end of the push rod (53) away from the second structural part (52), and the outer periphery of the piston part (54) is in contact with the inner periphery of the hollow cylinder (3).

6. The continuous quantitative gastric gavage device according to claim 5, characterized in that: A second slide groove (22) is provided on a side of the support portion (2) facing the empty cylinder (3); the fixing assembly (9) comprises: Two second sliding blocks (91) are both slidably matched with the second sliding groove (22), and the second sliding blocks (91) have the freedom to slide along a third direction, and the third direction is respectively perpendicular to the first direction and the second direction; Two springs (92) are both arranged in the second slide groove (22), the springs (92) extend along the third direction, the two springs (92) are respectively located on the side of the two second sliders (91) that are away from each other, the two ends of the springs (92) are respectively connected to the support portion (2) and one of the second sliders (91), and the springs (92) are in a compressed state; A clamping plate (93) corresponds one to one with the second sliding block (91); the clamping plate (93) is arranged on a side of the supporting portion (2) facing the empty cylinder (3); the clamping plate (93) is fixedly connected to the corresponding second sliding block (91); and the empty cylinder (3) is located between the two clamping plates (93).

7. The continuous quantitative gastric gavage device according to claim 5, characterized in that: A groove (531) is provided at one end of the push rod (53) facing the second structural part (52), and an inner circumference of the groove (531) is provided with an internal thread; The piston rod (5) further comprises: The raised portion (55) is fixed to a side of the second structural portion (52) facing away from the first structural portion (51), and an outer circumference of the raised portion (55) is provided with an external thread. The raised portion (55) is located in the groove (531) and is threadedly connected to the second structural portion (52).

8. The continuous quantitative gastric gavage device according to claim 6, characterized in that: An arc-shaped depression is provided on one side of the two clamping plates (93) close to each other, and a friction pad (931) is fixed to the arc-shaped depression, and the friction pad (931) is in contact with the outer circumference of the empty cylinder (3).

9. The continuous quantitative gastric gavage device according to claim 7, characterized in that: The inner circumference of the empty cylinder (3) is provided with an internal thread, the outer circumference of the sealing cover (31) is provided with an external thread, and the sealing cover (31) is threadedly connected to the empty cylinder (3); The internal thread arranged in the groove (531) has an opposite rotation direction to the internal thread arranged in the hollow cylinder (3).

10. The continuous quantitative gastric gavage device according to claim 7, characterized in that: The outer circumference of the hollow cylinder (3) is provided with a liquid filling port (32) and an exhaust port (33), the minimum distance between the liquid filling port (32) and the plane where the first seat surface is located is a, the minimum distance between the exhaust port (33) and the plane where the first seat surface is located is b, and a <b。

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