CN219629857U

CN219629857U - Stomach irrigation device

Info

Publication number: CN219629857U
Application number: CN202222926218.2U
Authority: CN
Inventors: 孙红; 庄勇; 熊治林
Original assignee: Affiliated Hospital of Guizhou Medical University
Current assignee: Affiliated Hospital of Guizhou Medical University
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-09-05
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a gastric lavage device, which comprises a needle cylinder and a suction assembly, wherein the suction assembly is in threaded connection with the rear end of the needle cylinder; the stomach filling device drives the control piston to move to a corresponding scale mark in the suction cylinder by rotating the control screw to adjust the dosage of the sucked liquid medicine of the needle cylinder, drives the suction piston to return to an initial position by pressing the suction polish rod, loosens the suction polish rod, and moves the suction piston to an adjusted position by utilizing the restoring elasticity of the spring so as to enable the needle cylinder to extract the required liquid medicine amount, and finally fills the liquid medicine into the stomach of a mouse; repeated pressing and loosening operations of the pumping polish rod enable the liquid medicine amount extracted each time to be the same, prevent deviation caused by uneven force application during manual liquid medicine pumping, accurately control the liquid medicine extracting precision, and improve the experimental data accuracy.

Description

Stomach irrigation device

Technical Field

The utility model relates to the technical field of medical auxiliary appliances, in particular to a gastric lavage device.

Background

With the development of medical technology, animal experiments have become the basic method of medical experimental research. Depending on the purpose of the experiment, the kind of the experimental animal and the dosage of the drug, different administration methods should be performed on the experimental animal. The oral gastric lavage administration method is an important administration way, and the gastric lavage administration can accurately grasp the administration dosage and control the administration time, thereby having important significance in animal experiments of nutrition and medicine.

In mouse experiments, one typically uses a gastric lavage device to infuse the drug into the stomach of the experimental mouse. The prior art gastric lavage device is actually a specially made hollow needle with a standard syringe interface. In using such a gastric lavage device, a desired amount of the drug solution is aspirated into the syringe cavity by pulling the syringe handle, after which the front end of the gastric lavage device is inserted into the esophagus of the animal, and the syringe handle is pushed to infuse the drug solution into the stomach of the mouse. In the process of extracting the required amount of liquid medicine, the number of mice requiring experimental gastric lavage is large, but the liquid medicine amount extracted by doctors at each time cannot be ensured to be the same due to uneven force of the doctors or shaking of handles of the drawing syringe, so that the liquid medicine amounts injected into the stomachs of different experimental mice are slightly different, the data obtained by experiments are deviated, and the experimental results are inaccurate.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a gastric lavage device which solves the problems that in the process of extracting the needed amount of liquid medicine, the number of mice needing experimental gastric lavage is more, but the liquid medicine extracted by doctors at each time cannot be ensured to be the same due to uneven force of the doctors, so that the liquid medicine amounts injected into the stomachs of different experimental mice are slightly different, the data obtained by experiments deviate, and the experimental results are inaccurate.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a gastric lavage device comprises a syringe and a suction assembly, wherein the suction assembly is in threaded connection with the rear end of the syringe; the suction assembly comprises a suction barrel, a control screw rod, a suction polish rod, a guide disc, a control piston and a suction piston, wherein the control screw rod is of a hollow structure, the front end of the suction barrel is in threaded connection with the rear end of a needle cylinder, the guide disc is fixed on the rear end face of the suction barrel, the front end thread of the control screw rod penetrates through the guide disc, then is inserted into the suction barrel and is rotationally connected with the control piston positioned in the suction barrel, the outer wall of the control piston is attached to the inner wall of the suction barrel and is in sliding connection with the suction rod, the suction polish rod is slidably arranged in the control screw rod, the front end of the suction polish rod extends to the outer side of the front end of the control screw rod and is fixedly connected with the suction piston positioned in the suction barrel in a sliding manner, an elastic piece is arranged at one end, far away from the control piston, of the suction piston, of the elastic piece is fixedly connected to the inner wall of the front end of the suction barrel.

The stomach filling device adjusts the dosage of the liquid medicine sucked by the needle cylinder by rotating the control screw to drive the control piston to move to the corresponding position in the suction cylinder, drives the suction piston to return to the initial position by pressing the suction polish rod, loosens the suction polish rod, enables the suction piston to move to the adjusted position by utilizing the restoring elasticity of the elastic piece, enables the needle cylinder to suck the required liquid medicine amount, and finally fills the liquid medicine into the stomach of the mouse; repeated pressing and loosening operations of the pumping polish rod enable the liquid medicine amount extracted each time to be the same, prevent deviation caused by uneven force application during manual liquid medicine pumping, accurately control the liquid medicine extracting precision, and improve the experimental data accuracy.

Further, scale marks are arranged on the suction cylinder.

Further, the elastic piece comprises a spring and a clamping ring, the outer side wall of the clamping ring is fixed on the inner wall of the front end of the suction cylinder, one end of the spring is fixedly connected to the side face of the clamping ring, and the other end of the spring is connected to the end face of the suction piston, which is far away from the control piston.

Further, the front end of the syringe is provided with an injection head.

Further, the rear end of the pumping polished rod extends to the outer side of the rear end of the control screw rod and is fixedly connected with a pressing plate.

Further, the rear end fixedly connected with rotating head of control screw rod, the rotatable cover of rotating head is established in the outside of sucking polished rod, and the outside of rotating head is equipped with anti-skidding line.

Further, the middle part of the guide disc is provided with a threaded hole, and the control screw rod is arranged in the threaded hole in a penetrating way.

Further, a limiting ring is fixedly arranged on the inner wall of the suction cylinder, and the front end face of the suction piston can be abutted against the limiting ring.

The utility model has the beneficial effects that: the stomach filling device adjusts the dosage of the liquid medicine sucked by the needle cylinder by rotating the control screw to drive the control piston to move to the corresponding scale mark in the suction cylinder, drives the suction piston to return to the initial position by pressing the suction polish rod, loosens the suction polish rod, enables the suction piston to move to the adjusted position by utilizing the restoring elasticity of the spring, so that the needle cylinder is drawn to the required liquid medicine amount, and finally the liquid medicine is filled into the stomach of the mouse; the operation of pressing and loosening the suction polish rod is repeated, so that the liquid medicine amount extracted each time is the same, deviation caused by uneven force application during manual liquid medicine suction is prevented, the liquid medicine extraction precision is accurately controlled, and the experimental data accuracy is improved; the setting of the limiting ring enables the disassembling piston to accurately return to the initial position; the needle cylinder is connected with the suction head through threads, so that the needle cylinder is detachable, and is convenient to disinfect and repeatedly use.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a cross-sectional view of a suction assembly;

FIG. 4 is an enlarged view of FIG. 3 at A;

reference numerals:

10-syringe, 20-suction assembly, 21-suction cylinder, 22-control screw, 221-rotating head, 23-suction polish rod, 231-pressing plate, 24-guide disc, 25-control piston, 251-ring groove, 252-ring block, 26-suction piston, 27-limit ring, 28-spring, 29-snap ring, 30-injection head, 40-seal ring and 50-scale mark.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations and positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the indicated positions or elements must have a specific orientation, be constructed and operated in a specific manner, and thus are not to be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Referring to fig. 1 to 3, the gastric lavage device provided by the present utility model includes a syringe 10 and a suction assembly 20, wherein an injection head 30 is disposed at the front end of the syringe 10, and the suction assembly 20 is screwed at the rear end of the syringe 10 by a sealing ring 40. When the device is used, the suction assembly 20 is used for controlling the amount of liquid medicine sucked each time, so that the liquid medicine enters the syringe 10, then the liquid medicine is injected into the stomach of a mouse, the amount of the liquid medicine sucked each time is the same, the amount of the liquid medicine in the stomach of each mouse is the same, and deviation of data obtained through experiments is prevented.

Wherein, the suction tube 21 is provided with graduation marks 50, the maximum range of graduation is 0.5ml, each small lattice is 0.02ml, and each large lattice is 0.1ml. The setting of scale mark 50 is convenient for carry out the volume of liquid medicine's volume of getting, and the volume of liquid medicine of accurate control extraction. And the maximum gastric lavage liquid medicine amount for the mice is 0.4ml, the volume of the syringe 10 is more than 0.5ml, and the extracted liquid medicine amount is prevented from flowing into the suction cylinder 21.

The suction assembly 20 comprises a suction cylinder 21, a control screw 22, a suction polished rod 23, a guide disc 24, a control piston 25 and a suction piston 26, wherein the suction cylinder 21 and the needle cylinder 10 are made of transparent materials, the interior of the control screw 22 is of a hollow structure, the front end of the suction cylinder 21 is in threaded connection with the rear end of the needle cylinder 10, the guide disc 24 is fixedly arranged on the rear end face of the suction cylinder 21, the front end of the control screw 22 is inserted into the suction cylinder 21 after penetrating through the guide disc 24 and is in rotary connection with the control piston 25 positioned in the suction cylinder 21, the outer wall of the control piston 25 is in fit and sliding connection with the inner wall of the suction cylinder 21, the suction polished rod 23 is slidably arranged in the control screw 22, the front end of the suction polished rod 23 extends to the outer side of the front end of the control screw 22 and is in sliding connection with the suction piston 26 positioned in the suction cylinder 21, the outer wall of the suction piston 26 is in fit and sliding connection with the inner wall of the suction cylinder 21, one end of the suction piston 26, which is far away from the control piston 25, an elastic piece is arranged on the inner wall of the suction cylinder 21, and one end of the elastic piece is fixedly connected with the front end of the suction piston 26. When the rear end surface of the control piston 25 is level with the zero graduation line, the elastic piece is in a compressed state at the moment, so that the elastic piece always has acting force on the suction piston 26 to drive the suction piston 26 to move; when the rear end surface of the control piston 25 moves to the corresponding scale, the elastic member is in a compressed state. Both the control piston 25 and the suction piston 26 are made of rubber material.

When in use, in an initial state, the rear end surface of the control piston 25 is flush with the zero scale mark; the first step, adjusting the liquid medicine sucking amount, rotating the control screw 22, so that the control screw 22 drives the control piston 25 to move towards the rear end of the control piston in the sucking cylinder 21, and the control piston 25 moves to the corresponding scale mark 50, and controlling the liquid medicine amount required to be extracted by the moving distance of the control piston 25; because the elastic piece has acting force on the suction piston 26, the suction piston 26 moves synchronously along with the control piston 25, and meanwhile, the movement of the suction piston 26 also drives the suction polish rod 23 to move in the control screw 22; secondly, connecting the injection head 30 with the stomach-filling needle, then pressing the suction polish rod 23 to enable the suction piston 26 to move to an initial position, enabling the stomach-filling needle to penetrate into the liquid medicine, slowly loosening the suction polish rod 23, pushing the suction piston 26 to move by utilizing the restoring elasticity of the elastic piece until the suction piston 26 is next to the control piston 25, and at the moment, pumping the liquid medicine amount of a required volume by the syringe 10; when the medicine amount is sucked later, the pumping piston 26 is only required to return to the initial position by pressing the polish rod, so that the medicine amount pumped in the syringe 10 is the same each time, and deviation caused by uneven force when the medicine is manually pumped is prevented.

Preferably, a stop collar 27 is fixedly provided on the inner wall of the suction barrel 21. When the rear end surface of the control piston 25 is level with the zero graduation mark 50, the front end surface of the suction piston 26 is abutted against the limiting ring 27; the setting of spacing ring 27 is convenient for confirm the initial position of suction piston 26, when pressing the suction polished rod 23 and driving suction piston 26 and remove for suction piston 26 is accurate to get back to initial position, and the simple operation improves suction efficiency.

Preferably, the rear end of the pumping polished rod 23 extends to the outside of the rear end of the control screw 22 and is fixedly connected with a pressing plate 231; pressing the pumping polished rod 23 is facilitated by the pressing plate 231. The rear end of the control screw 22 is fixedly connected with a rotary head 221, the rotary head 221 is rotatably sleeved on the outer side of the pumping polished rod 23, and anti-skid patterns are arranged on the outer side of the rotary head 221; the rotation of the control screw 22 is facilitated by the swivel head 221.

Referring to fig. 4, in the present embodiment, the elastic member includes a spring 28 and a snap ring 29, wherein an outer side wall of the snap ring 29 is fixed on an inner wall of a front end of the suction cylinder 21, one end of the spring 28 is fixedly connected to a side surface of the snap ring 29, and the other end is connected to an end surface of the suction piston 26 remote from the control piston 25. The spring 28 is supported by the retainer ring 29, and in an initial state, the spring 28 is in a compressed state, and a restoring elastic force of the spring 28 is utilized to provide a force for the suction piston 26 to move towards the control piston 25, so that when the control piston 25 is moved outwards by the control screw 22, the suction piston 26 can synchronously move along with the control piston 25, so as to adjust the amount of liquid medicine sucked each time.

In this embodiment, a threaded hole is formed in the middle of the guide plate 24, and the control screw 22 is threaded in the threaded hole. Due to the threaded connection of the control screw 22 and the threaded hole, the control screw 22 is driven to move in the axial direction after the control screw 22 is rotated.

Referring to fig. 3 and 4, in the present embodiment, a side surface of the control piston 25 away from the suction piston 26 is provided with a ring groove 251 having a T-shaped structure, a front end of the control screw 22 is provided with a ring block 252 having a T-shaped structure, and the ring block 252 is rotatably connected to the ring groove 251. When the control piston 25 rotates, the control piston 25 rotates in the ring groove 251, and the control piston 25 moves outwards due to the threaded connection between the control piston 25 and the guide disc 24, so that the ring block 252 drives the control piston 25 to slide towards the rear end of the suction cylinder 21.

The working principle of the utility model is as follows: in use, in an initial state, the rear end surface of the control piston 25 is flush with the zero graduation mark 50; the first step, adjusting the liquid medicine sucking amount, rotating the control screw 22 to drive the control piston 25 to move towards the rear end of the control piston in the sucking cylinder 21, so that the control piston 25 moves to the corresponding scale mark 50, and controlling the liquid medicine amount required to be extracted by the moving distance of the control piston 25; restoring the elastic force by the spring 28 so that the suction piston 26 moves synchronously with the control piston 25; secondly, pumping the liquid medicine, pressing the pumping polished rod 23 to enable the pumping piston 26 to move and abut against the limiting ring 27 to return to the initial position, connecting the injection head 30 with the stomach-filling needle, enabling the stomach-filling needle to penetrate into the liquid medicine, slowly loosening the pumping polished rod 23, pushing the pumping piston 26 to move by utilizing the restoring elasticity of the spring 28 until the pumping piston 26 abuts against the control piston 25, and pumping the liquid medicine in a required volume by the needle cylinder 10; after the medicine is taken, the stomach-filling needle is sent into the stomach of the mouse, the pumping polish rod 23 is lightly pushed, and the medicine liquid in the syringe 10 flows through the stomach-filling needle and enters the stomach of the mouse; when the liquid medicine amount is sucked each time, the pumping piston 26 is returned to the initial position by pressing the polish rod, so that the liquid medicine amount sucked in the syringe 10 each time is the same, and deviation caused by uneven force when the liquid medicine is manually pumped is prevented.

When the amount of the gastric lavage liquid medicine of the mouse needs to be regulated, the control screw 22 is rotated to drive the control piston 25 to move to the corresponding position of the scale mark 50.

When the present gastric lavage device is not in use, the control screw 22 is rotated such that the suction piston 26 is moved, thereby allowing the spring 28 to resume its natural length, avoiding the spring force being affected by the spring 28 being in a compressed state for a long period of time.

The utility model has the beneficial effects that: the stomach filling device adjusts the dosage of the liquid medicine sucked by the needle cylinder 10 by rotating the control screw 22 to drive the control piston 25 to move to the corresponding scale mark 50 in the suction cylinder 21, drives the suction piston 26 to return to the initial position by pressing the suction polished rod 23, loosens the suction polished rod 23, enables the suction piston 26 to move to the adjusted position by utilizing the restoring elasticity of the spring 28, so that the needle cylinder 10 extracts the required liquid medicine amount, and finally fills the liquid medicine into the stomach of the mouse; the operation of repeatedly pressing and loosening the pumping polish rod 23 is repeated, so that the liquid medicine amount extracted each time is the same, deviation caused by uneven force application during manual liquid medicine pumping is prevented, the liquid medicine extracting precision is accurately controlled, and the experimental data accuracy is improved; meanwhile, as the measuring range of the sucked liquid medicine is fixed, the reading step of each time of sucking is reduced, the efficiency is improved, and the error caused by the degree is avoided; the positioning of the limiting ring 27 enables the disassembly piston to return to the initial position accurately; the syringe 10 and the suction cylinder 21 are connected by screw threads, so that the syringe 10 can be disassembled, and is convenient for disinfection and repeated use.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. A gastric lavage device, characterized by comprising a syringe and a suction assembly, wherein the suction assembly is in threaded connection with the rear end of the syringe; the suction assembly comprises a suction cylinder, a control screw rod, a suction polish rod, a guide disc, a control piston and a suction piston, wherein the control screw rod is of a hollow structure, the front end of the suction cylinder is in threaded connection with the rear end of a needle cylinder, the guide disc is fixed on the rear end face of the suction cylinder, the front end of the control screw rod penetrates through the guide disc and then is inserted into the suction cylinder and is rotationally connected with the control piston positioned in the suction cylinder, the outer wall of the control piston is attached to the inner wall of the suction cylinder and is in sliding connection with the inner wall of the suction cylinder, the suction polish rod is slidably arranged in the control screw rod, the front end of the suction polish rod extends to the outer side of the front end of the control screw rod and is slidably connected with the suction piston positioned in the suction cylinder in a penetrating manner, one end of the suction piston, which is far away from the control piston, is provided with an elastic piece, and one end of the elastic piece, which is far away from the suction piston, is fixedly connected on the inner wall of the front end of the suction cylinder.

2. A gastric lavage device as claimed in claim 1 wherein: and scale marks are arranged on the suction cylinder.

3. A gastric lavage device as claimed in claim 2 wherein: the elastic piece comprises a spring and a clamping ring, the outer side wall of the clamping ring is fixed on the inner wall of the front end of the suction cylinder, one end of the spring is fixedly connected to the side face of the clamping ring, and the other end of the spring is connected to the end face of the suction piston, which is far away from the control piston.

4. A gastric lavage device as claimed in claim 2 or 3 wherein: the front end of the needle cylinder is provided with an injection head.

5. A gastric lavage device as claimed in claim 2 wherein: the rear end of the suction polish rod extends to the outer side of the rear end of the control screw rod and is fixedly connected with a pressing plate.

6. A gastric lavage device as claimed in claim 2 wherein: the rear end fixedly connected with rotating head of control screw rod, the rotatable cover of rotating head is established in the outside of sucking polished rod, the outside of rotating head is equipped with the anti-skidding line.

7. A gastric lavage device as claimed in claim 2 wherein: the middle part of the guide disc is provided with a threaded hole, and the control screw rod is arranged in the threaded hole in a penetrating way.

8. A gastric lavage device as claimed in claim 2 wherein: the inner wall of the suction cylinder is fixedly provided with a limiting ring, and the front end face of the suction piston can be abutted against the limiting ring.