CN216536371U

CN216536371U - Multifunctional stomach irrigator

Info

Publication number: CN216536371U
Application number: CN202122422005.1U
Authority: CN
Inventors: 孔庆学
Original assignee: Suzhou Fangda New Drug Development Co ltd
Current assignee: Suzhou Fangda New Drug Development Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-05-17
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a multifunctional stomach irrigator, relating to the technical field of clinical tests; comprises a syringe and a connecting sleeve of a gastric perfusion needle; the connecting sleeve is connected with the injector and the intragastric administration needle, and a locking structure and a non-return structure are arranged in the connecting sleeve; the locking structure comprises a locking section sleeved outside the injector, an annular locking groove is formed in the inner wall of the locking section, and a fusiform closed-loop elastic reed is placed in the locking groove; the elastic reeds are provided with convex limiting columns which are arranged inwards at the centers of the two sides of the fusiform, and pressing blocks which are convex outwards are arranged at the positions of the elastic reeds at the tips of the two sides of the fusiform; and an annular limiting groove is formed in the position, corresponding to the limiting column, of the injector. The device can complete multiple times of multiple drug gavage after the gavage needle is inserted once, and avoids damage to experimental animals caused by improper force exertion in the repeated operation process.

Description

Multifunctional stomach irrigator

Technical Field

The utility model relates to the technical field of clinical tests, in particular to a multifunctional gastric perfusion device.

Background

The oral gavage is the most common administration mode in animal experiments, and is particularly commonly used in the research of animal modeling of multiple disciplines such as physiology, pharmacology, immunity and the like, drug toxicology, drug effect, dose determination and the like. The method has simple operation, accurate dosage control, repeated administration of solution or suspension, and applicability to various experimental animals such as mouse, rat, rabbit, etc.

The stomach irrigator generally comprises an injector matched with a stomach irrigating needle with a special shape, and the stomach irrigating needle is simple in a smooth spherical shape, so that the esophagus of an experimental animal is prevented from being damaged in the inserting process. In some experimentation, need carry out the gavage of different medicines many times to experimental animals, but plug the gavage needle repeatedly, can increase experimental animals' misery, and also can be very serious to the damage of viscera, there are some at present and can not change the gavage ware that the medicine supplyes and change can be accomplished to the gavage needle, but use inconvenient, will exert oneself on the gavage needle very easily in operation process, cause the impact to experimental animals.

Disclosure of Invention

The present invention is directed to a multifunctional gastric lavage device to solve the problems set forth above in the background art. The device does not use a medicine supplementing mode, but directly designs a structure capable of taking down the injector for replacement, and the process of taking down the injector is simple to operate and small in force, does not generate force capable of changing the position of the intragastric perfusion needle, and cannot damage experimental animals.

In order to achieve the purpose, the utility model provides the following technical scheme:

a multifunctional intragastric device comprises an injector and a connecting sleeve of an intragastric needle; the connecting sleeve is connected with the injector and the intragastric administration needle, and a locking structure and a non-return structure are arranged in the connecting sleeve; the locking structure comprises a locking section sleeved outside the injector, an annular locking groove is formed in the inner wall of the locking section, and a fusiform closed-loop elastic reed is placed in the locking groove; the elastic reeds are provided with convex limiting columns which are arranged inwards at the centers of the two sides of the fusiform, and pressing blocks which are convex outwards are arranged at the positions of the elastic reeds at the tips of the two sides of the fusiform; and an annular limiting groove is formed in the position, corresponding to the limiting column, of the injector.

As a further scheme of the utility model: the locking groove is provided with an inward notch at the position corresponding to the limiting column, the locking groove is provided with an outward notch at the position corresponding to the pressing block, the limiting column penetrates through the notch to protrude to the inner side of the locking groove, and the pressing block penetrates through the notch to protrude to the outer part of the connecting sleeve.

As a still further scheme of the utility model: the syringe includes injection tube and piston rod, flexible piston is installed to the one end that the piston rod inserted the injection tube, the connecting pipe is installed to the one end that the piston rod was kept away from to the injection tube, the one end that the piston rod was kept away from the injection tube is installed the one-level bracket, the one end outside that the injection tube is close to the piston rod is installed the second grade bracket.

As a still further scheme of the utility model: the connecting sleeve is internally and sequentially divided into a locking section, a sealing section and a non-return section, the diameter of the sealing section is matched with that of the connecting pipe, a sealing ring is installed in the sealing section, and the connecting pipe is in pressure contact with the sealing ring.

As a still further scheme of the utility model: the ball plug is in pressure contact with the joint of the non-return section and the sealing section, the shape of the joint of the non-return section and the sealing section is matched with that of the ball plug, and the spring is connected with the inner wall of the non-return section.

As a still further scheme of the utility model: the intragastric administration needle comprises a connector, an administration tube and an administration bead, wherein the two ends of the administration tube are respectively connected with the administration bead and the connector.

As a still further scheme of the utility model: and a connector connected with the non-return section is arranged outside the connecting sleeve and is in threaded connection with the connector.

Compared with the prior art, the utility model has the beneficial effects that:

by adopting the multifunctional intragastric perfusion device, the device has the function of realizing multi-frequency injection of various medicines by utilizing the mode of replacing the injector besides the basic intragastric perfusion function, and simultaneously has the function of preventing the reverse flow of the injected medicines by utilizing the non-return structure in the replacement process;

adopt above-mentioned multi-functional gavage ware, this device mainly realizes the fixed to the syringe through the locking structure, utilize spacing post on the elastic reed to insert the spacing groove on the syringe and form the connection, when the syringe is taken off to needs, from outside extrusion briquetting, make the elastic reed warp, spacing post outwards removes, the syringe breaks away from the restraint and can directly take off, high durability and convenient use, can relapse multiple medicine gavage of carrying on of many frequencies, and only produce inside extruded power to the adapter sleeve, can not lead to the needle of gavage to shift, avoid injuring experimental animals.

Drawings

Fig. 1 is a schematic structural view of the multifunctional gastric lavage device.

Fig. 2 is a schematic sectional structure view of the multifunctional gastric lavage device.

FIG. 3 is a schematic structural view of a locking structure in the multi-functional gastric lavage device.

In the figure: 1. a primary cradle; 2. a piston rod; 3. a secondary bracket; 4. an injection tube; 5. an injector; 6. briquetting; 7. a connecting sleeve; 8. a connector; 9. an administration tube; 10. a stomach filling needle; 11. administering the drug beads; 12. a flexible piston; 13. a limiting groove; 14. a locking groove; 15. a locking section; 16. a connecting pipe; 17. a seal ring; 18. a non-return section; 19. a connecting port; 20. a spring; 21. a ball plug; 22. a limiting column; 23. an elastic reed; 24. a notch; 25. a locking structure; 26. a non-return structure; 27. and a sealing section.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, in embodiment 1 of the present invention, a multifunctional gastric lavage device includes a syringe 5 and a connecting sleeve 7 of a gastric lavage needle 10; the connecting sleeve 7 is connected with the injector 5 and the intragastric administration needle 10, and a locking structure 25 and a non-return structure 26 are arranged in the connecting sleeve 7; the locking structure 25 comprises a locking section 15 sleeved outside the injector 5, an annular locking groove 14 is formed in the inner wall of the locking section 15, and a shuttle-shaped closed-loop elastic reed 23 is placed in the locking groove 14; the elastic reeds 23 are provided with convex limiting columns 22 at the centers of two sides of the fusiform shape towards the inner side, and pressing blocks 6 which are convex towards the outer side are arranged at the tips of the elastic reeds 23 at two sides of the fusiform shape; an annular limiting groove 13 is formed in the position, corresponding to the limiting column 22, of the injector 5.

This device has used the locking sleeve to connect between syringe 5 and gavage needle 10, and the inside locking structure 25 of locking sleeve can lock and the unblock syringe 5, inserts experiment animal stomach at gavage needle 10 after, can use syringe 5 to inject into the medicine, later takes off syringe 5 through locking structure 25, changes the syringe 5 of the medicine of other absorptions into, can carry out the continuous gavage of multiple different medicines of multiple type many times. Through the mode, when a single experimental animal is subjected to multi-drug intragastric administration, the intragastric administration needle 10 does not need to be frequently removed and inserted, the pain of the experimental animal can be greatly relieved, the probability of stress reaction is reduced, and the internal organs of the experimental animal are prevented from being damaged.

The locking structure 25 of the device is a shuttle-shaped elastic reed 23, the limiting columns 22 positioned in the middle parts of two sides have the tendency of moving inwards, so that the limiting columns are inserted into the corresponding limiting grooves 13 inwards, when the injector 5 needs to be taken down or put into the injector, only two pressing blocks 6 positioned on the outer side need to be pressed inwards, the elastic reed 23 deforms, meanwhile, the positions of the middle parts of two sides bulge outwards, the limiting columns 22 are separated from the limiting grooves 13, the axes of the locking sections 15 are not blocked, and the injector 5 can be freely put into or removed. This locking structure 25 not only can effectual completion fixed work, and from both sides to the axial of connecting sleeve 7 hard during the operation, does not produce the power that can make connecting sleeve 7 remove, consequently the process of changing syringe 5 can avoid driving gavage needle 10 and remove, has just also avoided changing the injury to the experimental animals caused by the gavage needle 10 of in-process shake.

Example 2

Referring to fig. 1 to 3, the main differences between the embodiment 2 and the embodiment 1 are:

referring to fig. 2 and 3, in embodiment 2 of the present invention, the locking groove 14 is provided with an inward notch 24 at a position corresponding to the position of the position-limiting post 22, the locking groove 14 is provided with an outward notch 24 at a position corresponding to the position of the pressing block 6, the position-limiting post 22 passes through the notch 24 and protrudes to the inside of the locking groove 14, and the pressing block 6 passes through the notch 24 and protrudes to the outside of the connecting sleeve 7. The limiting column 22 penetrates through the notch 24 to penetrate inwards to limit the movement of the injector 5, the pressing block 6 penetrates through the notch 24 to protrude on the surface of the connecting sleeve 7, and a worker can directly press and operate when operation is needed.

Referring to fig. 1 and 2, the injector 5 includes an injection tube 4 and a piston rod 2, a flexible piston 12 is installed at one end of the piston rod 2 inserted into the injection tube 4, a connecting pipe 16 is installed at one end of the injection tube 4 far away from the piston rod 2, a primary bracket 1 is installed at one end of the piston rod 2 far away from the injection tube 4, and a secondary bracket 3 is installed at the outer side of one end of the injection tube 4 close to the piston rod 2. The plunger rod 2 is used to control the syringe 5 to draw and expel the drug and the primary carrier 1 and secondary carrier 3 are used to complete the withdrawal of the plunger rod 2.

Referring to fig. 2, the inside of the connecting sleeve 7 is sequentially divided into a locking section 15, a sealing section 27 and a non-return section 18, the diameter of the sealing section 27 is matched with the diameter of the connecting pipe 16, a sealing ring 17 is installed in the sealing section 27, and the connecting pipe 16 is in pressure contact with the sealing ring 17. The locking section 15 is located outside the injector 5 and is used for fixing the injector 5, the sealing section 27 is used for forming a seal with the injector 5 to prevent the medicine from being polluted, and the non-return section 18 is used for placing reverse flow and ensuring that the reverse flow cannot occur when the injector 5 is replaced. The syringe 5 is connected to other equipment by means of a connecting tube 16, which connecting tube 16 is inserted into a sealing section 27, forming a seal by means of a sealing ring 17.

Referring to fig. 2, a non-return structure 26 is installed in the non-return section 18, the non-return structure 26 includes a spring 20 and a ball plug 21, the spring 20 is connected to the ball plug 21, the ball plug 21 is in pressure contact with a connection portion of the non-return section 18 and a sealing section 27, a shape of the connection portion of the non-return section 18 and the sealing section 27 is matched with a shape of the ball plug 21, and the spring 20 is connected to an inner wall of the non-return section 18. The spring 20 jacks up the ball plug 21 towards the direction of the sealing section 27, the non-return section 18 can be sealed due to shape matching, when medicine is required to be filled, the ball plug 21 can be flushed away by liquid pressure from the sealing section 27, administration is not affected, the flow rate of the non-return section 18 is limited by the ball plug 21, the fluid pressure in the whole stomach filling process is controlled, and impact of a liquid column on the stomach of an experimental animal is avoided.

Referring to fig. 1 and 2, the stomach filling needle 10 includes a connector 8, a drug administration tube 9 and a drug administration bead 11, and two ends of the drug administration tube 9 are respectively connected to the drug administration bead 11 and the connector 8. The connector 8 of the stomach filling needle 10 is used for connecting other devices, can be directly connected with the connecting pipe 16 of the injector 5, and can also be used for being connected with the connecting sleeve 7 in a device, the administration pipe 9 is used for being inserted into the stomach of an experimental animal, and the administration bead 11 is used for avoiding damaging the esophagus of the animal in the insertion process.

Referring to fig. 1 and 2, a connection port 19 connected with the non-return section 18 is installed outside the connection sleeve 7, and the connection port 19 is in threaded connection with the connection head 8. The connecting sleeve 7 can be used repeatedly, is connected with the intragastric administration needle 10 and then is connected with the injector 5 in a replaceable manner, the threaded connection is firmer, and the interference fit between the connector 8 and the connector 19 is used for pressure connection without influencing the use effect.

The working principle of the utility model is as follows:

this device has used connecting sleeve 7 between syringe 5 and gavage needle 10, and the locking structure 25 of connecting sleeve 7 inside can be used for the locking and the change of syringe 5, reaches and need not take out gavage needle 10 at the gavage in-process, can carry out the work of multiple medicine multiple gavage, and connecting sleeve 7 is inside still to install non-return structure 26 simultaneously, utilizes non-return structure 26 can avoid the condition of the medicine adverse current that appears irritating in the intermittent type of changing syringe 5. The locking mechanism of this device not only has good locking effect, and easy operation is convenient, only extrudees connecting sleeve 7 from both sides to the middle part during the use, does not have the power that makes connecting sleeve 7 take place to shift, and the process that consequently can avoid changing drives gavage needle 10, injures experimental animals.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A multifunctional intragastric device comprises an injector and a connecting sleeve of an intragastric needle; the connecting sleeve is connected with the injector and the stomach filling needle, and a locking structure and a non-return structure are arranged in the connecting sleeve; the locking structure is characterized by comprising a locking section sleeved outside the injector, wherein an annular locking groove is formed in the inner wall of the locking section, and a fusiform closed-loop elastic reed is placed in the locking groove; the elastic reeds are provided with convex limiting columns which are arranged inwards at the centers of the two sides of the fusiform, and pressing blocks which are convex outwards are arranged at the positions of the elastic reeds at the tips of the two sides of the fusiform; and an annular limiting groove is formed in the position, corresponding to the limiting column, of the injector.

2. The multi-functional gastric lavage device of claim 1 wherein the locking groove is notched inwardly at a location corresponding to the position-limiting post, the locking groove is notched outwardly at a location corresponding to the pressure block, the position-limiting post protrudes through the notch to the inside of the locking groove, and the pressure block protrudes through the notch to the outside of the connection sleeve.

3. The multifunctional gastric perfusion apparatus of claim 1, wherein the injector comprises an injection tube and a piston rod, a flexible piston is installed at one end of the piston rod inserted into the injection tube, a connecting pipe is installed at one end of the injection tube far away from the piston rod, a primary bracket is installed at one end of the piston rod far away from the injection tube, and a secondary bracket is installed at the outer side of one end of the injection tube close to the piston rod.

4. The multifunctional gastric lavage device of claim 1, wherein the inside of the connection sleeve is divided into a locking section, a sealing section and a non-return section in turn, the diameter of the sealing section is matched with that of the connection pipe, a sealing ring is installed in the sealing section, and the connection pipe is in pressure contact with the sealing ring.

5. The multifunctional gastric perfusion apparatus of claim 4, wherein the non-return section is installed with a non-return structure, the non-return structure comprises a spring and a ball plug, the spring is connected with the ball plug, the ball plug is in pressure contact with the joint of the non-return section and the sealing section, the shape of the joint of the non-return section and the sealing section is matched with the shape of the ball plug, and the spring is connected with the inner wall of the non-return section.

6. The multifunctional intragastric perfusion apparatus of claim 1, wherein the intragastric perfusion needle comprises a connector, a drug administration tube and a drug administration bead, and the two ends of the drug administration tube are respectively connected with the drug administration bead and the connector.

7. The multifunctional gastric lavage device of claim 1 or 4 wherein the connecting sleeve is externally provided with a connecting port for connecting the backstop section, and the connecting port is in threaded connection with the connecting head.