CN219148015U - Animal Cerebral Hemorrhage Suction Model Indwelling Device - Google Patents

Abstract

The utility model discloses an animal cerebral hemorrhage suction model retention device, which comprises a tubular retention cylinder, wherein a blocking mechanism is arranged on the tubular retention cylinder, the blocking mechanism comprises an elastic ring arranged on the tubular retention cylinder and elastic thorns arranged on the tubular retention cylinder in a circumferential array, and extension bulges are arranged on the elastic ring. The utility model provides a suction device for a rat cerebral hemorrhage model, which is characterized in that a mini-injector is inserted into a tubular retention cylinder and directly stretches into the tubular retention cylinder along an opened hole, at the moment, an elastic thorn is clamped to an elastic ring and pushes an extension bulge to fold towards the elastic ring, so that the sectional area of the elastic ring is increased, the effect of blocking the hole is achieved, intracranial blood or tissue fluid is prevented from flowing out, then the mini-injector is used for injection, the mini-injector is pulled out after the injection, the tubular retention cylinder is retained at the top of the rat cranium, and a flap is further arranged, so that the blood or tissue fluid can be prevented from flowing out of the brain in the subsequent injection.

Description

Animal Cerebral Hemorrhage Suction Model Indwelling Device

technical field

The utility model relates to the technical field of experimental equipment, in particular to an indwelling device for an animal cerebral hemorrhage suction model.

Background technique

When conducting experiments on animal cerebral hemorrhage aspiration models, holes were drilled in the skull top of mice to facilitate the injection of autologous blood during model building.

According to the patent number CN202110116162.1, publication (announcement) date: 2021-06-11, a double-syringe-based experimental mouse cerebrospinal fluid extraction device is disclosed, including a base, an extractor, a syringe, a mounting mechanism, a valve seat, a needle, and a valve Core and injection mechanism. The extraction device can replenish the cerebrospinal fluid replacement fluid to the cerebellar cistern of the experimental mouse in time without pulling out the needle after extracting the cerebrospinal fluid of the experimental mouse. The accuracy of the experimental data is improved, the safety and efficiency of the experiment are guaranteed, and a guarantee is provided for the smooth progress of the experiment.

In the prior art including the above-mentioned patents, after the skull top of the mouse is drilled and modeled, the blood in the skull will gush out from the opened hole, and it needs to be blocked at this time, but it will not It is convenient for the injection of drugs, and it is difficult to determine the location of the hematoma by puncturing again after the blockage, and it is inconvenient to inject a small amount of drugs multiple times and aspirate the hematoma.

Utility model content

The purpose of the utility model is to provide an indwelling device for aspiration model of animal cerebral hemorrhage, aiming at solving the problems of inconvenient hematoma aspiration and hematoma cavity injection after craniotomy.

In order to achieve the above object, the utility model provides the following technical proposal: the indwelling device for the animal cerebral hemorrhage suction model includes a tubular retention cylinder, and the tubular retention cylinder is provided with a blocking mechanism, and the blocking mechanism includes a The elastic ring on the tubular retention cylinder and the elastic thorns arranged on the tubular retention cylinder in a circular array, the elastic ring is provided with extension protrusions, and the elastic thorns are driven to turn over to push against the extension Raised and curved.

Preferably, a one-way frame is clamped inside the tube-shaped retention cylinder, and a valve is connected to the one-way frame for symmetrical rotation, and the valve is driven to overturn to block the one-way frame.

Preferably, a limit block is arranged on the one-way frame, and the valve is driven to fit against the limit block.

Preferably, the first end of the tubular retention cylinder is provided with a fitting elastic piece.

As a preference, a circular groove is formed on the lamination elastic sheet, and a protective cover is clamped on the circular groove.

Preferably, the tubular retention cylinder is a silica gel cylinder.

Preferably, the laminating elastic sheet is a silicone sheet.

Preferably, the elastic thorns are metal thorns.

In the above technical solution, the utility model provides an indwelling device for aspiration model of animal cerebral hemorrhage, which has the following beneficial effects: insert the micro-syringe into the tube-shaped retention cylinder after opening a hole in the top of the skull of the mouse, and directly follow the opened hole Stretch in, at this time, the elastic thorn will move closer to the elastic ring as it is inserted, and push against the extending protrusion to fold toward the elastic ring, so as to increase the cross-sectional area of the elastic ring, so as to block the hole and prevent intracranial The blood or tissue fluid flows out, and then is injected with a micro-syringe. After the injection, the micro-syringe is pulled out, and the tube-shaped retention cylinder is retained on the top of the skull of the mouse. A valve is also provided to prevent the blood or tissue fluid from flowing out of the brain during subsequent injections.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the overall schematic diagram that the utility model embodiment provides;

Fig. 2 is the whole explosion schematic diagram that the utility model embodiment provides;

Fig. 3 is a schematic diagram of the elastic ring and the elastic thorn provided by the embodiment of the present invention.

Explanation of reference signs:

1. Tubular retention cylinder; 11. One-way frame; 12. Limiting block; 13. Valve; 2. Fitting elastic sheet; 21. Ring groove; Elastic ring; 42, extending protrusion; 43, elastic thorn.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some of the embodiments of the present disclosure, but not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure.

As shown in Figures 1-3, an indwelling device for an animal cerebral hemorrhage suction model includes a tubular retention cylinder 1, and a blocking mechanism 4 is arranged on the tubular retention cylinder 1. The elastic ring 41 on 1 and the elastic thorns 43 arranged in a circular array on the tubular retention tube 1, the elastic ring 41 is provided with extension protrusions 42, and the elastic thorns 43 are driven to turn over to push against the extension protrusions 42 to bend.

Specifically, the tubular retention cylinder 1 is provided with a blocking mechanism 4, which includes an elastic ring 41 disposed on the tubular retention cylinder 1 and elastic thorns 43 disposed on the tubular retention cylinder 1 in a circular array, The elastic ring 41 is provided with an extension protrusion 42; when in use, firstly, a hole is opened on the top of the skull of the mouse, and the hole is in the shape of a tube. Fitting the hole, the elastic thorns 43 will bend along the skull along with the sliding, and get close to the extension protrusion 42, and finally the elastic thorns 43 push against the extension protrusion 42 and bend and fit the elastic ring 41, so that the extension protrusion 42 It fits with the elastic ring 41 to play the role of blocking the hole, and the drug can be administered through the upper end of the tube-shaped retention tube 1 (see Figure 2 as a reference), and the lower end (see Figure 2 as a reference) is not easy Allow blood or interstitial fluid to drain. After the injection, the micro-syringe was pulled out, and the tubular retention cylinder 1 was retained on the cranial top of the mouse to facilitate the next administration, and the administration point was consistent.

In the above technical solution, insert the micro-syringe into the tube-shaped retention tube 1 after opening the hole in the top of the rat's skull, and extend it directly along the opened hole. The extension protrusion 42 is folded towards the elastic ring 41 to increase the cross-sectional area of the elastic ring 41, so as to block the hole and prevent intracranial blood or interstitial fluid from flowing out, and then inject it with a micro-injector, and pull it out after the injection. The micro-syringe is taken out, and the tubular retention cylinder 1 is retained on the skull top of the mouse, and a valve 13 is also provided to prevent blood or interstitial fluid from flowing out of the brain during subsequent injections.

As a further embodiment of the present application, a one-way frame 11 is arranged inside the tubular retention cylinder 1, and a valve 13 is connected to the one-way frame 11 for symmetrical rotation (the valve 13 can be semicircular or disc-shaped) , the one-way frame 11 is provided with a limit block 12, the limit block 12 is used to limit the flap 13 can only be turned inward (the inside is the tubular retention cylinder 1), so as to prevent blood or tissue fluid from flowing out of the brain, when When blood or interstitial fluid is about to gush out, it will push against the valve 13 and overturn to block the one-way frame 11. When it is necessary to inject medicine into the brain, the micro-syringe will directly contact the valve 13 and overturn for injection.

As a further embodiment of the present invention, the first end of the tube-shaped retention cylinder 1 (with reference to FIG. 2, the first end is the upper end) is provided with a fitting elastic sheet 2, and an annular groove 21 is opened on the fitting elastic sheet 2. , a protective cover 22 is clamped on the annular groove 21, and after inserting the tube-shaped retention tube 1, the elastic sheet 2 is attached to the skull of the mouse to prevent the displacement of the tube-type retention tube 1, and when not injected, the protective cover can be The cover 22 is clamped on the annular groove 21 to block the tubular retention tube 1 .

As a further embodiment of the present invention, the tubular retention tube 1 and the elastic thorns 43 are made of metal, which are not easy to be damaged and deformed. Wet, the adhesive elastic sheet 2 of silica gel can play a certain role in adsorption.

Working principle: Firstly, a hole is made on the top of the rat’s skull. The hole is in the shape of a tube. Insert the micro-syringe into the tube-shaped retention tube 1, extend directly along the opened hole and continue to fit the hole. The elastic thorn 43 will slide along the The skull is bent and close to the extension protrusion 42, and finally the elastic thorns 43 push against the extension protrusion 42 and bend to fit the elastic ring 41, so that the extension protrusion 42 and the elastic ring 41 fit together to block The effect of hole, and can carry out administration through the upper end (with Fig. 2 as a reference) of tubular retention tube 1, and the lower end (with Fig. 2 as reference) is tube-shaped not easy to allow blood or interstitial fluid to flow out. After the injection, the micro-syringe is pulled out, and the tubular retention cylinder 1 is retained on the skull top of the mouse to facilitate the next administration, and the administration point is consistent. At this time, the mouse skull is relatively moist after disinfection, and the elastic sheet 2 of silica gel can It has a certain adsorption effect, and when injection is required, directly hold the micro-injector to touch the valve 13 and push it to turn over for injection. When not injecting, the protective cover 22 is clamped on the ring groove 21 to block it Tubular retention cylinder 1.

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Undoubtedly, for those skilled in the art, without departing from the spirit and scope of the present utility model, various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (8)

1. A suction model indwelling device for animal cerebral hemorrhage, characterized in that it comprises a tube-type retention tube (1), and the tube-type retention tube (1) is provided with a blocking mechanism (4), and the blocking mechanism (4) comprising an elastic ring (41) arranged on the tube-type retention tube (1) and elastic thorns (43) arranged in a circular array on the tube-type retention tube (1), the elastic ring ( 41) is provided with an extension protrusion (42), and the elastic thorn (43) is driven to turn over to push against the extension protrusion (42) to bend. 2. The animal cerebral hemorrhage suction model indwelling device according to claim 1, characterized in that, a one-way frame (11) is clamped in the tubular retention tube (1), and the one-way frame (11) A valve (13) is connected to the upper symmetrical rotation, and the valve (13) is driven to turn over and block the one-way frame (11). 3. The indwelling device for animal cerebral hemorrhage suction model according to claim 2, characterized in that, a limit block (12) is set on the one-way frame (11), and the valve (13) is driven to fit The limit block (12). 4. The indwelling device for aspiration model of animal cerebral hemorrhage according to claim 1, characterized in that, the first end of the tubular retention cylinder (1) is provided with an elastic sheet (2). 5. The indwelling device for animal cerebral hemorrhage suction model according to claim 4, characterized in that, an annular groove (21) is opened on the said fitting elastic sheet (2), and an annular groove (21) is provided on the said annular groove (21). A protective cover (22) is clamped. 6. The indwelling device for animal cerebral hemorrhage suction model according to claim 1, characterized in that, the tubular retention cylinder (1) is a silicone cylinder. 7. The indwelling device for animal cerebral hemorrhage suction model according to claim 4, characterized in that, the elastic sheet (2) is a silicone sheet. 8. The indwelling device for animal cerebral hemorrhage suction model according to claim 1, characterized in that, the elastic thorns (43) are metal thorns.

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