Simple bridging type arterial cannula for rabbit experiment

Abstract

The utility model relates to the technical field of arterial cannulas, in particular to a simple bridging type arterial cannula for rabbit experiments. Comprising a cannula body which is a universal glue dropper. The extension tube assembly comprises an extension tube and a stainless steel needle, and the tip end of the stainless steel needle is inserted into the wide opening end of the cannula body and connected with the cannula body in a nested mode. The baroreceptor assembly is provided with a connector part, a biological blood pressure sensor and a hose part, the connector part is connected with the rear end connector far away from the stainless steel needle head, and the hose part is provided with a signal wiring end used for being connected with external biological signal collecting and processing system equipment. According to the simple bridging type arterial cannula for the rabbit experiment, the general glue dropper is adopted to replace an existing tube pulling mode, the mode that the tube pulling mode completely depends on experience is abandoned, and material waste caused by tube pulling failure is avoided. And the glue dropper is produced by a machine, is low in cost, easily available in source and available in shopping platforms. The intubation tube part can be replaced at any time during use, which is very simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of arterial cannulae, in particular to a simple bridge-type arterial cannulae for rabbit experiments. Background Art

[0002] In the practical operation process of basic medical courses, rabbits are often used as experimental subjects. The carotid artery cannulation is required in the experiment to measure arterial blood pressure, arterial bloodletting, etc. In the experimental operation, carotid artery cannulation is often the key link to the success of the experiment. There are generally two types of arterial cannulas in use:

[0003] One is the long arterial cannula used in the existing rabbit arterial cannula operating table, the thin end of which is about 2 cm long, and the other end is connected to a 12# needle, which is then connected to a pressure sensor assembly and connected to a biological signal acquisition and processing system device for blood pressure measurement. The disadvantages are: ① After multiple uses, the tip of the cannula is easily deformed and cannot be used any more; ② Once blood coagulation occurs inside, the whole is ruined; ③ The cost is high;

[0004] The other type is the arterial cannula currently used on the simple operating table in the laboratory. It is made by professional laboratory teachers by hot-melting a slightly thicker PET tube and then stretching it to make it thinner. The front end is thin enough to be inserted into the arterial lumen, and the back end is thick enough to connect to a 12# or 16# needle, and then to a pressure sensor. Its disadvantages are: ① the drawing of the arterial cannula is entirely based on experience, with a low success rate and high cost; ② the length of the arterial cannula is limited after drawing, the operating space is small, and it is easy to fall out of the artery. Utility Model Content

[0005] The utility model aims to at least improve one of the technical problems existing in the prior art. To this end, the utility model proposes a simple bridge-type arterial cannula for rabbit experiments.

[0006] According to the first aspect of the present invention, the simplified bridging-type arterial cannula for rabbit experiments comprises:

[0007] A cannula body, wherein the cannula body is a universal glue dropper;

[0008] An extension tube assembly, the extension tube assembly comprising an extension tube and a stainless steel needle, both ends of the extension tube are provided with joints, the stainless steel needle is connected to the extension tube joint, and the tip of the stainless steel needle is inserted into the wide end of the cannula body and nested with the cannula body;

[0009] A pressure sensor assembly, the pressure sensor assembly comprising a joint portion, a biological blood pressure sensor and a hose portion, the joint portion being connected to a rear end joint away from a stainless steel needle, the hose portion being provided with a biological blood pressure sensor, and the hose portion away from the joint portion being provided with a signal terminal for connecting to an external biological signal acquisition and processing system device.

[0010] The simplified bridge-type arterial cannula for rabbit experiments according to the embodiment of the utility model adopts a universal glue dropper to replace the existing tube pulling method, abandoning the method of pulling the tube completely based on experience, which can not only greatly improve the test efficiency and success rate and reduce the risk in the test, but also avoid the waste of materials caused by failed tube pulling. It is easy to use, simple to operate and low in cost.

[0011] In a possible implementation of the first aspect, the cannula body has a tip portion, and the narrow opening diameter of the tip portion is any one of 1 mm, 0.8 mm, and 0.3 mm, which is suitable for experimental subjects of different subjects.

[0012] In a possible implementation manner of the first aspect, a protective cover is provided on the pressure sensor assembly to facilitate clamping and protection during the test.

[0013] According to the simplified bridging arterial cannula for rabbit experiments in the second aspect of the utility model, the extension tube assembly is a disposable intravenous infusion needle, the rear end connector of the disposable intravenous infusion needle can be connected to the connector of the biological blood pressure sensor, and the tip of the needle of the disposable intravenous infusion needle is inserted into the wide mouth end of the cannula body and nested with the cannula body.

[0014] In a possible implementation manner of the second aspect, the tip of the needle is passivated or covered with a protective tube to avoid puncturing the cannula body.

[0015] In a possible implementation manner of the second aspect, the needle is a No. 12 intravenous infusion needle, which has strong versatility and high cost performance.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1It is a structural schematic diagram of a simple bridge-type arterial cannula for rabbit experiments according to an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of another simple bridge-type arterial cannula for rabbit experiments according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the cannula body of an embodiment of the utility model.

[0021] Reference numerals:

[0022] The cannula body 100 , the extension tube assembly 200 , the stainless steel needle 210 , the connector 220 , the needle 230 , the pressure sensor assembly 300 , the connector 310 , and the biological blood pressure sensor 320 . DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The terms "first", "second", "third", etc. in the specification and claims of the present application and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or optionally, steps or units not listed are included, or optionally, other steps or units inherent to these processes, methods, products or devices are included.

[0027] Only the part relevant to the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. When its operation is completed, the process can be terminated, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0028] The terms "component", "module", "system", "unit", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. Units can communicate through local and / or remote processes, for example, based on signals having one or more data packets (e.g., data from a second unit interacting with another unit in a local system, a distributed system, and / or a network. For example, the Internet interacts with other systems via signals).

[0029] Example 1

[0030] See also Figure 1 and Figure 3 As shown, this embodiment provides a simple bridge-type arterial cannula for rabbit experiments, which includes:

[0031] The cannula body 100 is a universal glue dropper;

[0032] An extension tube assembly 200, the extension tube assembly 200 comprises an extension tube and a stainless steel needle 210, the two ends of the extension tube are provided with joints 220, the stainless steel needle 210 is connected to the joints 220, and the tip of the stainless steel needle 210 is inserted into the wide end of the cannula body 100 and is nested and connected with the cannula body 100;

[0033] The pressure sensor assembly 300 comprises a connector portion 310, a biological blood pressure sensor 320 and a hose portion, wherein the connector portion 310 is connected to a connector 220 away from the stainless steel needle 210, the hose portion is provided with the biological blood pressure sensor 320, and the hose portion away from the connector portion 310 is provided with a signal terminal for connecting to an external biological signal acquisition and processing system device.

[0034] It should be noted that the cannula body 100 has a tip portion, and the narrow opening diameter of the tip portion is any one of 1 mm, 0.8 mm, and 0.3 mm, which is suitable for experimental objects of different subjects.

[0035] It should be noted that a protective cover is provided on the pressure sensor assembly 300 to facilitate clamping and protection during the test.

[0036] It should be noted that the universal glue dropper includes but is not limited to 502 glue dropper, which is highly compatible with rabbit experiments.

[0037] Example 2

[0038] See also Figure 2 As shown, this embodiment provides a simple bridge-type arterial cannula for rabbit experiments on the basis of Embodiment 1, wherein the extension tube assembly 200 is a disposable intravenous infusion needle, the rear end connector of the disposable intravenous infusion needle is connected to the connector part 310, and the tip of the needle 230 of the disposable intravenous infusion needle is inserted into the wide end of the cannula body 100 and is nested and connected with the cannula body 100.

[0039] It should be noted that the tip of the needle 230 is passivated or covered with a protective tube to avoid puncturing the cannula body 100 .

[0040] It should be noted that the needle 230 is a No. 12 intravenous infusion needle, which is highly versatile and cost-effective.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A simple bridge-type arterial cannula for rabbit experiments, characterized in that: include: A cannula body (100), wherein the cannula body (100) is a universal glue dropper; An extension tube assembly (200), the extension tube assembly (200) comprising an extension tube and a stainless steel needle (210), both ends of the extension tube having joints (220), the stainless steel needle (210) being connected to the joints (220), the tip of the stainless steel needle (210) being inserted into the wide end of the cannula body (100) and being nested and connected to the cannula body (100); A pressure sensor assembly (300), the pressure sensor assembly (300) comprising a joint portion (310), a biological blood pressure sensor (320) and a hose portion, the joint portion (310) being connected to a joint (220) away from a stainless steel needle (210), the hose portion being provided with a biological blood pressure sensor (320), and the hose portion away from the joint portion (310) being provided with a signal terminal for connecting to an external biological signal acquisition and processing system device.

2. The simplified bridging arterial cannula for rabbit experiments according to claim 1, characterized in that: The extension tube assembly (200) is a disposable intravenous infusion needle, the rear end connector of the disposable intravenous infusion needle is connected to the connector portion (310), and the tip of the needle head (230) of the disposable intravenous infusion needle is inserted into the wide end of the cannula body (100) and is nested and connected to the cannula body (100).

3. The simplified bridging arterial cannula for rabbit experiments according to claim 1, characterized in that: The cannula body (100) has a tip portion, and the narrow opening diameter of the tip portion is any one of 1 mm, 0.8 mm, and 0.3 mm.

4. The simplified bridge-type arterial cannula for rabbit experiments according to claim 3, characterized in that: The tip of the needle (230) is sheathed with a protective tube to avoid puncturing the cannula body (100).

5. The simplified bridging arterial cannula for rabbit experiments according to claim 4, characterized in that: The needle (230) is a 12-gauge intravenous infusion needle.

6. The simplified bridging arterial cannula for rabbit experiments according to claim 1, characterized in that: The pressure sensor assembly (300) is provided with a protective cover.

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