Puncture structure and injection assembly

Abstract

The utility model discloses a puncture structure and an injection assembly. The puncture structure comprises a handle and a puncture head, and the puncture head is arranged at one end of the handle. The whole puncture head is of a solid structure. According to the puncture structure and the injection assembly, the puncture head of the solid structure is arranged at one end of the handle, on one hand, the structural strength of the puncture head is improved, and the puncture effect is improved; on the other hand, compared with an existing hollow puncture head, the puncture structure can reduce the radial size of the puncture head so as to be better matched with the radial size of an injection head, and therefore the problems that due to the fact that the radial size of the puncture hole is too large, vitreous humor in the eyeball spontaneously flows out, and the infection risk is aggravated are solved; furthermore, the success rate of an experiment is improved, the puncture head is ensured to have good structural strength, and the puncture reliability is improved; and on the other hand, the production cost of the puncture structure is reduced, the practicability is high, and the machining difficulty of the puncture head is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a puncture structure and an injection assembly. Background Art

[0002] When injecting into the vitreous cavity of a mouse eyeball, before injection, an insulin needle is first used to puncture a channel in the eyeball, and then a Hamilton needle (abbreviated as Hamilton needle) is used for injection. However, when using an insulin needle for puncture injection, in order to prevent cross-infection from causing the failure of the experiment, a new injection assembly is required for each eye puncture, which wastes insulin needles. The radial dimension of the insulin needle is larger than that of the Hamilton needle, resulting in too large a puncture hole, which in turn leads to spontaneous outflow of the vitreous humor in the eyeball and an increased risk of infection, and the failure of the experimental results. The axial dimension of the insulin needle is relatively long, while the mouse eyeball is relatively small, so it is easy to penetrate through the opposite spherical wall of the mouse eyeball during the puncture process, increasing the risk of infection and the probability of experimental result failure. Summary of the Utility Model

[0003] In view of this, an object of the present utility model is to provide a puncture structure and an injection assembly to solve the technical problems of high cost, high risk of infection and high probability of experimental result failure existing in the existing injection assembly.

[0004] In a first aspect, an embodiment of the present utility model provides a puncture structure for puncturing the vitreous cavity. The puncture structure includes a handle and a puncture head, the puncture head is arranged at one end of the handle, and the puncture head is configured as a solid structure as a whole.

[0005] In combination with the first aspect, in a possible implementation manner, a spike structure is arranged at the end of the puncture head facing away from the handle.

[0006] In combination with the first aspect, in a possible implementation manner, an inclined surface is arranged at the end of the puncture head facing away from the handle to form the spike structure.

[0007] In combination with the first aspect, in a possible implementation manner, the exposed axial dimension of the puncture head relative to the handle is greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

[0008] In combination with the first aspect, in a possible implementation manner, the puncture head extends along the central axis of the puncture structure.

[0009] In combination with the first aspect, in a possible implementation manner, the radial dimension of the handle is greater than that of the puncture head, and the handle is configured as a plastic structure.

[0010] In combination with the first aspect, in a possible implementation, the radial dimension of the handle is greater than the radial dimension of the puncture head.

[0011] In a second aspect, an embodiment of the present invention provides an injection assembly, including an injection structure and the puncture structure as described above, and the injection structure and the puncture structure are independently arranged.

[0012] In combination with the second aspect, in a possible implementation, the injection structure includes an injection syringe, a piston rod, and an injection head. The injection head is disposed at one end of the injection syringe, the piston rod is movably disposed in the injection syringe, and the radial dimension of the puncture head of the puncture structure is the same as the radial dimension of the injection head.

[0013] The puncture structure and the injection assembly provided by the embodiments of the present invention are based on the puncture head with a solid structure disposed at one end of the handle. On the one hand, the structural strength of the puncture head is increased, and the puncture effect is improved; on the other hand, compared with the existing hollow puncture head, the puncture structure provided by the embodiments of the present invention can reduce the radial dimension of the puncture head to better match the radial dimension of the injection head, thereby avoiding the problem that the radial dimension of the puncture hole is too large, resulting in spontaneous outflow of vitreous humor in the eyeball and increased risk of infection, and further improving the success rate of the experiment. At the same time, it ensures that the puncture head has good structural strength and improves the reliability of puncture; on the other hand, it reduces the production cost of the puncture structure, has strong practicability, and reduces the processing difficulty of the puncture head. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a partial structural schematic diagram of the puncture structure provided by the embodiment of the present invention.

[0016] Figure 2 It is a partial structural schematic diagram of the injection assembly provided by the embodiment of the present invention.

[0017] Main reference numerals: injection assembly - 1000; puncture structure - 100; handle - 10; anti-slip structure - 11; mounting groove - 12; puncture head - 20; spike structure - 21; inclined surface - 22; injection structure - 200; injection syringe - 51; piston rod - 52; injection head - 53; central axis - P; axial direction - X; radial direction - Y; circumferential direction - Z.

[0018] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] It can be understood that the terms in the specification, claims and above-mentioned drawings of the present utility model are only for describing specific embodiments, and are not intended to limit the present utility model. The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. Unless otherwise clearly stated in the context, the singular forms "a" and "the" are also intended to include the plural forms. The term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. In addition, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosed content of the present utility model. The words indicating directions such as up, down, left, and right are only for the positions of the shown structures in the corresponding drawings. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "disposed on..." should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] The subsequent description in the specification is for the preferred embodiments of implementing the present utility model. However, the above description is for the purpose of explaining the general principles of the present utility model and is not intended to limit the scope of the present utility model. The protection scope of the present utility model shall be subject to what is defined by the appended claims.

[0022] Please refer to Figure 1 , Figure 1 which is a partial structural schematic diagram of the puncture structure 100 provided by the embodiment of the present utility model. The puncture structure 100 is used for puncturing the vitreous cavity. The puncture structure 100 includes a handle 10 and a puncture head 20. The puncture head 20 is disposed at one end of the handle 10. The puncture head 20 is configured as a solid structure as a whole.

[0023] The puncture structure 100 provided by the embodiment of the present utility model has a solid puncture head 20 provided at one end of the handle 10. On the one hand, the structural strength of the puncture head 20 is increased, improving the puncture effect; on the other hand, compared with the existing hollow puncture head 20, the puncture structure 100 provided by the embodiment of the present utility model can reduce the radial dimension of the puncture head 20 to better match the radial dimension of the injection head 53, thereby avoiding the problem of spontaneous outflow of vitreous humor in the eyeball and increased risk of infection due to too large a radial dimension of the puncture hole, and further improving the success rate of the experiment. At the same time, it ensures that the puncture head 20 has good structural strength and improves the reliability of puncture; on the other hand, it reduces the production cost of the puncture structure 100, has strong practicability, and reduces the processing difficulty of the puncture head 20.

[0024] It should be noted that Figure 1 The purpose is only to schematically describe the setting manner between the handle 10 and the puncture head 20, and does not specifically limit the connection positions, connection relationships, and specific structures of each component, etc. Figure 1 It is only the structure of the puncture structure 100 schematically shown in the embodiment of the present utility model, and does not constitute a specific limitation on the puncture structure 100. In other embodiments of the present utility model, the puncture structure 100 may include more or fewer components than Figure 1 shown, or combine certain components, or different components. For example, the puncture structure 100 may further include, but is not limited to, an identification structure for characterizing the puncture depth, etc.

[0025] For the sake of accurate description, whenever directions are involved in this article, please uniformly refer to Figure 1 as a reference. The puncture structure 100 has a central axis P. The term "axial direction X" refers to the direction parallel to the central axis P of the puncture structure 100, that is, the puncture direction along the puncture structure 100. The term "radial direction Y" refers to the direction perpendicular to the central axis P of the puncture structure 100, that is, the radius direction along the cross-section of the puncture structure 100. The term "circumferential direction Z" refers to the circumferential direction of the puncture structure 100, that is, the direction around the central axis P of the puncture structure 100. Among them, the axial direction X, the radial direction Y, and the circumferential direction Z together constitute three orthogonal directions of the puncture structure 100. For the sake of convenient description, the up-down and left-right orientations in the present utility model are relative positions, and the present utility model does not make specific limitations. The axial direction X, the radial direction Y, and the circumferential direction Z of the puncture structure 100 can be customized according to the specific structure of the product and the perspective presented in the drawings, and the embodiments of the present utility model do not make specific limitations.

[0026] In a possible implementation, the handle 10 and the puncture head 20 are integrally injection molded, thereby improving the assembly efficiency, connection strength, and connection reliability between the handle 10 and the puncture head 20, and further improving the puncture effect of the puncture structure 100. In another possible implementation, the handle 10 and the puncture head 20 are detachably connected together, thereby facilitating the recycling of the handle 10 and reducing costs. In a possible implementation, other connection methods may also be adopted between the handle 10 and the puncture head 20, such as interference connection, bonding, plugging, or screwing, etc., which are not specifically limited in the present utility model.

[0027] Exemplarily, in this embodiment, one end of the puncture head 20 is embedded in the handle 10, thereby improving the structural strength of the root part where the puncture head 20 is connected to the handle 10. Specifically, an installation groove 12 is provided in the handle 10 along the axial direction X of the puncture structure 100, and one end of the puncture head 20 is arranged in the installation groove 12.

[0028] A spike structure 21 is provided at one end of the puncture head 20 facing away from the handle 10. Thereby, it is convenient for the puncture head 20 to pierce the vitreous cavity of the mouse eye, and the puncture effect of the puncture structure 100 is improved.

[0029] Exemplarily, in this embodiment, an inclined surface 22 is provided at one end of the puncture head 20 facing away from the handle 10 to form the spike structure 21. The inclined surface 22 provided at one end of the puncture head 20 facing away from the handle 10 is sharp, which is conducive to easily piercing into the vitreous cavity. On the other hand, the side wall of the puncture head 20 facing away from the inclined surface 22 can better abut against the mouse eyeball. Therefore, the design of the inclined surface 22 facilitates the puncture head 20 to pierce into the mouse eyeball. The inclined surface 22 can be configured as a flat surface, which is convenient for the processing and forming of the puncture head 20. In a possible implementation, the inclined surface 22 can also be configured as a curved surface, thereby improving the structural strength of the spike structure 21 of the puncture head 20 and improving the puncture reliability.

[0030] In a possible implementation, a conical surface is provided at one end of the puncture head 20 facing away from the handle 10 to form the spike structure 21, thereby improving the overall stress resistance of the puncture head 20.

[0031] In a possible implementation, the axial dimension of the puncture head 20 exposed relative to the handle 10 is greater than or equal to 0.2 mm and less than or equal to 0.3 mm. It can be understood that when the axial dimension of the puncture head 20 exposed relative to the handle 10 is too large, the puncture head 20 is likely to penetrate through the opposite wall of the mouse eyeball, increasing the risk of infection and the failure rate of the experimental results, and the overall structural strength of the puncture head 20 is weak, and it is prone to deformation during the puncture process; when the axial dimension of the puncture head 20 exposed relative to the handle 10 is too small, the overall structural strength of the puncture head 20 is strong, and the puncture head 20 fails to penetrate into the vitreous cavity. Therefore, in the embodiment of the present utility model, by designing the axial dimension of the puncture head 20 exposed relative to the handle 10 to be greater than or equal to 0.2 mm and less than or equal to 0.3 mm, on the one hand, it realizes that the axial length of the puncture head 20 exposed outside the handle 10 is roughly adapted to the thickness of the mouse eyeball wall, ensuring that the puncture head 20 can puncture the eyeball wall and enter the vitreous cavity; on the other hand, the puncture head 20 has good structural strength, improving the reliability and stability of the puncture. The axial dimension of the puncture head 20 exposed relative to the handle 10 is, for example, but not limited to, 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm or 0.3 mm, etc. It should be noted that the size of the puncture head 20 can be designed according to the actual situation, and the embodiment of the present utility model does not make specific limitations.

[0032] The length of the handle 10 can be, for example, but not limited to, 5 cm - 15 cm, so as to facilitate the user's grip and improve the user experience. The length of the handle 10 is, for example, but not limited to, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, 11 cm, 12 cm, 13 cm, 14 cm or 15 cm, etc. It should be noted that the length of the handle 10 can be designed according to the actual situation, and the embodiment of the present utility model does not make specific limitations. In a possible implementation, a hand ring can also be provided on the side wall of the handle 10, so as to facilitate the user's grip and avoid the problem of the puncture site shifting due to slipping when using the handle 10.

[0033] The puncture head 20 extends along the central axis P of the puncture structure 100, that is, the puncture head 20 is configured as a linear structure. For example, in this embodiment, the central axis P of the puncture structure 100 passes through the puncture head 20, and the puncture head 20 is coaxially arranged with the handle 10. Therefore, on the one hand, it is convenient for the processing and forming of the puncture head 20; on the other hand, it avoids the puncture head 20 being bent and shifting during the puncture process and damaging other tissues of the mouse eyeball, improving the puncture reliability of the puncture structure 100. In a possible implementation, the puncture head 20 is eccentrically arranged with the handle 10. The puncture head 20 is configured as a cylindrical structure.

[0034] The radial dimension of the handle 10 is larger than that of the puncture head 20. Thus, the design of the radial dimension of the handle 10 can match the usage habits of users, making it more comfortable to use. At the same time, the puncture structure 100 can be held more firmly to avoid dropping, improving the reliability and stability of puncture. Exemplarily, in this embodiment, the handle 10 is configured as a cylindrical structure. The puncture head 20 extends along the central axis P of the handle 10, that is, the handle 10 protrudes relative to the puncture head 20 in the radial direction Y of the handle 10.

[0035] In a possible implementation, the handle 10 can also be configured as an L-shaped structure, a T-shaped structure, a mushroom-shaped structure, etc. For example, the handle 10 is provided with a protrusion along the radial direction Y of the puncture structure 100, so as to facilitate pulling out the puncture structure 100 from the vitreous cavity of a mouse. The number of protrusions can include one or more. For example, the protrusion can extend along the circumferential direction Z of the puncture structure 100. For another example, multiple protrusions can be arranged at intervals along the circumferential direction Z of the puncture structure 100.

[0036] Exemplarily, in this embodiment, the handle 10 is configured as a plastic handle 10. Thus, based on configuring the handle 10 as a plastic handle 10, on the one hand, the production cost of the puncture structure 100 is reduced; on the other hand, it is convenient for the plastic handle 10 and the puncture head 20 to be integrally injection-molded, reducing the processing difficulty of the puncture structure 100. In a possible implementation, the handle 10 can also be configured as a wooden handle 10 or a metal handle 10, etc., but not limited thereto.

[0037] In a possible implementation, an anti-slip structure 11 is provided on the outer sidewall of the handle 10. The anti-slip structure 11 can be configured as, but not limited to, a convex and / or concave structure, so as to avoid the problem that the puncture site is offset due to slipping when using the handle 10. For example, the anti-slip structure 11 can also be configured as an anti-slip layer provided on the outer sidewall of the handle 10. The material of the anti-slip layer can be a material with a relatively large coefficient of friction. Exemplarily, in this embodiment, the anti-slip structure 11 can extend along the circumferential direction Z of the puncture structure 100. In a possible implementation, the anti-slip structure 11 can also extend along the axial direction X of the puncture structure 100.

[0038] Please refer to Figure 1 and Figure 2 , Figure 2It is a partial structural schematic diagram of the injection assembly 1000 provided by the embodiments of the present utility model. The embodiments of the present utility model also provide an injection assembly 1000, which includes a puncture structure 100 and an injection structure 200. The puncture structure 100 is used to puncture the vitreous cavity, and the injection structure 200 is independently arranged relative to the puncture structure 100. Thus, based on the independent arrangement of the injection structure 200 and the puncture structure 100, that is, first using the puncture structure 100 to puncture the vitreous cavity to form a puncture hole, and then withdrawing the puncture structure 100 and using the injection structure 200 to pass through the puncture hole to directly inject the injection liquid into the vitreous cavity, thereby avoiding the phenomenon of injection port blockage during the puncture process when directly using the injection structure to puncture or the integrated structure of the injection structure 200 and the puncture structure 100, improving the injection effect and injection precision control of the injection structure 200, and improving the success rate of the experiment. In addition, by using the above-mentioned puncture structure 100, based on the puncture head 20 with a solid structure provided at one end of the handle 10, on the one hand, the structural strength of the puncture head 20 is increased, improving the puncture effect; on the other hand, compared with the existing hollow puncture head 20, the puncture structure 100 provided by the embodiments of the present utility model can reduce the radial size of the puncture head 20 to better match the radial size of the injection head 53, thereby avoiding the problem of spontaneous outflow of the vitreous humor in the eyeball and increased risk of infection due to too large a radial size of the puncture hole, further improving the success rate of the experiment, while ensuring that the puncture head 20 has good structural strength and improving the reliability of the puncture; on the third hand, the production cost of the puncture structure 100 is reduced, with strong practicability, and the processing difficulty of the puncture head 20 is reduced.

[0039] In this embodiment, the injection structure 200 includes an injection syringe 51, a piston rod 52, and an injection head 53. The injection head 53 is arranged at one end of the injection syringe 51, and the piston rod 52 is movably arranged in the injection syringe 51. The radial size of the puncture head 20 of the puncture structure 100 is the same as the radial size of the injection head 53. Thus, the radial size of the injection head 53 is adapted to the radial size of the puncture hole, thereby avoiding the risk of increased risk of infection caused by spontaneous outflow of the vitreous humor in the eyeball, and further improving the success rate of the experiment. The radial size of the injection head 53 is 0.2 mm - 0.8 mm. The radial size of the injection head 53 can be, but is not limited to, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, or 0.8 mm, etc.

[0040] In this embodiment, the puncture structure 100 is replaceable and can be a disposable part of the injection assembly 1000. Thus, after the puncture structure 100 completes the puncture, it can be discarded. On the one hand, this prevents the risk of cross-infection caused by repeated use of the puncture structure 100, which may lead to the failure of the experiment. On the other hand, the structure of the puncture structure 100 is simple, and the processing difficulty is reduced, thereby reducing the production cost of the puncture structure 100 and enhancing its practicability. In a possible implementation, the puncture structure 100 can be cleaned and disinfected after the puncture; or, the handle 10 can be recycled to achieve the reusable of the puncture structure 100 and further reduce the usage cost. The injection structure 200 can be a long-term usable part of the injection assembly 1000, that is, a fixed part, thereby increasing the usage cost of the injection structure 200 and improving the environmental protection of the injection structure 200. In a possible implementation, the injection structure 200 can also be a disposable part of the injection assembly 1000.

[0041] The embodiments of the present utility model have been introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation manners of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A puncture structure for puncturing a vitreous cavity, characterized in that: The puncture structure comprises: handle; The puncture head is arranged at one end of the handle, and the puncture head is configured as a solid structure as a whole.

2. The puncture structure according to claim 1, characterized in that: A spike structure is arranged at one end of the puncture head facing away from the handle.

3. The puncture structure according to claim 2, characterized in that: The puncture head is provided with an inclined surface at one end facing away from the handle to form the spike structure.

4. The puncture structure according to claim 1, characterized in that: The axial dimension of the puncture head exposed relative to the handle is greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

5. The puncture structure according to claim 1, characterized in that: The puncture head is extended along the central axis of the puncture structure.

6. The puncture structure according to claim 1, characterized in that: The radial dimension of the handle is greater than the radial dimension of the puncture head.

7. The puncture structure according to claim 1, characterized in that: The handle is configured as a plastic handle.

8. The puncture structure according to claim 1, characterized in that: The outer side wall of the handle is provided with an anti-slip structure.

9. An injection assembly, characterized in that: It comprises an injection structure and a puncture structure as claimed in any one of claims 1 to 8, wherein the injection structure and the puncture structure are independently arranged.

10. The injection assembly according to claim 9, characterized in that The injection structure comprises an injection syringe, a piston rod and an injection head. The injection head is arranged at one end of the injection syringe. The piston rod is movably arranged in the injection syringe. The radial dimension of the puncture head of the puncture structure is the same as the radial dimension of the injection head.

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