Tear collection device

Abstract

The utility model relates to the technical field of medical detection instruments, and discloses a tear collecting device, which comprises an adsorption main body with a built-in accommodating cavity, one end of the adsorption main body is provided with an opening communicated with the accommodating cavity, and the other end of the adsorption main body is communicated with an adsorption needle tube; the force application body is arranged in the containing cavity in a penetrating mode and abuts against the inner wall of the containing cavity in a sealed mode, and the force application piece is suitable for moving in the length direction of a barrel body of the adsorption body under the action of external force, adjusting the internal pressure of the containing cavity and sucking or discharging external liquid; and the buffer part is arranged in an elastic and water-permeable manner, is correspondingly arranged at a tube opening, back on to the adsorption main body, of the adsorption needle tube, is in limiting connection with the tube opening, and at least partially protrudes out of the tube opening. Therefore, the tube orifice is prevented from being in direct contact with a sampling part, the risk that the sampling part is damaged by structures such as the tube orifice is reduced, and meanwhile, the buffer part is made of a water-permeable material, so that when a user applies force to the force applying main body and generates negative pressure in the accommodating cavity to adsorb external liquid such as tears, the liquid can enter the adsorption needle tube and even the accommodating cavity and is discharged in the same way.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection instruments, and particularly relates to a tear collection device. Background Art

[0002] At present, in order to explore the pathogenesis of diseases or conduct drug screening, researchers usually establish animal models for research. When studying some eye diseases, such as age-related macular degeneration, retinopathy, glaucoma, cataract, vision decline, visual fatigue, etc., researchers need to use tears as the detection samples that the target organs focus on.

[0003] However, it is relatively difficult to obtain tear samples in animal experiments. First, when collecting tears from larger animals, the number of animal samples collected is usually small, and the collection process is greatly affected by human factors, making standardization difficult. Second, when collecting tears from mice with smaller bodies and sufficient sample numbers, their eyeballs are small, making collection difficult and prone to being scratched by the collection device. Content of the Utility Model

[0004] In view of this, the utility model provides a tear collection device to solve the problems of high collection difficulty and easy scratching of animals by the collection device during the collection of animal tears in the prior art.

[0005] In a first aspect, the utility model provides a tear collection device, comprising: an adsorption main body with an accommodation cavity built therein, one end of which is provided with an opening communicating with the accommodation cavity, and the other end is communicatively connected with an adsorption syringe; a force application main body which is inserted into the accommodation cavity and is in sealed contact with the inner wall of the accommodation cavity, and is adapted to move along the length direction of the adsorption main body under the action of an external force, adjust the internal pressure of the accommodation cavity, and suck or discharge external liquid; a buffer part which is elastically permeable to water, is correspondingly arranged at the nozzle of the adsorption syringe facing away from the adsorption main body, is connected with the nozzle in a limiting manner, and at least partially protrudes from the nozzle.

[0006] Beneficial Effects:

[0007] A buffer part made of elastic material is provided at the nozzle of the adsorption syringe, and the buffer part protrudes from the nozzle. With this arrangement, when the experimenter takes a sample, the buffer part at the front end of the nozzle fits the sampling site, preventing the nozzle from directly contacting the sampling site and reducing the risk of damage to the sampling site by the nozzle and other structures. At the same time, the buffer part is made of a water-permeable material, ensuring that when the user applies force to the force-applying body to create negative pressure in the accommodation cavity to adsorb external liquids such as tears, the liquid can enter the adsorption syringe and even the accommodation cavity, and the discharge is the same. Further, the buffer part made of elastic and water-permeable material will undergo compressive deformation when contacting the sampling site, expanding its adsorption area for tears and effectively meeting the sampling needs of small-volume experimental dynamics. Therefore, this arrangement effectively overcomes and solves the problems in the prior art that it is difficult to collect animal tears and animals are easily scratched by the collection device.

[0008] In an alternative embodiment, the tear collection device further includes: a first abutting part, which is arranged at one end of the force-applying body away from the adsorption syringe and protrudes along the circumferential side of the force-applying body, and is adapted to receive external force.

[0009] In an alternative embodiment, the tear collection device further includes: a second abutting part, which is arranged at one end of the adsorption body away from the adsorption syringe and protrudes along the circumferential side of the adsorption body, and the protruding direction of the second abutting part is opposite to that of the first abutting part.

[0010] In an alternative embodiment, at least the adsorption syringe is made transparent.

[0011] In an alternative embodiment, scale marks are correspondingly arranged on the adsorption syringe along the length direction.

[0012] In an alternative embodiment, the tear collection device further includes an anti-slip structure, which is arranged on the outer wall of the adsorption body.

[0013] In an alternative embodiment, the buffer part includes: a buffer body, which is made of elastic and water-permeable material and is correspondingly arranged at the nozzle of the adsorption syringe facing away from the adsorption body and at least partially protrudes from the nozzle; a limiting part, which adhesively connects the buffer body and the nozzle of the adsorption body.

[0014] In an alternative embodiment, the tear collection device further includes: a socket part, which protrudes from one end of the adsorption body facing away from the open end and is communicated with the accommodation cavity, and the socket part is detachably connected to the adsorption syringe. Description of the Drawings

[0015] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Structural schematic diagram of the tear collection device according to an embodiment of the present utility model;

[0017] Figure 2 For Figure 1 Enlarged structural schematic diagram of the adsorption syringe and the buffer part of the tear collection device shown;

[0018] Figure 3 For Figure 1 Structural schematic diagram of the tear collection device in another state in ;

[0019] Explanation of reference numerals:

[0020] 1. Adsorption main body; 11. Accommodation cavity; 13. Second abutting part; 14. Socket part; 2. Adsorption syringe; 3. Force application main body; 31. First abutting part; 4. Buffer part; 41. Buffer main body; 42. Limiting part; 5. Scale mark; 6. Anti-slip structure. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0022] Such as Figures 1 - 3 , in the first aspect, the present utility model provides a tear collection device, including: an adsorption main body 1, a force application main body 3, and a buffer part 4.

[0023] The adsorption main body 1 is arranged in a cylindrical shape, preferably a cylindrical tube, and can also be in the shape of a square tube, etc. An accommodation cavity 11 is arranged inside it. One end of the adsorption main body 1 is provided with an open mouth communicating with the accommodation cavity 11, and the other end is connected with an adsorption syringe 2, and the adsorption syringe 2 communicates with the accommodation cavity 11.

[0024] The force - applying body 3 is inserted into the accommodation cavity 11 and is in sealed contact with the inner wall of the accommodation cavity 11. Specifically, the part of the force - applying body 3 extending into the accommodation cavity 11 is arranged in a shape imitating the corresponding part of the accommodation cavity 11, and its outer wall fits perfectly with the inner wall of the accommodation cavity 11 to avoid gaps for air leakage. In this embodiment, it is approximately cylindrical. The force - applying body 3 can move along the length direction of the barrel of the adsorption body 1 under the action of an external force, adjust the internal pressure of the accommodation cavity 11, and suck or discharge external liquid. In this embodiment, the external force is specifically the experimenter holding, lifting, or pressing to apply the force.

[0025] The buffer part 4 is elastically permeable and is correspondingly arranged at the pipe orifice of the adsorption needle tube 2 facing away from the adsorption body 1, is connected to the pipe orifice with a limit, and at least partially protrudes from the pipe orifice. Preferably, the pipe orifice of the adsorption needle tube 2 is a flat - end setting. As an alternative implementation, it can also be a wide - mouth setting in a trumpet shape.

[0026] An elastic buffer part 4 is arranged at the pipe orifice of the adsorption needle tube 2, and the buffer part 4 protrudes from the pipe orifice. With this setting, when the experimenter takes a sample, the buffer part 4 at the front end of the pipe orifice fits with the sampling part, avoiding the direct contact between the pipe orifice and the sampling part, reducing the risk of the sampling part being damaged by the pipe orifice and other structures. At the same time, the buffer part 4 is made of a water - permeable material, ensuring that when the user applies force to the force - applying body 3 to create negative pressure in the accommodation cavity 11 to adsorb external liquid such as tear fluid, the liquid can enter the adsorption needle tube 2 and even the accommodation cavity 11, and the discharge is the same. Further, the elastic and water - permeable buffer part 4 will undergo compressive deformation when contacting the sampling part, expanding its adsorption area for tear fluid and effectively meeting the sampling needs of small - volume experimental dynamics. Therefore, this setting effectively overcomes the problems in the prior art that the collection of animal tear fluid is difficult and the animal is easily scratched by the collection device.

[0027] The tear - fluid collection device further includes a first abutting part 31.

[0028] The first abutting part 31 is arranged at one end of the force - applying body 3 in the direction away from the adsorption needle tube 2 and protrudes along the circumferential side of the force - applying body 3. In this embodiment, the force - applying body 3 is column - shaped, and the first abutting part 31 protrudes along one radial side of the force - applying body 3 and is suitable for receiving an external force. Further, the first abutting part is stressed on the side facing the adsorption needle tube 2, and the experimenter can apply force to the first abutting part 31 by pushing it open with the thumb.

[0029] Preferably, when the axial length of the force - applying body 3 is less than or equal to the depth of the accommodation cavity 11, the first abutting part 31 can also be used as a limiting part to abut and limit the open end of the accommodation cavity 11 to prevent the entire force - applying body 3 from completely extending into the accommodation cavity 11.

[0030] In addition, the tear - fluid collection device further includes a second abutting part 13.

[0031] The second abutment portion 13 is arranged at one end of the adsorption body 1 away from the adsorption needle tube 2, and is protruded along the circumferential side of the adsorption body 1. In this embodiment, the adsorption body 1 is also arranged in a columnar shape, and the second abutment portion 13 is protruded along one radial side of the adsorption body 1. The setting of the second abutment portion 13 can prevent the user from slipping when holding the adsorption body 1.

[0032] Furthermore, the second abutting portion 13 and the first abutting portion 31 are arranged in different directions. This arrangement can prevent the user from slipping while holding the device, and facilitate the user to use the device with one hand, and prevent the second abutting portion 13 from blocking or interfering with the user's force on the first abutting portion 31 when the user operates the device with one hand.

[0033] Preferably, the adsorption needle tube 2 is transparent. Since some experimental animals are small in size, the single tear collection amount is small when tears are collected. The tears may not be enough to enter the receiving chamber 11. Only driven by negative pressure and capillary action, the tears stay in the adsorption needle tube 2. The transparent adsorption needle tube 2 is more convenient for users to observe.

[0034] As a convertible embodiment, the adsorption body 1 can also be set to be transparent.

[0035] In this embodiment, scale marks 5 are correspondingly arranged on the adsorption needle tube 2 along the length direction, and the specific unit may be μL. As a changeable implementation, when the adsorption body 1 is transparent, the adsorption body 1 may also be provided with scale marks 5 .

[0036] Preferably, the tear collection device further comprises an anti-skid structure 6, which is specifically an anti-skid protrusion or groove, and is arranged on the outer wall of the adsorption body 1, so that it is convenient for the user to grasp and avoid slipping. As a convertible embodiment, the outer wall of the adsorption body 1 can also be set to an anti-skid material, such as frosted, to further avoid slipping.

[0037] The buffer portion 4 includes a buffer body 41 and a limiting portion 42 .

[0038] In this embodiment, the structure of the buffer body 41 is elastic and water-permeable, and its material is cotton, and the specific shape is columnar or ball-shaped, corresponding to the tube mouth of the adsorption needle tube 2 facing away from the adsorption body 1, and at least partially protrudes from the tube mouth. The shape of the part protruding from the tube mouth can be adjusted as needed, and it can also be sponge or other high molecular elastic materials. As a convertible implementation method, the buffer body 41 can be set to a porous elastic structure, such as a porous rubber or silicone material.

[0039] The limiting part 42 is a flexible adhesive strip in this embodiment, which is wound and adhered around the port of the adsorption syringe 2 and extends beyond a part. The inner wall of the extended part is adhesively connected to the buffer body 41. As a changeable implementation manner, the limiting part 42 can also be an adhesive medium, such as glue, for adhesively connecting the buffer body 41 and the inner wall of the pipe orifice of the adsorption body 1.

[0040] In addition, the tear collection device further includes a socket part 14, which is protrudingly arranged at one end of the adsorption body 1 facing away from the open end. Preferably, the socket part 14 is arranged in the middle of this end, and it communicates with the accommodation cavity 11. The socket part 14 is detachably connected to the adsorption syringe 2, and the specific connection manner can be snap connection, screw connection or interference connection, etc.

[0041] Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A tear collection device, characterized in that, Comprising: An adsorption main body (1) with an accommodation cavity (11) built therein. One end of the accommodation cavity (11) is provided with an opening communicating with the accommodation cavity (11), and the other end is communicatively connected with an adsorption syringe needle (2). A force application main body (3) is inserted into the accommodation cavity (11) and is in sealing contact with the inner wall of the accommodation cavity (11). The force application main body (3) is adapted to move along the length direction of the adsorption main body (1) under the action of an external force, adjust the internal pressure of the accommodation cavity (11), and suck or discharge external liquid. A buffer part (4) is elastically permeable and is correspondingly arranged at the nozzle of the adsorption syringe needle (2) facing away from the adsorption main body (1), is connected with the nozzle in a limiting manner, and at least partially protrudes from the nozzle.

2. The tear collection device according to claim 1, characterized in that, Further comprising: A first abutting part (31) is arranged at one end of the force application main body (3) in the direction away from the adsorption syringe needle (2) and protrudes along the circumferential side of the force application main body (3), and is adapted to receive an external force.

3. The tear collection device according to claim 2, wherein, Further comprising: A second abutting part (13) is arranged at one end of the adsorption main body (1) in the direction away from the adsorption syringe needle (2) and protrudes along the circumferential side of the adsorption main body (1). The protruding direction of the second abutting part (13) is opposite to that of the first abutting part (31).

4. The tear collection device according to claim 1, characterized in that, At least the adsorption syringe needle (2) is transparent.

5. The tear collection device according to claim 4, wherein, Scale marks (5) are correspondingly arranged on the adsorption syringe needle (2) along the length direction.

6. The tear collection device according to claim 1, characterized in that, Further comprising an anti-slip structure (6), and the anti-slip structure (6) is arranged on the outer wall of the adsorption main body (1).

7. The tear collection device according to any one of claims 1-6, characterized in that, The buffer part (4) comprises: A buffer main body (41) made of an elastically permeable material and is correspondingly arranged at the nozzle of the adsorption syringe needle (2) facing away from the adsorption main body (1), and at least partially protrudes from the nozzle. A limiting part (42) adhesively connects the buffer main body (41) and the nozzle of the adsorption main body (1).

8. The tear collection device according to any one of claims 1-6, characterized in that, Further comprising: A socket part (14) protrudes from one end of the adsorption main body (1) facing away from the opening and is communicatively connected with the accommodation cavity (11). The socket part (14) is detachably connected with the adsorption syringe needle (2).

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