CN205866757U - Negative pressure sucker type blood sample automatic collector - Google Patents

Abstract

The utility model discloses a negative pressure sucker type blood sample automatic collector, which belongs to the technical field of medical equipment, and comprises a needle head assembly and a connecting pipe, the upper end of the connecting pipe is provided with a connecting seat; the connecting seat is provided with a collecting box; the collecting box is hollow The cylindrical structure has a suction cup on its upper end; a crowbar is arranged inside the suction cup; a gasket is arranged at the bottom of the crowbar; the gasket is arranged in the collection box, and a sealing end panel is arranged at the bottom; On the inner wall, a through hole is provided under the sealing pad; a spring support is provided at the lower end of the sealing end panel; a spring is connected between the spring support and the sealing pad; through holes are evenly arranged on the spring support; A negative pressure chamber is provided; a flexible sealing ring is connected between the lower end of the suction cup and the upper end of the collection box. The purpose of the utility model is to provide a negative pressure sucker type automatic blood sample collector, which can quickly, conveniently and largely collect orbital blood samples through the principle of negative pressure.

Description

A negative pressure sucker type automatic blood sample collector

technical field

The utility model belongs to the technical field of medical equipment, in particular to a negative pressure sucker type automatic blood sample collector.

Background technique

Mice are a common source of animal models. Orbital blood sampling is a common method for collecting blood samples in mice. After removing the eyeballs, the mice are turned upside down, and the blood is dripped into the collection tube by gravity, squeezing the abdominal cavity, and other methods. Due to the lack of specialized blood collection devices and different personal techniques in the above process, the blood volume collected varies greatly, usually less than 1 ml, which cannot meet the blood volume requirements for multiple index detection. How to collect mouse orbital blood samples quickly, conveniently and to a large extent is an urgent problem to be solved by those skilled in the art.

Utility model content

The purpose of this utility model is to solve the above problems, to provide a negative pressure sucker-type automatic blood sample collector, which can fully fit the eye through the suction cup, and use the principle of negative pressure to collect orbital blood samples quickly, conveniently and to a large extent.

In order to achieve the above purpose, the technical solution adopted by the utility model is: it includes a needle assembly (1) and a connecting tube (2), the needle assembly (1) is provided with a needle sheath (15), and the connecting tube (2) The upper end is provided with a connection seat (3); the connection seat (3) is provided with a collection box (7); the collection box (7) is a hollow cylindrical structure, and its upper end is provided with a suction cup (11); The suction cup (11) is provided with a pry bar (10); the bottom of the pry bar (10) is provided with a gasket (9); the gasket (9) is arranged in the collection box (7), and the bottom is provided with a sealing The end panel (6); the sealing end panel (6) is arranged on the inner wall of the collection box (7), and a through hole is arranged under the sealing pad (9); the distance between the lower ends of the sealing end panel (6) is set to A spring support (5); a spring (8) is connected between the spring support (5) and the gasket (9); through holes are uniformly arranged on the spring support (5); the spring support (5) A negative pressure chamber (4) is provided below; a flexible sealing ring (13) is connected between the lower end of the suction cup (11) and the upper end of the collection box (7); the top of the suction cup (11) shown is provided with a suction cup sheath (16).

Further, the suction cup (11) includes a suction cup body (1104) and a fitting section (1103); the suction cup body (1104) is a conical shell structure.

Further, a crowbar fixing groove (1102) is arranged inside the suction cup main body (1104); a crowbar movable groove (1101) is arranged at the upper end of the crowbar fixing groove (1102).

Further, the crowbar (10) includes a vertical section (1003) and an inclined section (1002); the vertical section (1003) is provided with a tip (1004) at the bottom of the vertical section (1003); The tip of the inclined section (1001) of the rod body is arranged on the top of the inclined section (1002).

Further, the gasket (9) includes a gasket body (901) and a gasket connection block (902); the gasket body (901) and the gasket connection block (902) are respectively coaxial cylinders structure; the upper end of the gasket connection block (902) is provided with a crowbar connection seat (903); the crowbar connection seat (903) is provided with a waist hole (904); the crowbar connection seat (903) The number is two; the two pry bar connecting seats (903) are symmetrically arranged according to the central axis of the gasket connecting block (902).

Further, the number of the crowbar (10) is two; the lower end of the vertical section of the rod body (1003) is set in the waist hole (904); The bottom of the seat (903); the inclined section of the rod body (1002) is set in the fixed groove of the crowbar (1102); the tip of the inclined section of the rod body (1001) is arranged in the movable groove of the crowbar (1101).

Further, the fitting section (1103) is provided with pins (12); the number of the pins (12) is multiple, and they are all arranged according to the central axis of the fitting section (1103).

Further, the lower end of the fitting section (1103) is provided with a plurality of flexible pin holders (14), the number of which is consistent with the number of pins (12), and the pins (12) are arranged on the flexible pins in the seat (14).

Further, the diameters of the vertical section (1003) and the inclined section (1002) of the rod body are less than or equal to 1 mm.

Further, the weight of the sealing gasket (9)≦30g.

The beneficial effects of the utility model:

1. The sucker is used instead of the existing needle for mouse eye socket blood collection, the blood flows along the sucker, and a larger area of blood can be collected.

2. The collector is a negative pressure structure. When the suction cup is forced to fit the mouse's eye socket, the crowbar will completely open the sealing pad under the pressure, and the blood will be collected quickly under the action of negative pressure. The blood collection volume is large and the blood collection efficiency is high. .

3. When the suction cup is attached to the mouse orbit, use the pin to fix the suction cup on the mouse orbit, which is easy to operate, makes the suction cup have stronger adsorption force, greater negative pressure, and higher blood collection efficiency.

4. It is equipped with a suction cup sheath to effectively prevent the suction cup from being polluted.

Description of drawings

Fig. 1 is a schematic diagram of the main sectional structure of the utility model.

Fig. 2 is a schematic top view of the utility model.

Fig. 3 is a schematic diagram of the main sectional structure of the utility model in the working state of blood collection.

Fig. 4 is a schematic diagram of the main sectional structure of the gasket in the present invention.

Fig. 5 is a schematic top view of the gasket in the present invention.

FIG. 6 is a partial enlarged view A in FIG. 3 .

Fig. 7 is a schematic diagram of the main section structure of the sealing end panel in the present invention.

Fig. 8 is a schematic diagram of the main sectional structure of the suction cup in the present invention.

FIG. 9 is a partial enlarged view B in FIG. 8 .

The text marked in the figure is represented as: 1. Needle assembly; 2. Connecting tube; 3. Connecting seat; 4. Negative pressure chamber; 5. Spring support; 6. Sealing end panel; Box; 8, spring; 9, gasket; 901, gasket main body; 902, gasket connection block; 903, pry bar connection seat; 904, waist hole; 10, pry bar; 1003, the vertical section of the rod body; 1004, the end of the vertical section of the rod body; 11, the suction cup; 1101, the movable groove of the crowbar; 1102, the fixed groove of the crowbar; Pin; 13. Flexible sealing ring; 14. Flexible pin seat; 15. Needle sheath; 16. Suction cup sheath.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings. The description of this part is only exemplary and explanatory, and should not have any influence on the protection scope of the utility model. restrictive effect.

As shown in Figures 1-9, the specific structure of the present invention is as follows: it includes a needle assembly 1 and a connecting tube 2, the needle assembly 1 is provided with a needle sheath 15, and the upper end of the connecting tube 2 is provided with a connecting seat 3; The connecting seat 3 is provided with a collection box 7; the collection box 7 is a hollow cylindrical structure, and its upper end is provided with a suction cup 11; the inside of the suction cup 11 is provided with a crowbar 10; the bottom of the crowbar 10 is provided with Gasket 9; the gasket 9 is arranged in the collection box 7, and the bottom thereof is provided with a sealing end panel 6; the sealing end panel 6 is arranged on the inner wall of the collection box 7, and a through hole is arranged under the gasket 9 The distance between the lower end of the sealing end panel 6 is provided with a spring support 5; a spring 8 is connected between the spring support 5 and the gasket 9; a through hole is uniformly arranged on the spring support 5; the spring support A negative pressure chamber 4 is provided below the seat 5; a flexible sealing ring 13 is connected between the lower end of the suction cup 11 and the upper end of the collection box 7; a suction cup sheath 16 is provided on the top of the suction cup 11 shown.

Preferably, the suction cup 11 includes a suction cup body 1104 and a fitting section 1103; the suction cup body 1104 is a conical shell structure.

Preferably, a crowbar fixing groove 1102 is arranged in the suction cup main body 1104; a crowbar movable groove 1101 is arranged at the upper end of the crowbar fixing groove 1102.

Preferably, the crowbar 10 includes a vertical section 1003 of the rod body and an inclined section 1002 of the rod body; a tip 1004 of the vertical section of the rod body is provided at the bottom of the vertical section 1003 of the rod body; a tip of the inclined section of the rod body is provided at the top of the inclined section 1002 of the rod body 1001.

Preferably, the gasket 9 includes a gasket body 901 and a gasket connection block 902; the gasket body 901 and the gasket connection block 902 are respectively coaxial cylindrical structures; the upper end of the gasket connection block 902 A crowbar connection seat 903 is provided; the crowbar connection seat 903 is provided with a waist hole 904; the number of the crowbar connection seat 903 is two; Central axis symmetrical setting.

Preferably, the number of the crowbar 10 is two; the lower end of the vertical section 1003 of the rod body is arranged in the waist hole 904; the tip 1004 of the vertical section of the rod body is arranged at the bottom of the connecting seat 903 of the crowbar body; the body of the rod body is inclined The segment 1002 is set in the fixed groove 1102 of the crowbar; the tip 1001 of the inclined section of the rod body is set in the movable groove 1101 of the crowbar.

Preferably, pins 12 are provided on the fitting section 1103; the number of pins 12 is multiple, and they are all arranged according to the central axis of the fitting section 1103.

Preferably, the lower end of the fitting section 1103 is provided with a plurality of flexible pin seats 14 , the number of which is consistent with the number of pins 12 , and the pins 12 are arranged in the flexible pin seats 14 .

Preferably, the diameters of the vertical section 1003 of the rod body and the inclined section 1002 of the rod body are ≦1 mm.

Preferably, the weight of the gasket 9 is≦30g.

The negative pressure principle of the blood sampler is shown in Figure 1. First, the blood sampler is vacuumed, the needle assembly is connected to the micro vacuum machine, and the micro vacuum machine is started to pump air. The gasket is under the action of spring tension and negative pressure adsorption. The sealing end panel is completely fitted, and a negative pressure vacuum is formed in the negative pressure chamber and the needle tube;

For specific use, as shown in Figure 3, remove the suction cup sheath, remove the mouse’s eyeball, fit the suction cup to the mouse’s eye, and fix it with a pin. After the pad is opened, the mouse’s eyeballs are removed, and the blood flows down the suction cup, and quickly flows into the collection box and the needle tube under the action of negative pressure; the needle sheath is removed, and the needle assembly is inserted into the negative pressure test tube, and finally all the blood is collected. Test tube collection, to achieve the purpose of rapid mass blood collection.

As mentioned above, the utility model fully fits the eye through the suction cup, and utilizes the principle of negative pressure, so that the orbital blood sample can be collected quickly, conveniently and to a large extent.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or apparatus.

In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention. The above is only a preferred embodiment of the utility model, it should be pointed out that due to the limitation of literal expression, objectively there are infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the utility model Under the premise of the invention, some improvements, modifications or changes can also be made, and the above technical features can also be combined in an appropriate way; these improvements, modifications, or combinations, or the ideas and technical solutions of the utility model can be directly applied without improvement In other occasions, all should be regarded as the protection scope of the present utility model.

Claims (10)

1. A negative pressure sucker type automatic blood sample collector, which includes a needle assembly (1) and a connecting tube (2), the needle assembly (1) is provided with a needle sheath (15), characterized in that the connecting tube (2) The upper end is provided with a connection seat (3); the connection seat (3) is provided with a collection box (7); the collection box (7) is a hollow cylindrical structure, and its upper end is provided with a suction cup (11) ; The suction cup (11) is provided with a crowbar (10); the bottom of the crowbar (10) is provided with a gasket (9); the gasket (9) is arranged in the collection box (7), and its bottom A sealing end panel (6) is provided; the sealing end panel (6) is arranged on the inner wall of the collection box (7), and a through hole is arranged under the sealing pad (9); the lower end of the sealing end panel (6) A spring support (5) is arranged at a distance; a spring (8) is connected between the spring support (5) and the gasket (9); through holes are uniformly arranged on the spring support (5); the A negative pressure chamber (4) is provided under the spring support (5); a flexible sealing ring (13) is connected between the lower end of the suction cup (11) and the upper end of the collection box (7); the top of the suction cup (11) shown is provided with Suction cup sheath (16). 2. A negative pressure sucker-type automatic blood sample collector according to claim 1, characterized in that, the sucker (11) includes a sucker body (1104) and a fitting section (1103); the sucker body (1104 ) is a conical shell structure. 3. A negative pressure sucker-type automatic blood sample collector according to claim 2, characterized in that a crowbar fixing groove (1102) is arranged in the sucker main body (1104); the crowbar fixing groove (1102 ) is provided with a pry bar movable slot (1101) at the upper end. 4. A negative pressure sucker type automatic blood sample collector according to claim 3, characterized in that, the crowbar (10) includes a vertical section (1003) of a rod body and an inclined section (1002) of a rod body; the rod body The bottom of the vertical section (1003) is provided with the tip of the vertical section of the rod body (1004); the top of the inclined section of the rod body (1002) is provided with the tip of the inclined section of the rod body (1001). 5. A negative pressure sucker type automatic blood sample collector according to claim 4, characterized in that, the sealing gasket (9) includes a gasket main body (901) and a gasket connecting block (902); the sealing The pad main body (901) and the gasket connection block (902) are respectively coaxially arranged cylindrical structures; the upper end of the gasket connection block (902) is provided with a crowbar connection seat (903); the crowbar connection seat ( 903) is provided with a waist hole (904); the number of the crowbar connection seats (903) is two; the two crowbar connection seats (903) are symmetrically arranged according to the central axis of the gasket connection block (902). 6. The negative pressure sucker type automatic blood sample collector according to claim 5, characterized in that, the number of the crowbar (10) is two; the lower end of the vertical section (1003) of the rod body is set at the waist hole (904); the end of the vertical section of the rod (1004) is set at the bottom of the crowbar connection seat (903); the inclined section of the rod (1002) is set in the fixing groove (1102) of the crowbar; the rod is inclined The end of the section (1001) is set in the movable groove (1101) of the crowbar. 7. A negative pressure sucker-type automatic blood sample collector according to claim 2, characterized in that, the fitting section (1103) is provided with pins (12); the number of pins (12) There are a plurality of them, and they are all arranged according to the central axis of the fitting segment (1103). 8. A negative pressure sucker type automatic blood sample collector according to claim 7, characterized in that, the lower end of the fitting section (1103) is provided with a plurality of flexible pin holders (14), the number of which is the same as that of pins (12) are in the same quantity, and the pins (12) are arranged in the flexible pin seat (14). 9 . The negative pressure sucker type automatic blood sample collector according to claim 4 , wherein the diameter of the vertical section ( 1003 ) of the rod body and the inclined section ( 1002 ) of the rod body is ≦ 1 mm. 10. The negative pressure sucker type automatic blood sample collector according to claim 3, characterized in that the weight of the sealing gasket (9) is ≦30g.