Micro-injection pump

Abstract

The utility model discloses a micro-injection pump, and relates to the field of medical instruments. Provided is a microinjection pump which has a structure for shielding light from a syringe and which can be housed when the light shielding structure is not in use. The micro-injection pump comprises an injection pump shell and a first light shielding baffle; a U-shaped groove is formed in the lower portion of the front end of the injection pump shell, a first containing cavity is formed in the lower side wall of the U-shaped groove, an abutting end plate located at one end of the U-shaped groove is arranged on the injection pump shell, and an injector groove is formed in the abutting end plate; the first light shielding baffle is folded and inserted into the first storage cavity, the first light shielding baffle comprises a connecting plate, a front baffle and an end baffle, the connecting plate is located at the deep position of the first storage cavity, the front baffle is located in front of the connecting plate and hinged to the connecting plate, the end baffle is hinged to one end of the front baffle and folded to the position above the front baffle, and a first passing notch is formed in the end baffle; during light-proof injection, the front baffle and the end baffle are pulled out to jointly shield the U-shaped groove.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a micro injection pump. Background Art

[0002] The micro-injection pump is a medical device that accurately, minutely, evenly, and continuously pumps liquid medicine into the human body. The micro-injection pump mainly includes a syringe pump housing and a clamping mechanism, a push mechanism, and a control display device installed on the syringe pump housing. The syringe pump housing has a syringe abutment surface. The micro-injection pump is used in conjunction with a syringe. The syringe is installed on the micro-injection pump. The clamping mechanism clamps the syringe barrel, and the syringe barrel abuts against the syringe abutment surface. The clamping mechanism and the syringe abutment surface jointly restrict the movement of the syringe barrel; the push mechanism slowly pushes the piston rod and piston of the syringe, and the piston slowly moves forward to slowly push out the liquid medicine in the syringe barrel to achieve micro-injection.

[0003] Microinjection pumps are often used for the injection of some drugs that need to be protected from light. Common microinjection pumps do not have light-shielding settings, and syringes need to use light-shielding syringes. Light-shielding syringes are more expensive than ordinary syringes, which will increase the injection cost to a certain extent. If the microinjection pump can shield ordinary syringes from light, then ordinary syringes can be used for microinjections of drugs that need to be protected from light, which will help reduce injection costs.

[0004] After searching, some patents disclosed microinjection pumps that can shield the syringe from light, such as patents with application numbers 202120266680.7 and 201621446452.3. The above patents are all equipped with a switchable cover to shield the syringe. Although the syringe is shielded from light, it is also necessary to open the cover for ordinary injections, and then cover the cover after the syringe is inserted. This not only increases the operating steps of ordinary injections, but the obstruction of the cover also affects the observation of the syringe. If the cover is not covered, the cover will take up extra space when opened, making the microinjection pump more likely to be touched. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a micro-injection pump which can have a structure for shielding a syringe and can be stored when the shielding structure is not in use.

[0006] The technical solution adopted to solve the above problems is: the micro-injection pump comprises an injection pump housing and a clamping mechanism; and also comprises a first light-shielding baffle;

[0007] The front lower part of the syringe pump housing has a U-shaped groove, the lower side wall of the U-shaped groove has a first receiving cavity, the syringe pump housing has an abutting end plate located at one end of the U-shaped groove, the abutting end plate has a syringe groove, the clamping mechanism is installed on the syringe pump housing, and the part of the clamping mechanism exposed from the syringe pump housing is located in the U-shaped groove;

[0008] The first light-shielding baffle is folded and inserted into the first storage cavity. The first light-shielding baffle comprises a connecting plate, a front baffle and an end baffle. The connecting plate is located deep in the first storage cavity. The front baffle is located in front of the connecting plate and is hinged to the connecting plate. The end baffle is hinged to one end of the front baffle and folded to the top of the front baffle. The end baffle has a first passing notch.

[0009] When injecting to avoid light, the front baffle and the end baffle are pulled out, the front baffle is located in front of the U-shaped groove and fits against the end plate, the end baffle is located outside the end of the U-shaped groove away from the end plate, the front baffle and the end baffle jointly cover the U-shaped groove, and the first notch faces the bottom surface of the U-shaped groove.

[0010] Furthermore, the front baffle and the end baffle are made of light-proof plastic.

[0011] Another technical solution adopted to solve the above problem is: the micro-injection pump includes an injection pump housing and a clamping mechanism; and also includes a first light-shielding baffle and a second light-shielding baffle;

[0012] The front lower part of the syringe pump housing has a U-shaped groove, the lower side wall of the U-shaped groove has a first receiving cavity, the syringe pump housing has an abutting end plate located at one end of the U-shaped groove and a second receiving cavity located at the other end of the U-shaped groove, the abutting end plate has a syringe groove, the clamping mechanism is installed on the syringe pump housing, and the part of the clamping mechanism exposed from the syringe pump housing is located in the U-shaped groove;

[0013] The first light-shielding baffle is inserted into the first receiving cavity, the first light-shielding baffle comprises a connecting plate and a front baffle, the connecting plate is located deep in the first receiving cavity, the front baffle is located in front of the connecting plate and is hinged to the connecting plate; the second light-shielding baffle is inserted into the second receiving cavity, the front end of the second light-shielding baffle has a second passing notch;

[0014] During light-shielding injection, the front baffle is pulled out, located in front of the U-shaped groove and abutting against the end plate, the second light-shielding baffle is pulled out to abut against the front baffle, and the front baffle and the second light-shielding baffle jointly shield the U-shaped groove.

[0015] Furthermore, the front baffle plate and the second light-proof baffle plate are made of light-proof plastic.

[0016] Another technical solution adopted to solve the above problem is: the micro-injection pump includes an injection pump housing and a clamping mechanism; and also includes a first light-shielding baffle;

[0017] The front lower part of the syringe pump housing has a U-shaped groove, the lower side wall of the U-shaped groove has a first receiving cavity, the syringe pump housing has an abutting end plate located at one end of the U-shaped groove and a shielding end plate located at the other end of the U-shaped groove, the abutting end plate has a syringe groove, the front end of the shielding end plate has a third through notch, when the syringe is installed, the third through notch is directly opposite to the center of the syringe, the clamping mechanism is installed on the syringe pump housing, and the part of the clamping mechanism exposed from the syringe pump housing is located in the U-shaped groove;

[0018] The first light-shielding baffle is folded and inserted into the first storage cavity, and the first light-shielding baffle comprises a connecting plate, a front baffle and an end baffle, wherein the connecting plate is located deep in the first storage cavity, the front baffle is located in front of the connecting plate and is hinged to the connecting plate, and the end baffle is hinged to one end of the front baffle and is folded above the front baffle;

[0019] During light-shielding injection, the front baffle and the end baffle are pulled out, the front baffle is located in front of the U-shaped groove and fits against the end plate, the rear end of the end baffle fits against the front end of the shielding end plate, and the front baffle and the end baffle jointly shield the U-shaped groove.

[0020] Furthermore, the front baffle and the end baffle are made of light-proof plastic.

[0021] The beneficial effect of the utility model is that the three technical solutions of the utility model are all provided with baffles (first light-shielding baffle and second light-shielding baffle) for shielding the syringe from light. Figure 3 , Figure 4 , Fig. 9 and Fig.12 As shown, when light-shielded injection is required, the baffle for shielding the syringe can be pulled out and unfolded to shield the U-shaped groove, thereby shielding the syringe fixed in the U-shaped groove, thereby achieving light shielding. In this way, ordinary syringes can be used for light-shielded injection, which is less expensive.

[0022] The baffles for shading the syringe can be stored in the storage chamber (first storage chamber, second storage chamber) provided on the injection pump housing. The baffles do not block the U-shaped groove and do not increase the space occupied by the microinjection pump. During normal injection, no operation of the baffle is required, the operation steps during normal injection are not increased, and the observation of the syringe is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the front view of the first microinjection pump (normal state);

[0024] Figure 2 This is the left view of the first micro-injection pump (normal state);

[0025] Figure 3 This is the front view of the first microinjection pump (light-proof state);

[0026] Figure 4 This is the left view of the first microinjection pump (light-proof state);

[0027] Figure 5 is a diagram of the first light-shielding baffle in a folded and stored state;

[0028] Figure 6 is a diagram of the first light-shielding baffle in an unfolded light-shielding state;

[0029] Figure 7 This is the main view of the second microinjection pump (normal state);

[0030] Figure 8 This is the left view of the second type of microinjection pump (normal state);

[0031] Fig. 9 This is the left view of the second microinjection pump (light-proof state);

[0032] Fig.10 This is the main view of the third type of microinjection pump (normal state);

[0033] Fig.11 This is the left view of the third type of microinjection pump (normal state);

[0034] Fig.12 This is the left view of the third type of microinjection pump (light-proof state);

[0035] Marked in the figure are: injection pump housing 1, U-shaped groove 11, first receiving chamber 12, abutting end plate 13, syringe groove 14, second receiving chamber 15, shielding end plate 16, third passing gap 17, first light-proof baffle 2, connecting plate 21, front baffle 22, end baffle 23, first passing gap 231, second light-proof baffle 3, second passing gap 31, clamping mechanism 4, injection mechanism 5, syringe 6. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figures 1 to 6As shown, the first micro-injection pump of the utility model includes an injection pump housing 1 and a clamping mechanism 4; it also includes a first light-shielding baffle 2; the front lower part of the injection pump housing 1 has a U-shaped groove 11, and the lower side wall of the U-shaped groove 11 has a first receiving cavity 12, the injection pump housing 1 has an abutting end plate 13 located at one end of the U-shaped groove 11, and the abutting end plate 13 has a syringe groove 14, the clamping mechanism 4 is installed on the injection pump housing 1, and the part of the clamping mechanism 4 exposed from the injection pump housing 1 is located in the U-shaped groove 11; the first light-shielding baffle 2 is folded and inserted into the first receiving cavity 12, and the first light-shielding baffle 2 includes a connecting plate 21, a front baffle 22 and an end baffle 13. The baffle 23 and the connecting plate 21 are located deep in the first storage cavity 12, the front baffle 22 is located in front of the connecting plate 21 and is hinged to the connecting plate 21, the end baffle 23 is hinged to one end of the front baffle 22 and is folded to the top of the front baffle 22, and the end baffle 23 has a first passing notch 231; when injecting to avoid light, the front baffle 22 and the end baffle 23 are pulled out, the front baffle 22 is located in front of the U-shaped groove 11 and fits against the end plate 13, the end baffle 23 is located outside the U-shaped groove 11 away from one end of the end plate 13, the front baffle 22 and the end baffle 23 jointly block the U-shaped groove 11, and the first passing notch 231 faces the bottom surface of the U-shaped groove 11.

[0038] The first micro-injection pump mainly improves the structure and shape of the injection pump housing 1, the part of the clamping mechanism 4 exposed from the injection pump housing 1 is located in the U-shaped groove 11, and a first light-shielding baffle 2 is added. Other structures of the micro-injection pump, such as the structure of the clamping mechanism 4, the structure of the injection mechanism 5 and other control and display devices are the same as those in the prior art.

[0039] When the microinjection pump is used, the syringe 6 is placed in the syringe slot 14 and the clamping mechanism 4, the clamping mechanism 4 clamps the syringe 6, the convex piece at the rear end of the syringe abuts against the abutting end plate 13, and the clamping mechanism 4 and the abutting end plate 13 jointly restrict the movement of the syringe. The push mechanism 5 abuts against the piston rod of the syringe 6.

[0040] During normal injection, Figure 1 , Figure 2 and Figure 5 As shown, the first light-shielding baffle 2 remains in a stored state and does not need to be used, that is, the first light-shielding baffle 2 is folded and inserted into the first storage cavity 12, and the first light-shielding baffle 2 includes a connecting plate 21, a front baffle 22 and an end baffle 23. The connecting plate 21 is located deep in the first storage cavity 12, the front baffle 22 is located in front of the connecting plate 21 and is hinged to the connecting plate 21, and the end baffle 23 is hinged to one end of the front baffle 22 and is folded above the front baffle 22.

[0041] When injecting, avoid light. Figure 3 , Figure 4 and Figure 6As shown, the front baffle 22 and the end baffle 23 are pulled out, the front baffle 22 is located in front of the U-shaped groove 11 and fits against the end plate 13, the end baffle 23 is located outside the end of the U-shaped groove 11 away from the end plate 13, the front baffle 22 and the end baffle 23 jointly shield the U-shaped groove 11, and the first through-notch 231 faces the bottom surface of the U-shaped groove 11. The shielding of the wall surface of the U-shaped groove 11, the end plate 13, the front baffle 22 and the end baffle 23 makes the syringe 6 in a light-proof state, so that an ordinary syringe can be used for light-proof injection, which is more cost-effective. The first through-notch 231 is used for the liquid conduit connected to the syringe 6 to pass through.

[0042] like Figure 2 As shown, when the first light-shielding baffle 2 is stored in the first receiving cavity 12, its front end can be slightly exposed from the first receiving cavity 12, so as to pull out the first light-shielding baffle 2. During light-shielding injection, the front baffle 22 and the end baffle 23 should be attached to and connected with the injection pump housing 1, and magnets or other existing snap-fit ​​structures can be used to connect the front baffle 22 and the end baffle 23 with the injection pump housing 1.

[0043] The connecting plate 21 can be made of ordinary plastic, and the front baffle 22 and the end baffle 23 are preferably made of light-proof plastic, so that the front baffle 22 and the end baffle 23 are translucent, which can be light-proof and the syringe 6 can be observed through the two.

[0044] like Figures 7 to 9 As shown, the second micro-injection pump of the utility model comprises an injection pump housing 1 and a clamping mechanism 4; it also comprises a first light-shielding baffle 2 and a second light-shielding baffle 3; the front lower part of the injection pump housing 1 has a U-shaped groove 11, the lower side wall of the U-shaped groove 11 has a first receiving chamber 12, the injection pump housing 1 has an abutting end plate 13 located at one end of the U-shaped groove 11 and a second receiving chamber 15 located at the other end of the U-shaped groove 11, the abutting end plate 13 has a syringe groove 14, the clamping mechanism 4 is installed on the injection pump housing 1, and the part of the clamping mechanism 4 exposed from the injection pump housing 1 is located in the U-shaped groove 11; the first light-shielding baffle 2 and the second light-shielding baffle 3 are provided; the injection pump housing 1 has a U-shaped groove 11, and the first light-shielding baffle 12 is provided on the lower side wall of the U-shaped groove 11; the injection pump housing 1 has abutting end plate 13 located at one end of the U-shaped groove 11 and a second receiving chamber 15 located at the other end of the U-shaped groove 11; the abutting end plate 13 has a syringe groove 14, the clamping mechanism 4 is installed on the injection pump housing 1, and the part of the clamping mechanism 4 exposed from the injection pump housing 1 is located in the U-shaped groove 11; the first light-shielding baffle 2 and the second light-shielding baffle 3 are provided on the lower side wall of the U-shaped groove 11; the injection pump housing 1 has a U-shaped groove 11, and the first light-shielding baffle 2 and the second light-shielding baffle 3 are provided on the lower side wall of the U-shaped groove 11; the injection pump housing 1 has abutting end plate The light baffle 2 is inserted into the first storage cavity 12, and the first light-shielding baffle 2 includes a connecting plate 21 and a front baffle 22. The connecting plate 21 is located deep in the first storage cavity 12, and the front baffle 22 is located in front of the connecting plate 21 and is hinged to the connecting plate 21; the second light-shielding baffle 3 is inserted into the second storage cavity 15, and the front end of the second light-shielding baffle 3 has a second through-notch 31; during light-shielding injection, the front baffle 22 is pulled out, the front baffle 22 is located in front of the U-shaped groove 11 and fits against the end plate 13, the second light-shielding baffle 3 is pulled out until it fits with the front baffle 22, and the front baffle 22 and the second light-shielding baffle 3 jointly block the U-shaped groove 11.

[0045] The difference between the second microinjection pump and the first one is that the second light-shielding baffle 3 is used to replace the end baffle 23 to shield the U-shaped groove 11. The front baffle 22 and the second light-shielding baffle 3 are preferably made of light-shielding plastic. The second through-notch 231 is used for the liquid conduit connected to the syringe 6 to pass through.

[0046] like Figures 10 to 12 As shown, the third micro-injection pump of the utility model includes an injection pump housing 1 and a clamping mechanism 4; it also includes a first light-shielding baffle 2; the front end lower part of the injection pump housing 1 has a U-shaped groove 11, and the lower side wall of the U-shaped groove 11 has a first receiving cavity 12, the injection pump housing 1 has an abutting end plate 13 located at one end of the U-shaped groove 11 and a shielding end plate 16 located at the other end of the U-shaped groove 11, the abutting end plate 13 has a syringe groove 14, and the front end of the shielding end plate 16 has a third through-notch 17, when the syringe 6 is installed, the third through-notch 17 is directly opposite to the center of the syringe 6, and the clamping mechanism 4 is installed on the injection pump housing 1, and the clamping mechanism 4 is exposed from the injection pump housing 1 The first light-shielding baffle 2 is folded and inserted into the first receiving cavity 12, and the first light-shielding baffle 2 comprises a connecting plate 21, a front baffle 22 and an end baffle 23. The connecting plate 21 is located deep in the first receiving cavity 12, the front baffle 22 is located in front of the connecting plate 21 and is hinged to the connecting plate 21, and the end baffle 23 is hinged to one end of the front baffle 22 and folded to the top of the front baffle 22; during light-shielding injection, the front baffle 22 and the end baffle 23 are pulled out, the front baffle 22 is located in front of the U-shaped groove 11 and fits against the end plate 13, the rear end of the end baffle 23 fits against the front end of the shielding end plate 16, and the front baffle 22 and the end baffle 23 jointly shield the U-shaped groove 11.

[0047] The difference between the third micro-injection pump and the first micro-injection pump is that a shielding end plate 16 is provided, and the end baffle plate 23 is shorter. The liquid conduit connected to the syringe 6 of the first micro-injection pump and the second micro-injection pump needs to be bent before it can be extended. However, since the third micro-injection pump is directly opposite to the center of the syringe 6, the liquid conduit connected to the syringe 6 can be extended from the third through-notch 17 without bending. The front baffle plate 22 and the end baffle plate 23 are preferably made of light-proof plastic.

Claims

1. A microinjection pump, comprising an injection pump housing (1) and a clamping mechanism (4); characterized in that: It comprises a first light-shielding baffle (2); The front lower part of the injection pump housing (1) is provided with a U-shaped groove (11), the lower side wall of the U-shaped groove (11) is provided with a first receiving cavity (12), the injection pump housing (1) is provided with an abutting end plate (13) located at one end of the U-shaped groove (11), the abutting end plate (13) is provided with a syringe groove (14), the clamping mechanism (4) is mounted on the injection pump housing (1), and the part of the clamping mechanism (4) exposed from the injection pump housing (1) is located in the U-shaped groove (11); The first light-shielding baffle (2) is folded and inserted into the first storage cavity (12), the first light-shielding baffle (2) comprising a connecting plate (21), a front baffle (22) and an end baffle (23), the connecting plate (21) being located deep in the first storage cavity (12), the front baffle (22) being located in front of the connecting plate (21) and being hinged to the connecting plate (21), the end baffle (23) being hinged to one end of the front baffle (22) and being folded to the top of the front baffle (22), and the end baffle (23) being provided with a first through-notch (231); During light-shielding injection, the front baffle (22) and the end baffle (23) are pulled out, the front baffle (22) is located in front of the U-shaped groove (11) and abuts against the end plate (13), the end baffle (23) is located outside the end of the U-shaped groove (11) away from the end plate (13), the front baffle (22) and the end baffle (23) jointly shield the U-shaped groove (11), and the first through notch (231) faces the bottom surface of the U-shaped groove (11).

2. The microinjection pump according to claim 1, characterized in that: The front baffle plate (22) and the end baffle plate (23) are made of light-proof plastic.

3. A microinjection pump, comprising an injection pump housing (1) and a clamping mechanism (4); characterized in that: It comprises a first light-shielding baffle (2) and a second light-shielding baffle (3); The front lower part of the injection pump housing (1) is provided with a U-shaped groove (11), the lower side wall of the U-shaped groove (11) is provided with a first receiving chamber (12), the injection pump housing (1) is provided with an abutting end plate (13) located at one end of the U-shaped groove (11) and a second receiving chamber (15) located at the other end of the U-shaped groove (11), the abutting end plate (13) is provided with a syringe groove (14), the clamping mechanism (4) is mounted on the injection pump housing (1), and the part of the clamping mechanism (4) exposed from the injection pump housing (1) is located in the U-shaped groove (11); The first light-shielding baffle (2) is inserted into the first receiving cavity (12), the first light-shielding baffle (2) comprising a connecting plate (21) and a front baffle (22), the connecting plate (21) being located deep in the first receiving cavity (12), the front baffle (22) being located in front of the connecting plate (21) and being hinged to the connecting plate (21); the second light-shielding baffle (3) is inserted into the second receiving cavity (15), the front end of the second light-shielding baffle (3) having a second through-notch (31); During light-shielding injection, the front baffle (22) is pulled out, the front baffle (22) is located in front of the U-shaped groove (11) and abuts against the end plate (13), the second light-shielding baffle (3) is pulled out until it abuts against the front baffle (22), and the front baffle (22) and the second light-shielding baffle (3) jointly shield the U-shaped groove (11).

4. The microinjection pump according to claim 3, characterized in that: The front baffle plate (22) and the second light-shielding baffle plate (3) are made of light-shielding plastic.

5. A microinjection pump, comprising an injection pump housing (1) and a clamping mechanism (4); characterized in that: It comprises a first light-shielding baffle (2); The front lower part of the injection pump housing (1) is provided with a U-shaped groove (11), the lower side wall of the U-shaped groove (11) is provided with a first receiving cavity (12), the injection pump housing (1) is provided with an abutting end plate (13) located at one end of the U-shaped groove (11) and a shielding end plate (16) located at the other end of the U-shaped groove (11), the abutting end plate (13) is provided with a syringe groove (14), the front end of the shielding end plate (16) is provided with a third through-notch (17), when the syringe (6) is installed, the third through-notch (17) is directly opposite to the center of the syringe (6), the clamping mechanism (4) is installed on the injection pump housing (1), and the part of the clamping mechanism (4) exposed from the injection pump housing (1) is located in the U-shaped groove (11); The first light-shielding baffle (2) is folded and inserted into the first storage cavity (12), the first light-shielding baffle (2) comprising a connecting plate (21), a front baffle (22) and an end baffle (23), the connecting plate (21) being located deep in the first storage cavity (12), the front baffle (22) being located in front of the connecting plate (21) and being hinged to the connecting plate (21), and the end baffle (23) being hinged to one end of the front baffle (22) and being folded above the front baffle (22); During light-shielding injection, the front baffle (22) and the end baffle (23) are pulled out, the front baffle (22) is located in front of the U-shaped groove (11) and fits against the end plate (13), the rear end of the end baffle (23) fits against the front end of the shielding end plate (16), and the front baffle (22) and the end baffle (23) jointly shield the U-shaped groove (11).

6. The microinjection pump according to claim 5, characterized in that: The front baffle plate (22) and the end baffle plate (23) are made of light-proof plastic.

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