Piercing depth adjusting mechanism of a blood glucose monitoring piercing needle

Abstract

The utility model relates to the field of puncture needle, especially a puncture depth adjusting mechanism of puncture needle for blood sugar monitoring, including cylinder, the middle part of cylinder is equipped with cylinder cavity, the middle part of cylinder cavity is equipped with connecting seat, the bottom of connecting seat is screwed and has the adjusting lever, and the top of connecting seat is connected with trigger seat through spring no.

Description

Technical Field

[0001] This utility model relates to the field of puncture needle technology, and in particular to a puncture depth adjustment mechanism for a puncture needle used for blood glucose monitoring. Background Technology

[0002] A blood glucose monitoring puncture needle, also known as a blood glucose sampling needle, is a commonly used tool for blood glucose monitoring. It involves pricking the finger to collect a small amount of blood for testing by a blood glucose meter, thereby helping patients understand their blood glucose levels.

[0003] Currently, traditional puncture needles often cannot adjust their puncture depth. When patients use them, due to differences in individual physical conditions, a fixed puncture depth can lead to inconvenience and unstable measurements. Therefore, there is an urgent need for a puncture depth adjustment mechanism for blood glucose monitoring puncture needles. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a puncture depth adjustment mechanism for a puncture needle used for blood glucose monitoring.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A puncture depth adjustment mechanism for a blood glucose monitoring needle includes a cylindrical body. The cylindrical body has a cavity in the middle, and a connecting seat is provided in the middle of the cavity. An adjusting rod is screwed to the bottom of the connecting seat, and a trigger seat is connected to the top of the connecting seat through a second spring. The outer side of the trigger seat is limited and installed in an activation groove opened in the inner wall of the cylindrical body by a limiting post. The upper part of the trigger seat is connected to a needle seat through a first spring. A needle is provided in the middle of the needle seat, and a pressing post is provided above the needle seat. The pressing post is limited and installed at the upper end of the cylindrical body.

[0007] In addition, a preferred structure is that an adjustment knob is rotatably installed at the bottom of the cylinder, and one end of the adjustment knob is provided with an adjustment rod that extends into the cylinder cavity and is screwed to the bottom of the connecting seat.

[0008] In addition, a preferred structure is that both ends of the outer side of the trigger seat are provided with limiting posts, which are slidably installed in the excitation groove. The excitation groove is "J" shaped, and in the natural state, the limiting posts are locked in place at a short groove at the bottom of the excitation groove.

[0009] In addition, a preferred structure is that a needle seat is mounted on the upper middle part of the trigger seat via a flexible column, the needle seat is slidably mounted in the pressing column, and a needle is mounted on the middle part of the needle seat, with a rubber cover sleeved on the middle part of the needle.

[0010] In addition, a preferred structure is that the upper part of the cylinder is provided with an opening to connect to the cylinder cavity, and the upper inner wall of the cylinder cavity is provided with multiple sliding grooves, and a pressing column is slidably installed in the sliding grooves by limiting protrusions.

[0011] In addition, a preferred structure is that guide feet are installed on both sides of the bottom of the pressing column, and the bottom end of the guide feet supports the upper end of the limiting column.

[0012] In addition, a preferred structure is that the pressing column has a through hole in the middle to allow the needle to pass through, and the inner wall of the pressing column is fitted with a needle seat.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, rotating the adjustment knob moves the connecting seat as a whole. During the lifting and lowering process, the connecting seat changes the overall rebound trigger stroke of the second spring, thereby changing the distance at which the trigger seat is pushed back by the spring. The trigger seat is activated by the pressing column and pushes upward to pierce the user's finger. This effectively realizes the function of adjusting the piercing depth, meets different usage needs, and improves measurement stability. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the internal structure of a puncture depth adjustment mechanism for a puncture needle used for blood glucose monitoring, as proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the overall external structure of the puncture needle proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the adjustment knob structure proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal connection structure of the pressing column proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the excitation groove connection structure proposed in this utility model;

[0020] Figure 6 This is a schematic diagram of the guide foot structure proposed in this utility model.

[0021] In the diagram: 1. Cylinder body, 101. Cylinder cavity, 2. Pressing column, 21. Guide foot, 22. Limiting protrusion, 3. Adjusting knob, 31. Adjusting rod, 4. Trigger seat, 41. Spring 1, 42. Spring 2, 5. Connecting seat, 6. Limiting column, 7. Flexible column, 8. Rubber cover, 9. Needle, 10. Excitation groove, 11. Slide groove, 12. Needle seat. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6 A puncture depth adjustment mechanism for a puncture needle used for blood glucose monitoring includes a cylindrical body 1, a cavity 101 in the middle of the cylindrical body 1, a connecting seat 5 in the middle of the cavity 101, an adjusting rod 31 screwed to the bottom of the connecting seat 5, and a trigger seat 4 connected to the top of the connecting seat 5 by a second spring 42. The outer side of the trigger seat 4 is limited and installed in an activation groove 10 opened in the inner wall of the cavity 101 by a limiting post 6, and the upper part of the trigger seat 4 is connected to a needle seat 12 by a first spring 41. A needle 9 is provided in the middle of the needle seat 12, and a pressing post 2 is provided above the needle seat 12. The pressing post 2 is limited and installed at the upper end of the cylindrical body 1.

[0024] Furthermore, an adjustment knob 3 is rotatably installed at the bottom of the cylinder 1. One end of the adjustment knob 3 is provided with an adjustment rod 31, which extends into the cylinder cavity 101 and is screwed to the bottom of the connecting seat 5.

[0025] Furthermore, both ends of the outer side of the trigger seat 4 are provided with limiting posts 6. The limiting posts 6 are slidably installed in the excitation groove 10. The excitation groove 10 is "J" shaped. In the natural state, the limiting posts 6 are locked in place at a short groove at the bottom of the excitation groove 10.

[0026] Furthermore, a needle holder 12 is installed at the upper middle part of the trigger seat 4 via a flexible column 7. The needle holder 12 is slidably installed inside the pressing column 2, and a needle 9 is installed at the middle part of the needle holder 12. A rubber cover 8 is sleeved on the middle part of the needle 9.

[0027] Furthermore, the upper part of the cylinder 1 is provided with an opening to connect to the cylinder cavity 101. The upper inner wall of the cylinder cavity 101 is provided with multiple sliding grooves 11. A pressing column 2 is slidably installed in the sliding groove 11 by a limiting protrusion 22.

[0028] Furthermore, guide feet 21 are installed on both sides of the bottom of the pressing column 2. The bottom end of the guide feet 21 supports the upper end of the limiting column 6. The guide feet 21 move downward and press against the limiting column 6, thereby triggering the limiting column 6 to return.

[0029] Furthermore, a through hole is provided in the middle of the pressing column 2 to allow the needle 9 to pass through, and a needle seat 12 is sleeved on the inner wall of the pressing column 2.

[0030] In this embodiment, during normal use of the puncture needle, by placing a finger on the upper part of the pressing column 2 and applying downward pressure, the pressing column 2 moves downward and presses against the limiting columns 6 on both sides of the trigger seat 4 through the two guide feet 21 at its bottom. Since the bottom of the trigger seat 4 is connected to the second spring 42, the pressing column 2 needs to apply a certain force to push the trigger seat 4 during the pressing process. Then, when the limiting column 6 moves downward under the pressure, the limiting column 6 is limited to moving in the J-shaped trigger groove 10, and its short side groove opening is inclined. 6. Affected by the inclined slot, it moves towards the vertical slot on the long side. At this time, due to the movement of the limiting post 6 to one side, the limiting post 6 is separated from the guide foot 21. Under the push-back action of the second spring 42, it quickly leaves the short side slot and enters the vertical slot on the long side (excitation slot 10). At this time, the trigger seat 4 is quickly pushed up by the second spring 42, and through the first spring 41 and the flexible post 7, it drives the needle seat 12 connected to it to be pushed up quickly, so that the needle 9 quickly breaks through the upper surface of the pressing post 2 and punctures the fingertip pressed on the surface of the pressing post 2.

[0031] In actual use, when adjusting the puncture depth, the adjustment knob 3 at the bottom of the cylinder 1 is rotated. The rotation of the adjustment knob 3 drives the adjustment rod 31 connected to it to rotate. The rotation of the adjustment rod 31 drives the connecting seat 5 to rise and fall as a whole through the thread. The rise and fall will change the overall height of the connecting seat 5 and compress the second spring 42 to different degrees. Since the trigger seat 4 connected to the upper part of the second spring 42 remains stationary in its natural state, the overall rebound stroke of the second spring 42 changes, thereby changing the ejection distance of the needle 9, i.e., the puncture depth.

[0032] In actual use, the rubber cover 8 can offset some of the direct puncture impact and relieve pain.

[0033] In this utility model, by rotating the adjustment knob 3, the connecting seat 5 is moved as a whole. During the lifting and lowering process, the connecting seat changes the overall rebound trigger stroke of the spring 42, thereby changing the distance at which the trigger seat 4 is pushed back by the spring. The trigger seat 4 is activated by the pressing column 2 and pushes upward to pierce the user's finger. This effectively realizes the function of adjusting the piercing depth, meets different usage needs, and improves measurement stability.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A puncture depth adjustment mechanism for a puncture needle used for blood glucose monitoring, comprising a cylindrical body (1), characterized in that, The cylinder (1) has a cavity (101) in the middle, and a connecting seat (5) is provided in the middle of the cavity (101). An adjusting rod (31) is screwed to the bottom of the connecting seat (5), and a trigger seat (4) is connected to the top of the connecting seat (5) through a second spring (42). The outer side of the trigger seat (4) is limited by a limiting post (6) and installed in the excitation groove (10) opened on the inner wall of the cavity (101). The upper part of the trigger seat (4) is connected to the needle seat (12) through a first spring (41). A needle (9) is provided in the middle of the needle seat (12), and a pressing post (2) is provided above the needle seat (12). The pressing post (2) is limited and installed at the upper end of the cylinder (1).

2. The puncture depth adjustment mechanism for a puncture needle for blood glucose monitoring according to claim 1, characterized in that, An adjustment knob (3) is rotatably installed at the bottom of the cylinder (1). One end of the adjustment knob (3) is provided with an adjustment rod (31). The adjustment rod (31) extends into the cylinder cavity (101) and is screwed to the bottom of the connecting seat (5).

3. The puncture depth adjustment mechanism for a blood glucose monitoring puncture needle according to claim 1, characterized in that, The trigger seat (4) is provided with limiting posts (6) at both ends of the outer side. The limiting posts (6) are slidably installed in the excitation groove (10). The excitation groove (10) is "J" shaped. In the natural state, the limiting posts (6) are locked at a short groove at the bottom of the excitation groove (10).

4. The puncture depth adjustment mechanism for a puncture needle for blood glucose monitoring according to claim 1, characterized in that, The upper middle part of the trigger seat (4) is equipped with a needle seat (12) through a flexible column (7). The needle seat (12) is slidably installed in the pressing column (2), and a needle (9) is installed in the middle of the needle seat (12). A rubber cover (8) is sleeved on the middle of the needle (9).

5. The puncture depth adjustment mechanism for a puncture needle for blood glucose monitoring according to claim 1, characterized in that, The upper part of the cylinder (1) is provided with an opening to connect to the cylinder cavity (101). The upper inner wall of the cylinder cavity (101) is provided with multiple sliding grooves (11). A pressing column (2) is slidably installed in the sliding groove (11) by a limiting protrusion (22).

6. The puncture depth adjustment mechanism for a puncture needle for blood glucose monitoring according to claim 5, characterized in that, Guide feet (21) are installed on both sides of the bottom of the pressing column (2), and the bottom end of the guide feet (21) is supported on the upper end of the limiting column (6).

7. The puncture depth adjustment mechanism for a puncture needle for blood glucose monitoring according to claim 6, characterized in that, The pressing column (2) has a through hole in the middle to allow the needle (9) to pass through, and the inner wall of the pressing column (2) is fitted with a needle seat (12).

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