Auxiliary cover pulling mechanism for disposable blood taking needle

Abstract

The utility model discloses an auxiliary uncovering mechanism for a disposable blood taking needle, and relates to the technical field of medical auxiliary equipment, the auxiliary uncovering mechanism comprises a box body and a drawer, the lower part of one side of the box body is provided with a cavity, the drawer is arranged in the cavity in a sliding manner, the upper part of the other side of the box body is provided with a limiting groove, and the limiting groove is arranged in the cavity. One end of the limiting groove communicates with the rectangular cavity. One end of a needle cap of a blood taking needle is inserted into the limiting groove, the needle cap is limited through the arc-shaped limiting plate and the pair of straight plate limiting plates, the rotary knob is rotated, the disc drives the needle cap to rotate by 90 degrees through the arc-shaped limiting plate and the pair of straight plate limiting plates, and the blood taking needle is pulled out through the tail of the blood taking needle. A traditional mode of exerting force on the needle cap is changed into a mode of exerting force on the tail portion of the blood taking needle, due to the fact that the area of the tail portion reserved by the blood taking needle is large, and the stressed area is large when the needle is pulled out, force exerting is small when the needle is pulled out, a needle tube can be pulled out more easily, the needle cap is reserved in the rectangular cavity, the knob is loosened, the needle cap falls into the drawer, operation is more convenient, and the work progress is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to an auxiliary cap-pulling mechanism for a disposable blood collection needle. Background Technique

[0002] In order to perform tests (such as blood type determination and blood glucose measurement) using a small amount of blood, a blood collection needle device is used to pierce the skin surface with a needle. The blood collection needle device is discarded after one use to prevent infection between users.

[0003] In order to increase the safety of using the blood collection needle, the needle cap of the blood collection needle is installed relatively tightly. Since most nurses are female workers with relatively small strength, when using it, it is necessary to rotate and twist forcefully many times to remove the needle cap. Moreover, the needle cap is small and it is very easy to slip off during the rotation of removing the cap. If blood collection is performed on multiple patients, the fingers will be very sore and the cap removal is slow, affecting the work progress. Content of the Utility Model

[0004] To solve the above problems, that is, to solve the problems proposed in the above background technique, the utility model provides an auxiliary cap-pulling mechanism for a disposable blood collection needle, which includes a box body and a drawer. A cavity is provided at the lower part of one side of the box body, and the drawer is slidably arranged in the cavity. A limiting groove is provided at the upper part of the other side of the box body. One end of the limiting groove communicates with a rectangular cavity, the lower side of the rectangular cavity is connected to the cavity, the upper side of the rectangular cavity communicates with a circular cavity, an L-shaped plate is fixedly connected in the rectangular cavity, and the horizontal plate of the L-shaped plate is arranged at the lower side of the circular cavity;

[0005] A rotating structure is provided at the upper part of the box body, and a cap-pulling structure is installed in the rectangular cavity;

[0006] The rotating structure includes a knob, a rotating rod and a torsion spring;

[0007] The rotating rod is located in the circular cavity, the upper end of the rotating rod is connected by a bearing and passes through the box body, the lower end of the rotating rod is connected by a bearing and passes through the horizontal plate of the L-shaped plate, the upper end of the rotating rod is fixedly connected to the knob, and the torsion spring is sleeved and fixedly connected to the outer side of the rotating rod. The upper and lower ends of the torsion spring are respectively fixedly connected to the inside of the box body and the upper side of the L-shaped plate.

[0008] A further setting of the utility model is that the cap-pulling structure includes a bevel gear one, a bevel gear two, a disc, an arc-shaped limiting plate and a pair of straight plate limiting plates;

[0009] The lower end of the rotating rod is fixedly connected to the first bevel gear. The first bevel gear meshes with the second bevel gear. The central axis of the second bevel gear is connected by a bearing and passes through the vertical plate of the L-shaped plate. One end of the central axis of the second bevel gear is fixedly connected to the disc. The upper part on the other side of the disc is fixedly connected to the arc-shaped limiting plate. The middle part on the other side of the disc is fixedly connected to the symmetrical straight plate limiting plates.

[0010] A further setting of the present utility model is that a limiting rod is fixedly connected to the upper side of the box body. There is a support rod on one side of the knob. When the knob rotates 90°, the support rod touches the limiting rod (1), which means the needle cap of the disposable blood collection needle rotates 90°.

[0011] A further setting of the present utility model is that the cross-section of the limiting groove matches the cross-sectional shape of the disposable blood collection needle, and the cross-sectional size of the limiting groove matches the cross-sectional size of the needle cap of the disposable blood collection needle.

[0012] A further setting of the present utility model is that the shape formed by the inner sides of the arc-shaped limiting plate and the pair of straight plate limiting plates matches the cross-section of the needle cap of the disposable blood collection needle. There is a gap between the inner sides of the arc-shaped limiting plate and the pair of straight plate limiting plates and the needle cap of the disposable blood collection needle, which is convenient for the needle cap to fall into the drawer.

[0013] A further setting of the present utility model is that the upper and lower ends of the cross-section of the disposable blood collection needle are arc-shaped surfaces, and the left and right sides are parallel surfaces. The distance between the pair of arc-shaped surfaces > the distance between the pair of planes.

[0014] A further setting of the present utility model is that the distance between the disc and the limiting groove > the length of the needle cap of the disposable blood collection needle. When pulling off the cap, more of the needle tube of the disposable blood collection needle can be extended, increasing the force-bearing area, making it easier to pull off the needle cap, and making the needle cap easier to fall into the drawer.

[0015] A further setting of the present utility model is that the size of the box body is approximately the size of a 300 ml milk carton, which is convenient for carrying and operation.

[0016] A further setting of the present utility model is that the knob is a "⊥"-shaped knob.

[0017] The beneficial technical effects of the present utility model are as follows: One end of the needle cap of the blood collection needle is inserted into the limiting groove, and one end of the needle cap is fixed on the other side of the disc. 1 / 3 of the tail of the blood collection needle remains outside the box body. The needle cap is limited by the arc-shaped limiting plate and a pair of straight plate limiting plates. Rotate the knob, and under the cooperation of the first bevel gear and the second bevel gear, the disc rotates 90°. The disc drives the needle cap to rotate 90° through the arc-shaped limiting plate and a pair of straight plate limiting plates. The width of the needle cap after rotation > the width of the limiting groove. Pull out the blood collection needle through the tail of the blood collection needle. Instead of applying force to the needle cap in the traditional way, force is applied to the tail of the blood collection needle. Since the area of the tail left by the blood collection needle is relatively large and the force-bearing area is large when pulling out the needle, less force is required when pulling out the needle, and it is easier to pull out the needle tube. The needle cap remains in the rectangular cavity. Release the knob, and the needle cap falls into the drawer, making the operation more convenient and improving the work progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Fig. shows the front view of the present utility model.

[0019] Figure 2 Fig. shows the front sectional view of the present utility model.

[0020] Figure 3 Fig. shows the side sectional view of the present utility model.

[0021] Figure 4 Fig. shows the top view of the present utility model.

[0022] Reference numerals: 1, limiting rod; 2, knob; 3, rotating rod; 4, box body; 5, limiting groove; 6, disposable blood collection needle; 7, arc-shaped limiting plate; 8, disc; 9, support rod; 10, torsion spring; 11, first bevel gear; 12, second bevel gear; 13, L-shaped plate; 14, drawer; 15, straight plate limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following refers to the attached Figures 1-4 to describe the preferred embodiments of the present utility model. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0024] The present utility model provides an auxiliary cap-removing mechanism for a disposable blood collection needle. Before use, the torsion spring 10 is in a state of natural elastic deformation, and the arc-shaped limiting plate 7 and a pair of straight plate limiting plates 15 are parallel to the limiting groove 5, as Figures 1-2As shown, when using this device, keep the index finger of one hand vertical, hold the box body 4 with the thumb and the other three fingers of one hand, insert the needle cap of the disposable blood collection needle 6 into the limit groove 5 with the other hand, push the disposable blood collection needle 6 into the limit groove 5, and fit the needle cap against the other side of the disc 8. One-third of the tail of the disposable blood collection needle 6 remains outside the box body 4. The needle cap is located between the arc-shaped limit plate 7 and a pair of straight plate limit plates 15. Press the palm of the other hand against the tail of the disposable blood collection needle 6 to keep the needle cap always in contact with the disc 8. Rotate the knob 2 with the thumb and index finger of the other hand. When one end of the support rod 9 driven by the knob 2 fits against one side of the limit rod 1, the knob 2 rotates 90°. The knob 2 drives the rotating rod 3 to rotate. The rotating rod 3 drives the torsion spring 10 to undergo elastic deformation. The rotating rod 3 drives the first bevel gear 11 to rotate. The first bevel gear 11 drives the meshing second bevel gear 12 to rotate. The second bevel gear 12 drives the disc 8 to rotate 90°. The disc 8 drives the arc-shaped limit plate 7 and a pair of straight plate limit plates 15 to rotate 90°. The arc-shaped limit plate 7 and a pair of straight plate limit plates 15 drive the needle cap to rotate 90°. The needle tube of the disposable blood collection needle 6 does not rotate under the action of the limit groove 5. After rotating the needle cap 90°, hook the erected index finger of one hand on the knob 2 (due to the shape characteristics of the knob 2) to keep the needle cap in the state of rotating 90°. Since the distance between a pair of arc surfaces of the needle cap > the distance between a pair of flat surfaces, the width of the needle cap after rotation > the width of the limit groove 5, as Figures 3-4 shown, pull out the needle tube of the disposable blood collection needle 6 outward with the other hand. Limit the needle cap through the limit groove 5. Instead of applying force to the needle cap in the traditional way, apply force to the tail of the needle tube. Since the area of the tail left by the disposable blood collection needle 6 is large and the force-bearing area is large when pulling out the needle, the force required when pulling out the needle is small, and it is easier to pull out the needle tube. The needle cap remains in the arc-shaped limit plate 7 and a pair of straight plate limit plates 15. Release the knob, and the torsion spring 10 returns to its initial state. The arc-shaped limit plate 7 and a pair of straight plate limit plates 15 return to their initial states. The needle cap then vertically drops into the drawer 14. This device is small in size, convenient to carry and operate, and the operation is convenient. After getting used to the operation, one can pull out a needle tube in 10 - 20 s, improving the work progress.

[0025] Although the present utility model has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0026] In the description of the present utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0029] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. An auxiliary cap-removing mechanism for a disposable blood collection needle, comprising a box body (4) and a drawer (16), characterized in that: A cavity is provided at the lower part of one side of the box body (4), the drawer (16) is slidably arranged in the cavity, a limiting groove (5) is provided at the upper part of the other side of the box body (4), one end of the limiting groove (5) communicates with a rectangular cavity, the lower side of the rectangular cavity is communicated with the cavity, the upper side of the rectangular cavity is communicated with a circular cavity, an L-shaped plate (13) is fixedly connected in the rectangular cavity, and the horizontal plate of the L-shaped plate (13) is arranged at the lower side of the circular cavity; A rotating structure is provided at the upper part of the box body (4), and a cover-pulling structure is installed in the rectangular cavity; The rotating structure includes a knob (2), a rotating rod (3) and a torsion spring (10); The rotating rod (3) is located in the circular cavity, the upper end of the rotating rod (3) is connected by a bearing and passes through the box body (4), the lower end of the rotating rod (3) is connected by a bearing and passes through the horizontal plate of the L-shaped plate (13), the knob (2) is fixedly connected to the upper end of the rotating rod (3), the torsion spring (10) is sleeved and fixedly connected to the outer side of the rotating rod (3), and the upper and lower ends of the torsion spring (10) are respectively fixedly connected to the inside of the box body (4) and the upper side of the L-shaped plate (13).

2. The auxiliary cap-pulling mechanism for a disposable blood collection needle according to claim 1, characterized in that: The cover-pulling structure includes a first bevel gear (11), a second bevel gear (12), a disc (8), an arc-shaped limiting plate (7) and a pair of straight plate limiting plates (15); The lower end of the rotating rod (3) is fixedly connected to the first bevel gear (11), the first bevel gear (11) meshes with the second bevel gear (12), the central axis of the second bevel gear (12) is connected by a bearing and passes through the vertical plate of the L-shaped plate (13), one end of the central axis of the second bevel gear (12) is fixedly connected to the disc (8), the upper part of the other side of the disc (8) is fixedly connected to the arc-shaped limiting plate (7), and the middle part of the other side of the disc (8) is fixedly connected to the symmetric straight plate limiting plates (15).

3. The auxiliary cap-pulling mechanism for a disposable blood collection needle according to claim 1, wherein: A limiting rod (1) is fixedly connected to the upper side of the box body (4), a support rod (9) is provided on one side of the knob (2), and when the knob (2) rotates 90°, the support rod (9) touches the limiting rod (1), which means the needle cap of the disposable blood collection needle rotates 90°.

4. The auxiliary cap-removing mechanism for a disposable blood collection needle according to claim 2, characterized in that: The cross-section of the limiting groove (5) matches the cross-section shape of the disposable blood collection needle (6), and the cross-section size of the limiting groove (5) matches the cross-section size of the needle cap of the disposable blood collection needle (6).

5. The auxiliary cap removal mechanism for a disposable blood collection needle according to claim 2, characterized in that: The shape formed by the inner sides of the arc-shaped limiting plate (7) and the pair of straight plate limiting plates (15) matches the cross-section of the needle cap of the disposable blood collection needle (6), and there is a gap between the inner sides of the arc-shaped limiting plate (7) and the pair of straight plate limiting plates (15) and the needle cap of the disposable blood collection needle (6).

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