Blood pricking pen convenient to adjust

Abstract

The utility model discloses a blood pricking pen convenient to adjust, and relates to the field of medical instruments, the blood pricking pen convenient to adjust comprises a shell, an adjusting mechanism is arranged in the shell, and by means of the structure, the blood pricking pen convenient to adjust can rotate by rotating an adjusting knob, the adjusting knob drives an adjusting cylinder to rotate and drives a telescopic cylinder to vertically move; the telescopic cylinder vertically moves to drive the connecting circular plate to vertically move, so that the height of the needle head is driven to be adjusted, the depth of the needle head in the human body is adjusted, adjustment is more accurate, and the use efficiency of the lancet is improved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and particularly to a lancet that is convenient to adjust. Background Art

[0002] A lancet is a tool used in medical and laboratory environments, mainly for collecting venous or fingertip blood samples.

[0003] For example, a regulable lancet with the publication number 202020603996.6 includes a rod body, an inner pen rod, an adjustment button, and a lancet needle. The rod body includes an upper pen rod and a lower pen rod, and the upper pen rod is detachably connected to the lower pen rod. The upper pen rod and the lower pen rod are hollow inside. There is a first through hole on the upper side of the upper pen rod, a second through hole on the upper side of the lower pen rod, and a third through hole on the lower side thereof; the inner pen rod is slidably arranged inside the rod body, with its first end arranged inside the upper pen rod and its second end passing through the second through hole and placed inside the lower pen rod; one end of the adjustment button passes through the first through hole, and the other end is slidably arranged inside the upper pen rod and is threadedly connected to the first end of the inner pen rod; the lancet needle includes a syringe barrel and a needle body arranged on the lower side of the syringe barrel. The lancet needle can be installed at the second end of the inner pen rod, and the inner pen rod can drive the lancet needle to slide so that it passes through the third through hole and extends out of the lower pen rod. There are still the following deficiencies in actual use:

[0004] When the above-mentioned regulable lancet is actually used, the height is adjusted by clamping the internal rod body through the adjustment button. This adjustment method gradually becomes inaccurate in the vertical position as the friction of the rod body decreases, or the rod body slides due to too small friction during use, resulting in a dislocation phenomenon. This situation seriously affects the normal use of the lancet. Utility Model Content

[0005] In order to improve the problem of inaccurate adjustment position, this application provides a lancet that is convenient to adjust.

[0006] The lancet that is convenient to adjust provided by this application adopts the following technical solutions:

[0007] A lancet that is convenient to adjust includes a housing, and an adjustment mechanism is arranged inside the housing;

[0008] The adjustment mechanism includes a telescopic cylinder that is slidably connected to the inner wall of the housing. A connecting circular plate is fixedly connected to the bottom of the telescopic cylinder. A connecting cylinder is fixedly connected to the bottom of the connecting circular plate. A fixed cylinder that fits against the bottom of the connecting circular plate is threadedly connected to the inner wall of the connecting cylinder. A needle that fits against the bottom of the connecting circular plate passes through the bottom of the inner wall of the fixed cylinder movably.

[0009] Preferably, the adjustment mechanism further includes a limiting ring fixedly connected to the inner wall of the housing, and a movable disk that is rotatably connected to the inner wall of the housing and fits against the bottom of the limiting ring.

[0010] Preferably, a control rod penetrates through the top of the movable disc, an adjusting knob is fixedly connected to the top of the control rod, and a spring is fixedly connected to the bottom of the movable disc.

[0011] Preferably, the bottom of the spring is fixedly connected to a fixed disc fixedly connected to the inner wall of the housing.

[0012] Preferably, the top of the fixed disc is movably penetrated by the control rod, and an adjusting cylinder is fixedly connected to the bottom of the control rod.

[0013] Preferably, the side wall of the adjusting cylinder is threadedly connected to the inner wall of the telescopic cylinder, and the telescopic cylinder is attached to the bottom of the fixed disc.

[0014] Preferably, a protective cylinder is threadedly connected to the outer wall of the housing.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. By rotating the adjusting knob, the adjusting knob drives the adjusting cylinder to rotate, drives the telescopic cylinder to move vertically, the vertical movement of the telescopic cylinder drives the connecting circular plate to move vertically, thereby driving the needle to adjust the height, thereby adjusting the depth of the needle entering the human body, so that the adjustment is more accurate, thereby improving the use efficiency of the lancet.

[0017] 2. By pressing the bottom of the housing against the skin, the bottom of the needle is aligned with the skin, and then the adjusting knob is pressed, thereby driving the movable disc to move vertically downward, the control rod will drive the fixed cylinder to move vertically, and the fixed cylinder will drive the needle to move vertically downward, thereby piercing the skin, so that a small blood bead appears on the skin, thereby facilitating subsequent operations.

[0018] 3. By rotating the protective cylinder, the protective cylinder moves vertically downward, so that when there is an accidental drop or it touches the human body surface, the bottom of the protective cylinder first contacts the outside world, thereby separating and protecting the needle from the outside world, thereby avoiding accidental stabbing or the needle being damaged by bumping.

[0019] 4. When the needle needs to be replaced, rotate the fixed cylinder to release the threaded connection between the fixed cylinder and the connecting cylinder. Then, take out the needle. Next, pass the syringe part of the replaced needle downward through the hole at the bottom of the fixed cylinder so that the needle points downward. Then, thread the fixed cylinder and the connecting cylinder together again. As the fixed cylinder rotates, the fixed cylinder will drive the needle to move vertically upward, so that the upper end of the needle fits against the bottom of the connecting circular plate. Thus, the needle is fixed by the connecting circular plate and the fixed cylinder, and the replacement of the needle is completed. When the lengths of the needles are different, the distance between the fixed cylinder and the connecting circular plate can be adjusted to facilitate dealing with needles of different requirements and sizes. There is no need to directly connect to the needle. Only by using the fixed cylinder and the connecting circular plate can the position of the needle be fixed, which is convenient for timely replacement. Description of the Drawings

[0020] Figure 1 Figure showing the overall display of the lancet for convenient adjustment in this application;

[0021] Figure 2 Figure showing the overall display of the lancet for convenient adjustment in this application from another perspective;

[0022] Figure 3 Figure showing the overall cross-sectional view of the lancet for convenient adjustment in this application;

[0023] Figure 4 Figure showing the partial display at the adjustment knob of the lancet for convenient adjustment in this application;

[0024] Figure 5 Figure showing the partial display at the adjustment cylinder of the lancet for convenient adjustment in this application;

[0025] Figure 6 Figure showing the partial display at the needle of the lancet for convenient adjustment in this application;

[0026] Figure 7 Figure showing the structural explosion view at the needle of the lancet for convenient adjustment in this application.

[0027] Reference Signs:

[0028] 1. Outer shell;

[0029] 2. Adjusting mechanism; 21. Limiting ring; 22. Movable disk; 23. Control rod; 24. Adjusting knob; 25. Spring; 26. Fixed disk; 27. Adjusting cylinder; 28. Telescopic cylinder; 29. Protective cylinder; 210. Connecting circular plate; 211. Connecting cylinder; 212. Fixed cylinder;

[0030] 3. Needle. Detailed Description of the Invention

[0031] The following is combined with the attached Figures 1-7Further details of this application are provided below.

[0032] An embodiment of this application discloses a convenient-to-adjust lancet.

[0033] Embodiment 1

[0034] Referring to Figure 1 , a convenient-to-adjust lancet includes a housing 1 for easy grasping by the user, and an adjustment mechanism 2 is provided inside the housing 1;

[0035] Referring to Figure 6 , 7, the adjustment mechanism 2 includes a telescopic cylinder 28 slidably connected to the inner wall of the housing 1. The bottom of the telescopic cylinder 28 is fixedly connected to the top of the connecting circular plate 210. One side of the connecting circular plate 210 away from the telescopic cylinder 28 is fixedly connected to the top of the connecting cylinder 211. A first thread is provided on the inner wall of the connecting cylinder 211, and a second thread is provided on the outer wall of the fixed cylinder 212. The first thread and the second thread are threadedly connected, so that the fixed cylinder 212 and the connecting cylinder 211 are threadedly connected. The top of the fixed cylinder 212 fits against the bottom of the connecting circular plate 210, making the connection more tight. A first circular hole is provided at the bottom of the inner wall of the fixed cylinder 212. The needle 3 passes through the housing 1 movably, so that the needle 3 is limited by the fixed cylinder 212. The top of the needle 3 fits against the bottom of the connecting circular plate 210, so that the needle 3 cannot move in the vertical direction.

[0036] Referring to Figure 2 , 3, 4, the adjustment mechanism 2 further includes a limiting ring 21 fixedly connected to the inner wall of the housing 1. The outer wall of the movable disc 22 is rotatably connected to the inner wall of the housing 1. The top of the movable disc 22 fits against the bottom of the limiting ring 21, so that the movable disc 22 is limited by the limiting ring 21. A second circular hole is provided at the top of the movable disc 22. The control rod 23 passes through the second circular hole fixedly, so that the control rod 23 is fixedly connected to the movable disc 22. The top of the control rod 23 is fixedly connected to the bottom of the adjustment knob 24, so that it is convenient to drive the control rod 23 to move through the adjustment knob 24. The bottom of the movable disc 22 is fixedly connected to the top of the spring 25.

[0037] Referring to Figure 4, 5. The bottom of the spring 25 is fixedly connected to the top of the fixed disc 26, and the side wall of the fixed disc 26 is fixedly connected to the inner wall of the outer shell 1, so as to fix the fixed disc 26 through the outer shell 1. A circular hole three is provided in the top of the fixed disc 26, and the control rod 23 movably penetrates through the circular hole three, so that the fixed disc 26 and the control rod 23 are movably penetrated. The bottom of the control rod 23 is fixedly connected to the top of the adjusting cylinder 27. A thread three is provided on the side wall of the adjusting cylinder 27, and a thread four is provided on the outer wall of the telescopic cylinder 28. The thread three and the thread four are threadedly connected, so that the adjusting cylinder 27 and the telescopic cylinder 28 are threadedly connected. The top of the telescopic cylinder 28 is attached to the bottom of the fixed disc 26, so as to limit the telescopic cylinder 28 through the fixed disc 26. The outer wall of the outer shell 1 is threadedly connected to the inner wall of the protective cylinder 29, so as to facilitate adjusting the vertical height of the protective cylinder 29 by rotating the protective cylinder 29.

[0038] In this embodiment, the needle 3 in the connecting cylinder 211 can also be replaced with a triangular needle, and the triangular needle is fixed by meshing and fixing the fixed cylinder 212 with the connecting cylinder 211.

[0039] The implementation principle of a blood lancet that is convenient to adjust according to the embodiment of the present application is as follows:

[0040] When adjustment is required, the staff rotates the adjustment knob 24. The adjustment knob 24 will drive the control rod 23 to rotate. The control rod 23 will drive the adjustment cylinder 27 to rotate. When the adjustment cylinder 27 rotates, the adjustment cylinder 27 will drive the telescopic cylinder 28 to move vertically. When the telescopic cylinder 28 moves vertically, it will drive the connecting circular plate 210 to move vertically, so as to drive the needle 3 to adjust the vertical height.

[0041] When performing blood lancet operation, the staff first presses the bottom of the outer shell 1 on the skin so that the bottom of the needle 3 is aligned with the vein. Subsequently, the staff presses the adjustment knob 24. The adjustment knob 24 will drive the control rod 23 to move vertically downward. The control rod 23 will drive the movable disc 22 to move vertically downward. The spring 25 will be compressed. The bottom of the control rod 23 will drive the adjustment cylinder 27 to move vertically downward. The adjustment cylinder 27 will drive the telescopic cylinder 28 to move vertically downward. The telescopic cylinder 28 will drive the connecting circular plate 210 to move vertically downward. The connecting circular plate 210 will drive the connecting cylinder 211 to move vertically downward. The connecting cylinder 211 will drive the fixed cylinder 212 to move vertically. The fixed cylinder 212 will drive the needle 3 to move vertically downward, so as to pierce the skin and make a small blood bead appear on the skin, so as to facilitate continuous blood collection. After piercing, it is driven by the reverse thrust of the spring 25 to drive the needle 3 to reset.

[0042] When the blood lancet is not in use and needs to be placed statically, the staff rotates the protective cylinder 29. Since the protective cylinder 29 is threadedly connected to the outer shell 1, it will move vertically downward. Thus, when there is an accidental drop or it touches the human body surface, the bottom of the protective cylinder 29 will first contact the outside world, thereby separating the needle 3 from the outside world for protection, and avoiding accidental stabbing or damage to the needle 3 caused by knocking.

[0043] When the needle 3 needs to be replaced, the staff rotates the fixed cylinder 212 to release the threaded connection state between the fixed cylinder 212 and the connecting cylinder 211. Then, the needle 3 is replaced. Next, the lower syringe part of the replaced needle 3 is passed through the bottom of the fixed cylinder 212 (refer to Figure 7 ), so that the syringe of the needle 3 faces downward. Then, the fixed cylinder 212 and the connecting cylinder 211 are aligned, and the fixed cylinder 212 is rotated so that the fixed cylinder 212 is threadedly connected to the connecting cylinder 211 again, causing the fixed cylinder 212 to drive the needle 3 to approach the bottom of the connecting circular plate 210. Finally, the upper end of the needle 3 fits against the bottom of the connecting circular plate 210, thereby fixing the needle 3. For example, needles 3 suitable for disposable sterile injection or disposable fingertip blood collection needles can be synchronously replaced in this way.

[0044] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A blood lancet that is convenient to adjust, comprising a housing (1), characterized in that: An adjustment mechanism (2) is provided inside the outer shell (1); The adjustment mechanism (2) includes a telescopic cylinder (28) slidably connected to the inner wall of the outer shell (1). A connecting circular plate (210) is fixedly connected to the bottom of the telescopic cylinder (28). A connecting cylinder (211) is fixedly connected to the bottom of the connecting circular plate (210). A fixed cylinder (212) that fits against the bottom of the connecting circular plate (210) is threadedly connected to the inner wall of the connecting cylinder (211). A needle (3) that fits against the bottom of the connecting circular plate (210) movably penetrates through the bottom of the inner wall of the fixed cylinder (212).

2. The lancet pen according to claim 1, which is conveniently adjustable, is characterized in that: The adjustment mechanism (2) further includes a limiting ring (21) fixedly connected to the inner wall of the outer shell (1). A movable disk (22) that fits against the bottom of the limiting ring (21) is rotatably connected to the inner wall of the outer shell (1).

3. The lancet pen according to claim 2, wherein: A control rod (23) fixedly penetrates through the top of the movable disk (22). An adjustment knob (24) is fixedly connected to the top of the control rod (23). A spring (25) is fixedly connected to the bottom of the movable disk (22).

4. The lancet pen that is conveniently adjustable according to claim 3, characterized in that: The bottom of the spring (25) is fixedly connected to a fixed disk (26) fixedly connected to the inner wall of the outer shell (1).

5. The lancet pen capable of being conveniently adjusted according to claim 4, wherein: The top of the fixed disk (26) is movably penetrated by the control rod (23). An adjustment cylinder (27) is fixedly connected to the bottom of the control rod (23).

6. The lancet pen according to claim 5, wherein: The side wall of the adjustment cylinder (27) is threadedly connected to the inner wall of the telescopic cylinder (28). The telescopic cylinder (28) fits against the bottom of the fixed disk (26).

7. A bloodletting pen that is conveniently adjustable according to claim 1, characterized in that: A protective cylinder (29) is threadedly connected to the outer wall of the outer shell (1).

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