CN111939072B - A needle protection device - Google Patents

Abstract

The technical proposal discloses a needle head protection device in the field of medical appliances, which comprises a fixed ring, an adjusting mechanism, a mounting cylinder and a guide cylinder, wherein the axial direction of the mounting cylinder and the guide cylinder are communicated; the guide cylinder is movably connected in the mounting cylinder, and the fixing ring is sleeved on the mounting cylinder; the adjusting mechanism comprises a circular ring and an inverted conical cone head, the circular ring is fixedly connected to the bottom of the mounting cylinder, the inner wall of the fixing ring is attached to the outer wall of the larger end of the cone head, the larger end of the cone head is provided with a guide hole with gradually reduced aperture, and the cone head is composed of a plurality of fan-shaped blocks rotationally connected to the circular ring. By the needle head protection device, the rubber plug of the medicine bottle is pierced by the conical head, so that the phenomenon that the rubber plug is blunted due to piercing of the needle head is avoided.

Description

A needle protection device

Technical field

The invention belongs to the field of medical devices, and particularly relates to a needle protection device.

Background technique

In surgical procedures such as laser cosmetic surgery, patients are mostly required to receive drug injections. When preparing medicine, you need to insert needles into different medicine bottles to draw the medicine liquid, then mix the various medicine liquids, and then inject them into the patient. Since medicine bottles are generally sealed with rubber stoppers, the needle needs to pierce the rubber stopper on the medicine bottle before absorbing the liquid in the medicine. The process of the needle piercing multiple rubber stoppers will cause the needle to become blunt. When the needle is used to inject medicine into a patient, the patient may feel pain because the needle becomes dull.

In response to this situation, the current main solution is to replace the needle, but replacing the needle will lead to a great waste of needles.

Contents of the invention

The present invention is intended to provide a needle protection device to solve the current problem of directly using a needle to pierce the rubber stopper of a medicine bottle, causing the needle to become blunt.

A needle protection device in this solution includes a fixed ring, an adjustment mechanism and an installation tube and a guide tube that are connected in the axial direction; the guide tube is movably connected in the installation tube, and the fixed ring is sleeved on the installation tube; The adjustment mechanism includes a circular ring and an inverted cone-shaped cone head. The circular ring is fixedly connected to the bottom of the installation barrel. The inner wall of the fixed ring fits the outer wall of the larger end of the cone head. The larger end of the cone head is set There is a guide hole with gradually decreasing diameter, and the cone head is composed of multiple sector-shaped blocks that are rotationally connected to the ring.

The working principle and beneficial effects of this solution: When in use, move the fixed ring upward, and the fixed ring tightens the cone head so that the smaller end of the cone head becomes a needle point. Use a cone to pierce the rubber stopper of the medicine bottle, and then move the guide tube downward. The guide tube will expand the sector blocks outward through the guide hole of the cone, causing gaps to appear between multiple sector blocks. Pass the needle for sucking medicine through the gap between the guide tube and the sector block, and then suck the medicine in the medicine bottle. Through the needle protection device in this solution, the cone head is first used to pierce the rubber stopper of the medicine bottle, thus preventing the needle from piercing the rubber stopper and causing it to become blunt.

Further, the fixing ring is threadedly sleeved on the mounting barrel. The fixing ring is threaded on the installation barrel, and the fixing ring can be rotated to lift it. During the rotation, the fixing ring is threadedly connected to the installation barrel, so that the fixing ring can be fixed when rotating.

Furthermore, a gap is provided in the middle of the fixing ring. The setting of the notch makes it easy to observe the connection position between the fixing ring and the cone head.

Furthermore, the mounting barrel is also provided with a fixing mechanism. The fixing mechanism includes two sets of fastening components and a rotating block that is rotationally connected to the mounting barrel. The fastening component includes a fixed plate, a rotating rod and a fastening rod. The fixed plate is fixedly connected. At the upper end of the installation barrel, two rotating rods are rotationally connected to both sides of the rotating block. The end of the rotating rod away from the rotating block is rotationally connected to one end of the fastening rod, and the other end of the fastening rod is rotationally connected to the fixed plate. By rotating the rotating block, the rotation of the rotating block drives the rotating rod to rotate, and the rotation of the rotating rod drives the two fastening rods to rotate in opposite directions. The two fastening rods rotating in opposite directions can fix the needle protection device on the medicine bottle.

Further, the rotating block is threadedly connected to the mounting barrel. The rotating block is threadedly connected to the installation barrel, which can not only rotate the rotating block, but also play a fixed role, making it more convenient to use.

Furthermore, the rotating block is provided with a handle. The setting of the handle makes it easy to rotate the rotating block.

Further, the circular ring is provided with a connecting rod, and the circular ring is fixedly connected to the bottom of the installation barrel through the connecting rod; the sector-shaped block is provided with a connecting block, and the sector-shaped block is rotationally connected to the circular ring through the connecting block. . Through the arrangement of connecting rods and connecting holes, the connection between the ring and the installation barrel, and the sector block and the ring is more convenient.

Furthermore, the bottom of the guide tube is provided with chamfers. The chamfer facilitates installation and serves as a guide.

Description of drawings

Figure 1 is a schematic structural diagram of a needle protection device in Embodiment 1 of the present invention;

Figure 2 is a top view of Figure 1;

Figure 3 is a top view of the adjustment mechanism in Figure 1;

Figure 4 is a schematic structural diagram of a needle protection device in Embodiment 2 of the present invention.

Detailed ways

The following is further detailed through specific implementation methods:

The reference numbers in the drawings of the description include: guide tube 1, installation tube 2, fixed ring 3, chamfer 4, connecting rod 5, ring 6, connecting block 7, cone head 8, through hole 9, sector block 10, Guide hole 11, fastening rod 12, rotating rod 13, rotating block 14, handle 15, fixed plate 16.

Embodiment 1 is basically as shown in Figures 1 to 3: a needle protection device, including a fixed ring 3, an adjustment mechanism and an installation barrel 2 and a guide barrel 1 with a through hole 9 in the axial direction; the guide barrel 1 is threaded during installation. In the cylinder 2, the bottom of the guide cylinder 1 is provided with a chamfer 4; the fixing ring 3 is threaded on the installation cylinder 2; the adjustment mechanism includes a circular ring 6 and an inverted cone-shaped cone head 8. The circular ring 6 is provided with two The connecting rod 5 and the ring 6 are fixedly connected to the bottom of the installation barrel 2 through the two connecting rods 5; the inner wall of the fixed ring 3 fits the outer wall of the larger end of the cone head 8, and the end of the larger end of the cone head 8 is provided with an aperture. The gradually narrowing guide hole 11 and the cone head 8 are composed of eight sector blocks 10 that are rotatably connected to the ring 6. The top of the sector block 10 is provided with a connecting block 7. The sector block 10 is rotatably connected to the ring 6 through the connecting block 7. superior.

Embodiment 2 is basically as shown in Figure 4, a needle protection device, which is different from Embodiment 1 only in that: the mounting barrel 2 is also provided with a fixing mechanism, and the fixing mechanism includes two sets of fastening components and threaded connections. On the rotating block 14 on the installation barrel 2, two sets of fastening components are located on both sides of the rotating block 14. The fastening components include a fixed plate 16, a rotating rod 13 and a fastening rod 12. The fixed plate 16 is "┏" shaped and Fixedly connected to the upper end of the installation barrel 2, the two rotating rods 13 are rotationally connected to both sides of the rotating block 14. The end of the rotating rod 13 away from the rotating block 14 is rotationally connected to one end of the fastening rod 12. The fastening rod 12 and The rotating blocks 14 are each provided with a limiting slot for the rotating rod 13 to pass when rotating; the other end of the fastening rod 12 is rotationally connected to the fixed plate 16 .

Taking Embodiment 2 as an example, during use, rotate the fixing ring 3 clockwise until the fixing ring 3 fixes the eight sector blocks 10 together to form a complete inverted cone-shaped cone head 8, and press down the needle protection device until the cone head 8Pierce the rubber stopper of the medicine bottle. Then rotate the rotating block 14 counterclockwise through the handle 15. The rotating block 14 rotates to drive the rotating rod 13 to rotate. The rotating rod 13 drives the fastening rod 12 to rotate. Since the two fastening rods 12 turn in opposite directions, the needle can be removed from both sides of the medicine bottle. The protective device is fixed to the medicine bottle. Rotate the guide cylinder 1 clockwise, and the guide cylinder 1 moves downward to squeeze the guide hole 11 against the sector block 10 until the sector block 10 expands outward and forms a gap for the needle to pass through. The needle is passed through the through hole 9 of the guide tube 1 and can be directly entered into the medicine bottle through the gap between the sector blocks 10 to absorb the medicine, thereby avoiding the needle from being deformed or damaged.

The above are only embodiments of the present invention, and common knowledge such as the known specific structures and characteristics of the solutions are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the protection scope of the present invention and will not affect the implementation of the present invention. effectiveness and patented practicality. The scope of protection claimed in this application shall be based on the content of the claims, and the specific implementation modes and other records in the description may be used to interpret the content of the claims.

Claims (4)

1. A needle protection device, characterized in that: comprises a fixed ring, an adjusting mechanism, a mounting cylinder and a guide cylinder, wherein the axis direction of the mounting cylinder and the axis direction of the guide cylinder are all communicated; the guide cylinder is movably connected in the mounting cylinder, and the fixing ring is sleeved on the mounting cylinder; the adjusting mechanism comprises a circular ring and an inverted conical cone head, the circular ring is fixedly connected to the bottom of the mounting cylinder, the inner wall of the fixed ring is attached to the outer wall of the larger end of the cone head, the larger end of the cone head is provided with a guide hole with gradually reduced aperture, and the cone head consists of a plurality of sector blocks which are rotatably connected to the circular ring; the mounting cylinder is also provided with a fixing mechanism, the fixing mechanism comprises two groups of fastening components and a rotating block rotationally connected to the mounting cylinder, the fastening components comprise a fixing plate, rotating rods and fastening rods, the fixing plate is fixedly connected to the upper end of the mounting cylinder, the two rotating rods are respectively rotationally connected to two sides of the rotating block, one end of each rotating rod, far away from the rotating block, is rotationally connected to one end of the corresponding fastening rod, and the other end of each fastening rod is rotationally connected to the fixing plate; the rotating block is connected to the mounting cylinder in a threaded manner; the rotating block is provided with a handle; the circular ring is provided with a connecting rod and is fixedly connected to the bottom of the mounting cylinder through the connecting rod; the sector block is provided with a connecting block, and is rotationally connected to the circular ring through the connecting block;

when the conical head is used, the fixing ring is moved upwards, and the conical head is fastened by the fixing ring, so that the smaller end of the conical head is in a needle-tip shape; the rubber stopper of the medicine bottle is pierced by the conical head, and then the guide cylinder is moved downwards, and the sector blocks are outwards expanded by the guide cylinder through the guide holes of the conical head, so that gaps are formed among the sector blocks; the needle head for sucking medicine passes through the gap between the guide cylinder and the sector block, and then medicine in the medicine bottle is sucked.

2. A needle protection device according to claim 1, wherein: the fixed ring is in threaded sleeve connection with the mounting cylinder.

3. A needle protection device according to claim 2, wherein: the middle part of the fixed ring is provided with a notch.

4. A needle protection device according to claim 3, wherein: the bottom of the guide cylinder is provided with a chamfer angle.