Needle head of vortex channel flushing needle, vortex channel flushing needle manufactured by same and manufacturing mold of vortex channel flushing needle

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a vortex channel flushing needle head, a flushing needle made of the vortex channel flushing needle head and a manufacturing mold of the vortex channel flushing needle head. According to the vortex channel flushing needle head, at least one spiral channel is arranged on the needle head, and the spiral channels are spirally distributed on the outer wall of the needle head, so that an internal flow channel of the needle head is communicated with the outside, and the internal flow channel of the needle head is not communicated with the outer end part. Compared with the prior art, the tooth pulp opening device has the beneficial effects that the vortex channel is arranged, so that water flowing out of the vortex channel needs to be in a spiral shape, and after the water enters a pulp opening hole of a tooth, the spiral movement speed of the water is higher, and large tooth scraps are convenient to carry out.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a vortex channel flushing needle, a flushing needle made thereof, and a manufacturing mold thereof. Background Art

[0002] At present, in order to make the syringe tube bend along the root canal wall without obstruction during use and reach the required position for flushing, suction, or filling, the plastic needle can also be bent at a certain angle near the tube root before use. Chinese Patent No. CN216090855U discloses a plastic needle, which is relatively convenient.

[0003] However, the flushing water cannot perform a spiral motion. For this reason, Chinese Patent No. CN220141854U discloses a root canal flushing needle, which can make the flushing water perform a spiral motion, which is relatively convenient.

[0004] However, the speed of its spiral motion is insufficient, and large dentin debris and foreign objects (collectively referred to as debris below) cannot be carried out. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is: how to design a vortex channel flushing needle to increase the speed of spiral motion.

[0006] The specific solutions are as follows:

[0007] A vortex channel flushing needle head is provided with at least one spiral channel, and the spiral channel is spirally distributed on the outer wall of the needle head, so that the internal flow channel of the needle head is communicated with the outside, and the internal flow channel of the needle head is not communicated with the outer end.

[0008] The needle head is provided with two spiral channels: a first vortex channel and a second vortex channel, and the spiral channels are symmetrically distributed on the side wall of the needle head. One of the spiral channels coincides with the other spiral channel after rotating 180° around the axis of the needle head, and the spiral directions of the two spiral channels are the same.

[0009] The outer end of the needle head is a smooth curved surface.

[0010] A vortex channel flushing needle includes a needle body, and the front section of the needle body is the above-mentioned vortex channel flushing needle head.

[0011] The vortex channel flushing needle is a plastic product.

[0012] A manufacturing mold for a vortex channel flushing needle includes a lower mold and an upper mold. The upper end surface of the inner cavity of the upper mold is a smooth curved surface matching the outer end of the needle head. The needle body of the above-mentioned vortex channel flushing needle is located in the lower mold, and the needle head is located in the upper mold.

[0013] A manufacturing method of a vortex channel flushing needle, characterized in that: using the above manufacturing mold, comprising the following steps:

[0014] S10. Manufacturing a semi-finished product of the vortex channel flushing needle: The front section of the semi-finished product is the needle tip, the internal flow channel of the needle tip penetrates to the outer end of the needle tip, and the outer wall of the needle tip is provided with the same number of vertical grooves as the spiral channels. The vertical grooves connect the internal flow channel of the needle tip with the outside world, and the vertical grooves extend outward to the outer end of the needle tip;

[0015] S20. Manufacturing a finished product of the vortex channel flushing needle: including steps S20 - S22:

[0016] S21. Placing: Placing the semi-finished product into the lower mold of the manufacturing mold, so that the needle tip is exposed above the lower mold;

[0017] S22. Thermoplastic forming: Heating the semi-finished product, pressing the upper mold downward and rotating the upper mold at the same time, the vertical grooves are processed into spiral channels, the outer end of the needle tip is processed into a smooth curved surface, and the advancement of the internal flow channel at the outer end face of the needle tip is blocked.

[0018] The length of the vertical groove is not greater than 3 mm, and the width is 0.05 - 0.4 mm.

[0019] Beneficial effects: Compared with the prior art, the utility model is provided with a vortex channel, and the water coming out of it needs to be spiral. After entering the pulp chamber opening of the tooth, the speed of the spiral movement of the water is relatively large, and large dental debris is conveniently carried out. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the semi-finished product of the utility model.

[0021] Figure 2 is Figure 1 an enlarged schematic diagram of the upper part.

[0022] Figure 3 is a three-dimensional schematic diagram of the upper part of the semi-finished product of the utility model.

[0023] Figure 4 is a schematic diagram of the finished product of the utility model.

[0024] Figure 5 is Figure 4 an enlarged schematic diagram of the upper part.

[0025] Figure 6 is a three-dimensional schematic diagram of the upper part of the finished product of the utility model.

[0026] Figure 7 is a schematic diagram of the mold of the utility model. Detailed Description of the Invention

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention.

[0028] As Figures 4 - 6 , a vortex channel flushing needle includes a needle body 10. The front section of the needle body 10 is a needle tip 11. At least one spiral channel 20 is provided on the needle tip 11. The spiral channel 20 is spirally distributed on the side wall of the needle tip 11, so that the internal flow channel 12 of the needle tip 11 is communicated with the outside, and the internal flow channel 12 of the needle tip 11 is not communicated with the outer end 13.

[0029] Two spiral channels 20 are provided on the needle tip 11: a first vortex channel 21 and a second vortex channel 22. The spiral channels 20 are symmetrically distributed on the outer wall of the needle tip 11. One of the spiral channels 20 coincides with the other spiral channel 20 after rotating 180° around the axis of the needle tip 11, and the spiral directions of the two spiral channels 20 are the same.

[0030] In order to facilitate entry into the pulp chamber orifice of the tooth, the outer end 13 of the needle tip 11 is a smooth curved surface.

[0031] In order to facilitate the soft bending of the needle tube and easy entry into the irregular root canal, the vortex channel flushing needle is made of plastic.

[0032] As Figure 7 , a manufacturing mold for a vortex channel flushing needle includes a lower mold 81 and an upper mold 82. The upper end surface 83 of the inner cavity of the upper mold 82 is a smooth curved surface matching the outer end 13 of the needle tip 11.

[0033] The needle body 10 is located in the lower mold 81, and the needle tip 11 is located in the upper mold 82.

[0034] As Figures 1 - 7 , a manufacturing method for a vortex channel flushing needle, using the above manufacturing mold, includes the following steps:

[0035] S10. Produce a semi-finished product of the vortex channel flushing needle: The front section of the semi-finished product is the needle tip 11. The internal flow channel 12 of the needle tip 11 penetrates to the outer end 13 of the needle tip 11. The outer wall of the needle tip 11 is provided with the same number of vertical grooves 120 as the spiral channels 20. The vertical grooves 120 communicate the internal flow channel 12 of the needle tip 11 with the outside, and the vertical grooves 120 extend outward to the outer end 13 of the needle tip 11; the length of the vertical groove 120 is not greater than 3 mm, and the width is 0.05 - 0.4 mm;

[0036] S20. Produce a finished product of the vortex channel flushing needle: It includes the following steps:

[0037] S21. Place: Place the semi-finished product into the lower mold 81 of the manufacturing mold, so that the needle tip 11 is exposed above the lower mold 81;

[0038] S22. Thermoplastic forming: Heat the semi-finished product, press the upper mold 82 downward (see the downward arrow in Figure 7 ), and at the same time rotate the upper mold 82 (see the rotation arrow in Figure 7 ). The vertical groove 120 is processed into a spiral channel 20 by a melting head, and the outer end 13 of the needle head 11 is processed into a smooth curved surface, and the advancement of the internal flow channel 12 at the outer end face of the needle head 11 is blocked.

[0039] The processing is completed.

[0040] The specific working process of the vortex channel flushing needle is as follows:

[0041] During use, after the grooved flushing needle enters the pulp chamber opening of the tooth, the water undergoes a spiral motion after flowing through the spiral channel 20. After colliding with the wall of the pulp chamber opening, due to inertia, the speed of the spiral motion of the water is relatively high, and large tooth debris is conveniently carried out.

[0042] For other details, refer to the prior art and will not be elaborated here.

[0043] The technical means disclosed in the solution of the present utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A vortex channel flushing needle tip, characterized in that: The needle (11) is provided with at least one spiral channel (20), and the spiral channel (20) is spirally distributed on the outer wall of the needle (11), so that the internal flow channel (12) of the needle (11) is communicated with the outside, and the internal flow channel (12) of the needle (11) is not communicated with the outer end portion (13).

2. The vortex channel flushing needle tip according to claim 1, characterized in that: The needle (11) is provided with two spiral channels (20): a first vortex channel (21) and a second vortex channel (22). The spiral channels (20) are symmetrically distributed on the side wall of the needle (11). After one of the spiral channels (20) rotates 180° around the axis of the needle (11), it coincides with the other spiral channel (20), and the spiral directions of the two spiral channels (20) are the same.

3. The vortex channel flushing needle tip according to claim 2, characterized in that: The outer end portion (13) of the needle (11) is a smooth curved surface.

4. A vortex channel flushing needle, characterized in that: It includes a needle body (10), and the front section of the needle body (10) is the vortex channel flushing needle head as described in claim 3.

5. The vortex channel flushing needle according to claim 4, characterized in that: The vortex channel flushing needle is a plastic product.

6. A manufacturing die for a vortex channel flushing needle, characterized in that: It includes a lower mold (81) and an upper mold (82). The upper end surface (83) of the inner cavity of the upper mold (82) is a smooth curved surface matching the outer end portion (13) of the needle (11). The needle body (10) of the vortex channel flushing needle as described in claim 4 is located in the lower mold (81), and the needle head (11) is located in the upper mold (82).

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