阅读说明：本技术 一种能够避免针道种植转移的穿刺针 (Puncture needle capable of avoiding needle channel planting transfer ) 是由 李伟 于 2020-04-09 设计创作，主要内容包括：本发明公开了医疗器械技术领域的一种能够避免针道种植转移的穿刺针,包括针杆和针柄,所述针杆的外壁套接有滑环,所述滑环的外壁固定安装有充气嘴,所述滑环的内部设置有滑环气道,所述滑环的顶壁粘接有柔性膜套,所述柔性膜套套接在针杆的外壁,所述柔性膜套的内壁顶端与针杆顶端近针尖的外壁粘接,本装置进针、退针时,均是柔性膜套与针道壁软组织接触,而针杆始终不与针道壁软组织接触,避免针杆、针尖和柔性膜套在针道内滑行而可能造成的针道种植转移。(The invention discloses a puncture needle capable of avoiding needle track planting transfer, which belongs to the technical field of medical instruments and comprises a needle rod and a needle handle, wherein the outer wall of the needle rod is sleeved with a sliding ring, the outer wall of the sliding ring is fixedly provided with an inflating nozzle, the inside of the sliding ring is provided with a sliding ring air channel, the top wall of the sliding ring is bonded with a flexible film sleeve, the flexible film sleeve is sleeved on the outer wall of the needle rod, the top end of the inner wall of the flexible film sleeve is bonded with the outer wall, close to a needle point, of the top end of the needle rod, when the needle is inserted and withdrawn, the flexible film sleeve is in contact with soft tissue of a needle track wall, the needle rod is not in contact with the soft tissue of the needle track wall all the time, and the needle rod.)

1. A puncture needle capable of avoiding needle track planting transfer, comprising a needle shaft (100) and a needle handle (110), characterized in that: the outer wall of the needle rod (100) is sleeved with a sliding ring (200), an inflating nozzle (210) is fixedly mounted on the outer wall of the sliding ring (200), a sliding ring air passage (220) is arranged inside the sliding ring (200), a flexible film sleeve (230) is bonded to the top wall of the sliding ring (200), the flexible film sleeve (230) is sleeved on the outer wall of the needle rod (100), and the top end of the inner wall of the flexible film sleeve (230) is bonded to the outer wall, close to the needle point, of the top end of the needle rod (100).

2. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: when the needle rod (100) punctures, the flexible film cover (230) of the outer wall of the needle rod (100) is contacted with the soft tissue of the needle channel wall, and the needle rod (100) is not contacted with the soft tissue of the needle channel wall all the time.

3. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: the inner diameter value of the flexible film sleeve (230) is larger than the outer diameter value of the needle rod (100), a cavity is arranged between the flexible film sleeve (230) and the needle rod (100), and the slip ring air channel (220) is communicated with the cavity arranged between the flexible film sleeve (230) and the needle rod (100).

4. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: the flexible film sleeve (230) is an elastic film.

5. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: the flexible film sleeve (230) is inflated through the inflating nozzle (210), so that the flexible film sleeve (230) is inflated and expanded to be separated from the needle rod (100).

6. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: the flexible film sleeve (230) retracts under the inflation state, the needle rod (100) retracts from the inflation cavity and the center of the sliding ring (200), the needle rod (100) pulls the flexible film sleeve (230) to retract from the center of the sliding ring (200) in the manner of turning the stuffing, and the needle rod (100) and the flexible film sleeve (230) do not slide in the needle channel.

7. A puncture needle capable of avoiding needle track planting transfer according to claim 1, wherein the cross section of the lower end of the flexible membrane sleeve (230) is one of trapezoid, L type or hemisphere.

8. A puncture needle capable of preventing needle track implant transfer according to claim 1, wherein: the charging connector (210) and the slip ring (200) are both composed of one or more structures of rubber, resin, silica gel, metal or plastic.

Technical Field

The invention discloses a puncture needle capable of avoiding needle track planting transfer, and particularly relates to the technical field of medical instruments.

Background

At present, when the puncture operation is carried out in medicine, particularly when the puncture is carried out on malignant tumor focus or infection focus, a puncture needle is polluted because tumor cells or pathogenic microorganisms are adhered to a needle point or a needle rod, when the puncture needle is withdrawn, the polluted puncture needle is withdrawn from a needle channel, the adhered tumor cells or pathogenic microorganisms are likely to drop in soft tissues of the wall of the needle channel of a body, and the implantation metastasis of the needle channel is generated.

In order to reduce the probability of needle track planting metastasis as much as possible, the following 2 methods are adopted clinically at present. Method 1: the treatment means is used in the needle channel in a preventive way when the needle is withdrawn, for example, absolute ethyl alcohol is injected, the needle channel is ablated in a preventive way when the needle is withdrawn after ablation, and the like, so that tumor cells or pathogenic microorganisms which possibly fall off in the needle channel are killed as much as possible; however, this method is only used preventively, and although the probability of needle track planting metastasis can be reduced significantly, it cannot completely prevent needle track planting metastasis. The 2 nd method: by using the coaxial technology and the trocar, the puncture needle possibly adhered with tumor cells or pathogenic microorganisms is retracted in the outer cannula, so that the direct contact between the puncture needle and soft tissues of the needle channel wall is avoided, and the implantation metastasis is avoided. However, when tumor cells or pathogenic microorganisms are adhered to the outer cannula, the possibility of implantation metastasis still occurs in the needle track when the outer cannula is withdrawn.

Disclosure of Invention

The invention aims to provide a puncture needle capable of avoiding needle track planting transfer so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can avoid pjncture needle that needle track planted and shift, includes needle bar and needle handle, the outer wall of needle bar has cup jointed the sliding ring, the outer wall fixed mounting of sliding ring has the charging connector, the inside of sliding ring is provided with the sliding ring air flue, the roof of sliding ring bonds and has flexible membrane cover, flexible membrane cover cup joints the outer wall at the needle bar, the inner wall top of flexible membrane cover bonds with the outer wall of needle bar.

Preferably, when the needle rod punctures, the flexible film sleeve on the outer wall of the needle rod is contacted with the soft tissue of the needle channel wall, and the needle rod is not contacted with the soft tissue of the needle channel wall all the time.

Preferably, the inner diameter value of the flexible film sleeve is larger than the outer diameter value of the needle rod, a cavity is formed between the flexible film sleeve and the needle rod, and the slip ring air passage is communicated with the cavity formed between the flexible film sleeve and the needle rod.

Preferably, the flexible film sleeve is an elastic film.

Preferably, the flexible film sleeve is inflated through an inflation nozzle, so that the flexible film sleeve is inflated and expanded to be separated from the needle rod.

Preferably, the needle is withdrawn from the needle channel under the inflation state of the flexible film sleeve, the needle rod withdraws from the center of the inflation cavity and the slip ring, the needle rod drives the flexible film sleeve to withdraw from the center of the slip ring in a mode of turning the stuffing, and the needle rod and the flexible film sleeve do not slide in the needle channel.

Preferably, the cross section of the lower end of the flexible membrane sleeve is one of trapezoid, L type or hemisphere type.

Preferably, the charging connector and the slip ring are made of one or more structures of rubber, resin, silica gel, metal or plastic.

Compared with the prior art, the invention has the beneficial effects that: this device is provided with flexible membrane cover at the outer wall of needle bar, during the needle insertion, flexible membrane cover outer wall and needle track wall soft tissue contact, and the needle bar does not contact with needle track wall soft tissue, during withdrawing the needle, through aerifing flexible membrane cover inside, make the inner wall and the needle bar outer wall separation of flexible membrane cover, hand sliding ring is fixed, withdraw the needle backward, the needle bar withdraws from sliding ring central authorities, drive flexible membrane cover invagination upset simultaneously, the inner chamber of flexible membrane cover is got into in the upset of the flexible membrane cover of flexible membrane cover with needle track wall soft tissue contact, and withdraw from sliding ring central authorities, avoid the needle bar then, needle point and flexible membrane cover slide in the needle track and the needle track that probably causes plants the transfer.

Drawings

FIG. 1 is a front view of a transfer needle of the present invention;

FIG. 2 is a front cross-sectional view of the transfer needle of the present invention;

fig. 3 is a schematic view of the inflation state of the transfer puncture needle of the present invention.

In the figure: 100 needle shaft, 110 needle shaft, 200 slip ring, 210 inflation nozzle, 220 slip ring air channel, 230 flexible film sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a puncture needle capable of avoiding needle track planting transfer, wherein a flexible film sleeve is contacted with soft tissue of a needle track wall when the needle is inserted and withdrawn, and a needle rod is not contacted with the soft tissue of the needle track wall all the time, so that the needle track planting transfer possibly caused by the sliding of the needle rod, a needle point and the flexible film sleeve in the needle track is avoided, and the puncture needle comprises a needle rod 100 and a needle handle 110, and please refer to fig. 1 and fig. 2;

referring to fig. 1 and 2 again, the outer wall of the needle stick 100 is sleeved with a slip ring 200, the outer wall of the slip ring 200 is fixedly provided with an inflating nozzle 210, the inner part of the slip ring 200 is provided with a slip ring air passage 220, the top wall of the slip ring 200 is bonded with a flexible film sleeve 230, the flexible film sleeve 230 is sleeved on the outer wall of the needle stick 100, the top end of the inner wall of the flexible film sleeve 230 is bonded with the outer wall of the needle stick 100, the slip ring 200 inflates the flexible film sleeve 230 through the slip ring air passage 220, the flexible film sleeve 230 is used for preventing the needle stick 100 from contacting with the needle track, the flexible film sleeve 230 is an elastic mold, the surface is smooth and inelastic during inflation, when the flexible film sleeve 230 is not inflated, wrinkles are formed on the surface, the flexible film sleeve 230 is inflated through the inflating nozzle 210, so that the flexible film sleeve 230 is inflated and expanded to be separated from the needle stick 100, the needle stick 100 retracts from the center of the inflating cavity and the slip ring 200, the needle stick 100 retracts from the center of the slip ring 200 in an inward turning manner, and the needle stick 100 and the flexible film sleeve 100 and the soft needle track is always in contact with a plastic or a plastic needle track, the soft needle stick, or a plastic needle head, a variety of a plastic or a plastic needle head, a plastic, a needle head, a plastic needle;

referring to fig. 3, the inner diameter of the flexible film sleeve 230 is greater than the outer diameter of the needle shaft 100, a cavity is formed between the flexible film sleeve 230 and the needle shaft 100, and the slip ring air passage 220 is communicated with the cavity formed between the flexible film sleeve 230 and the needle shaft 100.

The working principle is as follows: when a needle is inserted, the movable sliding ring 200 moves towards the needle handle 110, so that the flexible membrane sleeve 230 is tightly stretched on the outer wall of the needle rod 100, the flexible membrane sleeve 230 slides along with the needle rod 100 through the needle channel to be in the machine body, the flexible membrane sleeve 230 is in contact with soft tissue on the wall of the needle channel, after the puncture related operation is completed, when the needle is ready to be withdrawn, the movable sliding ring 200 is far away from the needle handle 110, air inflation or liquid filling is carried out through the air inflation nozzle 210, the air inflation cavity is expanded and maintains certain air pressure or hydraulic pressure, the flexible membrane sleeve 230 is separated from the needle rod 100 and is propped open and attached to the wall of the needle channel under the action of the air pressure or the hydraulic pressure, when the needle is withdrawn, the flexible membrane sleeve 230 is expanded and tightly attached to the soft tissue on the wall of the needle channel of the machine body due to the continuous action of the air pressure or the hydraulic pressure, then the. Meanwhile, when the needle rod 100 is withdrawn, the needle tip can drive the flexible membrane sleeve 230 to withdraw from the center of the inflation fluid cavity and the slip ring 200 in a manner of invagination and inversion. Because the flexible film sleeve 230 does not slide out of the needle channel, the needle channel planting transfer caused by the sliding of the flexible film sleeve 230 in the needle channel can be avoided when the flexible film sleeve 230 is polluted.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the various embodiments disclosed herein may be used in combination in any number of ways, provided that no structural conflict exists, such as: the inflation can be replaced by a liquid-filled mode, or a rigid support is arranged in the needle bar to replace the inflation so that the flexible film sleeve is separated from the needle bar, or an inelastic flexible film is selected. The invention can be correspondingly changed and used for various puncture needles, and can be combined with different needle core and needle handle structures to realize puncture operations with different purposes. The lack of exhaustive description of these combinations in this specification is merely in the form of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.