CN215739322U - Puncture needle tube with plugging function and puncture needle - Google Patents

Abstract

The utility model belongs to the field of medical equipment, and particularly relates to a puncture needle tube with a plugging function. According to the puncture needle tube with the blocking function, the opening and closing device capable of opening and closing the needle seat channel is arranged on the needle seat of the puncture needle, so that the needle seat channel can be temporarily closed between two sampling operations when the puncture needle is used, excessive blood overflow or air enters the pleural cavity to form pneumothorax when the puncture needle is used is further avoided, the infection risk can be reduced, and the operation is convenient.

Description

Puncture needle tube with plugging function and puncture needle

Technical Field

The utility model belongs to the field of medical equipment, and particularly relates to a puncture needle tube with a plugging function and a puncture needle.

Background

In recent years, with the continuous development of minimally invasive and precise medicine, percutaneous puncture diagnosis and treatment are more and more advocated by doctors and patients, and percutaneous puncture biopsy diagnosis and various minimally invasive treatment means need a percutaneous puncture needle to establish a channel, so that the percutaneous puncture needle is more and more widely applied.

The common puncture needle comprises a needle tube and a needle core, wherein a needle seat is arranged at the upper part of the needle tube, a needle cap is arranged at the upper part of the needle core, the needle core is inserted into the needle tube, and the needle seat is in seamless fit with the needle cap or is connected with the needle cap through threads. When a biopsy gun is used for biopsy sampling, the needle core needs to be taken out, then the biopsy gun is inserted into the needle tube, the focus in a body is cut to sample the material, and a direct channel is established between the focus area in the body and the outside world through the needle tube in the process. When a doctor draws materials from the pathological tissue, the biopsy gun needs to be pulled out of the needle tube, the sample obtained from the gun is properly placed in the sample container, and then the biopsy gun is placed in the needle tube to repeat the previous operation and draw materials again. The time from the first operation of pulling out the biopsy gun from the needle tube to the second operation of inserting the biopsy gun into the needle tube is the time for directly opening the focus area in the body and the outside through the needle tube, and the longer the channel is opened, the higher the probability of infection and pneumothorax is, and the more the amount of bleeding is (when the needle tube has the condition of blood overflow). The doctor reinserts the needle core into the needle tube within the time period and then extracts the needle tube again, and the operation is complicated and has occupational exposure risks (the front end of the needle core is sharp, and the possibility of accidentally stabbing medical staff due to operation exists). Current lancet products do not address the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention aims to provide a puncture needle tube with a plugging function, the needle base of the needle tube is provided with an opening and closing device, and the needle tube channel can be opened and closed according to the requirements.

In order to achieve the purpose, the utility model adopts the following technical scheme: the puncture needle tube with the sealing function comprises a needle base, wherein an opening and closing device is arranged on the needle base and used for opening and closing a needle tube channel.

Furthermore, the opening and closing device comprises a sliding body, a slide way is arranged in the needle seat, the sliding body is arranged in the slide way of the needle seat and is in sliding connection with the slide way of the needle seat, a through hole and a blocking structure are arranged on the sliding body, and when the sliding body slides to one side along the slide way of the needle seat, the through hole can be over against the position of the needle tube channel, so that the needle tube is in an open state; when the sliding body slides to the other side along the slide way of the needle seat, the blocking part can be just opposite to the needle tube passage position, so that the needle tube is in a closed state.

Further, the blocking portion is a first protrusion disposed on the sliding body.

Furthermore, the number of the first bulges is two, and the first bulges are respectively and oppositely arranged on the upper side and the lower side of the sliding body.

Further, the heights of the two sides of the needle seat slide way are different, and the height of one side of the first protrusion is larger than the height of one side of the through hole.

Furthermore, still be provided with positioner on the slip body, positioner is including setting up second arch on the slip body, and correspond the second arch sets up the recess in the needle file outside.

Furthermore, the cross section of the second protrusion is trapezoidal, and the width of one side, away from the needle tube channel, of the second protrusion is larger than the width of one side, close to the needle tube channel, of the second protrusion.

Further, both sides of the sliding body are provided with handles.

According to the puncture needle tube with the blocking function, the opening and closing device capable of opening and closing the needle seat channel is arranged on the needle seat of the puncture needle, so that the needle seat channel can be temporarily closed between two sampling operations when the puncture needle is used, excessive blood overflow or air enters the pleural cavity to form pneumothorax when the puncture needle is used is further avoided, the infection risk can be reduced, and the operation is convenient.

The utility model also provides a puncture needle with a plugging function, which comprises the puncture needle tube, so that the same effects are achieved.

Drawings

FIG. 1 is a schematic structural view showing a closed state of an opening/closing device for a needle holder;

FIG. 2 is a schematic structural view showing the open state of the opening and closing means of the needle holder;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is a schematic structural view of the closed state when the first protrusions are oppositely arranged on the upper and lower sides of the slider;

FIG. 6 is a schematic structural view of the first protrusion being opened when the first protrusion is disposed on the upper and lower sides of the slider;

FIG. 7 is a perspective view of FIG. 1;

FIG. 8 is a perspective view of FIG. 2;

FIG. 9 is a top view of FIG. 8;

in the above figures: 1-a needle seat; 2-an opening and closing device; 21-a sliding body; 22-a through hole; 23-a first projection; 24-a second projection; 25-handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The common puncture needle comprises a needle tube and a needle core, wherein a needle seat is arranged at the upper part of the needle tube, a needle cap is arranged at the upper part of the needle core, the needle core is inserted into the needle tube, and the needle seat and the needle cap are in seamless connection or are in threaded connection. When the puncture needle is used for biopsy, the puncture needle is integrally inserted into a part needing biopsy, then the needle core is taken out, a channel is established between the focus part in vivo and the outside through the needle tube at the moment, and a biopsy gun can be used for taking materials through the channel. When the doctor takes out the biopsy sample, need to settle the sample properly and draw materials again after, probably have blood to spill over between two operations, perhaps the air gets into pleural cavity and forms pneumothorax, or increases infection risk scheduling problem.

In order to solve the problems, the utility model provides a puncture needle tube with a plugging function, which comprises a needle base 1, wherein an opening and closing device 2 is arranged on the needle base 1, and the opening and closing device 2 is used for opening and closing a needle base channel.

The opening and closing device 2 can be a cover plug arranged at the top of the needle seat 1, the cover plug is plugged into the top of the needle seat 1 after the first operation is finished, the needle sleeve channel is closed, and the needle seat channel can be opened by opening the cover plug when the second operation is carried out. In addition, the opening and closing device 2 can also be a rotating piece arranged in the needle seat 1, a rotating channel is arranged in the middle of the needle seat 1, the rotating piece is connected with the needle seat 1 through a rotating shaft and can rotate along the rotating channel, during puncture, the rotating piece rotates on the outer side of the needle seat 1, the channel is in an open state, and after the first operation is finished, the rotating piece is rotated to a position just opposite to the needle sleeve channel, so that the needle seat channel can be closed.

Through set up switching device 2 that can open and close the needle file passageway on needle file 1, when using the pjncture needle, can close the needle file passageway temporarily between twice operation, and then the blood loss is too much when avoiding using the pjncture needle, perhaps the air gets into the pleural cavity and forms pneumothorax to reduce infection risk scheduling problem.

In another embodiment, the present invention provides an opening and closing device 2 with another structure, as shown in fig. 1 and fig. 2, the opening and closing device 2 includes a sliding body 21, as shown in fig. 3 and fig. 4, a sliding way is provided in the needle holder 1, the sliding way is generally perpendicular to the axis of the needle holder 1, the sliding body 21 is provided in the sliding way of the needle holder 1 and is connected with the sliding way of the needle holder 1 in a sliding manner, a through hole 22 and a blocking portion are provided on the sliding body 21, when the sliding body 21 slides to one side along the sliding way of the needle holder 1, the through hole 22 can be arranged opposite to the needle holder channel, so that the needle tube is in an open state; when the sliding body 21 slides to the other side along the slide way of the needle base 1, the blocking part can be arranged right opposite to the channel, so that the needle tube is in a closed state.

As shown in fig. 3, when the sliding body 21 slides to the right along the slideway of the needle seat 1, the through hole 22 can be arranged right opposite to the channel, so as to open the channel; as shown in fig. 4, when the sliding body 21 slides to the left along the slideway of the needle seat 1, the blocking part can be arranged right opposite to the channel, so as to close the channel.

The blocking portion is a first protrusion 23 provided on the sliding body 21. The first protrusion 23 may be provided on the upper side of the sliding body 21, as shown in fig. 3 and 4, when the needle channel is closed, the first protrusion 23 is disposed opposite to the needle channel, and the first protrusion 23 is in hard contact with the needle channel to just seal the needle channel. Of course, the first protrusion 23 may also be provided at the lower side of the sliding body 21. In a specific embodiment, as shown in fig. 5 and 6, the first protrusions 23 are two and are oppositely disposed on the upper and lower sides of the sliding body 21. When the blocking portion is arranged opposite to the channel, the first bulges 23 positioned at the upper side and the lower side respectively seal the needle sleeve channel in the upper direction and the lower direction, so that the needle seat channel is closed.

Further, in order to make the first protrusion 23 only form hard contact when contacting with the needle seat channel, reducing abrasion, and simultaneously facilitating the sliding body 21 to move along the slide way of the needle seat, when specifically setting, the height of the slide way of the needle seat 1 on one side of the first protrusion 23 is larger than the height of the slide way around the through hole of the needle seat 1. As shown in fig. 3 and 4, namely, the height of the right side of the slideway of the needle seat 1 is larger than the height of the slideway of the needle seat 1 opposite to the periphery of the through hole. When the first protrusion 23 is disposed on a single side of the sliding body 21, only the height of the first protrusion 23 on the side can be increased, and when the first protrusion 23 is disposed on both sides of the sliding body 21, the heights of the upper and lower sides of the slideway of the needle hub 1 are increased.

In order to stably arrange the through hole 22 opposite to the needle seat channel when the needle seat channel is opened, as shown in fig. 2 and 3, the sliding body 21 is further provided with a positioning device, and the positioning device comprises a second protrusion 24 arranged on the sliding body 21 and a groove corresponding to the second protrusion 24 and arranged outside the needle seat 1. In particular, when the cross section of the second protrusion 24 is trapezoidal, the width of the second protrusion 24 away from the needle holder 1 is greater than the width of the second protrusion 24 close to the needle holder 1, as shown in fig. 9, that is, the width of the lower outer side of the second protrusion 24 is greater than the width of the upper inner side.

For the convenience of the doctor's operation, handles 25 are provided on both sides of the sliding body 21. Meanwhile, the arrangement of the handle 25 can also generate a limiting effect on the sliding of the sliding body 21.

The opening and closing device in the embodiment is arranged in the middle of the needle base 1, so that a doctor can complete the operation at any time by only holding the hand of the needle base during the puncture operation, and the operation is very convenient and fast.

In addition, another embodiment of the utility model also provides a puncture needle, which comprises the needle seat in any embodiment.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.

Claims (9)

1. The puncture needle tube with the sealing function comprises a needle seat, and is characterized in that an opening and closing device is arranged on the needle seat and used for opening and closing a needle tube channel.

2. The puncture needle tube according to claim 1, wherein the opening and closing device comprises a sliding body, a slide way is arranged in the needle base, the sliding body is arranged in the slide way of the needle base and is connected with the slide way of the needle base in a sliding way, a through hole and a blocking part are arranged on the sliding body, and when the sliding body slides to one side along the slide way of the needle base, the through hole can be over against the position of the needle tube channel, so that the needle tube is in an open state; when the sliding body slides to the other side along the slide way of the needle seat, the blocking part can be just opposite to the needle tube passage position, so that the needle tube is in a closed state.

3. The puncture needle cartridge of claim 2, wherein the blocking portion is a first protrusion provided on the sliding body.

4. The puncture needle cartridge according to claim 3, wherein the first protrusions are provided in two numbers, and are disposed on the upper and lower sides of the sliding body, respectively.

5. The needle and cannula of claim 4, wherein the needle hub slide track has two sides of different heights, the height on one side of the first protrusion being greater than the height on one side of the through hole.

6. The needle and cannula of claim 5, wherein said sliding body further comprises a positioning means, said positioning means comprising a second protrusion disposed on said sliding body and a groove disposed on the outside of said needle hub corresponding to said second protrusion.

7. The needle and cannula of claim 6 wherein said second projection is trapezoidal in cross-section, said second projection having a width on a side distal from said cannula passageway that is greater than a width on a side of said second projection proximal to said cannula passageway.

8. The needle and cannula of claim 7, wherein said sliding body is provided with a handle on both sides.

9. A puncture needle having a blocking function, comprising the puncture needle cylinder according to any one of the preceding claims.

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