CN111759424A

CN111759424A - Trocar

Info

Publication number: CN111759424A
Application number: CN202010713553.7A
Authority: CN
Inventors: 张忠民
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-10-13

Abstract

The invention relates to the technical field of medical instruments, in particular to a trocar capable of penetrating into the skin. The trocar comprises a trocar core and an outer needle, wherein a trocar cavity used for containing a needle body is arranged in the outer needle, after the needle body is arranged in the trocar cavity, the trocar core is inserted into the trocar cavity from the rear end of the trocar cavity to push the needle body to move out from the front end of the trocar cavity, and the trocar core and the outer needle are respectively marked with scales along the length direction. The trocar can embed a plurality of line bodies at one time to enter the subcutaneous part of the acupuncture point, and the plurality of line bodies can have specific spacing distance.

Description

Trocar

Technical Field

The invention relates to the technical field of medical instruments, in particular to a trocar capable of penetrating into the skin.

Background

Currently, the steps of embedding acupuncture points (target points) (thread embedding) are as follows: firstly, the trocar is punctured into the subcutaneous part of the acupuncture point (target point), then the inner needle in the trocar is pulled out, the absorbable protein line body is put into the outer needle of the trocar, and then the needle core is inserted into the outer needle to push the line body, so that the line body is pushed into the subcutaneous part of the acupuncture point (target point). The length of a needle body of a general trocar is 6cm, and the length of an implanted line body is 2-5 cm. Practice shows that the length of the implanted line body is 2-5 cm, red swelling, induration and pain are easy to occur, and the length of the line body is less than 2cm, so that the curative effect is not good. The above problems are difficult to solve with the structure of the existing trocar and the existing implanting step.

Disclosure of Invention

In order to solve the problems that when the implanted line body is long, red swelling, induration and pain are easy to appear, and when the implanted line body is short, the curative effect can not be achieved, the inventor initiates a new implantation step: implanting a plurality of line bodies (most preferably three line bodies) into the subcutaneous part of an acupuncture point (target point), wherein the length of each line body is 0.5-0.8 cm, and a certain interval is formed among the plurality of line bodies. Practice shows that the embedding step can ensure the curative effect and avoid red swelling, induration and pain. But has a problem: the prior trocar is difficult to implant a plurality of line bodies simultaneously, and the plurality of line bodies have specific spacing distance, so the trocar needs to be implanted for a plurality of times, not only the operation times of a doctor are more, but also a patient suffers from a plurality of stabbing pain.

The invention discloses a trocar which can embed a plurality of line bodies into acupuncture points subcutaneously at one time and can ensure that the plurality of line bodies have specific spacing distance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the trocar comprises a trocar core and an outer needle, wherein a needle cavity used for containing a needle body is arranged in the outer needle, the needle core is inserted into the needle cavity from the rear end of the needle cavity after the needle body is filled into the needle cavity, the needle body is pushed to move out from the front end of the needle cavity, and the needle core and the outer needle are respectively marked with scales along the length direction.

Further, the needle core comprises a needle core body and a handle which are connected together, and the scale of the needle core is marked on the needle core body; the outer needle comprises an outer needle body and a handle, the handle is connected with the rear end of the outer needle body, the needle cavity is opened from the front end of the outer needle body to the rear end of the handle, scales on the outer needle are marked on the outer needle body, and the length of the outer needle body is 10-16 cm.

Further, the outer needle body is 12cm long.

Further, the handle of the outer needle is made of transparent material, so that after the needle core body is inserted into the needle cavity from the rear end of the needle cavity, the scale on the needle core body positioned in the handle of the outer needle can be seen through the transparent handle.

Further, the handle of the outer needle is provided with double wings.

Furthermore, the handle of the needle core is provided with double wings, the needle core body is inserted into the needle cavity from the rear end of the needle cavity to the front end of the needle cavity, and the handle of the needle core is in contact with the handle of the outer needle to be spliced to form a butterfly-shaped combined handle.

Further, the handle of the outer needle is 4.5-6 cm long.

Further, the handle of the outer needle is 5cm long.

Furthermore, the handle of the needle core is 2-3 cm long.

Further, the handle of the needle core is 2cm long.

Further, the front end of the needle core is hemispherical.

Has the advantages that: a user pierces the outer needle into the skin, the depth of the outer needle penetrating into the skin is accurately judged through the scale on the outer needle, and then the needle core is pushed, so that the needle core pushes the wire body to move out from the front end of the needle cavity to enter the skin from the rear end of the needle cavity; after one section of line body is completely pushed out, the scales on the outer needle are observed, the outer needle is pulled out by a required distance accurately, so that the distance between the front end of the needle cavity and the previous section of line body is accurately controlled, then the needle core is pushed while observing the scales on the needle core again, the next section of line body is also completely pushed out, and thus a specific distance is reserved between the two sections of line bodies which are pushed out; and the process is continued, so that all the line bodies can be pushed out, and the distance between every two line bodies can be accurately controlled.

Drawings

FIG. 1 is a block diagram of a trocar;

FIG. 2 is a block diagram of the outer needle;

FIG. 3 is a right side view of the outer needle;

FIG. 4 is a block diagram of the hub;

FIG. 5 is an enlarged view at A in FIG. 1;

FIG. 6 is a front view of a trocar.

Detailed Description

The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention.

As shown in fig. 1, the trocar includes a core 1 and an outer needle 2. The outer needle 2 is shown in fig. 2 and comprises an outer needle body 21, and the front end of the outer needle body 21 is a needle head 23. The rear end of the outer needle body 21 is connected with a handle 22, the handle 22 is 5cm long and is provided with two wings. As shown in fig. 3, a needle chamber 5 is formed in the outer needle 2, and the needle chamber 5 extends from the needle tip 23 to the rear end of the handle 22, and a diamond-shaped needle core inlet 26 is formed at the rear end of the handle 22. The stylet 1 comprises a solid stylet body 12 as shown in fig. 4, the rear end of the stylet body 12 is inserted into an insertion hole on a non-circular part 13 at the front end of a handle 11, and the cross section of the non-circular part 13 is diamond-shaped. The handle is provided with two wings and is 2cm long. The needle core body 12 is inserted into the outer needle body 21 from the needle core inlet 26, the non-circular part 13 enters the needle cavity rear section 25 (see fig. 3) with a rhombic cross section, the needle cavity rear section 25 is limited by the needle cavity rear section 25 and cannot rotate around the longitudinal axis, and the needle cavity rear section 25 is positioned in the rear end of the handle 22. At this time, as shown in fig. 1, the

handles

22 and 11 are spliced to form a butterfly-shaped combined handle, so that a user can stably hold the sleeve needle to be punctured into the skin only by holding the

handles

22 and 11 at will, and the operation is convenient. After the subcutaneous injection, a user can pull out the needle core 1, place the wire body into the needle cavity section 24 (see fig. 3) with a circular cross section in the outer needle body 21, and perform subsequent operation, wherein the specific operation process is described below. As shown in fig. 5, the front end of the needle core body 12 is hemispherical, and the resistance can be reduced when the needle core body is penetrated together with the outer needle body 21 under the skin, so that the pain of a patient can be relieved.

As shown in fig. 2, the needle 23 is deviated to the front side (the downward side in the drawing) of the handle 22, the triangular mark 27 is marked on the back side of the

handles

22, 11, after the outer needle body 21 is penetrated into the subcutaneous region, the user can determine which side is the back side of the handle 22 through the triangular mark 27, thereby determining that the other side is the direction of deviation of the needle 23, when there is a blood vessel or nerve under the subcutaneous region, the user can rotate the outer needle 2 to avoid the needle 23, and the danger is reduced. The needle 23 may be biased towards the front of the handle 22, the back of the

handle

22, 11 being marked with triangular indicia 27 instead of the needle 23 being biased towards the back of the handle 22, the front of the

handle

22, 11 being marked with triangular indicia 27. In yet another embodiment, as shown in fig. 6, the needle 23 is biased to the side of the handle 22, and has a right triangle shape in the front and/or rear projection of the handle 22. The right-angled triangle marks 27 are marked on the front and back surfaces of the

handles

22 and 11, the shape of the right-angled triangle marks 27 is consistent with the orthographic projection shape of the needle 23 on the front surface and/or the back surface of the handle 22 so as to mark the deviation direction of the needle 23, and a user can determine the deviation direction of the needle 23 according to the right-angled triangle marks 27.

As shown in fig. 2, the outer needle body 21 is 12cm long, and is marked with scale marks 3 along the length direction; as shown in FIG. 4, the needle core body 12 is slightly longer than the outer needle body 21 by not more than 16cm, and is marked with scale marks 4 along the length direction thereof. The handle 22 of the outer needle 2 is made of transparent material, and after the needle core body 12 is inserted into the needle cavity 5 from the needle core inlet 26, the user can see the scales on the needle core body 12 positioned in the handle 22 from the transparent handle 22. The user can once bury the multi-segment line body with this trocar to distance between the accurate control multi-segment line body, the operation process as follows: a user pierces the needle core 1 and the outer needle 2 into the subcutaneous part together, the depth of the outer needle body 21 penetrating into the subcutaneous part is accurately judged through the scale marks 3 on the outer needle body 21, then the needle core 1 is pulled out, a multi-segment wire is arranged in the outer needle body 21, the needle core 1 is inserted into the needle cavity 5 from the needle core inlet 26 to push the first segment wire to move out from the needle head 23 to enter the subcutaneous part, and at the moment, whether the segment wire is completely pushed out can be accurately judged according to the scale marks 4 on the needle core body 12; after the first section of the wire body is completely pushed out, the scales on the outer needle body 21 are observed, the outer needle 2 is pulled out by the required distance, so that the distance between the needle head 23 and the first section of the wire body is accurately controlled, then the needle core 1 is pushed while observing the scales on the needle core body 12, and the process is continued until the second section of the wire body is completely pushed out until all the multiple sections of the wire body are pushed out.

The outer needle body 21 can be in other lengths, and can meet the requirement of being arranged in a multi-segment line body once only within the range of 10-16 cm.

The handle 22 can be in other lengths, and can be conveniently held within the range of 4.5-6 cm without being overlong. Similarly, the handle 11 may have other lengths, as long as it is within a range of 2 to 3 cm.

The non-circular portion 13 may be modified from a diamond-shaped cross-section to another non-circular cross-section of the non-circular portion 13. accordingly, the rear section 25 of the needle lumen (i.e., the portion of the needle lumen 5 that receives the non-circular portion 13) located in the rear end of the handle 22 is modified from a diamond-shaped cross-section to a cross-section of the rear section 25 of the needle lumen located in the rear end of the handle 22 having another shape and size that will not allow the non-circular portion 13 to rotate on its axis.

The direction of deflection of the needle 23 in the trocar described above can be applied to other types of medical needles having a needle that is deflected to one side.

The above description is only a preferred embodiment of the present invention, the present invention is not limited to the above embodiment, and there may be some slight structural changes in the implementation, and if there are various changes or modifications to the present invention without departing from the spirit and scope of the present invention, and within the claims and equivalent technical scope of the present invention, the present invention is also intended to include those changes and modifications.

Claims

1. The trocar comprises a trocar core and an outer needle, wherein a trocar cavity used for containing a needle body is arranged in the outer needle, after the needle body is arranged in the trocar cavity, the trocar core is inserted into the trocar cavity from the rear end of the trocar cavity to push the needle body to move out from the front end of the trocar cavity, and the trocar core and the outer needle are respectively marked with scales along the length direction.

2. The trocar of claim 1, wherein: the needle core comprises a needle core body and a handle which are connected together, and the scale of the needle core is marked on the needle core body; the outer needle comprises an outer needle body and a handle, the handle is connected with the rear end of the outer needle body, the needle cavity is opened from the front end of the outer needle body to the rear end of the handle, scales on the outer needle are marked on the outer needle body, and the length of the outer needle body is 10-16 cm.

3. The trocar of claim 2, wherein the outer needle body is 12cm long.

4. The trocar of claim 2, wherein the handle of the outer needle is a transparent material such that after the needle core is inserted into the needle cavity from the rear end of the needle cavity, the scale on the needle core located within the handle of the outer needle is visible through the transparent handle.

5. The trocar of claim 2, wherein the handle of the outer needle has double wings.

6. The trocar of claim 5, wherein the handle of the needle core is provided with two wings, and the needle core body is inserted into the needle cavity from the rear end of the needle cavity to the front end of the needle cavity, so that the handle of the needle core is contacted with the handle of the outer needle to be spliced to form a butterfly-shaped combined handle.

7. The trocar according to claim 2 or 6, wherein the handle of the outer needle is 4.5-6 cm long.

8. The trocar of claim 7, wherein the handle of the outer needle is 5cm long.

9. The trocar according to claim 2 or 6, wherein the handle of the trocar core is 2-3 cm long.

10. The trocar of claim 9, wherein the handle of the trocar is 2cm long.

11. The trocar of claim 1, wherein the front end of the trocar is hemispherical.