CN114052801B - Spiral nested puncture needle and puncture device - Google Patents

Abstract

The present application discloses a spiral nested puncture needle and a puncture device, comprising: a puncture needle and a spiral needle tube; wherein, the spiral needle tube has at least one needle tube helical portion, and the spiral needle tube runs in a spiral shape at the needle tube spiral portion; the interior of the spiral needle tube The puncture needle is hollow, and the puncture needle is sleeved in the spiral needle tube; after the puncture needle is sleeved in the spiral needle tube, there is at least one needle body spiral part matched with the needle tube spiral part, and at least one section of the needle head that can extend out of the spiral needle tube; the puncture needle It is slidably connected with the spiral needle tube, so that the needle head of the puncture needle can be retracted or extended out of the spiral needle tube. The present application realizes puncture biopsy or ablation cloth needle treatment across obstacles, and improves the technical effect of the application range of puncture needles, thereby solving the problem that the puncture needles in the related art cannot bypass important organs located in front of the lesions that need to be avoided, resulting in inability to Problems treated with needle biopsy or treatment with an ablation needle.

Description

Spiral Nested Puncture Needle and Puncture Equipment

technical field

The present application relates to the technical field of medical equipment, and in particular, to a spiral nested puncture needle and a puncture device.

Background technique

Biopsy needles or ablation needles (radio frequency needles, microwave needles, steep pulse electroporation needles, etc.) often encounter important blood vessels and organs when puncturing into the human body. These blood vessels or organs cannot be punctured. Puncture of these organs may cause medical accidents such as pneumothorax, rupture of blood vessels, and organ failure. When an important tissue or organ is encountered in the puncture path, the doctor can only find another path. However, in practical applications, there are often no other suitable paths to choose from, which leads to the failure of puncture biopsy or therapeutic ablation needle placement. There is an urgent need for a needle in clinical medicine, which can bypass important organs that need to be avoided, and achieve needle biopsy or ablation needle therapy across obstacles.

SUMMARY OF THE INVENTION

The main purpose of the present application is to provide a spiral nested puncture needle, so as to solve the problem that the puncture needle in the related art cannot bypass the important organs located in front of the lesion that need to be avoided, resulting in the inability to use needle biopsy or therapeutic ablation needle for treatment The problem.

In order to achieve the above object, the present application provides a spiral nested puncture needle, the spiral nested puncture needle includes: a puncture needle and a spiral needle tube; wherein,

The helical needle tube has at least one helical portion of the needle tube, and the direction of the helical needle tube at the helical portion of the needle tube is helical;

The inside of the spiral needle tube is hollow, and the puncture needle is sleeved in the spiral needle tube;

After the puncture needle is sheathed in the helical needle tube, there is at least one helical portion of the needle body matched with the helical portion of the needle tube, and at least one section of the needle head that can extend out of the helical needle tube;

The puncture needle and the helical needle tube are slidably connected, so that the needle head of the puncture needle can be retracted or extended out of the helical needle tube.

Further, the needle head has elasticity, and when the needle head extends out of the spiral needle tube, a straight needle head is formed;

The axis of the straight needle head portion coincides with the axis of the needle tube helical portion, so that the straight needle head portion is located at the center of the needle tube helical portion.

Further, it also includes a needle tube handle and a puncture needle handle, and one end of the puncture needle away from the needle head is fixed on the puncture needle handle;

One end of the spiral needle tube away from the needle head is fixed on the needle tube handle;

The end of the needle tube handle is provided with an operation hole that communicates with the inside of the spiral needle tube, the puncture needle handle is detachably sleeved in the needle tube handle, and the puncture needle is sleeved after passing through the operation hole set in the helical needle tube.

Further, the pitches of each segment of the helical portion of the needle body are equal.

Further, the puncture needle handle and the needle tube handle are nested concentrically.

Further, the spiral needle tube includes an inner spiral needle tube and an outer spiral needle tube, and both the inner spiral needle tube and the outer spiral needle tube have needle tube helical parts with the same direction;

The inner spiral needle tube and the outer spiral needle tube are hollow, and the inner spiral needle tube is sleeved in the outer spiral needle tube, and the puncture needle is sleeved in the inner spiral needle tube;

The needle tube handle is connected with the ends of the inner spiral needle tube and the outer spiral needle tube.

Further, the needle tube handle includes an inner needle tube handle and an outer needle tube handle, the inner needle tube handle is nested in the outer needle tube handle, and the puncture needle handle is nested in the inner needle tube handle;

The end of the inner spiral needle tube is communicated with the inner needle tube handle, and the end of the outer spiral needle tube is communicated with the outer needle tube handle;

Both the inner needle tube handle and the outer needle tube handle are provided with operation holes, and the inner spiral needle tube is sleeved into the outer spiral needle tube after passing through the operation hole on the outer needle tube handle;

The puncture needle is sleeved into the inner spiral needle tube after passing through the operation hole on the inner needle tube handle.

Further, the cross-sections of the puncture needle handle, the inner needle tube handle and the outer needle tube handle are set to be similar polygons.

Further, an annular groove is formed on the outside of the puncture needle handle, the inner needle tube handle and the outer needle tube handle;

The annular grooves are arranged to be evenly distributed along the axial direction, and are used to determine the corresponding advancing distances of the puncture needle, the inner spiral needle tube and the outer spiral needle tube.

Further, the cross-sections of the puncture needle handle, the inner needle tube handle and the outer needle tube handle are set to a similar octagon;

Each surface of the puncture needle handle, the inner needle tube handle and the outer needle tube handle is provided with a scale value for recording the corresponding puncture needle handle, the inner needle tube handle and the outer needle tube handle rotation position.

Further, one end of the puncture needle close to the handle of the puncture needle is set as a straight line segment;

One end of the inner spiral needle tube close to the handle of the inner needle tube and one end of the outer spiral needle tube close to the handle of the outer needle tube are set as straight sections, and the remaining parts form the spiral part of the needle tube;

The straight line segment is coaxial with the straight needle head, so that the straight line segment is located at the center of the needle tube helical portion.

In the embodiment of the present application, a puncture needle and a spiral needle tube are provided; wherein, the spiral needle tube has at least one needle tube helical portion, and the spiral needle tube runs in a spiral shape at the needle tube spiral portion; the interior of the spiral needle tube is hollow, and the puncture needle is sleeved on the inside the spiral needle tube; after the puncture needle is sheathed in the spiral needle tube, there is at least one needle body helical part matching the needle tube spiral part, and at least one section of the needle head that can extend out of the spiral needle tube; the puncture needle and the spiral needle tube are slidably connected to The needle head of the puncture needle can be retracted or extended out of the spiral needle tube, so that the puncture needle can be retracted into the spiral needle tube and the needle is inserted in a spiral direction along with the spiral needle tube, so that the organ to be avoided is located within the inner diameter range of the spiral part of the needle body After bypassing the organ that needs to be avoided, the puncture needle is extended from the spiral needle tube to perform corresponding treatment on the lesion, so that the important organs located in front of the lesion can be bypassed during puncture, and the obstacle is achieved. Puncture biopsy or ablation cloth needle treatment improves the technical effect of the application range of puncture needles, and solves the problem that the puncture needle in related technologies cannot bypass the important organs located in front of the lesion that need to be avoided, resulting in the inability to use puncture biopsy or therapeutic ablation device. Acupuncture for treatment.

Description of drawings

The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the application and make other features, objects and advantages of the application more apparent. The accompanying drawings and descriptions of the exemplary embodiments of the present application are used to explain the present application, and do not constitute an improper limitation of the present application. In the attached image:

Fig. 1 is the structural representation according to the present application;

2 is a schematic side view of the structure according to an embodiment of the present application;

3 is a schematic structural diagram of another side view according to an embodiment of the present application;

4 is a schematic structural diagram of a puncture needle according to an embodiment of the present application;

5 is a schematic structural diagram of an inner helical needle tube according to an embodiment of the present application;

6 is a schematic side view of the structure of the inner needle tube handle according to an embodiment of the present application;

7 is a schematic structural diagram of an external helical needle tube according to an embodiment of the present application;

8 is a schematic side view of the structure of the outer needle handle according to an embodiment of the present application;

9 is a schematic diagram of an overall structure according to an embodiment of the present application;

10 is a schematic structural diagram of bypassing an obstacle according to an embodiment of the present application;

Fig. 11 is the side view structure schematic diagram of Fig. 10;

Among them, 1 puncture needle, 2 inner spiral needle tube, 3 outer spiral needle tube, 4 needle tube spiral section, 5 spiral needle tube, 6 needle head, 7 straight section, 11 puncture needle handle, 12 annular groove, 21 inner needle tube handle, 31 outer Needle handle, 213 operating holes, 8 obstacles.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein.

In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "inside", etc. is based on the orientation or positional relationship shown in the drawings. These terms are primarily used to better describe the present application and its embodiments, and are not intended to limit the fact that the indicated device, element, or component must have a particular orientation, or be constructed and operated in a particular orientation.

In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

Furthermore, the terms "disposed", "provided with", "connected", "fixed" and the like should be construed broadly. For example, "connection" may be a fixed connection, a detachable connection, or a unitary construction; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediary, or two devices, elements or Internal connectivity between components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

Additionally, the term "plurality" shall mean two and more.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Biopsy needles or ablation needles (radio frequency needles, microwave needles, steep pulse electroporation needles, etc.) often encounter important blood vessels and organs when puncturing into the human body. These blood vessels or organs cannot be punctured. Puncture of these organs may cause medical accidents such as pneumothorax, rupture of blood vessels, and organ failure. When an important tissue or organ is encountered in the puncture path, the doctor can only find another path. However, in practical applications, there are often no other suitable paths to choose from, which leads to the failure of puncture biopsy or therapeutic ablation needle placement. There is an urgent need for a needle in clinical medicine, which can bypass important organs that need to be avoided, and achieve needle biopsy or ablation needle therapy across obstacles.

To this end, as shown in FIGS. 1 to 3 , an embodiment of the present application provides a spiral nested puncture needle, the spiral nested puncture needle includes: a puncture needle 1 and a spiral needle tube 5; wherein,

The spiral needle tube 5 has at least one needle tube helical portion 4, and the spiral needle tube 5 has a spiral shape in the direction of the needle tube helical portion 4;

The inside of the spiral needle tube 5 is hollow, and the puncture needle 1 is sleeved in the spiral needle tube 5;

After the puncture needle 1 is sheathed in the helical needle tube 5, it has at least one needle body helical portion matching with the needle tube helical portion 4, and at least one section of the needle head portion 6 that can extend out of the helical needle tube 5;

The puncture needle 1 and the helical needle tube 5 are slidably connected, so that the needle head 6 of the puncture needle 1 can be retracted or extended out of the helical needle tube 5 .

In this embodiment, the spiral nested puncture needle is mainly composed of a puncture needle 1 and a spiral needle tube 5. The spiral needle tube 5 has a needle tube helical portion 4. Bend in the direction. In the present embodiment, the whole spiral needle tube 5 is spiral type or only has a straight section 7 at one end thereof, and the other parts are spiral type. Due to the arrangement of the helical portion 4 of the needle tube on the helical needle tube 5, it is transformed from a straight tube to a spiral tube. Compared with the straight tube, the obstacle 8 cannot be effectively avoided during puncturing, as shown in Fig. 10 and FIG. 11, the helical needle tube 5 is a hollow structure within the inner diameter of the helical part, and the obstacle 8 that needs to be avoided can be located at the hollow structure during puncturing. After passing the obstacle 8, the needle feeding method of the helical needle tube 5 can be rotated around the axis of the helical portion 4 of the needle tube.

The puncture biopsy or ablation by releasing energy is mainly realized by the puncture needle 1 , so in this embodiment, the puncture needle 1 is sheathed in the helical needle tube 5 . The puncture needle 1 is a flexible needle, which has a certain elastic deformation ability, and can be made of a material with good elasticity, such as a nickel-titanium alloy material, or a 65Mn spring steel material, or a 301 spring steel material. The puncture needle 1 is a straight needle before penetrating the helical needle tube 5. After it penetrates into the helical needle tube 5, the puncture needle 1 is deformed to form a needle matching the helical portion 4 of the needle tube due to the restriction of the helical portion 4 of the needle tube on the helical needle tube 5. Body helix.

Due to the sliding connection between the puncture needle 1 and the spiral needle tube 5 , by pulling or pushing the puncture needle 1 , the needle head 6 of the puncture needle 1 can be retracted into the spiral needle tube 5 or extended out of the spiral needle tube 5 . When the helical nested puncture needle in the present application is used, the puncture needle 1 should be first pulled to retract into the helical needle tube 5 , and then the obstacle 8 to be crossed should be set on the helical needle tube 5 within the inner diameter range of the needle tube helical portion 4 within. The position of the obstacle 8 to be crossed can be determined by CT scanning equipment or other scanning equipment. Before puncturing, the projection of the needle cannula helix 4 on the obstacle 8 should completely surround the obstacle 8. At this time, it means that it is important to cross the obstacle. The tissue or organ is located within the inner diameter of the helical portion 4 of the needle cannula. At this time, by pushing or rotating the helical needle tube 5 along the axis of the needle tube helical portion 4, it moves synchronously with the puncture needle 1 and bypasses the important tissues or organs that need to be avoided. When the helical portion 4 of the needle tube has passed over the important tissue or organ that needs to be avoided, the puncture needle 1 can be pushed so that the needle tip extends out of the spiral needle tube 5 to be inserted into the lesion. Afterwards, a puncture biopsy or an energy-releasing ablation operation can be performed through the puncture needle 1 .

When withdrawing the needle, in order to avoid damage caused by the contact of the needle head 6 with the important tissues or organs that were bypassed before, the puncture needle 1 can be pulled first to retract the needle head 6 into the spiral cannula, and then the spiral needle cannula 5 can be retracted. Withdraw from the patient.

In this embodiment, the puncture needle 1 is retracted into the spiral needle tube 5 and the needle is inserted in a spiral direction along with the spiral needle tube 5, so that the organ to be avoided is located within the inner diameter of the helical portion of the needle body, and the organ to be avoided is bypassed Then, the puncture needle 1 is extended from the spiral needle tube 5 for the purpose of corresponding treatment of the lesion, so that the important organs located in front of the lesion can be bypassed during puncture, and the puncture biopsy or ablation cloth needle treatment can be achieved across the obstacle 8. , the technical effect of improving the application range of the puncture needle 1, thereby solving the problem that the puncture needle 1 in the related art cannot bypass the important organs located in front of the lesion that need to be avoided, resulting in the inability to use puncture biopsy or therapeutic ablation needle for treatment. .

Since the puncture needle 1 is implemented after the needle head 6 is in contact with the lesion when performing needle biopsy or ablation, high requirements are required for the position of the needle head 6 . If the needle head 6 of the puncture needle 1 is also spiral-shaped, the orientation of the needle head 6 will not directly face the lesion. More operations are required to make the needle head 6 and the puncture into the lesion, and the location of the puncture Not easy to control.

Therefore, in this embodiment, the needle head 6 is set as a straight needle head 6, that is, when the needle head 6 of the puncture needle 1 extends out of the helical needle tube 5, it can be restored to a straight needle under the action of its elasticity, that is, in this embodiment The puncture needle 1 needs the needle head 6 to have good elasticity. When the needle head 6 extends out of the helical needle tube 5, a straight needle head 6 is formed.

Since the puncture needle 1 is sheathed in the helical needle tube 5, when the puncture needle 1 is inserted into the needle, the needle head 6 of the puncture needle 1 will rotate around the axis of the needle tube helical portion 4 of the helical needle tube 5, so that the needle head 6 of the puncture needle 1 can be accurately The needle head 6 can only rotate around its own axis, but cannot rotate eccentrically. Therefore, in this embodiment, as shown in FIGS. 1 to 3 , the axis of the needle head 6 coincides with the axis of the needle tube helical part 4 , so that the needle head 6 is located at the center of the needle tube helical part 4 . With the arrangement of this structure, the needle head 6 of the puncture needle 1 can accurately puncture the lesion position when the needle is inserted, and will not cause puncturing misalignment due to deflection.

In order to facilitate the respective needle insertion of the spiral needle tube 5 and the puncture needle 1, as shown in Figures 4 to 6, the spiral nested puncture needle in this embodiment also includes a needle tube handle and a puncture needle handle 11, and the puncture needle 1 is far away from the needle head. One end of 6 is fixed on the puncture needle handle 11;

The end of the spiral needle tube 5 away from the needle head 6 is fixed on the needle tube handle;

The end of the needle tube handle is provided with an operation hole 213 that communicates with the inside of the spiral needle tube 5 .

Specifically, it should be noted that the needle tube handle and the puncture needle handle 11 have similar structures, and the entirety thereof may be similar to a cylindrical structure. Both the needle tube handle and the puncture needle handle 11 are provided with grooves along their axial directions, one end of which is a larger opening structure, and the other end is a smaller opening, and the smaller opening forms an operation hole 213 .

Before use, fix the puncture needle 1 on the operation hole 213 at the end of the puncture needle handle 11 to form a whole, and then fix the helical needle tube 5 on the operation hole 213 at the end of the needle tube handle to form the same A whole. Finally, the needle head 6 of the puncture needle 1 is inserted into the needle tube handle and penetrated into the spiral needle tube 5 through the operation hole 213. By pushing the puncture needle 1 or the puncture needle handle 11, the puncture needle handle 11 can be nested into the needle tube handle. At this time, the end of the puncture needle handle 11 and the end of the needle tube handle still have a certain adjustment distance, so that the puncture needle handle 11 can be pushed separately so that the puncture needle 1 extends out of the spiral needle tube 5 .

As shown in FIG. 9, in order to facilitate the needle insertion or withdrawal of the puncture needle 1, the puncture needle handle 11 and the needle tube handle are nested concentrically. During operation, the puncture needle handle 11 and the needle tube handle can be held by hand to realize the needle insertion of the puncture needle 1 and the needle insertion of the spiral needle tube 5 . The structures of the puncture needle handle 11 and the needle tube handle should be designed to be easy to operate.

Since the needle insertion of the helical needle tube 5 or the needle insertion of the puncture needle 1 is in the helical direction, when judging the needle insertion or withdrawal depth, it can be obtained by the number of rotations. Therefore, in order to accurately obtain the depth of needle entry and withdrawal, the pitches of each segment of the helical part of the needle body are equal, which facilitates the calculation of the depth of needle entry and withdrawal.

Since the depth of needle insertion of the puncture needle 1 and the depth of the obstacles 8 that can be avoided are affected by the length of the helical needle tube 5 , in order to increase the depth of needle insertion and the depth of the obstacle 8 that can be avoided without increasing the length of the spiral needle tube 5 itself . As shown in FIGS. 1 and 10 , in this embodiment, there are two spiral needle tubes 5 , that is, the spiral needle tube 5 includes an inner spiral needle tube 2 and an outer spiral needle tube 3 , and both the inner spiral needle tube 2 and the outer spiral needle tube 3 have the same direction. The helical part 4 of the needle tube, the inner spiral needle tube 2 and the outer spiral needle tube 3 are basically the same in structure, the only difference is that the inner diameter of the outer spiral needle tube 3 is larger than the inner diameter of the inner spiral needle tube 2, so that the inner spiral needle tube 2 can be sleeved on the outer spiral needle tube. 3 inside.

That is, the inner helical needle tube 2 and the outer helical needle tube 3 are hollow, and the inner helical needle tube 2 is sheathed in the outer helical needle tube 3, the puncture needle 1 is sheathed in the inner helical needle tube 2, and the needle tube handle is connected with the inner helical needle tube 2 and the outer helical needle tube 2. The end of the needle tube 3 is connected.

In this embodiment, after the helical needle tube 5 is improved into an outer helical needle tube 3 and an inner helical needle tube 2 that are sleeved and relatively movable, the puncture needle 1, the inner helical needle tube 2 and the outer helical needle tube 3 are sequentially sheathed from the inside to the outside. In the connection relationship, before use, the puncture needle 1 is retracted into the inner spiral needle tube 2 , and the inner spiral needle tube 2 is retracted into the outer spiral needle tube 3 .

When puncturing, first puncture the outer helical needle tube 3 into the patient's body. When the length of the outer helical needle tube 3 cannot avoid the obstacle 8 or the puncture needle 1 cannot reach the lesion position, you can continue to push the inner helical needle tube 2 to pass the inner helical needle tube 2. The needle tube 2 is used to avoid obstacles 8 and make the needle head 6 of the puncture needle 1 close to the lesion position, and finally push the puncture needle 1 so that the needle head 6 extends out of the inner spiral needle tube 2 to achieve needle biopsy or ablation operation by releasing energy.

Through the arrangement of the outer helical needle tube 3 and the inner helical needle tube 2, the helical nested puncture needle in this application can effectively improve the scope of action.

Since the spiral needle tube 5 is divided into an inner spiral needle tube 2 and an outer spiral needle tube 3, and the inner spiral needle tube 2 and the outer spiral needle tube 3 need to act independently, as shown in FIG. 5, FIG. 7 and FIG. 9, the needle tube handle in this embodiment is Including an inner needle tube handle 21 and an outer needle tube handle 31, the inner needle tube handle 21 is nested in the outer needle tube handle 31, and the puncture needle handle 11 is nested in the inner needle tube handle 21;

The end of the inner spiral needle tube 2 is communicated with the inner needle tube handle 21, and the end of the outer spiral needle tube 3 is communicated with the outer needle tube handle 31;

Both the inner needle tube handle 21 and the outer needle tube handle 31 are provided with operation holes 213, and the inner spiral needle tube 2 passes through the operation hole 213 on the outer needle tube handle 31 and is then sleeved into the outer spiral needle tube 3;

The puncture needle 1 passes through the operation hole 213 on the handle 21 of the inner needle tube and is then sheathed into the inner spiral needle tube 2 .

Specifically, it should be noted that in this embodiment, the helical nested puncture needle is composed of three components as a whole, one of which is an external component composed of an outer helical needle tube 3 and an outer needle tube handle 31, and the other is an inner helical needle tube. The middle member formed by the needle tube 2 and the inner needle tube handle 21 , and the last one is the inner member formed by the puncture needle 1 and the puncture needle handle 11 . Before the three are installed, they are independent structures, and both the outer spiral needle tube 3 and the inner spiral needle tube 2 have the same direction of the needle tube spiral portion 4 .

During installation, the end of the inner helical needle tube 2 can be passed through the operation hole 213 on the outer needle tube handle 31 and then extended into the outer helical needle tube 3, and the inner needle tube handle 21 can be nested in the outer needle tube handle 31, and the inner needle tube handle There is a certain adjustment distance between 21 and the end of the outer needle tube handle 31 , which is convenient for adjusting the needle insertion depth of the outer spiral needle tube 3 . Then, the needle head 6 of the puncture needle 1 is passed through the operation hole 213 of the inner needle tube handle 21 and then extended into the inner spiral needle tube 2, and the puncture needle handle 11 is nested in the inner needle tube handle 21, and the inner needle tube handle 21 and the puncture needle are inserted into the inner needle tube handle 21. There is also a certain adjustment distance between the ends of the needle handle 11 , which is convenient for the puncture needle 1 to extend out of the inner spiral needle tube 2 .

Since the needle insertion of the puncture needle 1, the inner helical needle tube 2 and the outer helical needle tube 3 all need to rotate the corresponding handle, in order to facilitate the rotation of the corresponding handle, as shown in Fig. 5, Fig. 7 and Fig. 9, the puncture needle in this embodiment The cross-sections of the handle 11 , the inner needle handle 21 and the outer needle handle 31 are set to be similar polygons.

Since the puncture needle 1, the inner spiral needle tube 2 and the outer spiral needle tube 3 also need to apply thrust in some cases, in order to facilitate the application of the thrust force to the puncture needle 1 and the corresponding needle tube, in this embodiment, the puncture needle handle 11, the inner An annular groove 12 is provided on the outside of the needle tube handle 21 and the outer needle tube handle 31;

The annular grooves 12 are arranged to be evenly distributed in the axial direction, and are used to determine the advancing distance of the corresponding puncture needle 1 , the inner spiral needle tube 2 and the outer spiral needle tube 3 .

Specifically, the advancing distance of the puncture needle 1 can be judged by judging the number of grooves in the part where the puncture needle handle 11 extends beyond the inner needle tube handle 21 , and similarly, the groove in the part where the inner needle tube handle 21 extends beyond the outer needle tube handle 31 can be judged. The number of puncture needles can determine the advancing distance of the inner spiral needle tube 2, which is convenient for assisting medical staff to determine the depth of the needle insertion and the distance between the puncture needle 1 and the location of the lesion.

Specifically, it should be noted that since the needle insertion of the puncture needle 1, the inner spiral needle tube 2 and the outer spiral needle tube 3 needs to be realized by rotating the corresponding handle, the rotation position of the handle can still reflect the needle insertion depth to a certain extent, which is It is convenient to accurately obtain the rotation position of the corresponding hand, so as to obtain the depth of needle insertion. The cross-sections of the puncture needle handle 11, the inner needle tube handle 21 and the outer needle tube handle 31 in this embodiment are set to a similar octagon;

Each surface of the puncture needle handle 11 , the inner needle tube handle 21 and the outer needle tube handle 31 is provided with a scale value for recording the corresponding rotational positions of the puncture needle handle 11 , the inner needle tube handle 21 and the outer needle tube handle 31 .

As shown in FIG. 1 to FIG. 11 , one end of the puncture needle 1 close to the puncture needle handle 11 is set as a straight line segment 7 ;

One end of the inner helical needle tube 2 close to the inner needle tube handle 21 and one end of the outer helical needle tube 3 close to the outer needle tube handle 31 are set as a straight section 7, and the rest form the needle tube helix 4;

The straight section 7 is arranged coaxially with the needle head 6 , so that the straight section 7 is located at the center of the needle tube helical section 4 .

In this embodiment, in order to facilitate the needle insertion of the outer helical needle tube 3, the inner helical needle tube 2 and the puncture needle 1 by means of rotation, the parts of the outer helical needle tube 3, the inner helical needle tube 2 and the puncture needle 1 close to the corresponding handle are set as A straight section 7 is formed, and the straight section 7 is coaxial with the needle tube helical portion 4 of the outer helical needle tube 3 and the inner helical needle tube 2 , that is, the straight section 7 is located at the center of the needle tube helical section 4 . And after the needle head 6 extends out of the needle spiral portion 4, the straight line segment 7 is coaxial with the needle head 6, the inner needle handle 21, the outer needle handle 31, and the puncture needle handle 11 of the puncture needle 1, so that the When the handle 11 rotates around its own axis, the needle head 6 of the puncture needle 1 moves in a straight line, so as to accurately reach the lesion position.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Within the spirit and principle of this application, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of this application.

Claims (10)

1. a spiral nested puncture needle, is characterized in that, comprises: puncture needle and spiral needle tube; Wherein, The helical needle tube has at least one helical portion of the needle tube, and the direction of the helical needle tube at the helical portion of the needle tube is helical; The inside of the spiral needle tube is hollow, and the puncture needle is sleeved in the spiral needle tube; After the puncture needle is sheathed in the helical needle tube, there is at least one helical portion of the needle body matched with the helical portion of the needle tube, and at least one section of the needle head that can extend out of the helical needle tube; The puncture needle and the helical needle tube are slidably connected, so that the needle head of the puncture needle can be retracted or extended out of the helical needle tube; The needle head has elasticity, and when the needle head extends out of the spiral needle tube, a straight needle head is formed; The axis of the straight needle head portion coincides with the axis of the needle tube helical portion, so that the straight needle head portion is located at the center of the needle tube helical portion. 2. The spiral nested puncture needle according to claim 1, further comprising a needle tube handle and a puncture needle handle, and one end of the puncture needle away from the needle head is fixed on the puncture needle handle; One end of the spiral needle tube away from the needle head is fixed on the needle tube handle; The end of the needle tube handle is provided with an operation hole that communicates with the inside of the spiral needle tube, the puncture needle handle is detachably sleeved in the needle tube handle, and the puncture needle is sleeved after passing through the operation hole set in the helical needle tube. 3 . The helical nested puncture needle according to claim 2 , wherein the pitches of each segment of the helical portion of the needle body are equal. 4 . 4. The spiral nested puncture needle according to claim 3, wherein the spiral needle tube comprises an inner spiral needle tube and an outer spiral needle tube, and both the inner spiral needle tube and the outer spiral needle tube have the same direction. Needle spiral part; The inner spiral needle tube and the outer spiral needle tube are hollow, and the inner spiral needle tube is sleeved in the outer spiral needle tube, and the puncture needle is sleeved in the inner spiral needle tube; The needle tube handle is connected with the ends of the inner spiral needle tube and the outer spiral needle tube. 5. The spiral nested puncture needle according to claim 4, wherein the needle tube handle comprises an inner needle tube handle and an outer needle tube handle, the inner needle tube handle is nested in the outer needle tube handle, and the The puncture needle handle is nested in the inner needle tube handle; The end of the inner spiral needle tube is communicated with the inner needle tube handle, and the end of the outer spiral needle tube is communicated with the outer needle tube handle; Both the inner needle tube handle and the outer needle tube handle are provided with operation holes, and the inner spiral needle tube is sleeved into the outer spiral needle tube after passing through the operation hole on the outer needle tube handle; The puncture needle is sleeved into the inner spiral needle tube after passing through the operation hole on the inner needle tube handle. 6 . The helical nested puncture needle according to claim 5 , wherein the cross-sections of the puncture needle handle, the inner needle tube handle and the outer needle tube handle are set to be similar polygons. 7 . 7. The spiral nested puncture needle according to claim 5 or 6, wherein an annular groove is provided on the outside of the puncture needle handle, the inner needle tube handle and the outer needle tube handle; The annular grooves are arranged to be evenly distributed along the axial direction, and are used to determine the corresponding advancing distances of the puncture needle, the inner spiral needle tube and the outer spiral needle tube. 8. The helical nested puncture needle according to claim 6, wherein the cross-sections of the puncture needle handle, the inner needle tube handle and the outer needle tube handle are set to a similar octagon; Each surface of the puncture needle handle, the inner needle tube handle and the outer needle tube handle is provided with a scale value for recording the corresponding puncture needle handle, the inner needle tube handle and the outer needle tube handle rotation position. 9. The spiral nested puncture needle according to claim 8, wherein one end of the puncture needle close to the puncture needle handle is set as a straight line segment; One end of the inner spiral needle tube close to the handle of the inner needle tube and one end of the outer spiral needle tube close to the handle of the outer needle tube are set as straight sections, and the remaining parts form the spiral part of the needle tube; The straight line segment is coaxial with the straight needle head, so that the straight line segment is located at the center of the needle tube helical portion. 10. A puncture device, characterized by comprising a puncture needle fixing device and the spiral nested puncture needle according to any one of claims 1 to 9.

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