CN115137403B - But secondary anesthesia puncture biopsy rifle in art - Google Patents

Abstract

The invention discloses a secondary anesthesia puncture biopsy gun in an operation, which comprises a sampling needle, a cutting sleeve, a transmitting device, a vibration generating device and a shell, wherein the sampling needle is arranged on the outer side of the cutting sleeve; the sampling needle is in an elongated cylindrical shape and comprises a puncture tool bit, a connecting rod and a needle body, wherein the puncture tool bit and the needle body are coaxially arranged in a cylinder with the same diameter, one end of the connecting rod is connected with the puncture tool bit, and the other end of the connecting rod is connected with the needle body; cutting the sleeve, taking the shape of an elongated tube, the left end part is an oblique incision edge; the cutting sleeve is sleeved at the outer side of the sampling needle, the left ends of the cutting sleeve and the sampling needle extend out of the shell, and the right ends of the cutting sleeve and the sampling needle are positioned in the shell; the right end of the sampling needle and the right end of the cutting sleeve are arranged in the shell and are connected with the transmitting mechanism, and the beneficial effects of the invention are that: can carry out secondary anesthesia in the primary puncture, and the accurate injection anesthetic of deep target area need not many times to inject anesthesia, will effectively alleviate women patient's puncture misery and intraoperative cell propagation harm.

Description

A puncture biopsy gun capable of secondary anesthesia during surgery

Technical Field

The invention belongs to the technical field of medical equipment, and in particular relates to a puncture biopsy gun capable of secondary anesthesia during surgery.

Background Art

Breast cancer is a disease that currently threatens women's life and health, and its mortality rate ranks first among female malignant tumors. The incidence of breast cancer is increasing year by year, and it is reported that there are about 210,000 new cases each year. The 5-year survival rate of breast cancer patients who receive correct treatment in the early stage is as high as 90%. Therefore, finding a sensitive and effective detection method for early diagnosis of breast cancer is of great significance to reducing the mortality rate of breast cancer and improving the quality of life of patients.

With the progress of standardized treatment of breast cancer, neoadjuvant chemotherapy, breast-conserving surgery, sentinel lymph node biopsy and other diagnostic and treatment methods have received increasing attention and have become the mainstream of breast cancer diagnosis and treatment. The results of pathological histology are the gold standard for the diagnosis of breast cancer, and accurate pathological histology results are the prerequisite for comprehensive treatment of breast cancer. Pathological histology examination includes open surgical biopsy and puncture lesion biopsy. With the maturity and advancement of imaging-guided puncture biopsy technology, the proportion of open surgical breast lesion biopsy has gradually decreased. At present, under the guidance of X-ray, ultrasound and MRI, it is widely used in clinical practice to obtain lesion tissue for histopathological diagnosis through hollow needle puncture.

The commonly used puncture biopsy guns now mainly include puncture cannula, biopsy needle core in cannula, needle core and cannula firing handle. Among them, the biopsy needle core in cannula is a smooth stainless steel needle with a bevel tip and a sampling groove, and the cannula is a stainless steel tube with a bevel tip and scale. Before puncture, the surgeon must anesthetize the skin at the puncture point, the needle tract and the tissue around the lesion. In the process from the skin at the puncture point to the sampling trigger point, the biopsy needle core is retracted in the cannula, and the two enter the breast tissue together. After reaching the trigger point, the surgeon presses the firing button, and the biopsy needle core and cannula are quickly extended outward in turn, and the lesion specimen entering the sampling groove is cut off by the cannula and sealed in the groove. After the puncture biopsy gun is removed from the body, the lesion specimen is fixed in 10% neutral formaldehyde solution and sent for inspection.

According to drug regulations, the upper limit of a single use of lidocaine, a conventional anesthetic drug, is no more than 400 mg. However, during the anesthesia process, patients often have larger breasts or deeper lesions, and the anesthesia puncture path is longer, and the anesthesia effect of deep tissues is poor, which can easily cause obvious pain.

In addition, when anesthetizing a tumor located near the base of the breast, long paths and multiple injections of anesthesia can easily cause residual tumor cells in the needle tract and the possibility of spread.

Summary of the invention

Aiming at the problems in the prior art of long puncture path, poor anesthetic effect of deep resistance during biopsy sampling, and multiple injections easily causing residual and spread of tumor cells, a puncture biopsy gun that can perform secondary anesthesia during surgery is provided.

A puncture biopsy gun capable of secondary anesthesia during surgery, comprising an injection needle shaft, a sampling needle, a cutting sleeve, a launching device and a shell;

The injection needle shaft has a rotating disk at the rear end and a detachable connection with the piston at the front end;

The sampling needle is in the shape of an elongated cylinder, and includes a puncture blade head, a connecting rod, and a needle body. The puncture blade head and the needle body are coaxially arranged as cylinders with equal diameters. One end of the connecting rod is connected to the puncture blade head, and the other end is connected to the needle body.

The cutting sleeve is in the shape of an elongated tube, and the left end thereof is a bevel cutting edge;

The cutting sleeve is sleeved on the outer side of the sampling needle, the left ends of the cutting sleeve and the sampling needle extend out of the housing, and the right ends of the cutting sleeve and the sampling needle are located inside the housing;

The launching device comprises a shell and a launching mechanism, wherein the shell is slidably arranged in the outer shell, the right ends of the sampling needle and the cutting sleeve are arranged in the shell and connected to the launching mechanism, and the launching mechanism is arranged in the shell and is used to launch the sampling needle and the cutting sleeve one after another for a distance;

An injection hole is provided at the end of the puncture blade head, a through hole is provided between the puncture blade head and the needle body, the injection needle shaft is connected to a piston and inserted into the through hole of the sampling needle, the piston is located in the through hole of the puncture blade head, and the right end of the injection needle shaft is outside the right end of the shell.

The intraoperative secondary anesthesia puncture biopsy gun described in the claim has a front end of the injection needle shaft connected to the piston by a thread, a notch is provided at the front end of the piston, an anti-rotation block is arranged at the end of the inner hole of the puncture blade head, and the notch of the piston is fitted with the anti-rotation block.

Among them, the intraoperative secondary anesthesia puncture biopsy gun has an axial linear groove micro-texture on the outer cylindrical surface of the puncture blade head. The linear groove micro-texture is a linear groove with a depth and width of 20 μm. The length of the linear groove is 10 mm per segment and is distributed in a circular array along the cylindrical surface. There are several segments of linear grooves along the axial direction, and there are gaps between the segments in the axial direction.

Among them, the intraoperative secondary anesthesia puncture biopsy gun is provided with an axial linear groove micro-texture on the outer cylindrical surface of the cutting sleeve. The linear groove micro-texture is a linear groove with a depth and width of 20μm. The length of the linear groove is 10mm per segment, distributed in a circular array along the cylindrical surface. There are several segments of linear grooves along the axial direction, and there are gaps between the segments in the axial direction.

The intraoperative secondary anesthesia puncture biopsy gun described in the claim also includes a vibration generating device, which includes an acoustic wave motor, a lead screw and a battery. The acoustic wave motor is arranged inside the shell, the output shaft of the acoustic wave motor is connected to the lead screw, the lead screw is threadedly connected to the nut, the nut is arranged on the shell, and the battery is arranged in the shell to power the acoustic wave motor.

The intraoperative secondary anesthesia puncture biopsy gun described in the claim, the firing mechanism includes a baffle, a first spring, a second spring, a first connecting rod, a second connecting rod, a first cylindrical guide rod and a second cylindrical guide rod,

The baffle is arranged in the shell, one end of the first cylindrical guide rod is arranged in the shell and can slide left and right in the shell, one end of the second cylindrical guide rod is arranged in the shell and can slide left and right in the shell, the first connecting rod is in a corner shape, one end of which is connected to the first cylindrical guide rod, and the other end is connected to the sampling needle, the second connecting rod is in a corner shape, one end of which is connected to the second cylindrical guide rod, and the other end is connected to the cutting sleeve, one end of the first spring is fixed on the baffle, and the other end is connected to the first cylindrical guide rod, and one end of the second spring is fixed on the baffle, and the other end is connected to the second cylindrical guide rod;

A first stopper is arranged at the end of the first cylindrical guide rod, a second stopper is arranged at the end of the second cylindrical guide rod, and a button which can block and release the first stopper and the second stopper from moving up and down is arranged on the shell.

Beneficial effects of the present invention:

Secondary anesthesia can be performed during one puncture, and anesthetics can be accurately injected into deep target areas without the need for multiple injections of anesthesia. This will effectively reduce the puncture pain and intraoperative cell transmission hazards of female patients.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a cross-sectional view of the present invention;

FIG3 is a schematic diagram of the internal structure of the present invention;

FIG4 is a schematic diagram of the installation of the sampling needle of the present invention;

FIG5 is a schematic diagram of the injection needle shaft of the present invention;

FIG6 is a schematic diagram of a piston of the present invention;

FIG7 is a schematic diagram of a sampling needle of the present invention;

FIG8 is an enlarged schematic diagram of the sampling needle head of the present invention;

FIG9 is an enlarged schematic diagram of the sampling needle head of the present invention;

FIG10 is a schematic diagram of an anti-rotation block of the present invention;

FIG11 is a schematic diagram of a cutting sleeve according to the present invention;

FIG. 12 is an enlarged schematic diagram of the cutting sleeve head of the present invention.

DETAILED DESCRIPTION

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

1 to 12 , this embodiment provides a puncture biopsy gun capable of secondary anesthesia during surgery, the structure of which includes an injection needle shaft 1 , a sampling needle 2 , a cutting sleeve 3 , a launching device, and a vibration generating device.

As shown in Fig. 5, the injection needle shaft 1 has a rotating disk 11 at the rear end and a detachable connection between the front end and the piston 12. As shown in Fig. 6, the front end of the injection needle shaft 1 is connected to the piston 12 through a thread.

As shown in FIG. 7 , the sampling needle 2 is in the shape of an elongated cylinder, including a puncture blade head 21, a connecting rod 23, and a needle body 24. The puncture blade head 21 and the needle body 24 are coaxially arranged as cylinders of equal diameter. One end of the connecting rod 23 is connected to the puncture blade head 21, and the other end is connected to the needle body 24. The puncture blade head 21 and the needle body 24 are provided with through holes. An axial linear groove micro-texture is arranged on the outer cylindrical surface of the puncture blade head 21. The depth and width of the linear groove micro-texture are both about 20 μm, which is equivalent to the cell scale. The length of the linear groove is 10 mm per segment, and it is distributed in a circular array along the cylindrical surface. In the axial direction, there are several segments of linear grooves, with intervals between the segments, and each segment is arranged in a circular array. The diameter of the connecting rod 23 is significantly smaller than the diameter of the puncture blade head 21, so as to form a storage groove for the sample.

As shown in FIG8 , the left end of the puncture blade 21 is a beveled needle tip. As shown in FIG9 , the left end of the puncture blade 21 is a triangular blade needle tip, and the cutting edge has a serrated micro-texture. The serrated micro-texture has a morphology that cuts off part of the material on the straight edge of the blade and turns it into a serrated curve. The length of each sawtooth is about 20 to 50 μm. The serrated structure can form multiple puncture needle tips, making it easier to puncture human soft tissue. With the help of vibration, the traditional soft tissue puncture effect can be changed to a sawing soft tissue effect, making it easier to insert the needle and requiring less force.

As shown in Figures 11 and 12, the cutting sleeve 3 is in the shape of a slender tube, with a bevel cutting edge 31 at the left end, and an axial linear groove micro-texture is provided on the outer cylindrical surface. The depth and width of the linear groove micro-texture are both about 20 μm, which is equivalent to the cell scale. The length of the linear groove is 10 mm, and it is distributed in a circular array along the cylindrical surface. There are several segments of linear grooves in the axial direction, with intervals between the segments, and each segment is arranged along the circumference.

As shown in FIG. 4 , it is a schematic diagram of the injection needle shaft 1 , the sampling needle 2 and the cutting sleeve 3 assembled together, wherein the injection needle shaft 1 is inserted into the through hole of the sampling needle 2 , and the cutting sleeve 3 is sleeved on the outer side of the sampling needle 2 .

The combination of the three, in addition to puncturing soft tissue, can achieve two functions: one is the secondary injection of anesthetics, and the other is sampling.

Secondary injection anesthesia process. An injection hole 22 is provided at the end of the puncture head 21, and the injection hole 22 is connected to the through hole of the puncture head 21. The injection needle shaft 1 is connected to the piston 12 and inserted into the through hole of the sampling needle 2. The piston 12 is located in the through hole of the puncture head 21. The injection needle shaft 1 is pulled backward so that the piston 12 is located in the right end of the puncture head 21 (but does not reach the material storage groove), and the anesthetic is sucked into the through hole cavity of the puncture head 21 through the injection hole 22. After the sampling needle 2 is inserted and fired, the injection needle shaft 1 is pushed forward so that the anesthetic is injected from the injection hole 22 into the target area deep in the soft tissue to perform secondary anesthesia on the part to be cut.

As shown in FIG6 , there is a notch at the front end of the piston 12. As shown in FIG10 , an anti-rotation block 28 is provided at the end of the inner hole of the puncture blade head 21. When or after the piston 12 injects the anesthetic, the injection needle shaft 1 is properly rotated so that the piston 12 is just engaged with the anti-rotation block 28, and then the piston 12 cannot rotate. Other structures can also be provided so that the piston cannot rotate at the front end of the inner hole of the puncture blade head 21 after the anesthetic is injected.

After the injection is completed, the piston 12 can only slide forward and backward in the through hole of the puncture blade head 21, but cannot rotate. Thus, the injection needle shaft 2 and the piston 12 are threadedly disassembled by rotating the turntable 11, and the piston 12 is left inside the puncture blade head 21 to prevent the sample from contaminating the needle tract tissue through the injection port during the sampling process. Then the injection shaft 2 can be pulled out.

Sampling process. As shown in Figure 8, the diameter of the connecting rod 23 is significantly smaller than the diameter of the puncture head 21. When the cutting sleeve 3 slides on the sampling needle 2, the gap between the two at other positions is very small, but there is a larger gap at the position of the connecting rod 23. After the sampling needle 2 is inserted into the soft tissue, at this time, the cutting sleeve 3 quickly slides from the rear end position of the sampling needle 2 to the position of the puncture head 21, and when passing the position of the connecting rod 23, the soft tissue located here is cut off and sealed in the position between the two. Then, the two are pulled out from the soft tissue to complete the sampling of the soft tissue.

Linear groove microtexture, during the puncture process, tissue fluid can be stored in the linear groove, which plays a role of lubrication and can reduce the puncture friction of the cutting sleeve and the sampling needle. The linear groove microtexture is distributed in a circular array on the cylindrical surface of the sleeve, and the number of arrays can be flexibly set according to the puncture needs; the depth and width of the linear groove are ~20 μm, which is the same as the cell scale level; the length of the linear groove is 10 mm, and the axial number of the area between the two scales can be flexibly set according to the puncture needs.

The presence of microtexture allows a certain amount of tissue fluid to be stored in the microtexture during the puncture process. The tissue fluid has a good lubricating effect, reduces friction, reduces puncture resistance, and reduces pain.

At the same time, the microtexture can store a small amount of anesthetic to anesthetize the puncture channel and reduce pain.

As shown in FIGS. 1 , 2 and 3 , the launching device includes a housing 51 , a baffle 52 , a first spring 53 , a second spring 56 , a first connecting rod 54 , a second connecting rod 57 , a first cylindrical guide rod 55 and a second cylindrical guide rod 58 .

As shown in the figure, the shell 51 is arranged in the outer shell 6; the baffle 52 is arranged in the shell 51; the first cylindrical guide rod 55 is arranged in the shell 51 and can slide left and right in the shell 51; the second cylindrical guide rod 58 is arranged in the shell 51 and can slide left and right in the shell 51, and the right ends of the sampling needle 2 and the cutting sleeve 3 can be slid left and right in the shell 51, and the first connecting rod 54 is in a corner shape, one end of which is connected to the first cylindrical guide rod 55, and the other end is connected to the sampling needle 2; the second connecting rod 57 is in a corner shape, one end of which is connected to the second cylindrical guide rod 58, and the other end is connected to the cutting sleeve 3; one end of the first spring 53 is fixed on the baffle 52, and the other end is connected to the first cylindrical guide rod 55; one end of the second spring 56 is fixed on the baffle 52, and the other end is connected to the second cylindrical guide rod 58.

As shown in FIG3 , a first stopper 59 is disposed at the end of the first cylindrical guide rod 55 , a second stopper 60 is disposed at the end of the second cylindrical guide rod 58 , and a button 62 is disposed on the housing 6 for blocking and releasing the first stopper 59 and the second stopper 69 from moving up and down.

As shown in FIG1 , the second cylindrical guide rod 58 is pressed into the housing 6 to overcome the spring force, driving the sampling needle 2 to slide to the right, and after reaching the second stopper 60 action position, it is blocked by the button 62. Similarly, the first cylindrical guide rod 55. When it is necessary to release, the button 62 in the upper middle part of the housing 6 is pressed, and the second stopper 60 is released. Under the action of the spring, the second cylindrical guide rod 58 and the sampling needle 2 are pushed outward and inserted into the soft tissue. Almost at the same time (slightly later), the first stopper 59 is released, and under the action of the spring, the first cylindrical guide rod 55 and the cutting sleeve 3 are pushed outward to complete the tissue cutting sampling.

The outer shell 6 is threadedly connected with a locking screw 61 , and the lower end of the locking screw 61 penetrates into the inner part of the outer shell 6 , so as to press against the housing 51 and restrict the housing 51 from sliding left and right. Loosening the locking screw 61 releases the restriction on the housing 51 .

As shown in FIG2 , the vibration generating device is composed of an acoustic wave motor 41, a lead screw 43, and a battery 42. The acoustic wave motor 41 is arranged inside the housing, and can realize the forward and reverse rotation of the required angular velocity and angular displacement. The output shaft of the acoustic wave motor 41 is connected to the lead screw 43, and the lead screw 43 is threadedly connected to the nut 44. The nut 44 is arranged on the housing 51, and the housing 51 can be slid left and right in the housing 6. The housing 51 cannot rotate in the housing 6 to prevent it from turning around during the puncture process. The locking screw 61 is loosened when vibration puncture is required, and the axial vibration restriction of the housing 6 on the transmitting device is released. The operation button can use the circuit board to control the start and stop and rotation parameters of the acoustic wave motor, which can be converted into reciprocating linear vibration of different frequencies and amplitudes of the nut 44. Reciprocating linear vibration of different frequencies and amplitudes of the sampling needle and the cutting sleeve during the puncture process can be realized, thereby reducing the puncture force.

Directions:

After the puncture biopsy gun is installed according to the structure and principle of the invention, pain-reducing and resistance-reducing puncture of soft tissues and secondary anesthesia and specimen extraction of the target area during the operation can be achieved under the guidance of ultrasound.

The specific steps are:

Step 1, tighten the locking screw 61 on the housing 6, the lower end of the screw 61 presses against the housing 51, and the housing 51 cannot slide in the housing 1;

Step 2, connecting the injection needle shaft 1 and the piston 12 through threads;

Step 3, insert the injection needle shaft 1 and the piston 12 into the through hole of the sampling needle and push them to the front end;

Step 4: retract the sampling needle and the cutting sleeve into the launch device through the cylindrical guide rod, leaving only the puncture tip of the sampling needle exposed outside the cutting sleeve;

Step 5, immerse the puncture blade head and the cutting sleeve into the anesthetic, so that the micro-textured grooves contain a small amount of anesthetic, and at the same time, draw the injection needle shaft 1, and draw a proper amount of anesthetic into the hole cavity at the front end of the puncture blade head 21 through the piston 12 and the injection hole 22;

Step 6: Under ultrasound guidance, hold the housing 6, align the needle tip with the puncture starting point, and determine the puncture direction;

Step 7, loosen the locking screw 61 on the housing 6, so that the launching device can move axially in the housing 6;

Step 8, turn on the motor of the vibration generating device, select a gear, and perform skin and soft tissue puncture with the assistance of the vibration of the sampling needle and the cutting cannula;

Step 9: Determine the launch position under ultrasound guidance;

Step 10, turning off the motor of the vibration generating device to stop the vibration;

Step 11, push the injection needle shaft 1 to inject an appropriate amount of anesthetic into the target area deep in the soft tissue during the operation to perform secondary anesthesia on the part to be cut;

Step 12, the injection needle shaft 1 is rotated counter-spirally by the turntable 11 at the rear end of the injection needle shaft 1, and the injection needle shaft 1 is disconnected from the piston 12 by the action of the anti-rotation block;

Step 13, extract the hollow micro-textured needle core from the injection needle shaft 1, leaving the piston 12 to seal the front end of the sampling needle 2;

Step 14, tighten the locking screw 61 on the housing 6, and tighten the lower end of the screw 61 against the housing 51, so that the launch device and the housing 6 are relatively fixed;

Step 15, triggering the launch buttons of the sampling needle and cutting sleeve launcher respectively, so that the sampling needle and the cutting sleeve are ejected in sequence, and the target area is cut and sampled;

Step 16: Remove the puncture biopsy gun from the soft tissue and skin.

At this point, the biopsy sampling is completed.

A large number of experiments have shown that: (1) non-smooth biological surfaces with certain morphologies have significant friction-reducing effects, such as the bristly blood-sucking nasal organ of mosquitoes and the rough ovipositor of parasites, which can significantly reduce puncture resistance; (2) vibration-assisted needle insertion with appropriate frequency can significantly reduce puncture force.

The present invention proposes a biopsy gun that can be anesthetized twice during surgery. The biopsy gun can reduce the puncture force and cutting force, reduce pain, and can perform secondary anesthesia in the deep target area during surgery. The secondary anesthesia injection is performed through the injection needle shaft, which will effectively reduce the puncture pain of female patients and the harm of cell transmission during surgery.

In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "clockwise" and "counterclockwise" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (3)

1. A puncture biopsy gun capable of secondary anesthesia during surgery, characterized in that it comprises an injection needle shaft (1), a sampling needle (2), a cutting sleeve (3), a launching device and a housing (6); An injection needle shaft (1), the rear end of which is provided with a rotating disk (11), and the front end of which is detachably connected to a piston (12); The sampling needle (2) is in the shape of an elongated cylinder and comprises a puncture blade head (21), a connecting rod (23) and a needle body (24). The puncture blade head (21) and the needle body (24) are coaxially arranged as cylinders with equal diameters. One end of the connecting rod (23) is connected to the puncture blade head (21) and the other end is connected to the needle body (24). The cutting sleeve (3) is in the shape of an elongated tube, and the left end thereof is a bevel cutting edge (31); The cutting sleeve (3) is sleeved on the outer side of the sampling needle (2), the left ends of the cutting sleeve (3) and the sampling needle (2) extend out of the housing (6), and the right ends of the cutting sleeve (3) and the sampling needle (2) are located inside the housing (6); The launching device comprises a shell (51) and a launching mechanism. The shell (51) is slidably arranged in the outer shell (6). The right ends of the sampling needle (2) and the cutting sleeve (3) are arranged in the shell (51) and connected to the launching mechanism. The launching mechanism is arranged in the shell (51) and is used to launch the sampling needle (2) and the cutting sleeve (3) one after another over a certain distance. An injection hole (22) is formed at the end of the puncture blade head (21), a through hole is formed between the puncture blade head (21) and the needle body (24), the injection needle shaft (1) is connected to the piston (12) and inserted into the through hole of the sampling needle (2), the piston (12) is located in the through hole of the puncture blade head (21), and the right end of the injection needle shaft (1) is outside the right end of the housing (6); The injection needle shaft (1) is pulled backwards so that the piston (12) is located inside the right end of the puncture blade head (21), and the anesthetic is sucked into the through hole cavity of the puncture blade head (21) through the injection hole (22). After the sampling needle (2) is inserted into the soft tissue, the injection needle shaft (1) is pushed forwards so that the anesthetic is injected from the injection hole (22) into the target area deep in the soft tissue, thereby performing secondary anesthesia on the part to be cut; The front end of the injection needle shaft (1) is connected to the piston (12) through a thread, the front end of the piston (12) has a notch, an anti-rotation block (28) is arranged at the end of the inner hole of the puncture blade head (21), and the notch of the piston (12) is snap-fitted with the anti-rotation block (28); After the injection is completed, the piston (12) can only slide forward and backward in the through hole of the puncture blade head (21) but cannot rotate. By rotating the turntable (11), the injection needle shaft (1) and the piston (12) are threadedly disassembled, and the piston (12) is left inside the puncture blade head (21) to prevent the sample from contaminating the needle tract tissue through the injection port during the sampling process. 2. The intraoperative secondary anesthesia puncture biopsy gun as described in claim 1 is characterized in that an axial linear groove micro-texture is provided on the outer cylindrical surface of the puncture blade head (21), and the linear groove micro-texture is a linear groove with a depth and width of 20 μm, and the length of the linear groove is 10 mm, distributed in a circular array along the cylindrical surface, and there are several segments of linear grooves along the axial direction, and there are gaps between the segments in the axial direction. 3. The intraoperative secondary anesthesia puncture biopsy gun as described in claim 1 is characterized in that an axial linear groove micro-texture is provided on the outer cylindrical surface of the cutting sleeve (3), the linear groove micro-texture is a linear groove with a depth and width of 20 μm, the length of the linear groove is 10 mm, and it is distributed in a circular array along the cylindrical surface, and there are several segments of linear grooves along the axial direction, and there are gaps between the segments in the axial direction.