CN219397371U - Clinical piercing depth of oncology - Google Patents

Abstract

The utility model relates to the technical field of tumor biopsy sampling, and particularly discloses a clinical puncture device for oncology, which comprises a shell, a biopsy needle and an adjusting mechanism, wherein the shell is sleeved outside the biopsy needle, and the biopsy needle is connected with the biopsy needle through the adjusting mechanism; the adjusting mechanism comprises a sleeve, a toothed plate, a gear, a rotating shaft and a knob, wherein the sleeve is fixedly sleeved outside the biopsy needle, the sleeve is slidably arranged in the shell, the toothed plate is axially and fixedly arranged on the sleeve, the gear is meshed with the toothed plate, one end of the gear is fixedly provided with the rotating shaft, and one end of the rotating shaft penetrates through the shell to extend out of the shell and is connected with the knob; the device also comprises a reciprocating mechanism, wherein the reciprocating mechanism comprises a sliding block, a spring and a poking piece. The utility model can adjust the length of the biopsy needle in advance according to the image adjustment of the biopsy part of the patient, and accurately extend the biopsy needle into the tumor for sampling; by the reciprocating mechanism, the tumor part is sampled for a plurality of times without withdrawing the shell.

Description

Clinical piercing depth of oncology

Technical Field

The utility model relates to the technical field of tumor biopsy sampling, in particular to a clinical puncturing device for oncology.

Background

Clinically, conventional examination is carried out, for example, abnormal shadow is found in the chest when lung CT examination is carried out, or abnormal echo is found in the liver when abdomen ultrasound is carried out, the cause of abnormal pathology cannot be clarified, benign and malignant tumors cannot be judged, and puncture examination is needed, namely, a point of tissue is taken for pathological examination, so that the judgment of benign and malignant tumors is facilitated. The tumor puncture is performed under the guidance of B-ultrasound or CT by using a thick needle or a thin needle to puncture the corresponding position of the tumor, taking out a part of tissue, fixing the tissue with formalin, and then sending the fixed tissue to a pathology department for microscopic examination. Tumor pathology examination is a gold standard for tumor diagnosis, and at present, tumor puncture is safer and widely applied to clinic.

In the prior art, the clinical puncturing device for oncology cannot control the length of the biopsy needle, but a doctor can only control the puncturing depth of the biopsy needle through medical images, so that when a small tumor is punctured, the condition that the biopsy needle does not puncture the tumor position or is penetrated easily occurs, and the puncturing operation is failed; in order to ensure the accuracy of tumor pathology examination, a sufficient tumor sample needs to be acquired in the process of tumor puncture, and the conventional clinical puncture device for oncology has no function of controlling the reciprocating puncture of the biopsy needle, so that the biopsy needle can be inserted and pulled out only by a doctor to realize multiple sampling, and the stroke of the insertion and the pulling out is difficult to control by hands, if the operation is improper, the tumor-free part of a patient can be punctured, the pain is caused to the patient, and the accuracy of pathological detection can be reduced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a clinical puncturing device for oncology.

The aim of the utility model is achieved by the following technical scheme: the clinical puncturing device for the oncology comprises a shell, a biopsy needle and an adjusting mechanism, wherein one end of the biopsy needle is arranged in the shell in a sliding manner, and the adjusting mechanism is arranged on the shell;

the adjusting mechanism comprises a sleeve, a toothed plate, a gear, a rotating shaft and a knob, wherein the sleeve is fixedly sleeved outside the biopsy needle, the sleeve is slidably arranged in the shell, the toothed plate is axially fixedly arranged on the sleeve, the gear is meshed with the toothed plate, the rotating shaft is coaxially and fixedly arranged on the gear, and one end of the rotating shaft penetrates through the shell to extend out of the shell and be connected with the knob.

By rotating the knob, the knob drives the gear to synchronously rotate through the rotating shaft, the gear is meshed with the toothed plate, so that the sleeve fixedly connected with the toothed plate axially slides along the shell under the rotation of the gear, and the biopsy needle is fixed in the sleeve, so that the biopsy needle synchronously moves along with the sleeve, the biopsy needle can reversely move by reversing the knob, and the length of the biopsy needle extending out of the shell is adjusted; after the length of the biopsy needle is adjusted, a doctor holds the shell to puncture the needle head of the biopsy needle aiming at the tumor position, when one end of the shell is propped against the skin of a patient, the needle head of the biopsy needle is positioned in a tumor, and tumor tissues are cut off sharply by the sharp head of the biopsy needle and enter the biopsy needle tube, so that puncture sampling of the tumor is realized; reduces the influence of human factors on the puncture operation result and improves the success rate of the puncture operation.

Specifically, the reciprocating mechanism comprises a sliding block, a spring and a poking plate, wherein a sliding groove penetrating through the shell is formed in one side of the shell along the axial direction, the sliding block is arranged in the sliding groove in a sliding mode, the spring is arranged along the sliding groove, one end of the spring is connected with the sliding groove, the other end of the spring is connected with the sliding block, the rotating shaft is rotationally connected with the sliding block, and the poking plate is fixedly arranged on the sliding block. After the biopsy puncture needle punctures in place, a doctor stirs the plectrum through the finger, so that the slider moves to the other end of the chute, the spring contracts, a rotating shaft hole is formed in the slider, the rotating shaft is rotationally connected with the slider through the rotating shaft hole, the rotating shaft moves along with the slider when the slider moves, the gear pushes the toothed plate and the sleeve to move along with the rotating shaft to the tail end side of the biopsy needle, the biopsy needle retreats a distance to the shell direction, the plectrum is loosened, the slider is pushed back to the original position under the action of the spring, the biopsy needle is inserted back to the original position, the tumor is cut and sampled, the repeated stirring of the plectrum is realized along with the repeated stirring of the plectrum, the doctor can control the cutting stroke of the biopsy needle through the distance of the sliding block, and the biopsy needle can not exceed the original depth all the time due to the limitation of the chute, and the phenomenon that the biopsy needle passes through the tumor due to human error in the process of repeated puncture and sampling is avoided.

Specifically, the knob has offered the through-hole in axle center department, the pivot with through-hole sliding connection, follow the axial fixity in the through-hole and be provided with the boss, set up in the pivot and correspond the recess of boss, the boss slides and sets up in the recess, the radial side circumference array of knob is provided with a plurality of perpendicular teeth, set up on the slider and correspond knob and a plurality of perpendicular tooth's ring gear. When the extension length of the biopsy needle is adjusted, the knob is positioned outside the annular gear, and the knob can rotate freely; after the position of the biopsy needle is adjusted, the knob is slid into the annular gear along the rotating shaft, and the annular gear is matched with the vertical teeth, so that the knob cannot rotate, and the biopsy needle is fixed.

Specifically, the one end of pivot in the shell outside is connected with the baffle. The baffle is connected to one end of the outer side of the shell through the rotating shaft, and the outer diameter of the baffle is larger than the through hole of the knob so as to prevent the knob from sliding out of the rotating shaft.

Specifically, the both ends threaded connection of sleeve has the guide ring, the sleeve passes through the guide ring with shell sliding connection. Through at telescopic both ends threaded connection guide ring, the guide ring is laminated with the inner wall of shell, makes sleeve and shell coaxial throughout in-process that slides in the shell, rotates the knob and makes the guide ring of sleeve one end slide outside the shell, unscrews the guide ring from the sleeve, and reverse rotation knob makes the cardboard roll-off gear again, can take out the shell with the sleeve, realizes the separation of sleeve and shell, makes things convenient for cleaning and disinfecting and biopsy needle's change.

Specifically, the guide rings are fixedly provided with guide blocks, guide grooves corresponding to the guide blocks are formed in the inner side of the shell along the axial direction, and the guide blocks are slidably arranged in the guide grooves. Through seting up the guide way in the inboard of shell, the guide way is spacing to the guide block, has avoided the guide ring to take place to rotate when sliding in the shell to avoided the guide ring to become flexible with telescopic connection.

Specifically, the outside of shell is fixed to be provided with the ring platform. The ring table is pressed by the finger part, so that the shell and the hand can be prevented from sliding without pinching the shell, the physical strength of a doctor is saved, and the doctor has more physical strength to ensure the accuracy of the action.

Specifically, the tail end of the biopsy needle is sleeved with a fixed cover, and the end part of the fixed cover is in threaded connection with the guide ring. The tail end of the biopsy needle is propped against the fixed cover through the thread connection of the fixed cover on the guide ring, so that the biopsy needle is prevented from sliding between the biopsy needle and the sleeve in the process of being inserted into a body, and the accuracy of a puncture operation is ensured; the fixed cover is in threaded connection with the guide ring, and can be detached from the guide ring, so that the fixed cover is convenient to clean and sterilize.

Specifically, the biopsy needle is provided with scales. The doctor is through observing the scale that the biopsy needle is located outside the shell to audio-visual length that stretches out the shell outside the biopsy needle is obtained, convenient adjustment.

Specifically, the top of fixed cover has seted up the gas pocket, gas pocket threaded connection has the shutoff pole. In the process of puncturing the tumor, the air blocking rod is screwed on the air hole to seal the air hole, and other tissues of the patient body are prevented from entering the biopsy needle through the air pressure in the biopsy needle tube; after the needle head of the biopsy needle reaches the tumor position, the air blocking rod is taken down to communicate the inside of the biopsy needle tube with the atmosphere, and in the process of inserting the biopsy needle, the body tissue discharges the air in the biopsy needle from the air hole, so that the air enters the biopsy needle tube.

The utility model has the following advantages:

according to the utility model, the knob is rotated, the gear is driven by the rotary shaft to synchronously rotate, the gear is meshed with the toothed plate, so that the sleeve fixedly connected with the toothed plate axially slides along the shell under the rotation of the gear, and the biopsy needle is fixed in the sleeve, so that the biopsy needle synchronously moves along with the sleeve, and the biopsy needle can be reversely moved by reversing the knob, so that the length of the biopsy needle extending out of the shell is adjusted; after the length of the biopsy needle is adjusted, a doctor holds the shell to puncture the needle head of the biopsy needle aiming at the tumor position, when one end of the shell is propped against the skin of a patient, the needle head of the biopsy needle is positioned in a tumor, and tumor tissues are cut off sharply by the sharp head of the biopsy needle and enter the biopsy needle tube, so that puncture sampling of the tumor is realized; the influence of human factors on the puncture operation result is reduced, and the success rate of the puncture operation is improved;

the shifting piece is shifted by fingers, so that the sliding block moves to the other end of the sliding groove, the spring contracts, the sliding block is provided with a rotating shaft hole, the rotating shaft is rotationally connected with the sliding block through the rotating shaft hole, the rotating shaft moves together with the sliding block when the sliding block moves, the gear pushes the toothed plate and the sleeve to move together to one side of the tail end of the biopsy needle along with the rotating shaft, the biopsy needle retreats for a certain distance towards the direction of the outer shell, the shifting piece is loosened, the sliding block is pushed back to the original position under the action of the spring, the biopsy needle is inserted back to the original position, the tumor is cut and sampled, the repeated sampling of the tumor is realized along with the repeated shifting of the shifting piece by a doctor, the cutting stroke of the biopsy needle is controlled by the distance of shifting the sliding block, and the biopsy needle can not exceed the original depth all the time due to the limitation of the sliding groove, so that the biopsy needle passes through the tumor due to human error in the process of repeated puncture and sampling is avoided.

Drawings

FIG. 1 is a schematic diagram of a clinical puncturing device for oncology in accordance with the present utility model;

FIG. 2 is a cross-sectional view of a clinical oncology puncture device according to the present utility model;

FIG. 3 is a front view of a clinical oncology puncture device according to the present utility model;

FIG. 4 is a schematic view of the reciprocating mechanism of the present utility model;

FIG. 5 is an axial view of the spindle and knob of the present utility model;

in the figure: 1-shell, 2-biopsy needle, 3-adjustment mechanism, 4-sleeve, 5-toothed plate, 6-gear, 7-spindle, 8-knob, 9-plectrum, 10-chute, 11-through hole, 12-boss, 13-groove, 14-vertical tooth, 15-annular gear, 16-baffle, 17-guide ring, 18-guide block, 19-guide groove, 20-annular table, 21-fixed cover, 22-scale, 23-air hole, 24-air shutoff rod, 25-reciprocating mechanism, 26-slider, 27-spring.

Detailed Description

For the purpose of making the technical solution and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

As shown in fig. 1 to 5, the biopsy needle comprises a shell 1, a biopsy needle 2 and an adjusting mechanism 3, wherein one end of the biopsy needle 2 is arranged in the shell 1 in a sliding manner, and the adjusting mechanism 3 is arranged on the shell 1;

the adjusting mechanism 3 comprises a sleeve 4, a toothed plate 5, a gear 6, a rotating shaft 7 and a knob 8, wherein the sleeve 4 is fixedly sleeved outside the biopsy needle 2, the sleeve 4 is arranged in the housing 1 in a sliding manner, the toothed plate 5 is fixedly arranged on the sleeve 4 along the axial direction, the gear 6 is meshed with the toothed plate 5, the gear 6 is coaxially and fixedly provided with the rotating shaft 7, and one end of the rotating shaft 7 penetrates through the housing 1 to extend outside the housing 1 and is connected with the knob 8.

In the scheme, the length of the biopsy needle 2 cannot be controlled by the existing clinical puncture device for oncology, the puncture depth of the biopsy needle 2 can only be controlled by doctors through medical images, particularly, the CT images cannot reflect the relative positions of the biopsy needle 2 and tumors in real time, so that the puncture level of the doctors is a huge test, when the smaller tumors are punctured, the condition that the heads of the biopsy needle 2 do not puncture to the tumor positions or penetrate easily can cause puncture operation failure, and the puncture is performed again, so that the damage to the body of a patient is aggravated, and pain is caused to the patient, so that the shell 1 and the biopsy needle 2 are connected through the setting of the adjusting mechanism 3, so that the length of the biopsy needle 2 is adjusted; the shell 1 and the sleeve 4 are of cylindrical structures, the outer diameter of the shell 1 is larger, and a doctor holds the biopsy needle 2 by grasping the shell 1, so that compared with grasping the slim biopsy needle 2, the biopsy needle is more handy and stable; the sleeve 4 and the biopsy needle 2 are detachable, so that the biopsy needle 2 is convenient to clean and can be replaced, the service life of the biopsy needle is prolonged, the inner wall of the sleeve 4 is provided with a rubber anti-slip surface, the outer wall of the biopsy needle 2 is tightly attached to the inner wall of the sleeve 4, and the biopsy needle 2 cannot slide with the sleeve 4 in the process of puncturing; before puncture operation, according to the tumor position displayed by medical images, the knob 8 is rotated, the knob 8 drives the gear 6 to synchronously rotate through the rotating shaft 7, and as the gear 6 is meshed with the toothed plate 5, the sleeve 4 fixedly connected with the toothed plate 5 axially slides along the shell 1 under the rotation of the gear 6, and as the biopsy needle 2 is fixed in the sleeve 4, the biopsy needle 2 synchronously moves along with the sleeve 4, the biopsy needle 2 can reversely move by reversing the knob 8, and the length of the biopsy needle 2 extending out of the shell 1 is adjusted; after the length of the biopsy needle 2 is adjusted, the knob 8 is fixed, so that the knob 8 cannot rotate, a doctor holds the shell 1 to align the needle head of the biopsy needle 2 with the tumor position for puncturing, when one end of the shell 1 abuts against the skin of a patient, the needle head of the biopsy needle 2 is positioned in the tumor, and tumor tissues are cut off by the sharp head of the biopsy needle 2 and enter a tube of the biopsy needle 2, so that puncturing and sampling of the tumor are realized; reduces the influence of human factors on the puncture operation result and improves the success rate of the puncture operation.

Further, the reciprocating mechanism 25 comprises a sliding block 26, a spring 27 and a poking piece 9, wherein a sliding groove 10 penetrating through the casing 1 is formed in one side of the casing 1 along the axial direction, the sliding block 26 is arranged in the sliding groove 10 in a sliding manner, the spring 27 is arranged along the sliding groove 10, one end of the spring 27 is connected with the sliding groove 10, the other end of the spring 27 is connected with the sliding block 26, the rotating shaft 7 is rotationally connected with the sliding block 26, and the poking piece 9 is fixedly arranged on the sliding block 26. In the scheme, in order to ensure the accuracy of tumor pathology examination, enough tumor samples are required to be acquired in the process of tumor puncture, a doctor holds the biopsy needle 2 to insert and withdraw to realize multiple sampling, and the stroke of the insertion and the withdrawal is difficult to control through a human hand, if the operation is incorrect, the patient is punctured at a part without tumor, pain is caused to the patient, the accuracy of pathological detection is reduced, and the problem is realized by arranging the reciprocating mechanism 25; the two sides of the rotating shaft 7, which are positioned on the sliding block 26, are respectively provided with a clamping ring, so that the rotating shaft 7 and the sliding block 26 are prevented from axially sliding; after the biopsy puncture needle is punctured in place, a doctor stirs the plectrum 9 through fingers, so that the slide block 26 moves towards the other end of the sliding groove 10, the spring 27 contracts, the slide block 26 is provided with a rotating shaft 7 hole, the rotating shaft 7 is rotationally connected with the slide block 26 through the rotating shaft 7 hole, the rotating shaft 7 moves along with the slide block 26 when the slide block 26 moves, after the overhanging length of the biopsy needle 2 is adjusted, the knob 8 is fixed on the slide block 26, so that the gear 6 cannot rotate, the gear 6 pushes the toothed plate 5 and the sleeve to move towards the tail end side of the biopsy needle 2 together, the biopsy needle 2 retreats a distance towards the shell 1, the plectrum 9 is loosened, the slide block 26 is pushed back to the original position under the action of the spring 27, the biopsy needle 2 is inserted back to the original position, the tumor is cut and sampled, repeated sampling of the tumor is realized along with repeated stirring of the plectrum 9 by the doctor, the doctor can control the cutting stroke of the biopsy needle 2 through the distance of stirring the slide block 26, and the original depth of the biopsy needle 2 can not be always passed due to the limitation of the sliding groove 10, and the biopsy needle 2 can not pass in the process of repeated puncture and sampling.

Further, the knob 8 is provided with a through hole 11 at the axis, the rotating shaft 7 is slidably connected with the through hole 11, a boss 12 is fixedly arranged in the through hole 11 along the axial direction, a groove 13 corresponding to the boss 12 is formed in the rotating shaft 7, the boss 12 is slidably arranged in the groove 13, a plurality of vertical teeth 14 are arranged on the circumferential array on the radial side of the knob 8, and an inner gear ring 15 corresponding to the knob 8 and a plurality of vertical teeth 14 is formed on the sliding block 26. In the above scheme, after the length of the biopsy needle 2 extending out of the housing 1 is adjusted, the knob 8 is fixed to fix the biopsy needle 2; in the scheme, the boss 12 of the knob 8 is matched with the groove 13 on the rotating shaft 7, so that the knob 8 can rotate to drive the rotating shaft 7 to rotate, and when the overhanging length of the biopsy needle 2 is adjusted, the knob 8 is positioned outside the annular gear 15, and the knob 8 can rotate freely; after the position of the biopsy needle 2 is adjusted, the knob 8 slides into the annular gear 15 along the rotating shaft 7, and the annular gear 15 is matched with the vertical teeth 14, so that the knob 8 cannot rotate, and the fixation of the biopsy needle 2 is realized; since the inner gear ring 15 is tightly attached to the vertical teeth 14, a certain damping exists between the inner gear ring 15 and the vertical teeth 14, so that the knob 8 cannot slide out of the inner gear ring 15 under the action of gravity.

Further, a baffle 16 is connected to one end of the rotating shaft 7 outside the casing 1. In the scheme, when the extension length of the biopsy needle 2 is adjusted, the knob 8 is required to be pulled out from the annular gear 15, so one end of the rotary shaft 7 outside the shell 1 is connected with the baffle 16, and the outer diameter of the baffle 16 is larger than the through hole 11 of the knob 8 so as to prevent the knob 8 from sliding out of the rotary shaft 7; wherein baffle 16 and pivot 7 threaded connection, select back with baffle 16 from pivot 7, can install knob 8 on pivot 7, make things convenient for the assembly of knob 8.

Further, two ends of the sleeve 4 are connected with guide rings 17 in a threaded manner, and the sleeve 4 is connected with the shell 1 in a sliding manner through the guide rings 17. In this scheme, owing to be provided with pinion rack 5 on sleeve 4, still have gear 6 between pinion rack 5 and the shell 1, so there is the clearance between sleeve 4 and the shell 1, in order to guarantee that biopsy needle 2 is coaxial with shell 1 all the time, so at the smooth inner wall laminating of sleeve 4 both ends threaded connection guide ring 17, make sleeve 4 and shell 1 all the time in the gliding in-process of shell 1, rotate knob 8 and make sleeve 4 one end guide ring 17 slide outside shell 1, unscrew guide ring 17 from sleeve 4, then reverse rotation knob 8, make cardboard roll-off gear 6, can take sleeve 4 out of shell 1, realize sleeve 4 and shell 1's separation, the convenient cleaning and disinfecting and the change of biopsy needle 2.

Further, guide blocks 18 are fixedly arranged on the guide rings 17, guide grooves 19 corresponding to the guide blocks 18 are formed in the inner side of the shell 1 along the axial direction, and the guide blocks 18 are slidably arranged in the guide grooves 19. In this scheme, guide ring 17 and shell 1 have the friction at the slip process, and the friction probably can lead to sleeve 4 and guide ring 17's threaded connection not hard up, through offer guide slot 19 in shell 1's inboard, guide slot 19 is spacing to guide block 18, has avoided guide ring 17 to take place to rotate when sliding in shell 1 to the connection of guide ring 17 and sleeve 4 has been avoided not hard up.

Further, a ring 20 is fixedly disposed on the outer side of the housing 1. In the scheme, in the process of puncturing, reverse force exists between the hands of a doctor and the shell 1, and the hands exert larger force on the shell 1, so that enough static friction force between the hands and the shell 1 can be ensured, and sliding does not occur; by pressing the ring table 20 with the finger part, the sliding of the shell 1 and the hand can be avoided without pinching the shell 1, the physical strength of a doctor is saved, and the doctor has more physical strength to ensure the accuracy of the action.

Further, a fixed cover 21 is sleeved at the tail end of the biopsy needle 2, and the end part of the fixed cover 21 is in threaded connection with the guide ring 17. In the scheme, as the body tissue can generate certain resistance to the biopsy needle 2 in the puncturing process; the tail end of the biopsy needle 2 is propped against the fixed cover 21 through the thread connection of the fixed cover 21 on the guide ring 17, so that the biopsy needle 2 is prevented from sliding with the sleeve 4 in the process of being inserted into a body, and the accuracy of a puncture operation is ensured; the fixed cover 21 is in threaded connection with the guide ring 17, so that the fixed cover 21 can be detached from the guide ring 17, and cleaning and disinfection are facilitated.

Further, the biopsy needle 2 is provided with a scale 22. In this scheme, length dimension is carved with along the axial in the outside of biopsy needle 2, and doctor can observe that biopsy needle 2 is located the scale 22 outside shell 1 to audio-visual length that stretches out shell 1 outside biopsy needle 2 is conveniently adjusted.

Further, an air hole 23 is formed in the top of the fixed cover 21, and the air hole 23 is connected with an air blocking rod 24 in a threaded manner. In the scheme, in the process of puncturing the tumor, the air blocking rod 24 is screwed on the air hole 23 to seal the air hole 23, and other tissues of the body of a patient are prevented from entering the biopsy needle 2 through the air pressure in the tube of the biopsy needle 2; after the needle head of the biopsy needle 2 reaches the tumor position, the air blocking rod 24 is removed, so that the inside of the tube of the biopsy needle 2 is communicated with the atmosphere through the air hole 23, and in the process of inserting the biopsy needle 2, body tissues discharge air in the biopsy needle 2 from the air hole 23, so that the air is cut off by the head of the biopsy needle 2 and enters the tube of the biopsy needle 2, and the sampling of tumor tissues is realized.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the disclosed technology. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technology of the present utility model fall within the protection scope of the present utility model.

Claims (10)

1. Clinical piercing depth of oncology, its characterized in that: the biopsy needle comprises a shell (1), a biopsy needle (2) and an adjusting mechanism (3), wherein one end of the biopsy needle (2) is arranged in the shell (1) in a sliding manner, and the adjusting mechanism (3) is arranged on the shell (1);

adjustment mechanism (3) are including sleeve (4), pinion rack (5), gear (6), pivot (7) and knob (8), sleeve (4) fixed cover is established outside biopsy needle (2), sleeve (4) slip sets up in shell (1), pinion rack (5) are followed axial fixity and are set up on sleeve (4), gear (6) and pinion rack (5) mesh mutually, gear (6) coaxial fixity is provided with pivot (7), the one end of pivot (7) is passed shell (1) and is stretched outside shell (1) and connect knob (8).

2. The oncology clinical puncturing device of claim 1, wherein: still include reciprocating mechanism (25), reciprocating mechanism (25) include slider (26), spring (27) and plectrum (9), spout (10) that run through shell (1) have been seted up along the axial to one side of shell (1), slider (26) slip sets up in spout (10), spring (27) set up along spout (10), spout (10) are connected to one end of spring (27), slider (26) are connected to the other end of spring (27), pivot (7) are connected with slider (26) rotation, plectrum (9) are fixed to be set up on slider (26).

3. The oncology clinical puncturing device as set forth in claim 2, wherein: the rotary knob (8) is provided with a through hole (11) at the axis, the rotary shaft (7) is in sliding connection with the through hole (11), a boss (12) is fixedly arranged in the through hole (11) along the axial direction, a groove (13) corresponding to the boss (12) is formed in the rotary shaft (7), the boss (12) is slidably arranged in the groove (13), a plurality of vertical teeth (14) are arranged on a circumferential array on the radial side of the rotary knob (8), and a plurality of inner gear rings (15) corresponding to the rotary knob (8) and the vertical teeth (14) are formed in the sliding block (26).

4. The oncology clinical puncturing device of claim 1, wherein: one end of the rotating shaft (7) at the outer side of the shell (1) is connected with a baffle plate (16).

5. The oncology clinical puncturing device of claim 1, wherein: guide rings (17) are connected to the two ends of the sleeve (4) in a threaded mode, and the sleeve (4) is connected with the shell (1) in a sliding mode through the guide rings (17).

6. The oncology clinical puncturing device of claim 5, wherein: guide blocks (18) are fixedly arranged on the guide rings (17), guide grooves (19) corresponding to the guide blocks (18) are formed in the inner side of the shell (1) along the axial direction, and the guide blocks (18) are slidably arranged in the guide grooves (19).

7. The oncology clinical puncturing device of claim 1, wherein: the outside of the shell (1) is fixedly provided with a ring table (20).

8. The oncology clinical puncturing device of claim 5, wherein: the tail end of the biopsy needle (2) is sleeved with a fixed cover (21), and the end part of the fixed cover (21) is in threaded connection with the guide ring (17).

9. The oncology clinical puncturing device of claim 1, wherein: the biopsy needle (2) is provided with a scale (22).

10. The oncology clinical puncturing device of claim 8, wherein: an air hole (23) is formed in the top of the fixed cover (21), and the air hole (23) is connected with an air blocking rod (24) in a threaded mode.