CN220089522U - Biopsy needle with fixed-distance guiding and limiting structure - Google Patents

Abstract

The utility model discloses a biopsy needle with a distance guide limiting structure, which comprises a main body, wherein a cavity is formed in the main body, distance grooves are formed in the inner walls of the upper side and the lower side of the cavity respectively, push plates are connected in a sliding mode in the distance grooves, connecting springs fixedly connected with the push plates are fixedly connected in the distance grooves, pressing rods which are fixedly connected with the push plates and extend out of the main body are arranged between the connecting springs, pressing plates are fixedly connected to the outer sides of the pressing rods, needle tubes are fixedly connected to the left sides of the main body, needle cores penetrating through the main body are arranged in the needle tubes, and connecting handles are fixedly connected to the right sides of the needle cores. This possess biopsy needle of distance direction limit structure uses through the cooperation with direction distance mechanism, can be according to the nimble puncture degree of depth of adjusting the biopsy needle of focus size to realize the direction spacing to the needle core in the puncture process, with this needle core of avoiding taking place the skew, and then guarantee biopsy needle puncture accuracy of taking a sample.

Description

Biopsy needle with fixed-distance guiding and limiting structure

Technical Field

The utility model relates to the technical field of biopsy needles, in particular to a biopsy needle with a fixed-distance guide limiting structure.

Background

The biopsy needle is a medical instrument for biopsy of soft tissue parts such as liver, kidney, prostate, breast, lung, thyroid and the like, is an important tool for diagnosing pathology, and plays a decision-making role in clinically determining the type of diseases and diagnosis and treatment methods.

At present, when the biopsy needle is used for puncture sampling, the biopsy needle is punctured under the action of the elasticity of the spring, so that the puncture depth cannot be controlled, the puncture depth of the biopsy needle is difficult to adjust according to the size of a focus, and in the puncture process, the needle core cannot be guided and limited, so that the needle core is deviated in the puncture process, and the puncture sampling accuracy of the biopsy needle is affected.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the biopsy needle with the fixed-distance guide limiting structure, and the biopsy needle with the fixed-distance guide limiting structure can flexibly adjust the puncture depth of the biopsy needle according to the focus size through the matched use of the fixed-distance guide mechanism, and realize the guide limiting of the needle core in the puncture process, thereby avoiding the deviation of the needle core and further ensuring the puncture sampling accuracy of the biopsy needle.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the biopsy needle with the distance guide limiting structure comprises a main body, a cavity is formed in the main body, distance grooves are formed in the inner walls of the upper side and the lower side of the cavity respectively, pushing plates are connected to the inner sides of the distance grooves in a sliding mode, connecting springs fixedly connected with the pushing plates are fixedly connected to the inner sides of the distance grooves, pressing rods fixedly connected with the pushing plates and extending out of the main body are arranged between the connecting springs, pressing plates are fixedly connected to the outer sides of the pressing rods, needle tubes are fixedly connected to the left sides of the main body, needle cores penetrating through the main body are arranged in the needle tubes, connecting handles are fixedly connected to the right sides of the needle cores, notch openings are formed in the side walls of the needle cores, and guide distance mechanisms are arranged in the inner sides of the cavities.

Preferably, grooves matched with the pressing plates are respectively formed in the outer sides of the main bodies.

Preferably, the guiding distance mechanism comprises guide rods which are respectively and fixedly connected in the cavity, guide blocks which are fixedly connected to the outer sides of the needle cores are slidably connected to the outer sides of the guide rods, firing springs which are fixedly connected with the guide blocks are arranged on the outer sides of the guide rods, mounting grooves are respectively formed in the guide blocks, distance springs are fixedly connected to the inner parts of the mounting grooves, and distance blocks which are fixedly connected with the mounting grooves in a sliding mode are fixedly connected to the outer sides of the distance springs.

Preferably, the guide block is slidably connected with the inner wall of the cavity.

Preferably, one side of the distance block is obliquely arranged.

The beneficial effects of the utility model are as follows:

1. when the biopsy needle is used, the needle core is driven to move right through the connecting handle, the guide block is driven to move right, the guide block compresses the firing spring, the distance block which is in sliding connection with the inside of the guide block can stretch into the inside of the distance groove under the elastic action of the distance spring in a compressed state, the needle core can be in a state to be fired under the matching action of the distance block and the distance groove, the distance block can be inserted into the inside of different distance grooves by adjusting the right moving distance of the needle core driven by the connecting handle, so that the control of the penetration depth of the needle core is realized, the biopsy needle can flexibly adjust the penetration depth according to the size of a focus, after adjustment, the two side pressing plates can be pressed, the two side pressing plates can drive the two side pushing plates to move in opposite directions through the two side pressing rods, the distance block in the distance groove is pushed out, the needle core can be pierced to perform penetration sampling under the elastic action of the firing spring, the needle core can be guided and limited through the matching action of the guide rod and the guide block in the process, and the needle core can be prevented from deviating in the penetration process, so that the accuracy of the biopsy needle can be ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the internal structural components of the body of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present utility model;

FIG. 4 is a schematic view of the internal structural components of the mounting slot of the present utility model.

Reference numerals in the drawings: 1. a main body; 2. a cavity; 3. a distance groove; 4. a push plate; 5. a connecting spring; 6. pressing a pressing rod; 7. pressing the plate; 8. a needle tube; 9. a needle core; 10. a connecting handle; 11. a guide rod; 12. a guide block; 13. a firing spring; 14. a mounting groove; 15. a distance spring; 16. distance blocks; 17. a groove; 18. notch.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

Example 1

The biopsy needle with a distance guiding and limiting structure shown in figures 1-4 comprises a main body 1, wherein a cavity 2 is formed in the main body 1, distance grooves 3 are respectively formed in the inner walls of the upper side and the lower side of the cavity 2, a push plate 4 is slidably connected in the inner parts of the distance grooves 3, a connecting spring 5 fixedly connected with the push plate 4 is fixedly connected in the inner parts of the distance grooves 3, a pressing rod 6 fixedly connected with the push plate 4 and extending out of the main body 1 is arranged between the connecting springs 5, a pressing plate 7 is fixedly connected to the outer side of the pressing rod 6, a needle tube 8 is fixedly connected to the left side of the main body 1, a needle core 9 penetrating through the main body 1 is arranged in the needle tube 8, a connecting handle 10 is fixedly connected to the right side of the needle core 9, a notch 18 is formed in the side wall of the needle core 9, a guiding and distance mechanism is arranged in the cavity 2, the guide distance mechanism comprises guide rods 11 fixedly connected inside a cavity 2 respectively, guide blocks 12 fixedly connected to the outer sides of the needle cores 9 are connected to the outer sides of the guide rods 11 in a sliding mode, the guide blocks 12 are connected with the inner walls of the cavity 2 in a sliding mode, firing springs 13 fixedly connected with the guide blocks 12 are arranged on the outer sides of the guide rods 11, mounting grooves 14 are respectively formed in the guide blocks 12, distance springs 15 are fixedly connected to the inner sides of the mounting grooves 14, distance blocks 16 are fixedly connected to the outer sides of the distance springs 15 and are connected with the mounting grooves 14 in a sliding mode, one sides of the distance blocks 16 are obliquely arranged, when the distance blocks 16 move to the right, the inclined faces of the distance blocks can be extruded with the side walls of the distance grooves 3, the inside of the mounting grooves 14 can be retracted again, and therefore the positions of the distance blocks 16 can be conveniently adjusted, and the distance blocks 16 can be inserted into the inside of different distance grooves 3.

When in use, the needle core 9 can be driven to move right through the connecting handle 10, the needle core 9 drives the guide block 12 to move right, the guide block 12 compresses the firing spring 13, along with the continuous right movement of the guide block 12, the distance block 16 which is in sliding connection with the inside of the guide block 12 can extend into the inside of the distance groove 3 under the elastic force of the distance spring 15 in a compressed state, at the moment, the needle core 9 can be in a state to be fired under the cooperation of the distance block 16 and the distance groove 3, the right movement distance of the needle core 9 is driven by adjusting the connecting handle 10, the distance block 16 can be inserted into the inside of different distance grooves 3, so as to realize the control of the penetration depth of the needle core 9, the biopsy needle can flexibly adjust the puncture depth according to the size of a focus, the two side pressing plates 7 can be pressed after the adjustment is finished, the two side pressing plates 7 drive the two side pushing plates 4 to move in opposite directions through the two side pressing rods 6, the distance blocks 16 inside the distance grooves 3 are pushed out, the needle core 9 can be pierced to perform puncture sampling under the elastic force of the firing spring 13, in the puncture process, the needle core 9 is guided and limited through the cooperation of the guide rod 11 and the guide block 12, and the needle core 9 is prevented from shifting in the puncture process, so that the accuracy of puncture sampling of the biopsy needle is ensured.

Example two

Referring to fig. 2, as another preferred embodiment, there is a difference from the first embodiment in that the outer sides of the main body 1 are respectively provided with grooves 17 adapted to the pressing plates 7, and by providing the grooves 17, the pressing plates 7 are easily placed therein so that the pressing plates 7 are provided inside the main body 1.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a biopsy needle that possesses distance direction limit structure, includes main part (1), its characterized in that: the utility model discloses a novel needle tube structure, including main part (1), cavity (2) have been seted up to the inside of main part (1), distance groove (3) have been seted up respectively to the upper and lower both sides inner wall of cavity (2), the equal sliding connection in inside in distance groove (3) has push pedal (4), the inside fixedly connected with in distance groove (3) has connecting spring (5) with push pedal (4) fixed connection, be provided with between connecting spring (5) with push pedal (4) fixed connection and extend push rod (6) of main part (1), the outside fixedly connected with push rod (6) of push rod (7), the left side fixedly connected with needle tubing (8) of main part (1), the inside of needle tubing (8) is provided with noose (9) that pass main part (1), notch (18) have been seted up to the right side wall of noose (9), the inside of cavity (2) is provided with guide mechanism.

2. Biopsy needle with distance guiding limit structure according to claim 1, characterized in that: grooves (17) matched with the pressing plates (7) are respectively formed in the outer side of the main body (1).

3. Biopsy needle with distance guiding limit structure according to claim 1, characterized in that: the guide distance mechanism comprises guide rods (11) which are fixedly connected to the inside of the cavity (2), guide blocks (12) which are fixedly connected to the outer sides of the needle cores (9) are fixedly connected to the outer sides of the guide rods (11) in a sliding mode, firing springs (13) which are fixedly connected with the guide blocks (12) are arranged on the outer sides of the guide rods (11), mounting grooves (14) are formed in the guide blocks (12) respectively, distance springs (15) are fixedly connected to the inner portions of the mounting grooves (14), and distance blocks (16) which are fixedly connected to the outer sides of the distance springs (15) are slidably connected with the mounting grooves (14).

4. A biopsy needle with a distance guiding limit structure according to claim 3, wherein: the guide block (12) is in sliding connection with the inner wall of the cavity (2).

5. A biopsy needle with a distance guiding limit structure according to claim 3, wherein: one side of the distance block (16) is obliquely arranged.