CN219699985U - Biopsy needle structure - Google Patents

Abstract

The utility model belongs to the technical field of medical instruments, in particular to a biopsy needle structure, which comprises an outer needle, a needle core body and a groove, wherein the needle core body is connected inside the outer needle in a sliding way, the groove is formed in one end of the needle core body, an extraction assembly is arranged on the outer needle and the needle core body, the extraction assembly comprises a shell, a frame and a sliding block, the shell is arranged outside the needle core body and is in an open structure, the frame is sleeved on the surface of the needle core body, the sliding block is fixed on the upper surface of the frame, a spring is fixed between the sliding block and the shell, a pressing plate is fixed on the upper surface of the sliding block, a moving groove is formed in one side of the surface of the shell, which is close to the sliding block, the needle core body automatically retracts and resets, tissues are cut off through the matching of the groove and the outer needle, assistance by external personnel is not needed, the operation is simple and convenient, the biopsy needle is not easy to shake when the needle core body is taken out, the sampling accuracy is improved, and the pain of a patient is reduced.

Description

Biopsy needle structure

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a biopsy needle structure.

Background

Lung tumors include primary and metastatic tumors, most of the primary lung tumors are malignant tumors, most common lung cancers are less common sarcomas, benign tumors are less common, and most of the primary lung tumors are malignant tumors of other organ tissues and are transmitted to the lung through menstrual blood, so that when the type of the lung tumor is confirmed, the lung tumors need to be checked and tested after sampling by using a biopsy needle;

through checking the public (bulletin) number; CN204562317U discloses a novel biopsy needle, which discloses in the technology that the novel biopsy needle comprises a needle seat, a biopsy needle and a needle core body, one end of the needle seat is fixedly connected with the tail part of the biopsy needle, an inner hole is arranged in the needle seat and the biopsy needle, the needle core body penetrates into the inner hole, and the needle core body is provided with a notch and other technical schemes, so that the novel biopsy needle has the technical effects of rapidly cutting off tissues through the cooperation of the notch and the biopsy needle head, cutting off the tissues very naturally, conveniently and rapidly, reducing pains of patients and the like;

when the needle core biopsy device is used, although the tissue cutting process is quite natural, convenient and quick, the pain of a patient is reduced, in the current needle core biopsy process, external assistance personnel are required to be arranged for assistance in the process of taking out the needle core, in addition, the biopsy needle is easy to shake in the process of taking out, and the sampling precision and the pain of the patient are easy to cause;

in order to solve the above problems, the present utility model proposes a biopsy needle structure.

Disclosure of Invention

To solve the problems set forth in the background art. The utility model provides a biopsy needle structure, which has the characteristics of simple and convenient operation without assistance of external personnel, difficult shaking of the biopsy needle when taking out a needle core body, improved sampling accuracy and reduced pain of a patient.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a biopsy needle structure comprises an outer needle, a needle core body and a groove, wherein the needle core body is connected inside the outer needle in a sliding mode, the groove is formed in one end of the needle core body, and extraction components are arranged on the outer needle and the needle core body;

the extraction component comprises a shell, a frame and a sliding block, wherein the shell is arranged outside the needle core body and is of an open structure, the frame is sleeved on the surface of the needle core body, the sliding block is fixed on the upper surface of the frame, and a spring is fixed between the sliding block and the shell.

As a biopsy needle structure, preferably, a pressing plate is fixed on the upper surface of the sliding block, and a moving groove is formed in one side, close to the sliding block, of the surface of the shell.

As the biopsy needle structure is preferable, two groups of limit rods which are symmetrically arranged are arranged in the moving groove, two ends of each limit rod are fixed on the surface of the shell, a sliding hole is formed in one side, close to the limit rods, of the surface of the sliding block, the sliding block is connected with the limit rods in a sliding mode through the sliding hole, and the spring is wound on one group of surfaces of the limit rods.

As a biopsy needle structure, preferably, a handle is fixed on one side of the surface of the outer needle, which is close to the shell, a plurality of groups of holding grooves which are arranged at equal intervals are formed on the surface of the handle, and the shell is fixed on the surface of the handle.

In a preferred biopsy needle structure of the present utility model, a scale plate is fixed to the upper surface of the housing near the pressing plate.

The biopsy needle structure of the utility model is preferable, and the biopsy needle structure further comprises a mounting assembly which is arranged in the frame, wherein the mounting assembly comprises two groups of extrusion blocks which are symmetrically arranged in the frame, and an adjusting bolt which is rotationally connected to one side of the two groups of extrusion blocks away from each other through a bearing, and a telescopic rod which is fixed between the frame and the extrusion blocks.

As a biopsy needle structure, preferably, the needle core body is positioned between two groups of extrusion blocks, the surface of the adjusting bolt is in threaded connection with the inside of the frame, one end of the adjusting bolt, which is far away from the extrusion blocks, penetrates through the inside of the shell and extends to the outside of the shell, a sliding groove is formed in one side, close to the adjusting bolt, of the surface of the shell, and the adjusting bolt is in sliding connection with the shell through the sliding groove.

Compared with the prior art, the utility model has the beneficial effects that:

through having set up the subassembly that draws, through pressing down the pressing plate, and then drive the slider and remove, and then drive the spring and compress, along with the removal of slider and drive the frame and remove, and then drive the nook closing member body and remove, puncture through the nook closing member body to appointed position, after the puncture is accomplished, loosen the pressing plate, the spring is rebound this moment, the nook closing member body is automatic to retract and is reset, cooperation through recess and outer needle cuts off the tissue fast, need not to assist through outside personnel, and is easy operation is convenient, when taking out the nook closing member body, make the biopsy needle be difficult for appearing the shake condition, the degree of accuracy of sample has been improved and patient's misery has been reduced, and added the installation component on this mechanism, be convenient for install the nook closing member body and dismantle, conveniently tear down the nook closing member body and take off and disinfect, the reutilization is convenient, and cost is saved.

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 housing of the present utility model;

FIG. 3 is a partial top view of the overall structure of the present utility model;

FIG. 4 is a partial cross-sectional view of the structure of the outer needle of the present utility model;

in the figure:

1. an outer needle; 2. a needle core body; 3. a groove;

4. an extraction assembly; 41. a housing; 42. a frame; 43. pressing the plate; 44. a slide block; 45. a limit rod; 46. a spring; 47. a scale plate; 48. a grip; 49. a holding groove; 411. a moving groove;

5. a mounting assembly; 51. extruding a block; 52. an adjusting bolt; 53. a telescopic rod; 54. a sliding groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1:

a biopsy needle structure comprises an outer needle 1, a needle core body 2 which is connected inside the outer needle 1 in a sliding way, and a groove 3 which is formed at one end of the needle core body 2.

In this embodiment: existing device { public (announcement) number }: CN204562317U discloses a novel biopsy needle, in which the biopsy needle, the needle core and the notch proposed in the present document are disclosed, and the outer needle 1, the needle core body 2 and the groove 3 in the present document adopt the same technical means in the prior art, which are not described in detail herein, and the present subject utility model is further improved, and the details refer to the following disclosure technology; in order to solve the technical problems in the prior art, as disclosed in the background art, although the process of cutting off tissues is quite natural, convenient and quick, and pain of a patient is reduced, in the current puncture biopsy process, external assistance personnel are required to be arranged for assistance when taking out a needle core, in addition, shake of a biopsy needle is easily caused in the process of taking out, sampling precision and pain of an increased patient are easily caused, and the problems are obviously problems which are actually existing and are difficult to solve in combination with use, and in order to solve the technical problems, an extraction assembly 4 and an installation assembly 5 are added to the file of the utility model.

Further, the method comprises the following steps:

as shown in fig. 1, 2, 3 and 4:

the outer needle 1 and the needle core body 2 are provided with an extraction assembly 4. The extraction assembly 4 comprises a shell 41 which is arranged outside the needle core body 2 and is in an open structure, a frame 42 which is sleeved on the surface of the needle core body 2, a sliding block 44 which is fixed on the upper surface of the frame 42, and a spring 46 which is fixed between the sliding block 44 and the shell 41.

In this embodiment: when the biopsy needle structure is used, firstly, the needle head of the outer needle 1 is aligned with a region to be detected of a patient, the slide block 44 is pushed to move, the spring 46 is pressed along with the movement of the slide block 44, the frame 42 is driven to move in the shell 41, the needle core body 2 is driven to move through the frame 42 until the groove 3 on the needle core body 2 extends out of the head of the outer needle 1, then, after the outer needle 1 penetrates through skin and reaches target tissues through an observation ultrasonic instrument (not shown in the figure), the slide block 44 is released, the spring 46 rebounds at the moment, and the needle core body 2 is driven to move in the outer needle 1, so that the needle core body 2 is reset, in the process, the tissue is quickly cut off through the cooperation of the groove 3 on the needle core body 2 and the head of the outer needle 1, so that assistance by external personnel is not needed, the biopsy needle is easy and convenient to operate, the shaking condition of the biopsy needle is not easy to occur when the needle core body 2 is taken out, the sampling accuracy is improved, and the pain of the patient is reduced.

In an alternative embodiment, the pressing plate 43 is fixed on the upper surface of the slider 44, the moving slot 411 is formed on one side of the surface of the housing 41 close to the slider 44, two groups of limit rods 45 are symmetrically arranged in the moving slot 411, two ends of each limit rod 45 are fixed on the surface of the housing 41, a sliding hole is formed on one side of the surface of the slider 44 close to the limit rods 45, the slider 44 and the limit rods 45 are in sliding connection through the sliding hole, and the spring 46 is wound on the surface of one group of limit rods 45.

In this embodiment: then, the pressing plate 43 is pressed by the thumb, so that the pressing plate 43 drives the sliding block 44 to move, the sliding block 44 moves in the moving slot 411, the sliding block 44 slides on the surface of the limiting rod 45 through the opened sliding hole, the limiting rod 45 is used for limiting the sliding block 44, and the sliding block 44 is more stable in the moving process.

In an alternative embodiment, a grip 48 is fixed on one side of the surface of the outer needle 1 near the housing 41, a plurality of groups of holding grooves 49 are formed on the surface of the grip 48 and are arranged at equal intervals, the housing 41 is fixed on the surface of the grip 48, and a scale plate 47 is fixed on the upper surface of the housing 41 near the pressing plate 43.

In this embodiment: by holding the grip 48 by hand and placing four fingers inside the holding groove 49 and placing the thumb on the pressing plate 43, the comfort of use of the biopsy needle can be improved.

Further, the method comprises the steps of;

the biopsy needle structure further comprises a mounting assembly 5 mounted inside the frame 42, the mounting assembly 5 comprises two groups of extrusion blocks 51 symmetrically arranged inside the frame 42 and an adjusting bolt 52 which is rotationally connected to one side of the two groups of extrusion blocks 51 far away from each other through a bearing, and a telescopic rod 53 which is fixed between the frame 42 and the extrusion blocks 51, the needle core body 2 is positioned between the two groups of extrusion blocks 51, the surface of the adjusting bolt 52 is in threaded connection with the inside of the frame 42, one end of the adjusting bolt 52 far away from the extrusion blocks 51 penetrates through the inside of the shell 41 and extends to the outside of the shell 41, a sliding groove 54 is formed in one side of the surface of the shell 41 close to the adjusting bolt 52, and the adjusting bolt 52 is in sliding connection with the shell 41 through the sliding groove 54.

In this embodiment: when the needle core body 2 needs to be installed, through moving the needle core body 2 between two groups of extrusion blocks 51, then rotating the adjusting bolt 52, and then driving the adjusting bolt 52 to move towards the needle core body 2 in the extrusion blocks 51, in the process, along with the movement of the extrusion blocks 51 and driving the telescopic rod 53 to stretch, the extrusion blocks 51 are limited through the telescopic rod 53, the movement process of the extrusion blocks 51 is more stable, the needle core body 2 is fixed through the mutual extrusion of the two groups of extrusion blocks 51, along with the movement of the frame 42, the adjusting bolt 52 is driven to move in the sliding groove 54 formed in the shell 41, so that the movement of the frame 42 is not limited, when the needle core body 2 is disassembled, the machine shell is disassembled in the reverse operation, the installation and the disassembly of the needle core body 2 are facilitated, the secondary utilization is facilitated, and the cost is saved.

The working principle and the using flow of the utility model are as follows: in the biopsy needle structure, when in use, firstly, the needle head of an outer needle 1 is aligned with a region to be detected of a patient, then a grip 48 is held by a hand, four fingers are positioned in a holding groove 49, a thumb is placed on a pressing plate 43, through the operation, the comfort of the biopsy needle in use can be improved, then the pressing plate 43 is pressed by the thumb, the pressing plate 43 drives a sliding block 44 to move, the sliding block 44 slides on the surface of a limiting rod 45 through a sliding hole formed in the sliding block 44, the sliding block 44 is limited by the limiting rod 45, the sliding block 44 is more stable in the moving process, the sliding block 44 moves along with the movement of the sliding block 44 and the compression of a compression spring 46, the frame 42 is driven to move in a shell 41, the needle core body 2 is driven to move through the frame 42 until a groove 3 on the needle core body 2 extends out of the head of the outer needle 1, in the process, the pressing plate 43 moves along with the moving distance on a scale plate 47, to precisely see the projected distance of the needle core body 2, thereby improving the detection accuracy, then, after the outer needle 1 is penetrated through the skin and reaches the target tissue by observing an ultrasonic instrument (not shown in the figure), then, the pressing plate 43 is released, the spring 46 is rebounded at this time, and the needle core body 2 is driven to move inside the outer needle 1, so that the needle core body 2 is reset, in the process, the tissue is rapidly cut off by matching the groove 3 on the needle core body 2 with the head of the outer needle 1, thus, the assistance by an external person is not needed, the operation is simple and convenient, the biopsy needle is not easy to shake when the needle core body 2 is taken out, the sampling accuracy is improved, the pain of a patient is reduced, when the needle core body 2 needs to be installed, by moving the needle core body 2 between the two groups of pressing blocks 51, and then, the adjusting bolt 52 is rotated, and then drive adjusting bolt 52 at extrusion piece 51 to the direction of needle core body 2 remove, in this process, along with the removal of extrusion piece 51 and drive telescopic link 53 and stretch, carry out spacingly to extrusion piece 51 through telescopic link 53, make extrusion piece 51 remove the in-process more stable, thereby fix needle core body 2 through the mutual extrusion of two sets of extrusion pieces 51, along with the removal of frame 42, along with the removal of drive adjusting bolt 52, make adjusting bolt 52 remove at the sliding tray 54 that casing 41 offered, thereby make the frame 42 remove and be unrestricted, when dismantling, this carries out the reverse operation, the casing realizes dismantling, through this operation, be convenient for install and dismantle needle core body 2, conveniently tear down needle core body 2 and be convenient for the reutilization, save the cost.

Finally, it should be noted that: the foregoing description 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 modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. 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 (7)

1. The utility model provides a biopsy needle structure, is in including outer needle (1) and sliding connection needle core body (2) and seting up inside outer needle (1) recess (3) of needle core body (2) one end, its characterized in that: the outer needle (1) and the needle core body (2) are provided with an extraction component (4);

the extraction component (4) comprises a shell (41) which is arranged outside the needle core body (2) and is of an open structure, a frame (42) which is sleeved on the surface of the needle core body (2) and a sliding block (44) which is fixed on the upper surface of the frame (42), and a spring (46) is fixed between the sliding block (44) and the shell (41).

2. The biopsy needle structure of claim 1, wherein: the upper surface of the sliding block (44) is fixedly provided with a pressing plate (43), and one side, close to the sliding block (44), of the surface of the shell (41) is provided with a moving groove (411).

3. The biopsy needle structure of claim 2, wherein: two groups of limit rods (45) which are symmetrically arranged are arranged in the moving groove (411), two ends of each limit rod (45) are fixed on the surface of the shell (41), a sliding hole is formed in one side, close to the limit rods (45), of the surface of each sliding block (44), the sliding blocks (44) are in sliding connection with the limit rods (45) through the sliding holes, and the springs (46) are wound on one group of the surfaces of the limit rods (45).

4. The biopsy needle structure of claim 3, wherein: a handle (48) is fixed on one side of the surface of the outer needle (1) close to the shell (41), a plurality of groups of holding grooves (49) which are equidistantly arranged are formed in the surface of the handle (48), and the shell (41) is fixed on the surface of the handle (48).

5. The biopsy needle structure of claim 4, wherein: a scale plate (47) is fixed on the upper surface of the shell (41) close to the pressing plate (43).

6. The biopsy needle structure of claim 5, wherein: the device is characterized by further comprising a mounting assembly (5) mounted inside the frame (42), wherein the mounting assembly (5) comprises two groups of extrusion blocks (51) which are symmetrically arranged inside the frame (42), and an adjusting bolt (52) which is rotationally connected to one far side of the two groups of extrusion blocks (51) through a bearing, and a telescopic rod (53) which is fixed between the frame (42) and the extrusion blocks (51).

7. The biopsy needle structure of claim 6, wherein: the needle core body (2) is located between two groups of extrusion blocks (51), the surface of adjusting bolt (52) with the inside threaded connection of frame (42), one end that adjusting bolt (52) kept away from extrusion block (51) runs through inside casing (41) and extends to casing (41) is outside, sliding groove (54) has been seted up on casing (41) surface near adjusting bolt (52) one side, adjusting bolt (52) with casing (41) are passed through sliding groove (54) sliding connection.