Multifunctional biopsy needle

Abstract

The invention relates to a biopsy needle, in particular to a multifunctional biopsy needle. The invention provides a multifunctional biopsy needle capable of being operated in multiple modes, adjustable in puncture depth and zero in range and provided with a safety device, the multifunctional biopsy needle comprises an outer shell, the safety device, a needle body device, a winding device, a spring device, a distance adjusting device and the like, and the winding device, the safety device and the distance adjusting device are connected to the exterior of the outer shell. And a needle body device and a spring device are connected in the outer shell. The biopsy needle is wound outside the body and is inserted into the body of a patient under the guidance of an image, the outer shell is provided with a safety device, the problem that an existing biopsy needle is not operated during puncture is solved, semi-automatic, full-automatic and zero-range emission modes can be selected, and the puncture depth and the sampling length can be adjusted according to the size of a focus, so that the sampling operation can be accurately and safely completed.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a multifunctional biopsy needle. Background Art

[0002] Guiding the puncture needle to the target site of the human body under the guidance of images to achieve cytological biopsy, histological biopsy, cyst aspiration and treatment, etc. is currently an important means of pathological diagnosis and treatment. The puncture needle is an important tool in this type of image-guided surgery. The puncture needle currently used for biopsy usually adopts an inner and outer needle structure. When in use, the target area is punctured, and the needle core and needle tube are fired at one time. The needle tube follows the needle core to puncture, and part of the tissue in the target area is cut by the needle core needle and the needle tube blade. It is placed in the sample groove at the end of the needle core needle and is taken out with the puncture needle. Existing disposable biopsy needles cannot achieve the parallel of separate and automatic firing of the needle core and needle tube, and cannot achieve manual and automatic mode switching on the same needle, cannot adjust the puncture depth, cannot change the sample length, and cannot achieve zero-range sampling and insurance control functions; 1. In some biopsy operations, the operator needs to fire the needle core at the same time. 1. After that, observe the real-time guidance of the image to determine whether the position of the sampling slot is correct, and then launch the needle tube to complete the sampling, that is, multi-mode operation and launch; 2. In actual operation, the surgeon often needs to adjust the puncture depth according to the size of the lesion, change the sample length, and then adjust the puncture depth; 3. Some parts are accompanied by blood vessels or trachea, which require more precise puncture. The existing biopsy devices all have a distance range mode, and cannot complete precise positioning puncture. Therefore, zero-range puncture allows the needle core and the needle tube to directly puncture and cut in situ without winding, and the surgeon does not need to calculate the shooting distance, making the puncture more accurate, convenient and safe; 4. After the conventional biopsy needle is wound, the needle shell is held by hand for puncture, which is easy to operate accidentally, resulting in incomplete puncture and cutting sampling, causing operation failure and secondary injury to the patient. The safety device of the present invention can lock the action before puncture, and release the safety after the puncture is completed, thereby improving the safety of the operation. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a multifunctional biopsy needle, which can not only realize the launch of multiple operation modes of the needle core and the needle tube, but also realize the adjustment of the puncture depth, and complete a more precise zero-range puncture operation, and is equipped with a safety device to improve the safety of the operation. At the same time, the exquisite and unique safety control function ensures the safety of this complex full-function puncture design in actual clinical operation.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a multifunctional biopsy needle, comprising: an outer shell, a safety device, a winding device, a distance adjustment device, a needle body device and a spring device, wherein a buckle is provided inside the outer shell, and the upper outer shell and the lower outer shell are buckled and connected up and down, the safety device is arranged at the side of the upper outer shell, and is provided with a safety block connected from the inside and outside, the winding device is arranged in front of the upper outer shell and the lower outer shell, and is provided with a front and rear connected winding switch, connected to a reset spring, the distance adjustment device is arranged on the upper part of the upper outer shell, and is provided with an adjustment block connected up and down, the needle body device is arranged inside the outer shell, and is provided with a needle core front and back connected to a needle core seat and a needle tube front and back connected to a needle tube seat, and the spring device is arranged inside the outer shell, and is provided with a spring front and back connected to a guide column and a guide sleeve.

[0005] Preferably, the outer shell includes an upper outer shell and a lower outer shell, a buckle is provided inside the outer shell, the upper outer shell is connected to the lower outer shell by buckling up and down, and a semi-automatic and fully automatic firing buttons are provided on the upper part of the upper outer shell. The semi-automatic firing button is placed behind the fully automatic firing button. When the button is pressed, the needle core is automatically fired, and then the fully automatic firing button is pressed again to fire the needle tube. The fully automatic firing button is placed between the distance adjustment device and the semi-automatic firing button. When the fully automatic firing button is pressed, the needle core and the needle tube are fired at the same time.

[0006] Preferably, the safety device includes a safety device and a safety block, which are placed on the side of the upper outer shell. The safety device is provided with a buckle, which is fixedly connected to the safety block through the upper outer shell. The safety device can slide on both sides, driving the safety block and the semi-automatic and fully-automatic firing buttons of the upper outer shell to lock with each other, making them unable to be pressed.

[0007] Preferably, the winding device includes a winding device and a winding switch, which is placed in front of the upper shell and the lower shell, and is buckled and connected to the upper shell. One end of the winding device contacts and connects to the winding switch. A sliding groove is provided inside the outer shell. The winding device can drive the winding switch to slide back and forth. The lower outer shell is covered with a reset spring and is connected to the winding switch.

[0008] Preferably, the distance adjustment device includes a distance adjustment device and an adjustment block, which are placed on the upper part of the upper shell. The distance adjustment device is provided with a buckle which is connected and fixed to the adjustment block through the upper shell body. The distance adjustment device can slide on both sides to set the injection distance. The first setting distance is 25mm, which means that the injection distance of the needle core and needle tube is 25mm. The second setting distance is 18mm, which means that the injection distance of the needle core and needle tube is 18mm.

[0009] Preferably, the needle body device includes a needle core, a needle core seat, a needle tube, and a needle tube seat, which are placed inside the outer shell. The needle core is fixedly connected to the needle core seat, the needle tube is fixedly connected to the needle tube seat, and the rear end is in contact with the spring device.

[0010] Preferably, the spring device includes a spring, a spring guide column, and a spring guide sleeve, which are placed inside the outer shell. One end of the spring is inserted into the spring guide column, and the other end is inserted into the spring guide sleeve. The spring guide column has a buckle and is locked with the spring guide sleeve, and is in contact and connected with the needle device. The beneficial effects of the present invention are:

[0011] Multi-mode operation (including semi-automatic operation and fully automatic operation);

[0012] Realize the adjustment of puncture depth;

[0013] Achieve zero-range precision puncture;

[0014] The safety device is safer;

[0015] The overall appearance is lighter than the existing ones, and the lung biopsy device does not droop when it leaves the hand. It adopts ergonomic design, which is easy to operate and comfortable to touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a three-dimensional front view of the biopsy device of the present invention.

[0018] Figure 2 It is a front view of the outer shell of the biopsy device of the present invention.

[0019] Figure 3 It is a front view of the safety device of the biopsy device of the present invention.

[0020] Figure 4 It is a front view of the winding device of the biopsy device of the present invention.

[0021] Figure 5 It is a front view of the distance adjustment device of the biopsy device of the present invention.

[0022] Figure 6 It is a front view of the needle device of the biopsy device of the present invention.

[0023] Figure 7 It is a front view of the spring device of the biopsy device of the present invention.

[0024] Figure 8 The biopsy device of the present invention is in the state of being ready to fire. Figure 1 Cross-sectional view along the AA direction.

[0025] Fig. 9 The biopsy device of the present invention is in the state of being ready to fire. Figure 1Cross-sectional view along the BB direction.

[0026] Fig.10 The biopsy device of the present invention is in the fired state. Figure 1 Cross-sectional view along CC direction.

[0027] Fig.11 It is a schematic internal stereoscopic diagram of the biopsy device of the present invention.

[0028] Fig.12 This is a partial three-dimensional diagram of the semi-automatic firing button.

[0029] Fig.13 It is a three-dimensional schematic diagram of the fully automatic firing button part.

[0030] Figure numerals: 1. outer shell; 11. upper outer shell; 12. lower outer shell; 13. semi-automatic firing button; 14. fully automatic firing button; 2. safety device; 21. safety block; 3. winding device; 31. winding switch; 4. distance adjustment device; 41. adjustment block; 5. needle body device; 51. needle core; 52. needle core seat; 53. needle tube; 54. needle tube seat; 6. spring device; 61. spring; 62. guide column; 63. guide sleeve; 7. reset spring. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 13 As shown, an embodiment of the present invention provides a multifunctional biopsy needle, and the biopsy device includes: an outer shell 1, a safety device 2, a winding device 3, a distance adjustment device 4, a needle body device 5 and a spring device 6; a buckle is provided inside the outer shell 1, and the upper outer shell 11 and the lower outer shell 12 are buckled and connected up and down, the safety device 2 is arranged on the side of the upper outer shell 11, and is provided with a safety block 21 connected from the inside and outside, the winding device 3 is arranged in front of the upper outer shell 11 and the lower outer shell 12, and is provided with a front and rear connected winding switch 31, connected to a reset spring 7, the distance adjustment device 4 is arranged on the upper part of the upper outer shell 11, and is provided with an upper and lower connected adjustment block 41, the needle body device 5 is arranged inside the outer shell 1, and is provided with a needle core 51 connected to a needle core seat 52 and a needle tube 53 connected to a needle tube seat 54, and the spring device 6 is arranged inside the outer shell 1, and is provided with a spring 61 connected to a guide column 62 and a guide sleeve 63 front and back.

[0033] The outer shell 1 includes an upper outer shell 11 and a lower outer shell 12. A buckle is provided inside the outer shell 1. The upper outer shell 11 is buckled and connected with the lower outer shell 12. A semi-automatic firing button 13 and a fully automatic firing button 14 are provided on the upper part of the upper outer shell 11. The semi-automatic firing button 13 is placed behind the fully automatic firing button 14. When the button is pressed, the needle core 51 is automatically fired. When the fully automatic firing button 14 is pressed again, the needle tube 53 is fired. The fully automatic firing button 14 is placed between the distance adjustment device 4 and the semi-automatic firing button 13. When the fully automatic firing button 14 is pressed, the needle core 51 and the needle tube 53 are fired at the same time.

[0034] The safety device 2 includes a safety device 2 and a safety block 21, which are placed on the side of the upper outer shell 11. The safety device 2 is provided with a buckle, which is fixedly connected to the safety block 21 through the upper outer shell 11. The safety device 2 can slide on both sides, driving the safety block 21 and the semi-automatic and fully-automatic firing buttons of the upper outer shell 11 to lock with each other, making them unable to be pressed.

[0435] The winding device 3 includes a winding device 3 and a winding switch 31, which is placed in front of the upper shell 11 and the lower shell 12, and is buckled with the upper shell 11. One end of the winding device 3 is in contact with the winding switch 31. A sliding groove is provided inside the outer shell 1, and the winding device 3 can drive the winding switch 31 to slide back and forth. The lower outer shell 12 is provided with a reset spring 7 and is connected to the winding switch 31.

[0036] The distance adjustment device 4 includes a distance adjustment device 4 and an adjustment block 41, which is placed on the upper part of the upper shell 11. The distance adjustment device 4 is provided with a buckle connected and fixed with the adjustment block 41 through the upper shell 11. The distance adjustment device 4 can slide on both sides to set the injection distance. The first setting distance is 25mm, which means that the injection distance of the needle core 51 and the needle tube 53 is 25mm. The second setting distance is 18mm, which means that the injection distance of the needle core 51 and the needle tube 53 is 18mm.

[0037] The needle device 5 includes a needle core 51, a needle core seat 52, a needle tube 53, and a needle tube seat 54, which are placed inside the outer shell 1. The needle core 51 is fixedly connected to the needle core seat 52, the needle tube 53 is fixedly connected to the needle tube seat 54, and the rear end is in contact with the spring device.

[0038] The spring device 6 includes a spring 61, a spring guide column 62, and a spring guide sleeve 63, which are placed inside the outer shell 1. One end of the spring 61 is inserted into the spring guide column 62, and the other end is inserted into the spring guide sleeve 63. The spring guide column 62 has a buckle and is locked with the spring guide sleeve 63, and is in contact and connected with the needle device 5.

[0039] In this embodiment, when the needle core 51 and the needle core seat 52 are in the initial state or the fired state, the needle core seat 52 is snapped off from the snap protrusion of the upper outer shell 11, and the spring device 6 is in a compressed state. When the needle tube 53 and the needle tube seat (54) are in the initial state or the fired state, the needle tube seat 54 is snapped off from the snap protrusion of the upper outer shell 11, and the spring device 6 is in a compressed state.

[0040] In this embodiment, when the needle core 51 and the needle core seat 52 are in the ready-to-fire state, the needle core seat 52 snaps into engagement with the snap protrusion of the upper outer shell 11, and the spring device 6 is in the limit compression state. When the needle tube 53 and the needle tube seat 54 are in the ready-to-fire state, the needle tube seat 54 snaps into engagement with the snap protrusion of the upper outer shell 11, and the spring device 6 is also in the limit compression state.

[0041] In this embodiment, the distance adjustment device 4 is located at the 25mm scale position, and the needle core 51, the needle core seat 52, the needle tube 53, and the needle tube seat 54 are all in the ready-to-fire state, pressing the semi-automatic firing button 13 or the fully automatic firing button 14, the needle core 51 and the needle tube 53 will move forward 25mm; the distance adjustment device 4 is located at the 18mm scale position, and the needle core 51, the needle core seat 52, the needle tube 53, and the needle tube seat 54 are all in the ready-to-fire state, pressing the semi-automatic firing button 13 or the fully automatic firing button 14, the needle core 51 and the needle tube 53 will move forward 18mm.

[0042] In this embodiment, the needle core 51 is connected and fixed to the needle core seat 52, that is, the needle core 51 and the needle core seat 52 move synchronously; the needle tube 53 is connected and fixed to the needle tube seat 54, that is, the needle tube 53 and the needle tube seat 54 move synchronously.

[0043] In this embodiment, when the safety device 2 is in the locked position, the needle core 51 and the needle tube 53 are both in the ready-to-fire state. When the semi-automatic firing button 13 or the fully automatic firing button 14 is pressed, the needle core 51 and the needle tube 53 cannot be fired; when the safety device 2 is in the unlocked position, the needle core 51 and the needle tube 53 are both in the ready-to-fire state. When the semi-automatic firing button 13 or the fully automatic firing button 14 is pressed, the needle core 51 and the needle tube 53 can be fired. At this time, misoperation can be effectively prevented.

[0044] In this embodiment, an elastic strip is provided at the rear of the semi-automatic firing button 13 or the fully automatic firing button 14, and the elastic strip can reset the semi-automatic firing button 13 or the fully automatic firing button 14 after being pressed.

[0045] In this embodiment, pressing the winding device 3 drives the winding switch 31 to move the needle core seat 52 and the needle tube seat 54 backward, the needle core seat 52 and the needle tube seat 54 are snap-engaged with the protrusion of the upper shell 11, and the spring device 6 is in the compression limit state and is in a ready-to-fire state. After the semi-automatic firing button 13 is pressed, the needle core seat 52 snaps out of the snap protrusion of the outer shell 11, the spring device 6 is released, and the needle core 51 and the needle core seat 52 complete the firing action of the set position; pressing the full-automatic firing button 14 again, the needle tube seat 54 snaps out of the snap protrusion of the outer shell 11, the spring device 6 is released, and the needle tube 53 and the needle tube seat 54 complete the firing action of the set position.

[0046] Pressing the winding device 3 drives the winding switch 31 to push the needle core seat 52 and the needle tube seat 54 to move backward, and the needle core seat 52 and the needle tube seat 54 are snap-engaged with the protrusion of the upper shell 11. The spring device 6 is in the compression limit state and is in the ready-to-fire state. After the full-automatic firing button 14 is pressed, the needle core seat 52 and the needle tube seat 54 are snap-engaged from the snap protrusion of the upper shell 11, the spring device 6 is released, and the needle core 51 and the needle tube 53 complete the firing action at the set position. The following describes the working process of the biopsy needle:

[0047] A sample groove with a length of 19 mm is provided at the front of the needle core 51, and the biopsy device can obtain tissue samples of different lengths as required.

[0048] The distance adjustment device 4 is located at the 25mm scale position. After the needle core 51 and the needle tube 53 are fired, they will move forward 25mm in sequence, and elastic tissue will enter the sample groove of the needle core 51. The needle tube 53 completely closes the sampling groove of the needle core 51, and the needle tube 53 moves backward in a state of waiting for firing. The 19mm sample groove is completely exposed outside the needle tube 53, and finally a sample with a length of 19mm is obtained; the distance adjustment device 4 is located at the 18mm scale position. After the needle core 51 and the needle tube 53 are fired, they will move forward 18mm in sequence, and elastic tissue will enter the sample groove of the needle core 51. The needle tube 53 completely closes the sampling groove of the needle core 51, and the needle tube 53 moves backward in a state of waiting for firing. The 19mm sample groove is completely exposed outside the needle tube 53, and finally a sample with a length of 17mm is obtained. This adjustment needs to be performed in the state of waiting for firing.

[0049] Press the stringing device 3 backward, the needle core 51 and the needle core seat 52 are in a state ready to fire; press the stringing device 3 again, the needle tube 53 and the needle tube seat 54 are both in a state ready to fire.

[0050] The safety device 2 is in the locked position, the safety block 21 interferes with the semi-automatic firing button 13 and the fully automatic firing button 14 of the upper outer shell 11, and is in a state where firing is impossible; the safety device 2 is in the unlocked position, the safety block 21 does not interfere with the semi-automatic firing button 13 and the fully automatic firing button 14 of the upper outer shell 11, and is in a state where firing is possible.

[0051] In order to facilitate understanding and description, the present invention adopts absolute position relationship for description, wherein the directional word "up" means perpendicular to Figure 1 The paper surface and points to the outside of the paper surface, and "down" means perpendicular to Figure 1 The paper surface and points to the inside of the paper surface, "left" means Figure 1 The left direction in the Figure 1 The right direction in the Figure 1 The upward direction in the Figure 1 The present invention is described from the perspective of a reader or user, but the above directional words cannot be understood or interpreted as limiting the protection scope of the present invention.

[0052] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with technical features and technical solutions, and with technical solutions.

Claims

1. A multifunctional biopsy needle, characterized in that: include: The biopsy needle comprises an outer shell (1), a safety device (2), a winding device (3), a distance adjustment device (4), a needle body device (5) and a spring device (6). A buckle is provided inside the outer shell (1). The upper outer shell (11) and the lower outer shell (12) are buckled and connected to each other. The safety device (2) is arranged on the side of the upper outer shell (11) and is provided with a safety stopper (21) connected from the inside to the outside. The winding device (3) is arranged in front of the upper outer shell (11) and the lower outer shell (12) and is provided with a front spring. The back is connected to the winding switch (31), connected to the reset spring (7), the distance adjustment device (4), arranged on the upper part of the upper outer shell (11), provided with an adjustment block (41) connected up and down, the needle body device (5), arranged inside the outer shell (1), provided with a needle core (51) connected to the needle core seat (52) and a needle tube (53) connected to the needle tube seat (54) front and back, and the spring device (6), arranged inside the outer shell (1), provided with a spring (61) connected to the guide column (62) and the guide sleeve (63) front and back.

2. A multifunctional biopsy needle according to claim 1, characterized in that: The outer shell (1) comprises an upper outer shell (11) and a lower outer shell (12). A buckle is provided inside the outer shell (1). The upper outer shell (11) and the lower outer shell (12) are buckled and connected. A semi-automatic (13) and a fully automatic firing button (14) are provided on the upper part of the upper outer shell (11). The semi-automatic firing button (13) is arranged behind the fully automatic firing button (14). When the button is pressed, the needle core (51) is automatically fired. When the fully automatic firing button (14) is pressed again, the needle tube (53) is fired. The fully automatic firing button (14) is arranged between the distance adjustment device (4) and the semi-automatic firing button (13). When the fully automatic firing button (14) is pressed, the needle core (51) and the needle tube (53) are fired simultaneously.

3. The multifunctional biopsy needle according to claim 1, characterized in that: The safety device (2) comprises a safety device (2) and a safety block (21), which are arranged on the side of the upper outer shell (11). The safety device (2) is provided with a buckle, which is fixedly connected to the safety block (21) through the upper outer shell (11). The safety device (2) can slide on both sides, driving the safety block (21) and the semi-automatic and fully automatic firing buttons of the upper outer shell (11) to be locked with each other, so that they cannot be pressed.

4. A multifunctional biopsy needle according to claim 1, characterized in that: The winding device (3) comprises a winding device (3) and a winding switch (31), which is arranged in front of the upper shell (11) and the lower shell (12) and is buckled and connected with the upper shell (11). One end of the winding device (3) contacts and connects with the winding switch (31). A sliding groove is provided inside the outer shell (1). The winding device (3) can drive the winding switch (31) to slide forward and backward. The lower outer shell (12) is sleeved with a reset spring (7) and is connected with the winding switch (31).

5. A multifunctional biopsy needle according to claim 1, characterized in that: The distance adjustment device (4) comprises a distance adjustment device (4) and an adjustment block (41), which are arranged on the upper part of the upper shell (11). The distance adjustment device (4) is provided with a buckle connected and fixed to the adjustment block (41) through the upper shell (11). The distance adjustment device (4) can slide on both sides to set the injection distance. The first setting distance is 25 mm, which means that the injection distance of the needle core (51) and the needle tube (53) is 25 mm. The second setting distance is 18 mm, which means that the injection distance of the needle core (51) and the needle tube (53) is 18 mm.

6. A multifunctional biopsy needle according to claim 1, characterized in that: The needle body device (5) comprises a needle core (51), a needle core seat (52), a needle tube (53), and a needle tube seat (54), and is disposed inside the outer shell (1); the needle core (51) is fixedly connected to the needle core seat (52), the needle tube (53) is fixedly connected to the needle tube seat (54), and the rear end is in contact with the spring device.

7. A multifunctional biopsy needle according to claim 1, characterized in that: The spring device (6) comprises a spring (61), a spring guide column (62) and a spring guide sleeve (63), and is placed inside the outer shell (1). One end of the spring (61) is inserted into the spring guide column (62), and the other end is inserted into the spring guide sleeve (63). The spring guide column (62) has a buckle and is locked with the spring guide sleeve (63), and is in contact with the needle body device (5).

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