A renal puncture biopsy gun for avoiding empty suction and a method of using the same

Abstract

The invention discloses a renal puncture biopsy gun for avoiding empty suction, comprising a first shell, a second shell, a puncture biopsy needle, a sleeve, a first ejection assembly, a second ejection assembly, an adjustment assembly and a fixing assembly. The first shell and the second shell are both symmetrically provided with semicircular grooves on one end side walls. The invention can realize that the first and second push blocks successively cause collision and limit between the slider during puncture by adding the first ejection assembly, the second ejection assembly and the adjustment assembly, thereby avoiding that the puncture biopsy needle and the sleeve ejection point are too long to cause penetrating empty suction, and reducing the risk of puncture bleeding. By adjusting the distance between the slider and the first and second push blocks, the distance between the puncture biopsy needle and the sleeve can be adjusted and controlled, thereby effectively improving the safety of puncture sampling, reducing the operating difficulty of medical staff, and improving the convenience and accuracy of medical staff when performing renal biopsy puncture on patients.

Description

Technical Field

[0001] The invention relates to the technical field of renal puncture biopsy guns, in particular to a renal puncture biopsy gun for avoiding empty suction and a use method thereof. Background Art

[0002] Renal biopsy puncture is an important diagnostic method to determine the specific type of kidney disease and determine the treatment plan; the renal biopsy puncture gun is often used in conjunction with B-ultrasound equipment to accurately observe the puncture site and the length of puncture required by the biopsy puncture gun.

[0003] However, the existing renal biopsy puncture guns cannot adjust the puncture length of the puncture position. When the ejected length of the puncture needle exceeds the required puncture position, the cutting groove at the end of the puncture biopsy needle in the biopsy gun exceeds the puncture site, causing the cutting groove to sample the tissue at the puncture site, making it impossible to cut the tissue after the cannula is ejected, resulting in empty suction of the biopsy gun, resulting in the inability to sample the tissue at the puncture site for biopsy during this operation. At the same time, when the puncture biopsy needle penetrates the kidney, puncture bleeding is easily caused, affecting the patient's treatment and reducing the convenience and accuracy of medical staff in performing renal biopsy puncture on patients. Summary of the invention

[0004] The object of the present invention is to provide a renal puncture biopsy gun and a method of using the same which can improve the accuracy and convenience of puncture and avoid empty aspiration, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a renal puncture biopsy gun for avoiding empty suction, comprising a first shell, a second shell, a puncture biopsy needle, a sleeve, a first ejection assembly, a second ejection assembly, an adjustment assembly and a fixing assembly, wherein the first shell and the second shell are both symmetrically provided with semicircular grooves on one end side walls, and the first shell and the second shell are both provided with guide grooves inside; a cutting groove for sampling renal tissue is provided on one end side wall of the puncture biopsy needle; the sleeve is sleeved on the outside of the puncture biopsy needle, and the inner part of the sleeve is provided with a guide groove; ... An arc-shaped cutter is fixedly provided on the wall, and the arc-shaped cutter is located at one side of the end of the cutting groove. One end of the sleeve passes through the semicircular groove and extends to the outside of the first shell and the second shell. A connecting rod is fixedly sleeved on the outside of one end of the puncture biopsy needle and one end of the sleeve. Both sides of the connecting rod are fixedly provided with guide blocks slidably connected to the guide groove; a first ejection component is installed on one side of the end of the puncture biopsy needle, and the puncture biopsy needle is loaded and triggered to eject so that it punctures the kidney puncture position; a second ejection component is installed on the sleeve On one side of the end of the tube, the sleeve is loaded and the puncture biopsy needle is launched by the first ejection component, and the second ejection component is triggered to eject the sleeve to cover and shield the tissue sampled in the cutting groove at the end of the puncture biopsy needle; the adjustment component is installed in the interior of the first shell to adjust the ejection puncture distance of the puncture biopsy needle and the sleeve; the fixing component is installed on one side of the second shell to fix the first shell and the second shell; by adding the first shell, the second shell, the puncture biopsy needle, the sleeve, the first ejection component, the second ejection component, the adjustment component and the fixing component, the first and second push blocks can be collided with the slider in succession during puncture to avoid the risk of penetration caused by the excessive length of the puncture biopsy needle and the sleeve ejection point, and reduce the risk of puncture bleeding. By adjusting the distance between the slider and the first and second push blocks, the distance between the puncture biopsy needle and the sleeve can be adjusted and controlled, which can effectively improve the safety of puncture sampling, reduce the difficulty of operation of medical staff, and improve the convenience and accuracy of medical staff when performing renal biopsy puncture on patients.

[0006] Preferably, the adjustment component includes a first slide slot provided on the first housing, a second slide slot is provided above one end of the first slide slot in parallel, a slider is slidably provided inside the first slide slot and the second slide slot, one end of the slider passes through the first slide slot and the second slide slot to extend to the outside of the first housing and is fixedly connected to the pointer, one end of the slider away from the pointer extends to the inside of the first housing and is fixedly connected to two ends of a U-shaped rod, a mounting slot is provided on the U-shaped rod, a toothed plate is fixedly provided on one side of the mounting slot, a gear is meshed on one side of the toothed plate, a rotating rod is fixedly provided in the middle of the gear, One end of the rotating rod passes through the first shell and extends outward to be fixedly connected to the handle, a limit block is fixedly arranged at the end of the rotating rod away from the handle, a U-shaped block is fixedly arranged on the inner wall of the first shell, an inner gear ring meshing with the gear is fixedly arranged in the middle of the inner wall of the U-shaped block, and one end of the rotating rod passes through the U-shaped block and extends to the other side thereof to be fixedly connected to the limit block, a return spring is sleeved between the U-shaped block and the limit block and on the rotating rod; the addition of the adjustment component can adjust the ejection length of the puncture biopsy needle and the cannula to avoid puncture of the puncture sampling site, thereby increasing the safety of puncture sampling.

[0007] Preferably, the first ejection assembly comprises a first spring, one end of which is fixedly connected to the inner wall of the first housing, and the other end of which is in contact with one end of the puncture biopsy needle;

[0008] The first ejection assembly also includes a first pushing block slidably arranged inside the first sliding slot, one side of the first pushing block is fixedly provided with a first connecting block, one side of the first connecting block is provided with a first slot matching the connecting rod, an upper side of the first pushing block is fixedly provided with an arc-shaped ratchet tooth, one side of the arc-shaped ratchet tooth is meshed with a stopping tooth, one end of the stopping tooth is fixedly connected to one end of the fixing block at an end away from the stopping tooth, and an adjusting groove is provided on one side of the stopping tooth and located on the first shell, the fixing block is slidably arranged inside the adjusting groove and one end of the fixing block extends to the outside of the adjusting groove and is fixedly connected to the pushing handle, elastic strips are fixedly arranged on both sides of the end of the fixing block, a blocking block is fixedly arranged on the side wall of one end of the elastic strip away from the fixing block, a guide rail is fixedly arranged on one side of the elastic strip and on the inner wall of the first shell, and buckle grooves matching the blocking block are equidistantly provided on the inner wall of the guide rail, and the addition of the first ejection assembly facilitates the stored force ejection of the puncture biopsy needle.

[0009] Preferably, the second elastic component comprises a second spring sleeved on the sleeve, and the second spring is arranged inside the first housing;

[0010] The second elastic component also includes a second pushing block slidably arranged in the second sliding groove, a second connecting block is fixedly arranged on one side of the second pushing block, a second card slot matching the connecting rod is opened on one side of the second connecting block, a fixed hook is fixedly arranged on the upper side of the second pushing block, a hook plate matching the connecting rod is arranged on the upper side of the fixed hook, a hook tip is arranged at one end of the hook plate, a hanger is arranged on one side of the hook plate, the hanger is fixedly connected to the inner wall of the first shell body, the two sides of the hook plate are rotatably connected to the hanger through an axle rod, a spring sheet is arranged below the end of the hook plate away from the hook tip, the two sides of the spring sheet are fixedly connected to the two sides of the hanger, the A guide cylinder is provided on the side of the hook plate away from the spring sheet and is fixedly provided on the hanger, one end of the guide cylinder is connected to a constraint cylinder, a push rod is slidably provided inside the guide cylinder, one end of the push rod penetrates the constraint cylinder and extends outward to be fixedly connected to the impact plate, a constraint block is slidably provided inside the constraint cylinder, the constraint block is fixedly sleeved on the push rod, one end of the push rod away from the impact plate penetrates the guide cylinder and extends outward to contact the hook plate, a strike rod is fixedly provided on the side of the impact plate away from the push rod and located on one side of the arc-shaped ratchet; by adding a second ejection assembly, the sleeve can be ejected by storing force, and a chronological ejection sequence can be achieved with the puncture biopsy needle.

[0011] Preferably, the fixing assembly includes a through hole opened on the second shell, the inner wall of the first shell is fixedly provided with a screw barrel aligned with the through hole, and a locking screw matching the screw barrel is inserted into the through hole, so that the fixing assembly can realize the installation and disassembly between the first and second shells.

[0012] Preferably, a scale is fixedly provided on one side of the first slide groove and the second slide groove and on the outer side wall of the first shell, so as to facilitate observation of the adjustment distance between the slider and the first and second push blocks.

[0013] Preferably, a non-slip handle is fixedly provided on one side of the first pushing block and the second pushing block, so as to facilitate medical staff to press and push the first and second pushing blocks.

[0014] Preferably, the elastic strip is made of elastic material to facilitate the sliding of the elastic strip inside the guide rail.

[0015] Preferably, both sides of the inner wall of the U-shaped block are provided with limiting grooves, and a limiting strip is slidably provided inside the limiting groove, and one side of the limiting strip is fixedly connected to the side wall of the U-shaped rod, thereby increasing the sliding stability of the U-shaped rod.

[0016] The present invention also provides a method for using a renal puncture biopsy gun that avoids empty suction, and the specific steps are as follows:

[0017] S1. First, the first shell and the second shell are disassembled by the fixing assembly, and then the puncture biopsy needle is inserted into the sleeve. After the puncture biopsy needle and the sleeve are sleeved and placed, the connecting rods at the ends of the two are respectively clamped in the first clamping groove on the side of the first connecting block and the second clamping groove on the side of the second connecting block, so that the puncture biopsy needle and the sleeve are installed in the first shell. Finally, the first shell and the second shell are clamped and fixed by the fixing assembly. One end of the sleeve after installation extends outward through the semicircular groove provided at the ends of the first shell and the second shell, and the ends of the puncture biopsy needle and the sleeve are respectively connected to the first ejection assembly and the second ejection assembly;

[0018] S2, after the puncture biopsy needle and the cannula are connected to the first ejection assembly and the second ejection assembly respectively, when it is necessary to perform a puncture biopsy on the patient, the first push block is first pushed to make the end of the puncture biopsy needle squeeze the first spring to store energy, and when the first push block moves to one side of the stop tooth, the arc-shaped ratchet squeezes the stop tooth to deform and pass over the stop tooth, and the push of the first push block can be stopped at this time, so as to realize the upward energy storage of the puncture biopsy needle;

[0019] S3, after the puncture biopsy needle moves upward and accumulates energy, the second push block is pushed again to drive the sleeve to move, and the second spring outside the sleeve is pulled to move, so that the second spring is stretched and accumulates energy. When the second push block drives the fixed hook to pass over the hook tip at one end of the hook plate, the spring sheet pushes the hook plate downward, so that the hook tip of the hook plate stops the fixed hook. At this time, the second push block is stopped to realize the upward energy accumulation of the sleeve.

[0020] S4, after the puncture biopsy needle and the cannula are both advanced and energized, the puncture biopsy needle is now stored inside the cannula, and then the cannula is punctured into the puncture site of the patient, and the puncture position of the cannula is observed with the help of B-ultrasound equipment, and the puncture position of the cannula is positioned and adjusted;

[0021] S5. After the cannula is punctured and positioned, the ejection distance of the puncture biopsy needle is adjusted according to the puncture length required by the puncture position. During the adjustment, the slider inside the first slide groove and the second slide groove is adjusted by the adjustment component to adjust the distance between the slider and the first push block and the second push block. At this time, the ejection distance of the puncture biopsy needle and the cannula can be adjusted;

[0022] S6. After the ejection distance is adjusted, the push handle at the end of the first shell is pushed, so that the fixed block drives the elastic strips on both sides below to slide inside the guide rail, so that the clamping block on the side wall of the end of the elastic strip moves in the buckle groove. At this time, the fixed block drives the stop tooth to move upward, so that the stop tooth is separated from the arc-shaped ratchet tooth, so that the first ejection assembly is triggered to eject. At this time, the first spring releases elastic potential energy to push the puncture biopsy needle out so that the end with the cutting groove at the end thereof is inserted into the tissue to take tissue samples;

[0023] S7. After the first ejection assembly is triggered to eject, the impact rod can push the second ejection assembly to trigger the ejection, so that the second spring releases elastic potential energy, pushes the sleeve to extend and puncture into the punctured tissue, and at this time, the arc-shaped cutter inside the sleeve can cut the sampled tissue in the cutting groove, so that the cut tissue stays in the cutting groove, and the sleeve can cover the puncture biopsy needle, thereby improving the safety of the sampled tissue stored in the cutting groove;

[0024] S8. After puncture sampling, the cannula is pulled out from the puncture site of the patient, and the second push block is pushed to move. The action S is repeated to put the cannula in the upward energy storage state again. At this time, the cutting groove at the end of the puncture biopsy needle in the cannula can be exposed, and the sampled tissue in the cutting groove can be taken out. At this time, the puncture biopsy tissue sampling process can be completed.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention optimizes the existing renal puncture biopsy gun, and by adding a first shell, a second shell, a puncture biopsy needle, a cannula, a first ejection assembly, a second ejection assembly, an adjustment assembly and a fixing assembly, the first and second push blocks can successively cause collision and limit between the slider during puncture, thereby avoiding that the puncture biopsy needle and the cannula ejection point are too long to cause penetration and empty suction, and reducing the risk of puncture bleeding. By adjusting the distance between the slider and the first and second push blocks, the distance between the puncture biopsy needle and the cannula can be adjusted and controlled, which can effectively improve the safety of puncture sampling, reduce the operating difficulty of medical staff, and improve the convenience and accuracy of medical staff when performing renal biopsy puncture on patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a side view of the present invention;

[0029] Figure 3It is a schematic diagram of the structure in which the first ejection assembly and the second ejection assembly are installed inside the first housing in the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure between the puncture biopsy needle and the cannula in the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the connection between the first ejection assembly and the puncture biopsy needle in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the first ejection assembly in the present invention;

[0033] Figure 7 It is a schematic structural diagram of the connection between the second ejection assembly and the sleeve in the present invention;

[0034] Figure 8 is a schematic structural diagram of the second ejection assembly in the present invention;

[0035] Fig. 9 It is a cross-sectional view of the guide cylinder and the constraint cylinder in the present invention;

[0036] Fig.10 is a cross-sectional view of the sleeve in the present invention;

[0037] Fig.11 It is a structural schematic diagram of the U-shaped rod in the present invention;

[0038] Fig.12 It is a schematic diagram of the structure of the separation between the tooth plate and the gear in the adjustment assembly of the present invention;

[0039] Fig.13 It is a schematic diagram of the structure in which the adjustment component is installed inside the first housing in the present invention;

[0040] Fig.14 For the present invention Fig.13 The enlarged view of point A in the middle;

[0041] Fig.15 It is a schematic diagram of the internal structure of the second shell in the present invention.

[0042] In the figure: 1, first housing; 2, second housing; 3, semicircular groove; 4, guide groove; 5, puncture biopsy needle; 6, cutting groove; 7, sleeve; 8, connecting rod; 9, guide block; 10, first slide groove; 11, second slide groove; 12, slider; 13, pointer; 14, U-shaped rod; 15, mounting groove; 16, tooth plate; 17, gear; 18, rotating rod; 19, handle; 20, limit block; 21, U-shaped block; 22, inner gear ring; 23, reset spring; 24, first spring; 25, restraint cylinder; 26, first push block; 27, first connecting block; 28, first slot; 29, arc ratchet; 30 , stop tooth; 31, fixed block; 32, push handle; 33, adjustment slot; 34, elastic strip; 35, block; 36, guide rail; 37, buckle slot; 38, second spring; 39, second push block; 40, second connecting block; 41, second slot; 42, fixed hook; 43, hook plate; 44, hanger; 45, shaft; 46, spring piece; 47, guide cylinder; 48, push rod; 49, impact plate; 50, constraint block; 51, impact rod; 52, arc cutter; 53, through hole; 54, screw barrel; 55, locking screw; 56, scale; 57, anti-slip handle; 58, limit slot; 59, limit strip. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1

[0045] See also Figure 1-Figure 15A renal puncture biopsy gun for avoiding empty suction shown in the figure comprises a first shell 1, a second shell 2, a puncture biopsy needle 5, a sleeve 7, a first ejection assembly, a second ejection assembly, an adjustment assembly and a fixing assembly. The side walls of one end of the first shell 1 and the second shell 2 are symmetrically provided with semicircular grooves 3, the interiors of the first shell 1 and the second shell 2 are provided with guide grooves 4, and the side wall of one end of the puncture biopsy needle 5 is provided with a cutting groove 6 for sampling renal tissue; the sleeve 7 is sleeved on the outside of the puncture biopsy needle 5, and an arc-shaped cutter 52 is fixed on the inner wall of the sleeve 7, and the arc-shaped cutter 52 is located on one side of the end of the cutting groove 6, one end of the sleeve 7 passes through the semicircular groove 3 and extends to the outside of the first shell 1 and the second shell 2, and one end of the puncture biopsy needle 5 and the sleeve 7 are provided with a guide groove 4. A connecting rod 8 is fixedly sleeved on the outer side of one end, and guide blocks 9 slidably connected to the guide groove 4 are fixedly provided on both sides of the connecting rod 8; the first ejection component is installed on one side of the end of the puncture biopsy needle 5, and the puncture biopsy needle 5 is loaded and triggered to eject so that it punctures the kidney puncture position; the second ejection component is installed on one side of the end of the sleeve 7, and after the sleeve 7 is loaded and the puncture biopsy needle 5 is launched by the first ejection component, the second ejection component is triggered to eject the sleeve 7 to cover and shield the sampled tissue in the cutting groove 6 at the end of the puncture biopsy needle 5; the adjustment component is installed inside the first shell 1 to adjust the ejection puncture distance of the puncture biopsy needle 5 and the sleeve 7; the fixing component is installed on one side of the second shell 2, and is fixed between the first shell 1 and the second shell 2.

[0046] See also Figure 2 , Figure 3 and Figure 11-13 The adjustment assembly shown in the figure includes a first slide groove 10 opened on the first housing 1, a second slide groove 11 is arranged parallel to one end of the first slide groove 10, a slider 12 is slidably arranged inside the first slide groove 10 and the second slide groove 11, one end of the slider 12 passes through the first slide groove 10 and the second slide groove 11 to extend to the outside of the first housing 1 and is fixedly connected to the pointer 13, and the end of the slider 12 away from the pointer 13 extends to the inside of the first housing 1 and is fixedly connected to the two ends of the U-shaped rod 14, and the U-shaped rod 14 is provided with a mounting groove 15, and a tooth plate 16 is fixedly arranged on one side of the inner side of the mounting groove 15. A gear 17 is meshed on one side of 16, a rotating rod 18 is fixed in the middle of the gear 17, one end of the rotating rod 18 passes through the first shell 1 and extends outward to be fixedly connected to the handle 19, a limit block 20 is fixedly provided on the end of the rotating rod 18 away from the handle 19, a U-shaped block 21 is fixedly provided on the inner wall of the first shell 1, an inner gear ring 22 meshing with the gear 17 is fixedly provided in the middle of the inner wall of the U-shaped block 21, and one end of the rotating rod 18 passes through the U-shaped block 21 and extends to the other side thereof to be fixedly connected to the limit block 20, a return spring 23 is sleeved between the U-shaped block 21 and the limit block 20 and on the rotating rod 18.

[0047] See also Figure 2-Figure 6The first ejection assembly shown in the figure includes a first spring 24, one end of which is fixedly connected to the inner wall of the first housing 1, and the other end of the first spring 24 is in contact with one end of the puncture biopsy needle 5;

[0048] See also Figure 2-Figure 6 The first ejection assembly shown in the figure also includes a first pushing block 26 slidably arranged inside the first sliding groove 10, a first connecting block 27 is fixedly arranged on one side of the first pushing block 26, a first slot 28 matching the connecting rod 8 is opened on one side of the first connecting block 27, an arc-shaped ratchet 29 is fixedly arranged on one side of the upper side of the first pushing block 26, a stop tooth 30 is meshed with one side of the arc-shaped ratchet 29, one end of the stop tooth 30 is fixedly connected to one end of the fixed block 31, a push handle 32 is fixedly arranged on one end of the fixed block 31 away from the stop tooth 30, and one end of the stop tooth 30 is engaged with the stop tooth 30. An adjusting groove 33 is provided on the side and located on the first shell 1, a fixing block 31 is slidably arranged inside the adjusting groove 33 and one end of the fixing block 31 extends to the outside of the adjusting groove 33 and is fixedly connected to the push handle 32, elastic strips 34 are fixedly provided on both sides of the end of the fixing block 31, a clamping block 35 is fixedly provided on the side wall of one end of the elastic strip 34 away from the fixing block 31, a guide rail 36 is fixedly provided on one side of the elastic strip 34 and located on the inner wall of the first shell 1, and buckle grooves 37 matching the clamping block 35 are provided on the inner wall of the guide rail 36 at equal distances; the elastic strip 34 is made of elastic material.

[0049] See also Figure 2-Figure 4 and Figure 7-Figure 9 The second elastic component shown in the figure includes a second spring 38 which is sleeved on the sleeve 7, and the second spring 38 is arranged inside the first housing 1;

[0050] See also Figure 2-Figure 4 and Figure 7-Figure 9The second elastic component shown in the figure also includes a second pushing block 39 slidably arranged inside the second sliding groove 11, a second connecting block 40 is fixedly arranged on one side of the second pushing block 39, a second card slot 41 matching the connecting rod 8 is opened on one side of the second connecting block 40, a fixed hook 42 is fixedly arranged on the upper side of the second pushing block 39, a hook plate 43 matching the connecting rod 8 is arranged on the upper side of the fixed hook 42, a hook tip is arranged at one end of the hook plate 43, a hanger 44 is arranged on one side of the hook plate 43, the hanger 44 is fixedly connected to the inner wall of the first shell 1, both sides of the hook plate 43 are rotatably connected to the hanger 44 through a shaft 45, a spring sheet 46 is arranged below the end of the hook plate 43 away from the hook tip, and a spring sheet 46 is arranged below the end of the hook plate 43 away from the hook tip. The two sides of the sheet 46 are fixedly connected to the two sides of the hanger 44, and a guide cylinder 47 is provided on the side of the hook plate 43 away from the spring sheet 46 and is fixedly provided on the hanger 44, one end of the guide cylinder 47 is connected to a constraint cylinder 25, and a push rod 48 is slidably provided inside the guide cylinder 47, one end of the push rod 48 penetrates the constraint cylinder 25 and extends outward to be fixedly connected to the impact plate 49, a constraint block 50 is slidably provided inside the constraint cylinder 25, and the constraint block 50 is fixedly sleeved on the push rod 48, one end of the push rod 48 away from the impact plate 49 penetrates the guide cylinder 47 and extends outward to contact the hook plate 43, and an impact rod 51 is fixedly provided on the side of the impact plate 49 away from the push rod 48 and located on the side of the arc ratchet 29.

[0051] When using the renal puncture biopsy gun: first, the first and second shells are opened and separated by the fixing assembly, and then the puncture biopsy needle 5 to be used is inserted into the sleeve 7 to realize the insertion connection between the puncture biopsy needle 5 and the sleeve 7, and then the puncture biopsy needle 5 and the sleeve 7 after the sleeve connection are completed are placed in the first shell 1, and the connecting rod 8 at the end of the puncture biopsy needle 5 and the sleeve 7 is respectively inserted into the first card slot 28 on the side of the first connecting block 27 in the first ejection assembly and the second ejection assembly. The second card slot 41 on the side of the second connecting block 40 can be realized at this time. The connection between the puncture biopsy needle 5 and the sleeve 7 and the first ejection assembly and the second ejection assembly can be realized. When the puncture biopsy needle 5 and the sleeve 7 are placed in the first shell 1, the guide block 9 on the side wall of the end thereof is slidably placed in the guide groove 4 on the inner wall, which can realize the sliding stability of the puncture biopsy needle 5 and the sleeve 7 when they are ejected.

[0052] After the placement of the puncture biopsy needle 5 and the sleeve 7 with the first and second ejection assemblies is completed, the second shell 2 is clamped on one side of the first shell 1, and the guide block 9 at the end of the puncture biopsy needle 5 and the sleeve 7 is slidably set in the guide groove 4 to achieve the stability of the sliding placement of the puncture biopsy needle 5 and the sleeve 7 in the first and second shells, and the semicircular grooves 3 at the ends of the first and second shells are spliced ​​into round holes, so that the sleeve 7 extends to the outside of the first and second shells. After the clamping between the first and second shells is completed, the first and second shells are fixedly connected by the fixing assembly to achieve the installation and fixation between the first and second shells, which increases the convenience of installation and disassembly between the first and second shells, and at the same time facilitates the installation, disassembly and replacement of the puncture biopsy needle 5 and the sleeve 7, and facilitates the maintenance of the first and second ejection assemblies inside the first and second shells.

[0053] After the puncture biopsy needle 5 and the sleeve 7 are placed inside the first and second shells, the user first pushes the first push block 26 in the first slide groove 10, and pushes the first push block 26 to the side close to the stop tooth 30. When the first push block 26 is pushed, it can synchronously drive the movement of the first connecting block 27. At this time, the arc-shaped ratchet 29 fixedly installed on one side of the first connecting block 27 moves synchronously. When the arc-shaped ratchet 29 moves to the position of the stop tooth 30, the arc-shaped ratchet 29 can squeeze the stop tooth 30 to deform it. When the first push block 26 is pushed over by the stop tooth 30, the stop tooth 30 is not squeezed and reset to make a sound. At this time, the user can stop pushing the first pushing block 26 after hearing the sound. At this time, the puncture biopsy needle 5 stuck in the first slot 28 on one side of the first connecting block 27 moves synchronously and then stops moving. One end of the stopped puncture biopsy needle 5 can squeeze the first spring 24 placed inside the first shell 1, so that the first spring 24 is compressed to reserve elastic potential energy, and the puncture biopsy needle 5 is moved upward and stored energy. This operation realizes the convenience of the upward energy storage operation of the puncture biopsy needle 5.

[0054] After the puncture biopsy needle 5 is advanced and stored energy, the second pushing block 39 in the second slide groove 11 is pushed, and the second pushing block 39 moves toward the side close to the hook plate 43. When the second pushing block 39 slides, it can drive the second connecting block 40 to move synchronously, and at this time drive the fixed hook 42 fixedly connected to one side of the second connecting block 40 to move. When the fixed hook 42 moves to the bottom of the hook plate 43, the inclined surface of the fixed hook 42 can squeeze the hook tip at one end of the hook plate 43, so that the hook tip at the end of the hook plate 43 is squeezed and deformed. When the fixed hook 42 passes over the hook tip at the end of the hook plate 43, the hook tip resets and pops out to limit the fixed hook 42. At this time, the fixed hook 42 is limited and fixed, and the pushing of the second pushing block 39 is stopped. Since the connecting rod 8 at one end of the sleeve 7 is installed in the second slot 41 on one side of the second connecting block 40, the sleeve 7 can be driven to move synchronously when the second connecting block 40 moves synchronously. When the sleeve 7 moves, the second spring 38 can be pulled to stretch, so that the second spring 38 stretches and reserves elastic potential energy, thereby realizing the upward energy storage of the sleeve 7.

[0055] After the puncture biopsy needle 5 and the sleeve 7 are both advanced and energized, they are used in conjunction with the B-ultrasound equipment to puncture the sleeve 7 to the puncture site required by the patient, and then the puncture ejection length of the sleeve 7 and the puncture biopsy needle 5 is adjusted according to the required puncture length. When adjusting, first pull the handle 19, and the handle 19 can pull the rotating rod 18 to move, and the rotating rod 18 drives the gear 17 to slide on the tooth plate 16 so that one end of the gear 17 is separated between the inner tooth ring 22. At this time, the gear 17 is not limited by the inner tooth ring 22, and the reset spring 23 is in a compressed state. At this time, the staff rotates the rotating rod 18, and the rotation of the rotating rod 18 can drive the gear 17 to rotate, and the gear The wheel 17 rotates to engage the tooth plate 16, so that the tooth plate 16 moves in the horizontal direction. Since the tooth plate 16 is fixedly installed on the U-shaped rod 14, the movement of the U-shaped rod 14 can be driven, and the sliders 12 at both ends of the U-shaped rod 14 are respectively slidably arranged inside the first and second slide grooves, so as to achieve the distance adjustment between the slider 12 and the first and second pushing blocks. When the first and second pushing blocks slide inside the first and second slide grooves, the slider 12 at this time can limit them, so as to adjust the puncture length of the ejection puncture position of the biopsy needle 5 and the sleeve 7, avoid penetration at the puncture position, and reduce the danger of the puncture operation.

[0056] After the adjustment of the adjustment component is completed, the handle 19 is released, and the reset spring 23 is reset, which can pull the rotating rod 18 and the gear 17 to move to the side close to the inner gear ring 22, so that the gear 17 is engaged with the inner gear ring 22, and the gear 17 can be limited. The stability of the U-shaped rod 14 after adjustment is achieved, and the shaking movement of the U-shaped rod 14 caused by the collision between the first and second push blocks and the slider 12 is avoided, thereby increasing the stability of the placement of the U-shaped rod 14.

[0057] After the distance between the slider 12 and the first and second pushing blocks is adjusted, the push handle 32 in the adjusting groove 33 on one side of the first shell 1 is pushed. The push handle 32 can drive the fixed block 31 on one side to slide inside the adjusting groove 33, and drive the elastic strips 34 on both sides to move. When the fixed block 31 moves upward, the elastic strip 34 moves upward. At this time, the elastic strip 34 drives the card block 35 to move in the buckle groove 37 inside the guide rail 36, and squeezes the elastic strip 34 to achieve the movement of the elastic strip 34 in the guide rail 36. When the fixed block 31 moves upward, it drives the stop tooth 30 at one end to move upward, so that the stop tooth 30 is separated from the arc ratchet tooth 29. When the arc ratchet tooth 29 is not limited by the stop tooth 30, the first spring 24 extends out to release the elastic potential energy, and pushes the puncture biopsy needle 5 to pop out. After the puncture biopsy needle 5 pops out, the end with the cutting groove 6 at one end extends out of the sleeve 7 and punctures into the tissue to be sampled, so that the tissue enters the sampling cutting groove 6.

[0058] After the puncture biopsy needle 5 is ejected, the impact rod 51 on one side of its arc-shaped ratchet 29 impacts the push rod 48. After the impact, the push rod 48 slides inside the constraint tube 25 and the guide tube 47, and drives one end of the push rod 48 to push the hook plate 43, so that the hook plate 43 rotates around the shaft rod 45. When the shaft rod 45 rotates, the hook tip at one end of the hook plate 43 can be lifted and the other end can squeeze the spring piece 46. At this time, the hook tip of the hook plate 43 is separated from the fixed hook 42. After the fixed hook 42 loses its limit, the second spring 38 contracts to release elastic potential energy, pulling the sleeve 7 to extend to the outside of the first and second shells, and one end of it punctures into the tissue, and the end covers the cutting groove 6. When the sleeve 7 is ejected, the arc-shaped cutter 52 inside the sleeve 7 can cut the tissue in the cutting groove 6 to avoid adhesion between the tissue in the cutting groove 6 and the overall tissue of the puncture site, which makes it difficult to remove the tissue sample. At this time, sampling after puncture can be achieved.

[0059] At the same time, when the puncture biopsy needle 5 and the sleeve 7 are ejected, the first and second pushing blocks successively create collision limits with the slider 12 to avoid the puncture biopsy needle 5 and the sleeve 7 from being too long at the ejection point to cause penetration and air suction, thereby reducing the risk of puncture bleeding. By adjusting the distance between the slider 12 and the first and second pushing blocks, the distance between the puncture biopsy needle 5 and the sleeve 7 can be adjusted and controlled, which can effectively improve the safety of puncture sampling, while reducing the operating difficulty of medical staff, and improving the convenience and accuracy of medical staff in performing renal biopsy puncture on patients.

[0060] The present invention also provides a renal puncture biopsy gun that avoids empty suction and a method for using the same, the specific steps of which are as follows:

[0061] S1. First, the first shell 1 and the second shell 2 are disassembled by the fixing assembly, and then the puncture biopsy needle 5 is inserted into the sleeve 7. After the puncture biopsy needle 5 and the sleeve 7 are placed between them, the connecting rods 8 at the ends of the two are respectively clamped in the first clamping groove 28 on the side of the first connecting block 27 and the second clamping groove 41 on the side of the second connecting block 40, so that the puncture biopsy needle 5 and the sleeve 7 are installed in the first shell. Finally, the first shell 1 and the second shell 2 are clamped and fixed by the fixing assembly. One end of the sleeve 7 after installation extends outward through the semicircular groove 3 provided at the ends of the first shell 1 and the second shell 2, and the ends of the puncture biopsy needle 5 and the sleeve 7 are respectively connected to the first ejection assembly and the second ejection assembly;

[0062] S2, after the puncture biopsy needle 5 and the sleeve 7 are connected to the first ejection assembly and the second ejection assembly respectively, when it is necessary to perform a puncture biopsy on the patient, first push the first push block 26, so that the end of the puncture biopsy needle 5 squeezes the first spring 24 to store energy, and when the first push block 26 moves to one side of the stop tooth 30, the arc-shaped ratchet squeezes the stop tooth 30 to deform and pass over the stop tooth 30, and then the push of the first push block 26 can be stopped, so that the puncture biopsy needle 5 can be stored upward;

[0063] S3, after the puncture biopsy needle 5 moves upward and stores energy, the second push block 39 is pushed again to drive the sleeve 7 to move, and the second spring 38 on the outer side of the sleeve 7 is pulled to move, so that the second spring 38 is stretched and stores energy. When the second push block 39 drives the fixed hook 42 to pass over the hook tip at one end of the hook plate 43, the spring piece 46 pushes the hook plate 43 downward, so that the hook tip of the hook plate 43 stops the fixed hook 42. At this time, the second push block 39 is stopped to realize the upward energy storage of the sleeve 7.

[0064] S4, after the puncture biopsy needle 5 and the cannula 7 are both advanced and energized, the puncture biopsy needle 5 is now stored inside the cannula 7, and then the cannula 7 is punctured into the puncture site of the patient, and the puncture position of the cannula 7 is observed with the help of the B-ultrasound device, and the puncture position of the cannula 7 is positioned and adjusted;

[0065] S5. After the cannula 7 is punctured and positioned, the ejection distance of the puncture biopsy needle is adjusted according to the puncture length required by the puncture position. During the adjustment, the slider 12 inside the first slide groove 10 and the second slide groove 11 is adjusted by the adjustment component to adjust the distance between the slider 12 and the first push block 26 and the second push block 39. At this time, the ejection distance of the puncture biopsy needle 5 and the cannula 7 can be adjusted;

[0066] S6. After the ejection distance is adjusted, the push handle 32 at the end of the first housing 1 is pushed, so that the fixed block 31 drives the elastic strips 34 on both sides below to slide inside the guide rail 36, so that the clamping block 35 on the side wall of the end of the elastic strip 34 moves in the buckle groove 37. At this time, the fixed block 31 drives the stop tooth 30 to move upward, so that the stop tooth 30 is separated from the arc-shaped ratchet 29, so that the first ejection assembly is triggered to eject. At this time, the first spring 24 releases the elastic potential energy to push the puncture biopsy needle 5 to extend so that the end with the cutting groove 6 at the end thereof is inserted into the tissue to take tissue samples;

[0067] S7, after the first ejection assembly is triggered to eject, the second ejection assembly can be pushed to trigger the ejection through the impact rod 51, so that the second spring 38 releases the elastic potential energy, pushing the sleeve 7 to extend and puncture into the punctured tissue. At this time, the arc-shaped cutter 52 inside the sleeve 7 can cut the sampled tissue in the cutting groove 6, so that the cut tissue stays in the cutting groove 6, and the sleeve 7 can cover the puncture biopsy needle 5, thereby improving the safety of the sampled tissue stored in the cutting groove 6;

[0068] S8, after puncture sampling, the cannula 7 is pulled out from the puncture site of the patient, and the second push block 39 is pushed to move, and the action S3 is repeated to put the cannula 7 in the upward energy storage state again. At this time, the cutting groove 6 at the end of the puncture biopsy needle 5 in the cannula 7 can be exposed, and then the sampled tissue in the cutting groove 6 can be taken out. At this time, the process of puncture biopsy tissue sampling can be completed.

[0069] Example 2

[0070] See also Figure 1-Figure 15The present embodiment further illustrates Example 1. In the figure, the first shell 1, the second shell 2, the puncture biopsy needle 5, the sleeve 7, the first ejection assembly, the second ejection assembly, the adjustment assembly and the fixing assembly are symmetrically provided with semicircular grooves 3 on one end side walls of the first shell 1 and the second shell 2, and the first shell 1 and the second shell 2 are provided with guide grooves 4 inside. A cutting groove 6 for sampling kidney tissue is provided on one end side wall of the puncture biopsy needle 5; the sleeve 7 is sleeved on the outside of the puncture biopsy needle 5, and an arc-shaped cutter 52 is fixed on the inner wall of the sleeve 7, and the arc-shaped cutter 52 is located on one side of the end of the cutting groove 6. One end of the sleeve 7 passes through the semicircular groove 3 and extends to the outside of the first shell 1 and the second shell 2. One end of the puncture biopsy needle 5 and the sleeve 7 A connecting rod 8 is fixedly sleeved on the outer side of one end of each housing 1, and guide blocks 9 slidably connected to the guide groove 4 are fixedly provided on both sides of the connecting rod 8; the first ejection assembly is installed on one side of the end of the puncture biopsy needle 5, and the puncture biopsy needle 5 is loaded and triggered to eject so that it punctures the kidney puncture position; the second ejection assembly is installed on one side of the end of the sleeve 7, and after the sleeve 7 is loaded and the puncture biopsy needle 5 is launched by the first ejection assembly, the second ejection assembly is triggered to eject the sleeve 7 to cover and shield the tissue sampled in the cutting groove 6 at the end of the puncture biopsy needle 5; the adjustment assembly is installed inside the first housing 1 to adjust the ejection puncture distance of the puncture biopsy needle 5 and the sleeve 7; the fixing assembly is installed on one side of the second housing 2, and is fixed between the first housing 1 and the second housing 2;

[0071] See also Figure 1 , Fig.13 and Fig.15 The fixing assembly shown in the figure includes a through hole 53 opened on the second housing 2, a screw barrel 54 aligned with the through hole 53 is fixedly provided on the inner wall of the first housing 1, and a locking screw 55 matching the screw barrel 54 is inserted into the through hole 53;

[0072] See also Figure 2 , a scale 56 is fixedly provided on one side of the first slide groove 10 and the second slide groove 11 and on the outer side wall of the first shell 1 as shown in the figure.

[0073] In this embodiment, by connecting the first and second shells through a fixing component, the first and second shells can be fixed, and the first and second shells can be disassembled and separated, which is convenient for replacing and repairing the first and second elastic components inside the first shell 1. When in use, the locking screw 55 in the through hole 53 on the second shell 2 is unscrewed to achieve disassembly between the first and second shells, and then the through hole 53 and the screw barrel 54 are aligned and the locking screw 55 is inserted into the through hole 53 and screwed between the screw barrel 54 to achieve fixed installation between the first and second shells, which can effectively improve the convenience of installation between the first and second shells; a scale 56 is fixedly provided on the outer side wall of the first and second slide grooves, and the pointer 13 on one side of the slider 12 can point to the scale 56 when the slider 12 slides, which is convenient for medical staff to observe the scale 56, and can intuitively observe the distance between the slider 12 and the first and second push blocks, which is convenient for medical staff to operate, observe and use.

[0074] Example 3

[0075] See also Figure 1-Figure 15 , this embodiment further illustrates other embodiments, the first shell 1, the second shell 2, the puncture biopsy needle 5, the sleeve 7, the first ejection assembly, the second ejection assembly, the adjustment assembly and the fixing assembly in the figure, the side walls of one end of the first shell 1 and the second shell 2 are symmetrically provided with semicircular grooves 3, the interiors of the first shell 1 and the second shell 2 are provided with guide grooves 4, and the side wall of one end of the puncture biopsy needle 5 is provided with a cutting groove 6 for sampling kidney tissue; the sleeve 7 is sleeved on the outside of the puncture biopsy needle 5, and an arc-shaped cutter 52 is fixed on the inner wall of the sleeve 7, and the arc-shaped cutter 52 is located on one side of the end of the cutting groove 6, one end of the sleeve 7 passes through the semicircular groove 3 and extends to the outside of the first shell 1 and the second shell 2, one end of the puncture biopsy needle 5 and the sleeve 7 A connecting rod 8 is fixedly sleeved on the outer side of one end, and a guide block 9 slidably connected to the guide groove 4 is fixedly provided on both sides of the connecting rod 8; the first ejection component is installed on one side of the end of the puncture biopsy needle 5, and the puncture biopsy needle 5 is loaded and triggered to eject so that it punctures the kidney puncture position; the second ejection component is installed on one side of the end of the sleeve 7, and after the sleeve 7 is loaded and the puncture biopsy needle 5 is launched by the first ejection component, the second ejection component is triggered to eject the sleeve 7 to cover and shield the sampled tissue in the cutting groove 6 at the end of the puncture biopsy needle 5; the adjustment component is installed inside the first shell 1 to adjust the ejection puncture distance of the puncture biopsy needle 5 and the sleeve 7; the fixing component is installed on one side of the second shell 2, and is fixed between the first shell 1 and the second shell 2.

[0076] See also Figure 2 , Figure 4-Figure 8 , a non-slip handle 57 is fixedly provided on one side of the first push block 26 and the second push block 39 shown in the figure;

[0077] See also Fig.12 The U-shaped block 21 shown in the figure has limit grooves 58 on both sides of the inner wall. A limit strip 59 is slidably provided inside the limit groove 58 , and one side of the limit strip 59 is fixedly connected to the side wall of the U-shaped rod 14 .

[0078] In this embodiment, by fixing an anti-slip handle 57 on one side of the first and second pushing blocks, the medical staff can increase the friction between the fingers when pushing the first and second pushing blocks, thereby increasing the stability of pressing and pushing the first and second pushing blocks; limiting grooves 58 are provided on the inner walls at both ends of the U-shaped block 21, and a limiting strip 59 is provided for sliding inside the limiting groove 58, and one end of the limiting strip 59 is fixedly connected to the side wall of the U-shaped rod 14, which can increase the sliding stability of the U-shaped rod 14 when the U-shaped rod 14 slides horizontally, thereby improving the safety of the movement of the U-shaped rod 14.

[0079] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A renal puncture biopsy gun for avoiding empty suction, characterized in that: include: A first shell (1) and a second shell (2), wherein the side walls of one end of the first shell (1) and the second shell (2) are both symmetrically provided with semicircular grooves (3), and the interiors of the first shell (1) and the second shell (2) are both provided with guide grooves (4); A puncture biopsy needle (5), wherein a side wall at one end of the puncture biopsy needle (5) is provided with a cutting groove (6) for sampling kidney tissue; a sleeve (7), the sleeve (7) being sleeved on the outside of the puncture biopsy needle (5), and having an arc-shaped cutter (52) fixedly provided on the inner wall of the sleeve (7), the arc-shaped cutter (52) being located on one side of the end of the cutting groove (6), one end of the sleeve (7) passing through the semicircular groove (3) and extending toward the outside of the first shell (1) and the second shell (2), one end of the puncture biopsy needle (5) and one end of the sleeve (7) being fixedly sleeved on the outside of both ends of the sleeve (7), and guide blocks (9) slidably connected to the guide groove (4) being fixedly provided on both sides of the connecting rod (8); A first ejection assembly is mounted on one side of the end of the puncture biopsy needle (5), and triggers the ejection of the puncture biopsy needle (5) so that the needle punctures the kidney; A second ejection assembly is mounted on one side of the end of the sleeve (7). After the sleeve (7) is loaded and the puncture biopsy needle (5) is launched by the first ejection assembly, the second ejection assembly is triggered to eject the sleeve (7) to cover and shield the tissue sampled in the cutting groove (6) at the end of the puncture biopsy needle (5); An adjustment component, installed inside the first housing (1) to adjust the ejection and puncture distance of the puncture biopsy needle (5) and the sleeve (7); A fixing assembly, mounted on one side of the second shell (2), for fixing the first shell (1) and the second shell (2); The adjustment component comprises a first slide groove (10) formed on the first housing (1), a second slide groove (11) being arranged parallel to and above one end of the first slide groove (10), and a sliding block (12) being slidably arranged inside the first slide groove (10) and the second slide groove (11); The first ejection assembly comprises a first pushing block (26) slidably arranged inside the first sliding groove (10); The second ejection assembly comprises a second pushing block (39) slidably arranged inside the second sliding groove (11).

2. A renal puncture biopsy gun for avoiding empty suction according to claim 1, characterized in that: One end of the slider (12) passes through the first slide groove (10) and the second slide groove (11), extends to the outside of the first housing (1), and is fixedly connected to the pointer (13); one end of the slider (12) away from the pointer (13) extends to the inside of the first housing (1), and is fixedly connected to two ends of a U-shaped rod (14); a mounting groove (15) is provided on the U-shaped rod (14); a toothed plate (16) is fixedly provided on one side of the mounting groove (15); a gear (17) is meshed with one side of the toothed plate (16); a rotating rod (18) is fixedly provided in the middle of the gear (17); one end of the rotating rod (18) is The rotating rod (18) is provided with a stop block (20) at one end away from the handle (19), a U-shaped block (21) is fixedly provided on the inner wall of the first housing (1), an inner gear ring (22) meshing with the gear (17) is fixedly provided in the middle of the inner wall of the U-shaped block (21), one end of the rotating rod (18) is provided with the stop block (20) and one end of the rotating rod (18) is provided with the stop block (21) and extends to the other side thereof and is fixedly connected to the stop block (20), and a return spring (23) is provided between the U-shaped block (21) and the stop block (20) and on the rotating rod (18).

3. A renal puncture biopsy gun for avoiding empty suction according to claim 2, characterized in that: The first ejection assembly comprises a first spring (24), one end of the first spring (24) being fixedly connected to the inner wall of the first housing (1), and the other end of the first spring (24) being in contact with one end of the puncture biopsy needle (5); A first connecting block (27) is fixedly provided on one side of the first pushing block (26); a first slot (28) matching the connecting rod (8) is provided on one side of the first connecting block (27); an arc-shaped ratchet (29) is fixedly provided on one side of the upper side of the first pushing block (26); a stop tooth (30) is meshed with one side of the arc-shaped ratchet (29); one end of the stop tooth (30) is fixedly connected to one end of a fixing block (31); a push handle (32) is fixedly provided on one end of the fixing block (31) away from the stop tooth (30); an adjustment handle (32) is provided on one side of the stop tooth (30) and located on the first housing (1). The fixing block (31) is slidably arranged inside the adjusting groove (33), and one end of the fixing block (31) extends to the outside of the adjusting groove (33) and is fixedly connected to the push handle (32). Both sides of the end of the fixing block (31) are fixedly provided with elastic strips (34), and a clamping block (35) is fixedly provided on the side wall of one end of the elastic strip (34) away from the fixing block (31). A guide rail (36) is fixedly provided on one side of the elastic strip (34) and located on the inner wall of the first shell (1), and buckle grooves (37) matching the clamping block (35) are equidistantly provided on the inner wall of the guide rail (36).

4. A renal puncture biopsy gun for avoiding empty suction according to claim 3, characterized in that: The second ejection assembly comprises a second spring (38) which is sleeved on the sleeve (7), and the second spring (38) is arranged inside the first housing (1); A second connecting block (40) is fixedly provided on one side of the second pushing block (39), a second slot (41) matching the connecting rod (8) is provided on one side of the second connecting block (40), a fixed hook (42) is fixedly provided on the upper side of the second pushing block (39), a hook plate (43) matching the connecting rod (8) is provided on the upper side of the fixed hook (42), one end of the hook plate (43) is provided with a hook tip, one side of the hook plate (43) is provided with a hanger (44), the hanger (44) is fixedly connected to the inner wall of the first shell (1), two sides of the hook plate (43) are rotatably connected to the hanger (44) via a shaft (45), a spring sheet (46) is provided below the end of the hook plate (43) away from the hook tip, two sides of the spring sheet (46) are fixedly connected to two sides of the hanger (44), the A guide cylinder (47) is provided on a side of the hook plate (43) away from the spring sheet (46) and is fixedly provided on the hanger (44); one end of the guide cylinder (47) is connected to a constraint cylinder (25); a push rod (48) is slidably provided inside the guide cylinder (47); one end of the push rod (48) penetrates the constraint cylinder (25) and extends outwardly to be fixedly connected to the impact plate (49); a constraint block (50) is slidably provided inside the constraint cylinder (25); the constraint block (50) is fixedly sleeved on the push rod (48); one end of the push rod (48) away from the impact plate (49) penetrates the guide cylinder (47) and extends outwardly to contact the hook plate (43); and a strike rod (51) is fixedly provided on a side of the impact plate (49) away from the push rod (48) and located on a side of the arc-shaped ratchet (29).

5. A renal puncture biopsy gun for avoiding empty suction according to claim 1, characterized in that: The fixing assembly comprises a through hole (53) formed on the second shell (2); a screw barrel (54) aligned with the through hole (53) is fixedly provided on the inner wall of the first shell (1); and a locking screw (55) matching the screw barrel (54) is inserted into the interior of the through hole (53).

6. A renal puncture biopsy gun for avoiding empty suction according to claim 2, characterized in that: A scale (56) is fixedly provided on one side of the first slide groove (10) and the second slide groove (11) and on the outer side wall of the first shell (1).

7. A renal puncture biopsy gun for avoiding empty suction according to claim 4, characterized in that: An anti-slip handle (57) is fixedly provided on one side of each of the first pushing block (26) and the second pushing block (39).

8. A renal puncture biopsy gun for avoiding empty suction according to claim 3, characterized in that: The elastic strip (34) is made of an elastic material.

9. A renal puncture biopsy gun for avoiding empty suction according to claim 2, characterized in that: Limiting grooves (58) are provided on both sides of the inner wall of the U-shaped block (21), and a limiting strip (59) is slidably provided inside the limiting groove (58), and one side of the limiting strip (59) is fixedly connected to the side wall of the U-shaped rod (14).

Images