Kidney puncture equipment for living body examination

Abstract

The invention belongs to the technical field of kidney puncture, and particularly relates to kidney puncture equipment for living body examination, which comprises a crank assembly, a connecting rod assembly, a variable precision driving assembly, a lifting puncture assembly, a sampling pump, a double-shaft platform and a sliding plate, the sliding plate is arranged on the double-shaft platform, and the crank assembly and the variable precision driving assembly are arranged on the sliding plate. The connecting rod assembly is arranged between the crank assembly and the variable-precision driving assembly, the lifting puncture assembly is arranged in the middle of the sliding plate, and the sampling pump is arranged on the lifting puncture assembly. Under the condition that the precision and the speed of the driving motor are not changed, at the initial stage of descending of the hollow pipe, the relatively high puncture speed is obtained in a precision sacrificing mode, and at the tail stage of descending of the hollow pipe, the relatively high position control precision is obtained in a speed sacrificing mode.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kidney puncture, and particularly relates to a kidney puncture device for in-vivo examination. BACKGROUND

[0002] Percutaneous renal biopsy is a key means for diagnosing kidney diseases. The existing kidney puncture device is mostly a spring-driven puncture gun, which drives the puncture needle to quickly penetrate into the kidney for sampling after the spring is compressed and instantaneously released. However, such a device has the following inherent defects: A: The initial puncture speed is too high, and when a kidney capsule with high toughness is encountered, the tissue is prone to slipping instead of being cut, resulting in that the actual puncture depth is less than the preset value or sampling fails.

[0003] B: The puncture depth precision is not high.

[0004] In the traditional puncture driving mode, the faster the puncture speed is, the easier the skin is punctured, and the lower the patient's pain and psychological pressure are, but the control precision is inevitably lower. Speed and precision are a pair of contradictory technical parameters. SUMMARY

[0005] In view of the above problems, the kidney puncture device for in-vivo examination is provided to overcome the defects of the prior art. The variable-precision driving assembly and the lifting puncture assembly are driven through the structure of the crank slider. In the case that the driving motor precision and speed are unchanged, in the initial stage of the hollow tube descending, the puncture speed is relatively fast by sacrificing the precision, and in the final stage of the hollow tube descending, the position control precision is relatively high by sacrificing the speed. In addition, the reset spring can not only solve the mechanical play problem that cannot be avoided when the gears are matched, but also can cooperate with the sliding resistance between the guide sleeve and the hollow tube to realize slow and automatic lifting of the hollow tube in the case of accidental power failure, so as to reduce the harm caused by such a fault to the human body.

[0006] The technical scheme adopted by the application is as follows: The application provides a kidney puncture device for in-vivo examination, which comprises a crank assembly, a connecting rod assembly, a variable-precision driving assembly, a lifting puncture assembly, a sampling pump, a double-shaft platform and a sliding plate. The sliding plate is arranged on the double-shaft platform, the crank assembly and the variable-precision driving assembly are arranged on the sliding plate, the connecting rod assembly is arranged between the crank assembly and the variable-precision driving assembly, the lifting puncture assembly is arranged at the middle position of the sliding plate, and the sampling pump is arranged on the lifting puncture assembly.

[0007] The variable-precision driving assembly and the lifting puncture assembly are driven through the structure of the crank slider. By using the transmission form with the characteristics of changing speed and precision, the technical purpose of fast puncture in the initial stage and slow and high-precision adjustment in the final stage is achieved.

[0008] Further, the crank assembly comprises a rotating bracket and a sector gear, the rotating bracket is arranged on the slide plate, the sector gear is provided with a center ring, the sector gear is arranged on the rotating bracket through the center ring, and the sector gear is provided with an eccentric pin shaft.

[0009] Since the sector gear only rotates within a certain angle range, the sector gear can be designed as a sector to reduce the volume, weight and inertia.

[0010] Further, the lifting and puncturing assembly comprises a guide sleeve, a hollow tube, a puncturing tube and a return spring, the guide sleeve is fixedly connected in the center hole of the slide plate, the hollow tube is slidingly arranged in the guide sleeve, the puncturing tube is arranged at the bottom of the hollow tube, and the sampling pump is arranged at the top of the hollow tube.

[0011] The sampling pump can generate negative pressure in the hollow tube and the puncturing tube, so that sampling of the target position can be realized after puncturing.

[0012] Further, the connecting rod assembly comprises a reciprocating ring, the reciprocating ring is fixedly connected to the outside of the hollow tube, and the return spring is arranged between the reciprocating ring and the slide plate.

[0013] The return spring not only solves the mechanical play problem that cannot be avoided when the gears are matched, but also matches the sliding resistance between the guide sleeve and the hollow tube, so that the hollow tube can slowly and automatically rise in the event of accidental power failure, thereby reducing the harm caused to the human body by such failure.

[0014] Further, the connecting rod assembly further comprises a connecting rod body, the reciprocating ring is provided with a hinged pin shaft, and the two ends of the connecting rod body are hingedly connected with the hinged pin shaft and the eccentric pin shaft.

[0015] Further, the variable-precision driving assembly comprises a driving motor and a driving gear, the driving motor is arranged on the slide plate, the driving gear is arranged on the output shaft of the driving motor, and the driving gear and the sector gear are in meshing transmission.

[0016] The driving motor rotates and drives the sector gear, in the case that the precision and speed of the driving motor are unchanged, in the initial stage of the descent of the hollow tube, a relatively fast puncturing speed is obtained by sacrificing the precision, and in the final stage of the descent of the hollow tube, a relatively high position control precision is obtained by sacrificing the speed.

[0017] Further, the double-shaft platform comprises a frame support, a Y-axis assembly and an X-axis assembly, the Y-axis assembly is arranged on the frame support, the X-axis assembly is arranged on the Y-axis assembly, and the frame support is arrayed with supporting legs.

[0018] As preferably, the Y-axis assembly comprises a Y-axis guide rail, a Y-axis slider and a sliding crossbeam, the Y-axis guide rail is arranged on the frame support, the Y-axis slider is arranged on the Y-axis guide rail in a clamping and sliding mode, and the sliding crossbeam is arranged on the Y-axis slider, the sliding crossbeam is provided with a strip-shaped groove, and the hollow tube and the puncture tube are located in the strip-shaped groove.

[0019] As preferably, the X-axis assembly comprises an X-axis guide rail and an X-axis slider, the X-axis guide rail is arranged on the sliding crossbeam, and the X-axis slider is arranged on the X-axis guide rail in a clamping and sliding mode, and the sliding plate is arranged on the X-axis slider.

[0020] The application has the following beneficial effects by adopting the above structure: (1) The variable-precision driving assembly and the lifting puncture assembly are driven through the structure of the crank slider, the transmission form is used to change the speed and precision, and the technical purpose of fast puncture in the initial stage and slow and high-precision adjustment in the end stage is realized.

[0021] (2) Since the sector gear only rotates within a certain angle range, the sector gear can be designed as a sector to reduce the volume, weight and inertia.

[0022] (3) The hollow tube and the puncture tube can generate negative pressure through the sampling pump, so that sampling of the target position can be realized after puncture.

[0023] (4) The reset spring can not only solve the mechanical play problem that cannot be avoided when the gears are matched, but also can cooperate with the sliding resistance between the guide sleeve and the hollow tube to realize slow and automatic rising of the hollow tube in the case of accidental power failure, so as to reduce the harm to the human body caused by such failure.

[0024] (5) The driving motor rotates the sector gear, and in the case that the precision and speed of the driving motor are unchanged, in the initial stage of the hollow tube descending, the precision is sacrificed to obtain relatively fast puncture speed, and in the end stage of the hollow tube descending, the speed is sacrificed to obtain relatively high position control precision. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of a kidney puncture device for living body examination proposed by the application; Figure 2 It is a front view of a kidney puncture device for living body examination proposed by the application; Figure 3 It is a top view of a kidney puncture device for living body examination proposed by the application; Figure 4 It is Figure 2 It is a sectional view along the cutting line A-A; Figure 5 It isFigure 4 A close-up view of the portion I; Figure 6 For Figure 1 A close-up view of the portion II.

[0026] Wherein, 1, crank assembly, 2, connecting rod assembly, 3, variable precision driving assembly, 4, lifting puncture assembly, 5, sampling pump, 6, double shaft platform, 7, sliding plate, 11, rotating support, 12, sector gear, 21, connecting rod body, 22, reciprocating ring, 31, driving motor, 32, driving gear, 41, guide sleeve, 42, hollow tube, 43, puncture tube, 44, reset spring, 61, frame support, 62, Y-axis assembly, 63, X-axis assembly, 121, center ring, 122, eccentric pin shaft, 221, hinged pin shaft, 611, leg, 621, Y-axis guide rail, 622, Y-axis sliding block, 623, sliding crossbeam, 631, X-axis guide rail, 632, X-axis sliding block, 6231, strip-shaped groove.

[0027] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] As Figures 1-6 shown, the present application proposes a kidney puncture device for live examination, comprising a crank assembly 1, a connecting rod assembly 2, a variable precision driving assembly 3, a lifting puncture assembly 4, a sampling pump 5, a double shaft platform 6 and a sliding plate 7, the sliding plate 7 is arranged on the double shaft platform 6, the crank assembly 1 and the variable precision driving assembly 3 are arranged on the sliding plate 7, the connecting rod assembly 2 is arranged between the crank assembly 1 and the variable precision driving assembly 3, the lifting puncture assembly 4 is arranged at the middle position of the sliding plate 7, and the sampling pump 5 is arranged on the lifting puncture assembly 4.

[0031] The variable-precision driving assembly 3 and the lifting puncture assembly 4 are driven through the structure of a crank slider. By using the transmission form with the characteristics of variable speed and precision, the technical purpose of fast puncture in the initial stage and slow high-precision adjustment in the end stage is achieved.

[0032] The crank assembly 1 comprises a rotating support 11 and a sector gear 12. The rotating support 11 is arranged on the slide plate 7, the sector gear 12 is provided with a center ring 121, the sector gear 12 is rotatably arranged on the rotating support 11 through the center ring 121, and the sector gear 12 is provided with an eccentric pin shaft 122.

[0033] Since the sector gear 12 only rotates within a certain angle range, the sector gear 12 can be designed as a sector to reduce its volume, weight and inertia.

[0034] The lifting puncture assembly 4 comprises a guide sleeve 41, a hollow tube 42, a puncture tube 43 and a return spring 44. The guide sleeve 41 is fixedly connected to the center hole of the slide plate 7, the hollow tube 42 is slidably arranged in the guide sleeve 41, the puncture tube 43 is arranged at the bottom of the hollow tube 42, and the sampling pump 5 is arranged at the top of the hollow tube 42.

[0035] The sampling pump 5 can generate negative pressure in the hollow tube 42 and the puncture tube 43, so that sampling of the target position can be achieved after puncture.

[0036] The connecting rod assembly 2 comprises a reciprocating ring 22, which is fixedly connected to the outside of the hollow tube 42, and the return spring 44 is arranged between the reciprocating ring 22 and the slide plate 7.

[0037] The return spring 44 not only solves the mechanical play problem that cannot be avoided when the gears are matched, but also cooperates with the sliding resistance between the guide sleeve 41 and the hollow tube 42 to realize slow and automatic rising of the hollow tube 42 in case of accidental power failure, thereby reducing the harm to the human body caused by such failure.

[0038] The connecting rod assembly 2 further comprises a connecting rod body 21, the reciprocating ring 22 is provided with a hinged pin shaft 221, and the two ends of the connecting rod body 21 are hinged with the hinged pin shaft 221 and the eccentric pin shaft 122, respectively.

[0039] The variable-precision driving assembly 3 comprises a driving motor 31 and a driving gear 32. The driving motor 31 is arranged on the slide plate 7, the driving gear 32 is arranged on the output shaft of the driving motor 31, and the driving gear 32 and the sector gear 12 are in meshing transmission.

[0040] The driving motor 31 rotates the sector gear 12. In the initial stage of the hollow tube 42 descending, the driving motor 31 sacrifices the precision to obtain a relatively fast puncture speed. In the final stage of the hollow tube 42 descending, the driving motor 31 sacrifices the speed to obtain a relatively high position control precision.

[0041] The double-shaft platform 6 comprises a frame support 61, a Y-axis assembly 62 and an X-axis assembly 63. The Y-axis assembly 62 is arranged on the frame support 61, and the X-axis assembly 63 is arranged on the Y-axis assembly 62. The frame support 61 is provided with a plurality of supporting legs 611.

[0042] The Y-axis assembly 62 comprises a Y-axis guide rail 621, a Y-axis sliding block 622 and a sliding cross beam 623. The Y-axis guide rail 621 is arranged on the frame support 61. The Y-axis sliding block 622 is clamped and slidably arranged on the Y-axis guide rail 621. The sliding cross beam 623 is arranged on the Y-axis sliding block 622. The sliding cross beam 623 is provided with a strip-shaped groove 6231. The hollow tube 42 and the puncture tube 43 are located in the strip-shaped groove 6231.

[0043] The X-axis assembly 63 comprises an X-axis guide rail 631 and an X-axis sliding block 632. The X-axis guide rail 631 is arranged on the sliding cross beam 623. The X-axis sliding block 632 is clamped and slidably arranged on the X-axis guide rail 631. The sliding plate 7 is arranged on the X-axis sliding block 632.

[0044] In specific use, first, the user needs to place the frame support 61 above the puncture position of the patient. Then, the position of the sliding plate 7 is adjusted by manual or electric mode. After the adjustment is completed, the position of the sliding plate 7 is locked. Then, the puncture can be performed.

[0045] During the puncture, the driving motor 31 drives the sector gear 12 to rotate through the meshing transmission between the driving gear 32 and the sector gear 12. When the hollow tube 42 is located at the top, the eccentric pin shaft 122 is located at the same height as the center ring 121. At this time, with the rotation of the sector gear 12, the hollow tube 42 can be pushed down by the reciprocating ring 22 through the reciprocating ring 22, so as to push the puncture tube 43 down, thereby realizing the puncture of the target position. The puncture tube 43 is a disposable tool for convenient disassembly.

[0046] In the initial stage of the hollow tube 42 descending, the driving motor 31 sacrifices the precision to obtain a relatively fast puncture speed. In the final stage of the hollow tube 42 descending, the driving motor 31 sacrifices the speed to obtain a relatively high position control precision.

[0047] After the puncture tube 43 is lowered to the target position, the hollow tube 42 can be in a negative pressure state through the sampling pump 5, so as to suck the tissue or liquid at the target position into the puncture tube 43, thereby completing the sampling.

[0048] After the sampling is completed, the puncture tube 43 is raised and reset by reversing the guide sleeve 41.

[0049] Due to the inevitable gap between the teeth of the sector gear 12 and the driving gear 32 when mechanically matched, the elastic force of the reset spring 44 can always make the hollow tube 42 have a tendency to move upward, avoiding the hollow tube 42 from freely rising and falling independently of the driving motor 31 due to the gap; Moreover, when an accidental power failure occurs, due to the sliding resistance between the guide sleeve 41 and the hollow tube 42, the hollow tube 42 can slowly and automatically rise, thereby reducing the harm caused to the human body by such a failure.

[0050] It is to be noted that the relative terms such as first and second, and the like, are used herein solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] The above describes the present application and its embodiments, which are not limited, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the present application.

Claims

1. A kidney biopsy device for live examination, characterized in that: The assembly includes a crank assembly (1), a connecting rod assembly (2), a variable precision drive assembly (3), a lifting and puncture assembly (4), a sampling pump (5), a dual-axis platform (6), and a slide plate (7). The slide plate (7) is located on the dual-axis platform (6), the crank assembly (1) and the variable precision drive assembly (3) are located on the slide plate (7), the connecting rod assembly (2) is located between the crank assembly (1) and the variable precision drive assembly (3), the lifting and puncture assembly (4) is located in the middle of the slide plate (7), and the sampling pump (5) is located on the lifting and puncture assembly (4).

2. The renal biopsy device for live examination according to claim 1, characterized in that: The crank assembly (1) includes a rotating bracket (11) and a sector gear (12). The rotating bracket (11) is mounted on a slide plate (7). The sector gear (12) is provided with a central ring (121). The sector gear (12) is rotatably mounted on the rotating bracket (11) through the central ring (121). The sector gear (12) is provided with an eccentric pin (122).

3. The renal biopsy device for live examination according to claim 2, characterized in that: The lifting puncture assembly (4) includes a guide sleeve (41), a hollow tube (42), a puncture tube (43), and a return spring (44). The guide sleeve (41) is fixed in the center hole of the slide plate (7). The hollow tube (42) is slidably disposed in the guide sleeve (41). The puncture tube (43) is disposed at the bottom of the hollow tube (42). The sampling pump (5) is disposed at the top of the hollow tube (42).

4. The renal biopsy device for live examination according to claim 3, characterized in that: The connecting rod assembly (2) includes a reciprocating ring (22) which is fixed to the outside of the hollow tube (42), and the return spring (44) is disposed between the reciprocating ring (22) and the slide plate (7).

5. A renal biopsy device for live examination according to claim 4, characterized in that: The connecting rod assembly (2) also includes a connecting rod body (21), and a hinge pin (221) is provided on the reciprocating ring (22). The two ends of the connecting rod body (21) are respectively hinged to the hinge pin (221) and the eccentric pin (122).

6. The renal biopsy device for live examination according to claim 5, characterized in that: The variable precision drive assembly (3) includes a drive motor (31) and a drive gear (32). The drive motor (31) is mounted on the slide plate (7), and the drive gear (32) is mounted on the output shaft of the drive motor (31). The drive gear (32) meshes with the sector gear (12) for transmission.

7. A renal biopsy device for live examination according to claim 6, characterized in that: The dual-axis platform (6) includes a frame bracket (61), a Y-axis assembly (62) and an X-axis assembly (63). The Y-axis assembly (62) is mounted on the frame bracket (61), and the X-axis assembly (63) is mounted on the Y-axis assembly (62). The frame bracket (61) is provided with an array of legs (611).

8. A renal biopsy device for live examination according to claim 7, characterized in that: The Y-axis assembly (62) includes a Y-axis guide rail (621), a Y-axis slider (622), and a sliding beam (623). The Y-axis guide rail (621) is mounted on a frame bracket (61). The Y-axis slider (622) is engaged and slidably mounted on the Y-axis guide rail (621). The sliding beam (623) is mounted on the Y-axis slider (622). The sliding beam (623) has a strip groove (6231). The hollow tube (42) and the puncture tube (43) are located in the strip groove (6231).

9. A renal biopsy device for live examination according to claim 8, characterized in that: The X-axis assembly (63) includes an X-axis guide rail (631) and an X-axis slider (632). The X-axis guide rail (631) is mounted on a sliding beam (623), and the X-axis slider (632) is engaged and slidably mounted on the X-axis guide rail (631). The slide plate (7) is mounted on the X-axis slider (632).

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