A urinary calculus grasping device

Abstract

The present application relates to the technical field of medical auxiliary apparatus, in particular to a urinary calculus grabbing device, which comprises a catheter and a working head, and the calculus is adsorbed through the working head; a main air passage is connected with a negative pressure machine to perform suction and collection work on powder calculus or small calculus; a plurality of suction holes are arranged to jointly act on the calculus in the small space of the lower calices or calyx neck; when the calculus is large and is clamped at the position of the suction hole, the calculus is extruded inward by the negative pressure, the working plate is rotated to make the clamping plate close inward, the connecting chains on both sides are closed by the magnetic pieces arranged at the head end, the fixing members arranged around the suction hole fix and limit the calculus, so that the calculus is prevented from being separated, the suction hole can adsorb small or powder calculus, and the fixing members arranged outside the suction hole can grab and fix large calculus, the cleaning effect of the calculus is ensured, and the probability of calculus recurrence or incarceration is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary devices, in particular to a urinary calculus grabbing device. BACKGROUND

[0002] Urinary calculus refers to the presence of calculus in the urinary system, which includes the kidney, ureter, bladder and urethra. Calculus in any of these parts is collectively referred to as urinary calculus. It can also be referred to as kidney calculus, ureteral calculus, bladder calculus and urethral calculus. Urinary calculus is treated by various methods such as drug stone expulsion, extracorporeal shock wave lithotripsy or surgery, depending on the size of the calculus. Soft mirror lithotripsy surgery is a minimally invasive and precise stone crushing method that is performed through the natural body cavity and is currently one of the main treatments for urinary calculus.

[0003] During soft mirror lithotripsy surgery, the larger urinary calculus is first shattered into smaller stone fragments by laser, and then the stone fragments are grabbed by the stone extraction net basket in the stone extractor and pulled out of the body. In clinical practice, it is not possible to powder all small stones, and some stones located in the lower calyx or small space at the neck of the calyx cannot be effectively cleared even if they are powdered. Moreover, 5mm stones that have not been powdered, and the existing stone extraction net basket can only grab one or a small amount of stone fragments at a time, which needs to be pulled out of the body and then inserted into the body again to grab the remaining stone fragments, which cannot be pulled out of the body at one time, resulting in low stone expulsion efficiency. Therefore, in view of the above-mentioned defects, a urinary calculus grabbing device is designed to overcome the difficulty of grabbing small stones, effectively clear stones in clinical practice, relieve patients' pain, and reduce the probability of stone recurrence or impaction. SUMMARY

[0004] The purpose of the present application is to provide a urinary calculus grabbing device that can grab and adsorb stones of different sizes, effectively fix the stones to prevent them from falling out, adsorb multiple groups of stones at the same time, improve the stone extraction efficiency, facilitate the operation of the staff, and has excellent effectiveness, practicality and safety.

[0005] To achieve the above technical purposes and effects, the present application is realized by the following technical solutions:

[0006] The utility model provides a urinary calculus grabbing device, including catheter and working head, its characterized in be that the working head is inside and outside double-layer capsule structure, the catheter is equipped with main air passage and side air passage, the working head is equipped with multiple groups of the suction hole for grabbing and adsorbing calculus fragment, each group the suction hole is connected with main air passage, the main air passage end is equipped with the connecting head for connecting existing negative pressure machine, the inner layer capsule structure of working head is communicated with the suction hole, the outer layer capsule structure of working head is communicated with side air passage, the side air passage end is equipped with the connecting head for connecting existing inflation assembly, and the outer layer capsule structure wraps the inner layer capsule structure.

[0007] As preferred, each group of the suction hole is located at the top end and the side of the working head, and each group of the suction hole is connected and communicated with the inner layer capsule through the connecting pipe, the inner layer capsule is connected and communicated with the main air passage, and the outer layer capsule is connected and communicated with the side air passage.

[0008] As preferred, the connecting pipe is provided with a bellows structure, the bellows structure is composed of multiple groups of ring pieces connected and folded, each group of the ring piece is provided with multiple groups of connecting pieces, and the connecting pieces are fixedly connected with a connecting film between each group of the connecting pieces, the connecting pieces are made of hard material, and the connecting film is made of elastic material.

[0009] As preferred, multiple groups of fixing members are uniformly arranged outside each group of the suction hole, each group of the fixing member includes a fixing point, a working plate, a clamping plate and a connecting chain, the fixing point is movably connected to the inner side of the suction hole, the working plate is fixedly connected to the inner side of the fixing point, the clamping plate is fixedly connected to the outer side of the fixing point, and the connecting chain is movably connected to the end of the clamping plate.

[0010] As preferred, the position of the fixing point is lower than the height of the top end of the suction hole, each group of the working plate is horizontal to the top end of the suction hole, the head end of the connecting chain is provided with a magnetic piece, and the corresponding positions on both sides of the top end of the suction hole are provided with magnetic pieces.

[0011] As preferred, the clamping plate is arc-shaped and inwardly directed, the clamping plate and the working plate are made of hard material, and the connecting chain is made of flexible material.

[0012] As preferred, the catheter is provided with a control handle, the control handle is provided with a control knob and a control line, the control line is connected with the working head, the connection position of the control line and the working head is provided with a connecting knob, the control knob is connected with the control line through the connecting shaft, the connecting shaft is provided with a ratchet structure, and the control knob is provided with an adjusting knob for controlling the working state of the ratchet structure.

[0013] The utility model has the advantages of:

[0014] The urinary calculus grabbing device can grab and adsorb different size calculi, effectively fixes the calculi to avoid falling out, can adsorb multiple groups of calculi at the same time, improves the calculus removal efficiency, is convenient for the staff to operate and use, and has excellent effectiveness, practicality and safety.

[0015] The working head adsorbs the calculus, the main air passage is connected with the negative pressure machine to perform powder calculus or fine calculus suction and collection work, the multiple suction holes jointly act on the calculus in the small space of the lower calices or calices neck, when the calculus is large and is clamped at the position of the suction hole, the calculus is extruded inward by the negative pressure, the working plate rotates to make the clamping plate close inward, the two side connecting chains close by the magnetic sheet at the head end, the fixing members around the suction hole fix and limit the calculus, the calculus is prevented from falling off, the suction hole can adsorb small or powder calculus and can grab and fix large calculus through the fixing members outside the suction hole, the calculus cleaning effect is ensured, the difficulty in grabbing small calculus is overcome, the calculus is effectively cleaned in clinic, the patient's pain is relieved, and the probability of calculus recurrence or incarceration is reduced.

[0016] When the working head is in the non-working state, the outer layer bag is shriveled, the working head is conveniently deepened, then the existing inflation assembly is connected through the side air passage, the outer layer bag of the working head is blown up, the opening of each group of suction holes is enlarged, the working head is close to the calculus, and the working head can well grab and adsorb the calculus; the connecting pipe in the suction hole is provided with a bellows structure, the bellows structure can be correspondingly unfolded and lengthened when the working head is inflated, the ring piece of the bellows structure can expand and change the diameter of the connecting pipe, the hard connecting piece provided on the ring piece provides strength, the connecting membrane is expanded, the connecting pipe can pass through the calculus with a diameter larger than that of the connecting pipe, and the calculus grabbing effect of the suction hole is ensured.

[0017] Of course, implementing any product of the present application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a whole structure schematic view of the urinary calculus grabbing device.

[0020] Figure 2 It is a shriveled structure schematic view of the working head of the urinary calculus grabbing device.

[0021] Figure 3A top view structural schematic diagram of the working head of the urinary calculus grabbing device according to the embodiment of the present application;

[0022] Figure 4 A sectional view structural schematic diagram of the working head of the urinary calculus grabbing device according to the embodiment of the present application;

[0023] Figure 5 A sectional view structural schematic diagram of the working head of the urinary calculus grabbing device according to the embodiment of the present application when working;

[0024] Figure 6 A structural schematic diagram of the fixing member of the urinary calculus grabbing device according to the embodiment of the present application;

[0025] Figure 7 A structural schematic diagram of the bellows structure of the urinary calculus grabbing device according to the embodiment of the present application;

[0026] Figure 8 A structural schematic diagram of the ring piece of the urinary calculus grabbing device according to the embodiment of the present application;

[0027] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0028] 1, catheter, 2, working head, 101, main air passage, 102, side air passage, 201, inner layer bag, 202, outer layer bag, 203, suction hole, 2031, fixing member, 2032, connecting pipe, 2033, bellows structure, 20311, fixing point, 20312, working plate, 20313, clamping plate, 20314, connecting chain, 20315, magnetic piece, 20331, ring piece, 20332, connecting piece, 20333, connecting film. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely 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 the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment 1

[0031] As Figures 1-8 shown

[0032] The urinary calculus grabbing device comprises a catheter 1 and a working head 2, characterized in that the working head 2 is a double-layer capsule structure, the catheter 1 is provided with a main air channel 101 and a side air channel 102, the working head 2 is provided with a plurality of groups of suction holes 203 for grabbing and adsorbing calculus fragments, each group of the suction holes 203 is connected with the main air channel 101, the main air channel 101 is provided at the tail end with a connecting head for connecting an existing negative pressure machine, the inner layer capsule 201 of the working head 2 is in communication with the suction holes 203, the outer layer capsule 202 of the working head 2 is in communication with the side air channel 102, the side air channel 102 is provided at the tail end with a connecting head for connecting an existing inflation assembly, and the outer layer capsule 202 wraps the inner layer capsule 201.

[0033] In the embodiment, the outer wall of the outer layer capsule 202 is the surface of the working head 2, the space between the inner wall of the outer layer capsule 202 and the outer wall of the inner layer capsule 201 is an air chamber space and is connected with the side air channel 102, the working head 2 can be inflated through the inflation assembly, and the inner wall of the inner layer capsule 201 is the inner wall space of the suction holes 203; each group of the suction holes 203 is located at the top end and the side of the working head 2, each group of the suction holes 203 is connected and communicated with the inner layer capsule 201 through a connecting pipe 2032, the inner layer capsule 201 is connected and communicated with the main air channel 101, and the outer layer capsule 202 is connected and communicated with the side air channel 102.

[0034] It should be understood that the calculus is adsorbed through the working head 2, the main air channel 101 is connected with the negative pressure machine to perform the suction and collection work of powder calculus or small calculus, and the plurality of groups of suction holes 203 jointly act on the calculus in the small space of the lower calyx or calyx neck.

[0035] In the embodiment, the connecting pipe 2032 is provided with a bellows structure 2033, the bellows structure 2033 is composed of a plurality of groups of ring pieces 20331 connected and folded, each group of the ring pieces 20331 is provided with a plurality of groups of connecting pieces 20332, and the connecting pieces 20332 are fixedly connected with a connecting film 20333.

[0036] It should be understood that the bellows structure 2033 can lengthen the length of the connecting pipe 2032, the ring pieces 20331 can expand to change the diameter of the connecting pipe 2032, the hard connecting pieces 20332 of the ring pieces 20331 provide strength, and the connecting film 20333 is expanded, so that the connecting pipe 2032 can pass through the calculus with a diameter greater than the diameter of the connecting pipe 2032, and the calculus grabbing effect of the suction holes 203 is ensured.

[0037] In this embodiment, the outer side of each group of suction holes 203 is uniformly provided with a plurality of groups of fixing members 2031, each group of fixing members 2031 includes a fixed point 20311, a working plate 20312, a clamping plate 20313 and a connecting chain 20314, the fixed point 20311 is movably connected to the inner side of the suction hole 203, the working plate 20312 is fixedly connected to the inner side of the fixed point 20311, the clamping plate 20313 is fixedly connected to the outer side of the fixed point 20311, and the connecting chain 20314 is movably connected to the end of the clamping plate 20313.

[0038] It should be understood that when the stone is large and is clamped in the position of the suction hole 203, the stone is pressed inward by the negative pressure, the working plate 20312 rotates to make the clamping plate 20313 close inward, and the two connecting chains 20314 close through the magnetic sheet 20315 provided at the head end, so that the fixing member 2031 provided around the suction hole 203 fixes and limits the stone, avoids the stone from being separated, and can make the suction hole 203 not only adsorb small or powdered stones, but also grasp and fix large stones through the fixing member 2031 provided on the outer side of the suction hole 203, and when the stone is limited in the suction hole 203, it does not affect the work of other suction holes 203, and can simultaneously grasp a plurality of large stones.

[0039] In this embodiment, the fixed point 20311 is lower than the top end horizontal plane of the suction hole 203, each group of working plates 20312 is horizontal to the top end horizontal plane of the suction hole 203, the head end of the connecting chain 20314 is provided with a magnetic sheet 20315, and the both sides of the top end surface of the suction hole 203 are provided with a magnetic sheet 20315 at the corresponding position.

[0040] It should be understood that the connecting chain 20314 is attached to the top end surface of the suction hole 203 at the same time, the connecting chain 20314 is connected to the head end of the connecting chain 20314, avoids affecting the insertion of the working head 2, makes the top end surface of the suction hole 203 have the highest horizontal height, and the both sides of the suction hole 203 are treated with a round corner and have an arc-shaped structure, so that the working head 2 will not scratch the internal tissue of the kidney, and ensures the safety of the device.

[0041] In this embodiment, the clamping plate 20313 is arc-shaped and inwardly directed, the clamping plate 20313 and the working plate 20312 are made of hard material, and the connecting chain 20314 is made of flexible material.

[0042] It should be understood that the clamping plate 20313 is arc-shaped and inwardly recessed, so that the clamping plate 20313 is more fitted to the approximately spherical calculus, so that the clamping plate 20313 can be well fitted and limited, and at the same time the calculus is moved to the suction hole 203 by the negative pressure suction force, the working plate 20312 is pressed to incline downward, and the clamping plate 20313 is driven to clamp, so as to ensure effective fixation of the calculus.

[0043] Embodiment 2

[0044] The urinary calculus grabbing device provided in the embodiment comprises a catheter 1 and a working head 2, characterized in that the working head 2 is a double-layer capsule structure, the catheter 1 is provided with a main air passage 101 and a side air passage 102, the working head 2 is provided with a plurality of groups of suction holes 203 for grabbing and adsorbing calculus fragments, each group of the suction holes 203 is connected with the main air passage 101, the main air passage 101 is provided at the end with a connecting head for connecting an existing negative pressure machine, the inner layer capsule 201 of the working head 2 is in communication with the suction holes 203, the outer layer capsule 202 of the working head 2 is in communication with the side air passage 102, and the side air passage 102 is provided at the end with a connecting head for connecting an existing inflation assembly, and the outer layer capsule 202 wraps the inner layer capsule 201.

[0045] In the embodiment, the catheter 1 is provided with a control handle, the control handle is provided with a control knob and a control line, the control line is connected with the working head 2, the connection position of the control line and the working head 2 is provided with a connecting knob, the control knob is connected with the control line through a connecting shaft, the connecting shaft is provided with a ratchet structure, and the control knob is provided with an adjusting knob for controlling the working state of the ratchet structure.

[0046] It should be understood that the operator can adjust the bending direction of the working head 2 through the control knob, and when fixation is needed, the working state of the ratchet structure is changed through the adjusting knob, so that the bending direction of the working head 2 is fixed, which is convenient for the operator to operate and use and effectively removes the calculus in the small space of the lower calyx or the calyx neck.

[0047] In summary, the urinary calculus grabbing device can grab and adsorb calculi of different sizes, effectively fix the calculi to avoid falling out, adsorb a plurality of groups of calculi at the same time, improve the stone removal efficiency, is convenient for the operator to operate and use, and has excellent effectiveness, practicality and safety.

[0048] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application and get the best results from the application. The application is only limited by the claims and their full scope and equivalents.

Claims

1. A urinary calculus grasping device comprising a catheter (1) and a working head (2), characterized in that, The working head (2) is a double-layer capsule structure, the catheter (1) is provided with a main air passage (101) and a side air passage (102), the working head (2) is provided with a plurality of groups of suction holes (203) for grabbing and adsorbing stone fragments, each group of the suction holes (203) is connected with the main air passage (101), the main air passage (101) is provided with a connecting head at the end for connecting an existing negative pressure machine, the working head (2) is provided with an inner layer capsule (201) structure in communication with the suction holes (203), the working head (2) is provided with an outer layer capsule (202) structure in communication with the side air passage (102), the side air passage (102) is provided with a connecting head at the end for connecting an existing inflation assembly, and the outer layer capsule (202) structure wraps the inner layer capsule (201) structure. The connecting pipe (2032) is provided with a bellows structure (2033), the bellows structure (2033) is composed of a plurality of groups of ring plates (20331) connected and folded, each group of the ring plates (20331) is provided with a plurality of groups of connecting plates (20332), and the connecting plates (20332) are fixedly connected with a connecting film (20333) between each group of the connecting plates (20332); the connecting plates (20332) are made of hard material, and the connecting film (20333) is made of elastic material. Each group of the suction holes (203) is uniformly provided with a plurality of groups of fixing members (2031) outside, each group of the fixing members (2031) comprises a fixing point (20311), a working plate (20312), a clamping plate (20313) and a connecting chain (20314), the fixing point (20311) is movably connected to the inside of the suction hole (203), the working plate (20312) is fixedly connected to the inside of the fixing point (20311), the clamping plate (20313) is fixedly connected to the outside of the fixing point (20311), and the connecting chain (20314) is movably connected to the end of the clamping plate (20313). The position of the fixing point (20311) is lower than the height of the top end of the suction hole (203), each group of the working plates (20312) is horizontal to the top end of the suction hole (203), and the head end of the connecting chain (20314) is provided with a magnetic sheet (20315); the two sides of the top end surface of the suction hole (203) are provided with magnetic sheets (20315) at corresponding positions.

2. A urinary stone grabbing device as claimed in claim 1, characterized in that: Each group of the suction holes (203) is located at the top end and the side of the working head (2), each group of the suction holes (203) is connected and communicated with the inner layer capsule (201) through the connecting pipe (2032), the inner layer capsule (201) is connected and communicated with the main air passage (101), and the outer layer capsule (202) is connected and communicated with the side air passage (102).

3. A urinary stone grabbing device as claimed in claim 1, wherein: The clamping plate (20313) is arc-shaped and faces inward, the clamping plate (20313) and the working plate (20312) are made of hard material, and the connecting chain (20314) is made of flexible material.

4. The urinary stone grabbing device as claimed in claim 1, wherein: The conduit (1) is provided with a control handle, the control handle is provided with a control knob and a control line, the control line is connected with the working head (2), the connection position of the control line and the working head (2) is provided with a connection knob, the control knob is connected with the control line through the connection shaft, the connection shaft is provided with a ratchet structure, the control knob is provided with an adjusting knob for controlling the working state of the ratchet structure.

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