Bendable sheath for percutaneous nephroscope lithotripsy and flexible lens set

Abstract

The invention belongs to the field of kidney stone surgery, and provides a flexible sheath and flexible lens set for percutaneous nephrolithotomy, which comprises a fixed seat, the inside of the fixed seat is hollow, and a bending control mechanism is mounted on the outer wall of the top of the fixed seat; an adjuster is installed at the position, close to the bending control mechanism, of the outer wall of the top of the fixing base, and the eyepiece is installed on the outer wall of the top of the adjuster; the soft lens mechanism is mounted on the outer wall of the bottom of the fixed seat; the soft lens channel is connected to the outer side of the soft lens mechanism in a sleeving manner; the flexible nephroscope sheath and the nephroscope sheath bending part wrap the flexible nephroscope and the nephroscope bending part, bending of the nephroscope sheath bending part enables the nephroscope bending part to be easier to bend and move and not to be loosened during bending, the whole flexible nephroscope mechanism is more stable during bending and moving, and follow-up lithotripsy work is facilitated.

Description

Technical Field

[0001] The invention belongs to the field of kidney stone surgery, in particular to a flexible sheath and a soft mirror set for percutaneous nephrolithotomy. Background Art

[0002] Kidney stones need to be treated surgically, and the stones can be removed through percutaneous nephrolithotomy, a modern minimally invasive surgical technique that uses a nephroscope to pass through the cutaneous renal channel (a channel that penetrates the skin into the renal pelvis and calyx) to break up and remove stones in the body.

[0003] After searching, it was found that the existing devices have some problems when in use. During the percutaneous nephrolithotomy operation, the head of the nephroscope needs to be bent to the location of the stone to remove the stone. The flexible nephroscope bends inside the kidney's collecting system by its own bending. When the head of the flexible nephroscope is far away from the tube wrapped on the outside, the movement of the flexible nephroscope is unstable, thereby affecting the image treatment of kidney stones.

[0004] To this end, those skilled in the art have proposed a flexible sheath and soft endoscope set for percutaneous nephrolithotomy to solve the problems raised by the background art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a flexible sheath and soft endoscope set for percutaneous nephrolithotomy to solve the problem in the prior art that the head of the soft nephroscope is far away from the outer wrapped tube and the soft nephroscope moves unstably.

[0006] A flexible sheath and soft endoscope set for percutaneous nephrolithotomy, comprising:

[0007] A fixing seat, the interior of which is hollow, and a bending control mechanism is installed on the top outer wall of the fixing seat;

[0008] The eyepiece is provided with an adjuster at a position of the top outer wall of the fixing seat close to the bending control mechanism, and the eyepiece is installed on the top outer wall of the adjuster;

[0009] A soft mirror mechanism, wherein the soft mirror mechanism is mounted on the bottom outer wall of the fixing seat;

[0010] A soft mirror channel, wherein the soft mirror channel is sleeved on the outside of the soft mirror mechanism, a gap is left between the head of the soft mirror channel and the head of the soft mirror mechanism, and the heads of the soft mirror mechanism and the soft mirror channel are both curved;

[0011] The percutaneous renal puncture outer sheath is sleeved on the outer wall of the soft endoscope channel.

[0012] Preferably, the soft endoscope mechanism includes a soft nephroscope, one end of the soft nephroscope is inserted into the bottom outer wall of the fixing seat, the other end of the soft nephroscope is fixed with a nephroscope bending part, the interior of the soft nephroscope is sleeved with an inner sheath, a forceps pipe is inserted at the center of the inner sheath, one end of the forceps pipe is flush with the head of the nephroscope bending part, the other end of the forceps pipe passes through the interior of the fixing seat, and the other end of the forceps pipe is located on one side outer wall of the fixing seat, and a sealing plug is installed at one end of the forceps pipe close to the fixing seat.

[0013] Preferably, angle steel wires are installed at positions near both sides of the inside of the soft nephroscope and the curved part of the nephroscope, and a water supply pipe, an air supply pipe, a light guide, a photosensitive coupling component and an objective lens are inserted into the inside of the soft nephroscope and the curved part of the nephroscope, one end of the water supply pipe, the air supply pipe, the light guide, the photosensitive coupling component and the objective lens is flush with the head of the forceps pipe, and the other ends of the water supply pipe, the air supply pipe, the light guide, the photosensitive coupling component and the objective lens lead to the inside of the fixed seat, the angle steel wire, the water supply pipe, the air supply pipe, the light guide, the photosensitive coupling component and the objective lens are all wrapped by an inner sheath, and fillers are arranged at other positions inside the inner sheath, an installation opening is opened on the outer wall of one side of the fixed seat, and the other ends of the water supply pipe, the air supply pipe, the light guide and the photosensitive coupling component are fixed at a position inside the installation opening.

[0014] Preferably, the bottom end of the eyepiece passes through the adjuster and extends into the interior of the fixing seat, and the bottom end of the eyepiece is connected to the top end of the objective lens.

[0015] Preferably, the bending control mechanism includes a bending ring seat, which is installed on the surface of a fixed seat, and connecting plates are rotatably inserted at the center positions of the outer walls on both sides of the bending ring seat, and the same connecting shaft is fixed inside the two connecting plates, one end of the soft nephroscope is connected to the connecting shaft, and operating rods are fixed on the outer walls of one side of the two connecting plates, and the same connecting rod is fixed on the outer walls on the side opposite to the two operating rods.

[0016] Preferably, the soft endoscope channel includes a soft nephroscope sheath, a nephroscope sheath bending portion is installed at the bottom end of the soft nephroscope sheath, the soft nephroscope sheath and the nephroscope sheath bending portion are wrapped around the outside of the soft nephroscope and the nephroscope bending portion, the top end of the soft nephroscope sheath is sleeved with a sleeve, and a fixing tube is inserted into the outer wall of one side of the sleeve.

[0017] Preferably, the percutaneous renal puncture outer sheath is wrapped around the outside of the soft nephroscope sheath, and a double clamp tube is provided at the top of the percutaneous renal puncture outer sheath, one end of the double clamp tube is clamped on the circumferential outer wall of the percutaneous renal puncture outer sheath, and the other end of the double clamp tube is clamped on the circumferential outer wall of the soft nephroscope.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention is provided with a nephroscope bending part, a soft nephroscope sheath, a nephroscope sheath bending part and a percutaneous renal puncture outer sheath. The nephroscope bending part is fixed to the bottom of the soft nephroscope and can be rotated at a certain angle inside the kidney, so as to facilitate the accurate movement of the nephroscope bending part to the location of the stone. The soft nephroscope sheath and the nephroscope sheath bending part are wrapped around the outside of the soft nephroscope and the nephroscope bending part. The bending of the nephroscope sheath bending part makes the nephroscope bending part easier to bend and move, and will not become loose when bending, so that the overall soft endoscope mechanism is more stable when bending and moving, which is convenient for subsequent lithotripsy.

[0020] 2. The present invention is provided with a double clamp tube, one end of the double clamp tube clamps the outer sheath of percutaneous renal puncture, and the other end of the double clamp tube clamps the soft nephroscope, thereby fixing the soft nephroscope to prevent the soft nephroscope from moving. After removing the double clamp tube, the soft nephroscope mechanism can be driven to move inside the kidney through the bending control mechanism. The bending part of the nephroscope pin and the bending part of the nephroscope are located inside the kidney, so that the bending part of the nephroscope moves to the stone. The bending part of the nephroscope will not loosen under the action of the soft nephroscope sheath, thereby facilitating the subsequent laser lithotripsy by the forceps pipe, and then the broken stones in the kidney are removed by the forceps inside the forceps pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the soft lens mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the soft endoscope channel of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the percutaneous renal puncture channel of the present invention;

[0025] Figure 5 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0026] Figure 6 It is a schematic diagram of the structure of the soft mirror mechanism of the present invention after the head is peeled off layer by layer;

[0027] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at B.

[0028] In the figure:

[0029] 1. Fixing seat; 2. Bending control mechanism; 3. Soft endoscope mechanism; 4. Soft endoscope channel; 5. Percutaneous renal puncture outer sheath; 6. Eyepiece; 7. Regulator; 8. Double clamp tube;

[0030] 201, bent ring seat; 202, connecting piece; 203, operating rod; 204, connecting rod;

[0031] 301, curved part of nephroscope; 302, flexible nephroscope; 303, forceps pipeline; 304, sealing plug; 305, inner sheath; 306, angle wire; 307, water supply pipe; 308, air supply pipe; 309, light guide; 310, photosensitive coupling assembly; 311, objective lens; 312, filler;

[0032] 401. bending part of nephroscope sheath; 402. soft nephroscope sheath; 403. cannula; 404. fixing tube. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] Reference Figure 1-Figure 7 The present invention provides a flexible sheath and soft endoscope set for percutaneous nephrolithotomy, comprising:

[0035] A fixing seat 1, the interior of the fixing seat 1 is hollow, and a bending control mechanism 2 is installed on the top outer wall of the fixing seat 1;

[0036] The eyepiece 6 is provided with an adjuster 7 at a position of the top outer wall of the fixing seat 1 close to the bending control mechanism 2, and the eyepiece 6 is installed on the top outer wall of the adjuster 7;

[0037] A soft mirror mechanism 3, which is mounted on the bottom outer wall of the fixing seat 1;

[0038] A soft mirror channel 4, which is sleeved on the outside of the soft mirror mechanism 3, with a gap between the head of the soft mirror channel 4 and the head of the soft mirror mechanism 3, and the heads of the soft mirror mechanism 3 and the soft mirror channel 4 are both curved;

[0039] The percutaneous renal puncture outer sheath 5 is sleeved on the outer wall of the soft endoscope channel 4 .

[0040] As can be seen from the above, when using it, the patient is first made to lie on the operating table after general anesthesia, and then the medical staff inserts a hollow catheter into the patient's bladder, empties the bladder, uses an inflated balloon to fix the catheter in a suitable position, and then passes another catheter and inserts it into the ureter. One end of the ureter leads to the patient's kidney. Contrast dye is injected into the catheter to facilitate observation and determination of the location of kidney stones and find the location of entry into the kidney. The urethra image is displayed through ultrasound. After the location of the stone is determined, a thin needle is inserted into the collecting system of the kidney. After the channel is expanded, the percutaneous renal puncture of the device is inserted using a guide wire. The puncture sheath 5 is fixed at the channel of the kidney, and then the soft endoscope channel 4 is inserted into the inside of the percutaneous renal puncture sheath 5, and the soft endoscope mechanism 3 is placed inside the soft endoscope channel 4. Then the medical staff bends and moves the head of the soft endoscope mechanism 3 to the stone in the kidney through the bending control mechanism 2, and then the small stones are taken out, and the large stones are broken by laser before being taken out. After all the stones are taken out, contrast imaging is performed. If the contrast agent passes through the bladder smoothly, it means that there are no stones in the feed tube, and the stone work is completed. Then the medical staff performs subsequent surgery to complete the percutaneous renal nephrolithotomy surgery.

[0041] Specifically, the soft endoscope mechanism 3 includes a soft nephroscope 302, one end of which is inserted into the bottom outer wall of the fixed seat 1, and the other end of the soft nephroscope 302 is fixed with a nephroscope bending portion 301, the interior of the soft nephroscope 302 is sleeved with an inner sheath 305, and a forceps pipe 303 is inserted at the center of the inner sheath 305, one end of the forceps pipe 303 is flush with the head of the nephroscope bending portion 301, and the other end of the forceps pipe 303 passes through the interior of the fixed seat 1, and the other end of the forceps pipe 303 is located on one side outer wall of the fixed seat 1, and a sealing plug 304 is installed at one end of the forceps pipe 303 close to the fixed seat 1.

[0042] As can be seen from the above, after removing the sealing plug 304, the forceps are sent into the interior of the forceps pipe 303, and one end of the forceps extends from the head of the soft mirror mechanism 3 to remove the stones, and can also be used to break the stones through laser equipment.

[0043] Specifically, angle wires 306 are installed near both sides of the inside of the soft nephroscope 302 and the curved part 301 of the nephroscope. A water supply pipe 307, an air supply pipe 308, a light guide 309, a photosensitive coupling assembly 310 and an objective lens 311 are inserted into the inside of the soft nephroscope 302 and the curved part 301 of the nephroscope. One end of the water supply pipe 307, the air supply pipe 308, the light guide 309, the photosensitive coupling assembly 310 and the objective lens 311 is flush with the head of the forceps pipeline 303. 309, the other ends of the photosensitive coupling assembly 310 and the objective lens 311 lead to the interior of the fixed seat 1, the angle wire 306, the water supply pipe 307, the air supply pipe 308, the light guide 309, the photosensitive coupling assembly 310 and the objective lens 311 are all wrapped by the inner sheath 305, and the rest of the inner sheath 305 is provided with fillers 312, and an installation opening is opened on the outer wall of one side of the fixed seat 1, and the other ends of the water supply pipe 307, the air supply pipe 308, the light guide 309 and the photosensitive coupling assembly 310 are fixed at the position inside the installation opening.

[0044] As can be seen from the above, the internal fixation of the flexible mirror mechanism 3 is reinforced by the angle wire 306, and the water supply pipe 307, the air supply pipe 308, the light guide 309 and the photosensitive coupling component 310 are used to facilitate the percutaneous nephrolithotomy surgery, thereby facilitating the treatment of stones inside the kidney.

[0045] Specifically, the bottom end of the eyepiece 6 passes through the adjuster 7 and extends into the interior of the fixing base 1 , and the bottom end of the eyepiece 6 is connected to the top end of the objective lens 311 .

[0046] As can be seen from the above, medical staff can observe the internal conditions of the kidney through the eyepiece 6 and the objective lens 311, thereby facilitating the determination of the location of the stone and the treatment of the stone.

[0047] Specifically, the bending control mechanism 2 includes a bending ring seat 201, which is installed on the surface of the fixed seat 1. Connecting pieces 202 are rotatably inserted at the center positions of the outer walls on both sides of the bending ring seat 201. The same connecting shaft is fixed inside the two connecting pieces 202. One end of the soft nephroscope 302 is connected to the connecting shaft. An operating rod 203 is fixed on the outer wall of one side of the two connecting pieces 202, and the same connecting rod 204 is fixed on the outer wall on the side opposite to the two operating rods 203.

[0048] As can be seen from the above, the medical staff swings the operating rod 203 up and down, and drives the flexible nephroscope 302 to drive the rotation of the nephroscope bending part 301, so as to facilitate moving the head of the flexible nephroscope mechanism 3 to the location of the stone.

[0049] Specifically, the soft endoscope channel 4 includes a soft nephroscope sheath 402, a nephroscope sheath bending portion 401 is installed at the bottom end of the soft nephroscope sheath 402, the soft nephroscope sheath 402 and the nephroscope sheath bending portion 401 are wrapped around the outside of the soft nephroscope 302 and the nephroscope bending portion 301, the top end of the soft nephroscope sheath 402 is sleeved with a sleeve 403, and a fixing tube 404 is inserted into the outer wall of one side of the sleeve 403.

[0050] As can be seen from the above, the soft nephroscope sheath 402 and the nephroscope sheath bending portion 401 wrap the soft nephroscope 302 and the nephroscope bending portion 301, which facilitates the bending of the nephroscope bending portion 301 and prevents the nephroscope bending portion 301 from loosening when moving.

[0051] Specifically, the percutaneous renal puncture outer sheath 5 is wrapped around the outside of the soft nephroscope sheath 402, and a double clamp tube 8 is provided at the top of the percutaneous renal puncture outer sheath 5, one end of the double clamp tube 8 is clamped on the circumferential outer wall of the percutaneous renal puncture outer sheath 5, and the other end of the double clamp tube 8 is clamped on the circumferential outer wall of the soft nephroscope 302.

[0052] As can be seen from the above, one end of the double clamp tube 8 clamps the percutaneous renal puncture outer sheath 5, and the other end of the double clamp tube 8 clamps the soft nephroscope 302, thereby fixing the soft nephroscope 302 and preventing the soft nephroscope 302 from moving. After removing the double clamp tube 8, the flexible mirror mechanism 3 can be driven to move inside the kidney through the bending control mechanism 2. After the flexible mirror mechanism 3 is moved to the specified position, it is clamped by the double clamp tube 8 to prevent the device from moving, thereby facilitating the operation.

[0053] When in use, the patient is first made to lie on the operating table after general anesthesia, and then the medical staff inserts a hollow catheter into the patient's bladder, empties the bladder, uses an inflated balloon to fix the catheter in a suitable position, and then passes another catheter and inserts it into the ureter. One end of the ureter leads to the patient's kidney. Contrast dye is injected into the catheter to facilitate observation and determination of the location of kidney stones and find the location of entry into the kidney. The urethra image is displayed through ultrasound. After the location of the stone is determined, a thin needle is inserted into the kidney's collecting system. After the channel is expanded, the percutaneous renal puncture outer sheath of the device is inserted using a guide wire. 5 is fixed at the channel of the kidney, and then the soft endoscope channel 4 is placed inside the percutaneous renal puncture outer sheath 5, and the soft endoscope mechanism 3 is placed inside the soft endoscope channel 4. Then, the medical staff bends and moves the head of the soft endoscope mechanism 3 to the stone in the kidney through the bending control mechanism 2, and then removes small stones. Large stones are broken by laser and then removed. After all the stones are removed, contrast imaging is performed. If the contrast agent passes through the bladder smoothly, it means that there are no stones in the feeding tube, and the stone removal work is completed. Then, the medical staff performs subsequent surgery to complete the percutaneous renal nephrolithotomy surgery.

[0054] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A flexible sheath and soft endoscope set for percutaneous nephrolithotomy, characterized in that: include: A fixing seat (1), the interior of the fixing seat (1) is hollow, and a bending control mechanism (2) is installed on the top outer wall of the fixing seat (1); An eyepiece (6), wherein an adjuster (7) is installed at a position of the top outer wall of the fixing seat (1) close to the bending control mechanism (2), and the eyepiece (6) is installed on the top outer wall of the adjuster (7); A soft mirror mechanism (3), wherein the soft mirror mechanism (3) is mounted on the bottom outer wall of the fixing seat (1); A soft mirror channel (4), wherein the soft mirror channel (4) is sleeved on the outside of the soft mirror mechanism (3), a gap is left between the head of the soft mirror channel (4) and the head of the soft mirror mechanism (3), and the heads of the soft mirror mechanism (3) and the soft mirror channel (4) are both curved; A percutaneous renal puncture outer sheath (5), wherein the percutaneous renal puncture outer sheath (5) is sleeved on the outer wall of the soft endoscope channel (4).

2. A flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 1, characterized in that: The soft nephroscope mechanism (3) comprises a soft nephroscope (302), one end of which is plugged into the bottom outer wall of the fixing seat (1), the other end of which is fixed with a nephroscope bending portion (301), the interior of the soft nephroscope (302) is sleeved with an inner sheath (305), a forceps pipe (303) is plugged into the center of the inner sheath (305), one end of the forceps pipe (303) is flush with the head of the nephroscope bending portion (301), the other end of the forceps pipe (303) passes through the interior of the fixing seat (1), and the other end of the forceps pipe (303) is located on one side outer wall of the fixing seat (1), and a sealing plug (304) is installed at one end of the forceps pipe (303) close to the fixing seat (1).

3. A flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 2, characterized in that: Angle steel wires (306) are installed near both sides of the inside of the soft nephroscope (302) and the curved part (301) of the nephroscope. A water supply pipe (307), an air supply pipe (308), a light guide (309), a photosensitive coupling component (310) and an objective lens (311) are inserted into the inside of the soft nephroscope (302) and the curved part (301). One end of the water supply pipe (307), the air supply pipe (308), the light guide (309), the photosensitive coupling component (310) and the objective lens (311) is flush with the head of the forceps pipe (303). 09), the other ends of the photosensitive coupling assembly (310) and the objective lens (311) lead to the interior of the fixed seat (1); the angle steel wire (306), the water supply pipe (307), the air supply pipe (308), the light guide (309), the photosensitive coupling assembly (310) and the objective lens (311) are all wrapped by the inner sheath (305); the rest of the inner sheath (305) is provided with a filler (312); an installation opening is opened on the outer wall of one side of the fixed seat (1); the other ends of the water supply pipe (307), the air supply pipe (308), the light guide (309) and the photosensitive coupling assembly (310) are fixed at a position inside the installation opening.

4. A flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 3, characterized in that: The bottom end of the eyepiece (6) passes through the adjuster (7) and extends into the interior of the fixing seat (1), and the bottom end of the eyepiece (6) is connected to the top end of the objective lens (311).

5. The flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 2, characterized in that: The bending control mechanism (2) comprises a bending ring seat (201), the bending ring seat (201) is mounted on the surface of the fixing seat (1), connecting pieces (202) are rotatably plugged in the center positions of the outer walls on both sides of the bending ring seat (201), a same connecting shaft is fixed inside the two connecting pieces (202), one end of the soft nephroscope (302) is connected to the connecting shaft, an operating rod (203) is fixed on one side of the outer wall of the two connecting pieces (202), and a same connecting rod (204) is fixed on the outer wall on the side opposite to the two operating rods (203).

6. The flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 2, characterized in that: The soft endoscope channel (4) comprises a soft nephroscope sheath (402), a nephroscope sheath curved portion (401) is installed at the bottom end of the soft nephroscope sheath (402), the soft nephroscope sheath (402) and the nephroscope sheath curved portion (401) are wrapped around the outside of the soft nephroscope (302) and the nephroscope curved portion (301), the top end of the soft nephroscope sheath (402) is sleeved with a sleeve (403), and a fixing tube (404) is inserted on the outer wall of one side of the sleeve (403).

7. A flexible sheath and soft endoscope set for percutaneous nephrolithotomy according to claim 6, characterized in that: The percutaneous renal puncture outer sheath (5) is wrapped around the outer side of the soft nephroscope sheath (402), and a double clamp tube (8) is provided at the top end of the percutaneous renal puncture outer sheath (5), one end of the double clamp tube (8) is clamped on the circumferential outer wall of the percutaneous renal puncture outer sheath (5), and the other end of the double clamp tube (8) is clamped on the circumferential outer wall of the soft nephroscope (302).

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