A syringomyelia shunt-assisted catheterization tool

Abstract

The present invention discloses an auxiliary catheterization tool for syringomyelia shunt, which is characterized by comprising: a left holding ring, a left clamping rod, a left hinge part, a left transition connecting part, a left half clamping rod, a right holding ring, a right clamping rod, a right hinge part, a right transition connecting part, a right half clamping rod, a hinge shaft, a limit fixing part, and a guide wire; this device is specifically designed for catheterization in syringomyelia shunt, with fast catheterization operation, accelerating the surgical process, requiring a small surgical incision and causing no secondary damage to the incision.

Description

Technical Field

[0001] The present invention belongs to the field of syringomyelia shunt surgery, and particularly relates to a catheter placement assisting tool for syringomyelia shunt surgery. Background Art

[0002] The spinal cord is located in the spinal canal, connected to the medulla oblongata at the foramen magnum at the upper end, and tapering into a cone shape at the lower end. It is a channel connecting the central nervous system and the peripheral nervous system. The spinal cord transmits the instructions of the brain to various tissues throughout the body through nerve fibers, and also feeds back the sensations of all tissues in the body to the brain; when a cavity forms in the spinal cord, cerebrospinal fluid will flow into the syrinx, causing the spinal cord hydrostatic pressure to increase, compressing the nerves and resulting in sensory abnormalities or dissociations, limb weakness, nutritional disorders, etc. Such a lesion is called syringomyelia;

[0003] Currently, syringomyelia is treated by syringomyelia shunt surgery. The two horizontal ends of the T-shaped shunt tube are placed into the syrinx, and the vertical end is buried between the pia mater and the arachnoid mater. The fluid in the syrinx is shunted through the T-shaped shunt tube to between the pia mater and the arachnoid mater; during the clinical operation of placing the T-shaped tube, first, the position, shape, range, length and other condition information of the syrinx are determined according to magnetic resonance, then the lengths of the two horizontal ends of the T-shaped tube are cut according to the condition of the syrinx, an incision is made at the posterior median sulcus of the spinal cord, and then the two horizontal ends of the T-shaped tube are successively placed into the syrinx with micro forceps;

[0004] However, this surgical method of simply relying on micro forceps for manual catheter placement has several defects: 1. Although making a longitudinal incision on the spinal cord can minimize nerve damage to the greatest extent, it is still inevitable to cut the nerves. Therefore, in order to reduce spinal cord damage when making an incision at the posterior median sulcus of the spinal cord, a small incision is required. The two horizontal ends of the T-shaped tube are generally longer than the incision and need to be placed into the syrinx segment by segment, which increases the surgical difficulty and prolongs the operation time; 2. The T-shaped shunt tube is made of a special silicone material, is round and smooth on the surface, and is inevitably stained with liquid during the operation, making the surface even smoother. The tip of the micro forceps is thin and the clamping surface is flat. Therefore, when clamping the T-shaped tube and sending it into the syrinx, it will slip, causing the T-shaped tube to keep falling off. It takes a long time to place the two horizontal ends into the syrinx and is very exhausting for the surgeon's endurance. The repeated placement operations at the incision may also cause secondary damage to the incision. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention designs a catheter placement assisting tool for syringomyelia shunt surgery, which improves the catheter placement efficiency of the T-shaped tube during the operation.

[0006] In order to achieve the technical effect of a syringomyelia shunt assisted catheterization tool, the present invention is realized through the following technical solutions: A syringomyelia shunt assisted catheterization tool, characterized in that it includes: a left grip ring, a left clamping rod, a left hinge part, a left transition connection part, a left semi-clamping rod, a right grip ring, a right clamping rod, a right hinge part, a right transition connection part, a right semi-clamping rod, a hinge shaft, a limit fixing part, and a guide wire;

[0007] The left grip ring is connected to one end of the left clamping rod, the other end of the left clamping rod is connected to one end of the left hinge part, the other end of the left hinge part is connected to one end of the left transition connection part, and the other end of the left transition connection part is connected to one end of the left semi-clamping rod; the right grip ring is connected to one end of the right clamping rod, the other end of the right clamping rod is connected to one end of the right hinge part, the other end of the right hinge part is connected to one end of the right transition connection part, and the other end of the right transition connection part is connected to one end of the right semi-clamping rod; the left hinge part and the right hinge part are connected by a hinge shaft; inside the left clamping rod and the right clamping rod, near the left grip ring and the right grip ring, a limit fixing part is connected;

[0008] Further, the cross-sections of the left semi-clamping rod and the right semi-clamping rod are semi-circular, in the shape of a semi-circular tube; there are corrugated convex structures on the inner wall of the semi-circular tube;

[0009] Further, the left transition connection part and the right transition connection part are hollow inside, and the hollow part is in the shape of a semi-circular concave surface;

[0010] Further, the left hinge part and the right hinge part are hollow inside;

[0011] Further, a hinge shaft through hole is opened in the middle of the hinge shaft;

[0012] Further, the limit fixing part has two sections, which are respectively connected to the left grip ring and the right grip ring, and there are serrated structures on the contact surfaces of the two sections that bite each other;

[0013] Another object of the present invention is to provide a method for using a syringomyelia shunt assisted catheterization tool:

[0014] 1. Before the operation, judge the shape and length of the syringomyelia under magnetic resonance, and cut the horizontal end of the T-tube into an appropriate length according to the length of the syringomyelia;

[0015] 2. Separate the left semi-clamping rod and the right semi-clamping rod of the device, and pass the vertical end of the T-tube through the left hinge part, the right hinge part and the hinge shaft through hole on the hinge shaft between the left semi-clamping rod and the right semi-clamping rod to the outside of the device, and it is located between the left semi-clamping rod and the right semi-clamping rod;

[0016] 3. Keep the two horizontal ends of the T-tube vertically upward and fit together, so that the left semi-clamping rod and the right semi-clamping rod cover the two horizontal ends of the T-tube, and the three-way joint of the T-tube is located inside the left transition connection part and the right transition connection part;

[0017] 4. Clamp the left half clamping rod and the right half clamping rod and the left transition connecting part and the right transition connecting part, and lock the limit fixing part;

[0018] 5. When inserting the catheter, slowly pass the left half clamping rod and the right half clamping rod head of the device through the incision to the spinal cord cavity;

[0019] 6. Slightly open the left and right half clamping rods, use the guide wire to penetrate the vertical end of the T-tube, hold the three-way joint of the T-tube, and push the three-way joint forward;

[0020] 7. Push the two horizontal ends of the T-tube out of the left half clamping rod and the right half clamping rod to restore the two horizontal ends to a horizontal state;

[0021] 8. Observe whether the horizontal end of the T-tube is located in the syringomyelia.

[0022] Beneficial effects of the present invention:

[0023] 1. A syringomyelia shunt auxiliary catheter placement tool, wherein the left half clamping rod and the right half clamping rod are in a semicircular tube shape, which can fit the tube wall of the two horizontal ends of the T-tube to clamp the T-tube firmly;

[0024] 2. The left transition connection part and the right transition connection part are hollow inside and present a semicircular concave surface, which can be used to place the tee joints of the horizontal end and the vertical end of the T-tube, so as to avoid the tee joints being clamped in the left half clamping rod and the right half clamping rod, causing the clamping rod to be loosely closed;

[0025] 3. The two horizontal ends of the T-tube are attached to and clamped in the left and right half clamping rods in the vertical direction, the three-way joint is placed in the left and right transition connection parts, and the vertical end part passes through the left and right hinged parts and the hinged axis and is located outside the device, between the left and right clamping rods; when placing the tube, it is only necessary to close the left and right half clamping rods, directly send them into the spinal cord cavity from the incision, and then slightly separate the left and right half clamping rods, use a guide wire to pass through the vertical part of the T-tube to reach the three-way joint, push the shunt tube forward, push the two horizontal ends out of the left and right half clamping rods into the spinal cord cavity and restore the horizontal state; this method of tube placement is faster than traditional micro-forceps tube placement, the shunt tube is firmly clamped during the tube placement process, the operation process is accelerated, and the required incision is smaller, and there is no secondary damage to the incision.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic diagram of an auxiliary catheterization tool for syringomyelia shunt Figure 1 ;

[0029] Figure 2 is a schematic diagram of an auxiliary catheterization tool for syringomyelia shunt Figure 2 ;

[0030] Figure 3 is a partial three-dimensional schematic diagram of an auxiliary catheterization tool for syringomyelia shunt Figure 1 ;

[0031] Figure 4 is a partial three-dimensional schematic diagram of an auxiliary catheterization tool for syringomyelia shunt Figure 2 ;

[0032] Figure 5 is a schematic diagram of the hinge shaft and hinge part of an auxiliary catheterization tool for syringomyelia shunt;

[0033] Figure 6 is a schematic diagram of the guide wire of an auxiliary catheterization tool for syringomyelia shunt;

[0034] Figure 7 is a schematic diagram of the clamping T-shaped shunt tube of an auxiliary catheterization tool for syringomyelia shunt;

[0035] In the drawings, the list of components represented by each reference numeral is as follows:

[0036] 1 - left grip ring, 2 - left clamping rod, 3 - left hinge part, 4 - left transition connection part, 5 - left half clamping rod, 6 - right grip ring, 7 - right clamping rod, 8 - right hinge part, 9 - right transition connection part, 10 - right half clamping rod, 11 - hinge shaft, 1101 - hinge shaft through hole, 12 - limit fixing part, 13 - guide wire. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] Embodiment 1

[0039] Refer to Figures 1 to 7 As shown, an auxiliary catheterization tool for syringomyelia shunt, characterized by comprising: a left grip ring 1, a left clamping rod 2, a left hinge part 3, a left transition connecting part 4, a left semi-clamping rod 5, a right grip ring 6, a right clamping rod 7, a right hinge part 8, a right transition connecting part 9, a right semi-clamping rod 10, a hinge shaft 11, a limit fixing part 12, and a guide wire 13;

[0040] The left grip ring 1 is connected to one end of the left clamping rod 2, the other end of the left clamping rod 2 is connected to one end of the left hinge part 3, the other end of the left hinge part 3 is connected to one end of the left transition connecting part 4, and the other end of the left transition connecting part 4 is connected to one end of the left semi-clamping rod 5; the right grip ring 6 is connected to one end of the right clamping rod 7, the other end of the right clamping rod 7 is connected to one end of the right hinge part 8, the other end of the right hinge part 8 is connected to one end of the right transition connecting part 9, and the other end of the right transition connecting part 9 is connected to one end of the right semi-clamping rod 10; the cross-sections of the left semi-clamping rod 5 and the right semi-clamping rod 10 are semi-circular, in a semi-circular tubular shape, with a corrugated convex structure on the inner wall of the semi-circular tubular shape. The semi-circular tubular structure can fit the tube wall of the horizontal end of the T-shaped tube, and the corrugated convex structure can make the clamping of the T-shaped tube more stable; the left transition connecting part 4 and the right transition connecting part 9 are hollow inside, and the hollow part is in a semi-circular concave surface. The three-way joint of the T-shaped tube can be clamped inside the left transition connecting part 4 and the right transition connecting part 9, avoiding the situation that the three-way joint is clamped inside the left semi-clamping rod 5 and the right semi-clamping rod 10, resulting in the clamping rods not closing tightly; the left hinge part 3 and the right hinge part 8 are connected by the hinge shaft 11; the left hinge part 3 and the right hinge part 8 are hollow inside, and a hinge shaft through hole 1101 is opened in the middle of the hinge shaft 11. The vertical end of the T-shaped tube can pass through the left hinge part 3, the right hinge part 8, and the hinge shaft through hole 1101;

[0041] On the inner sides of the left clamping rod 2 and the right clamping rod 7, near the left grip ring 1 and the right grip ring 6, a limit fixing part 12 is connected; the limit fixing part 12 is divided into two sections, which are respectively connected to the left grip ring 1 and the right grip ring 6, and there are serrated structures on the contact surfaces of the two sections that bite each other; the biting of the two sections of the limit fixing part 12 can keep the left semi-clamping rod 5 and the right semi-clamping rod 10 closed.

[0042] Embodiment 2

[0043] Refer to Figures 1 to 7 As shown, an auxiliary catheterization tool for syringomyelia shunt, characterized by comprising: a left grip ring 1, a left clamping rod 2, a left hinge part 3, a left transition connecting part 4, a left semi-clamping rod 5, a right grip ring 6, a right clamping rod 7, a right hinge part 8, a right transition connecting part 9, a right semi-clamping rod 10, a hinge shaft 11, a limit fixing part 12, and a guide wire 13;

[0044] The left grip ring 1 is connected to one end of the left clamping rod 2. The other end of the left clamping rod 2 is connected to one end of the left hinge part 3. The other end of the left hinge part 3 is connected to one end of the left transition connecting part 4. The other end of the left transition connecting part 4 is connected to one end of the left half clamping rod 5. The right grip ring 6 is connected to one end of the right clamping rod 7. The other end of the right clamping rod 7 is connected to one end of the right hinge part 8. The other end of the right hinge part 8 is connected to one end of the right transition connecting part 9. The other end of the right transition connecting part 9 is connected to one end of the right half clamping rod 10. The cross-sections of the left half clamping rod 5 and the right half clamping rod 10 are semi-circular, in the shape of a semi-circular tube. There are corrugated convex structures on the inner wall of the semi-circular tube. The semi-circular tube structure can fit the tube wall of the horizontal end of the T-shaped tube. Coupled with the corrugated convex structure, the T-shaped tube can be clamped more firmly. The left transition connecting part 4 and the right transition connecting part 9 are hollow inside, and the hollow part is in the shape of a semi-circular concave surface. The three-way joint of the T-shaped tube can be clamped inside the left transition connecting part 4 and the right transition connecting part 9, avoiding the situation that the three-way joint is clamped inside the left half clamping rod 5 and the right half clamping rod 10, resulting in the clamping rods not closing tightly. The left hinge part 3 and the right hinge part 8 are connected by a hinge shaft 11. The left hinge part 3 and the right hinge part 8 are hollow inside. A hinge shaft through hole 1101 is opened in the middle of the hinge shaft 11. The vertical end of the T-shaped tube can pass through the left hinge part 3, the right hinge part 8 and the hinge shaft through hole 1101.

[0045] The left half clamping rod 5 and the right half clamping rod 10 are telescopic structures, and the lengths of the left half clamping rod 5 and the right half clamping rod 10 can be adjusted to be the same as the length of the horizontal end of the T-shaped tube according to the length of the horizontal end of the T-shaped tube after cutting, which can speed up the pushing out of the horizontal end of the T-shaped tube from the syringomyelia during catheter placement.

[0046] On the inner sides of the left clamping rod 2 and the right clamping rod 7, near the left grip ring 1 and the right grip ring 6, there are limit fixing parts 12 connected. The limit fixing part 12 is divided into two sections, which are respectively connected to the left grip ring 1 and the right grip ring 6. There are serrated structures on the contact surfaces of the two sections that bite each other. The biting of the two sections of the limit fixing part 12 can keep the left half clamping rod 5 and the right half clamping rod 10 closed.

[0047] Usage method:

[0048] 1. Before the operation, judge the shape and length of the syringomyelia under magnetic resonance, and cut the horizontal end of the T-shaped tube into an appropriate length according to the length of the syringomyelia.

[0049] 2. Separate the left half clamping rod and the right half clamping rod of the device. The vertical end of the T-shaped tube passes through the left hinge part, the right hinge part and the hinge shaft through hole on the hinge shaft between the left half clamping rod and the right half clamping rod to the outside of the device and is located between the left half clamping rod and the right half clamping rod.

[0050] 3. Keep the two horizontal ends of the T-shaped tube vertically upward and fit together, so that the left half clamping rod and the right half clamping rod cover the two horizontal ends of the T-shaped tube, and the three-way joint of the T-shaped tube is located inside the left transition connecting part and the right transition connecting part.

[0051] 4. Clamp the left half clamping rod and the right half clamping rod and the left transition connecting part and the right transition connecting part, and lock the limit fixing part;

[0052] 5. When inserting the catheter, slowly pass the left half clamping rod and the right half clamping rod head of the device through the incision to the spinal cord cavity;

[0053] 6. Slightly open the left and right half clamping rods, use the guide wire to penetrate the vertical end of the T-tube, hold the three-way joint of the T-tube, and push the three-way joint forward;

[0054] 7. Push the two horizontal ends of the T-tube out of the left half clamping rod and the right half clamping rod to restore the two horizontal ends to a horizontal state;

[0055] 8. Observe whether the horizontal end of the T-tube is located in the syringomyelia.

[0056] In summary, 1. A syringomyelia shunt auxiliary catheter placement tool, wherein the left half clamping rod 5 and the right half clamping rod 10 are in a semicircular tube shape, which can fit the tube walls of the two horizontal ends of the T-tube to firmly clamp the T-tube;

[0057] 2. The left transition connection part 4 and the right transition connection part 9 are hollow inside and present a semicircular concave surface, which can be used to place the tee joints of the horizontal end and the vertical end of the T-shaped pipe, so as to avoid the tee joints being clamped in the left half clamping rod 5 and the right half clamping rod 10, causing the clamping rods to be loosely closed;

[0058] 3. The two horizontal ends of the T-tube are attached to and clamped in the left and right half clamping rods in the vertical direction, the three-way joint is placed in the left and right transition connection parts, and the vertical end part passes through the left and right hinged parts and the hinge axis 11 and is located outside the device, between the left and right clamping rods; when placing the tube, it is only necessary to close the left and right half clamping rods, directly send them into the spinal cord cavity from the incision, and then slightly separate the left and right half clamping rods, use a guide wire to pass through the vertical part of the T-tube to reach the three-way joint, push the shunt tube forward, push the two horizontal ends out of the left and right half clamping rods into the spinal cord cavity and restore the horizontal state; this method of tube placement is faster than traditional micro-forceps tube placement, the shunt tube is firmly clamped during the tube placement process, the operation process is accelerated, and the required incision is smaller, and there is no secondary damage to the incision.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An auxiliary catheterization tool for syringomyelia shunt, characterized in that, Comprising: Left grip ring, left clamping rod, left hinge part, left transition connection part, left half clamping rod, right grip ring, right clamping rod, right hinge part, right transition connection part, right half clamping rod, hinge shaft, limit fixing part, guide wire; The left grip ring is connected to one end of the left clamping rod, the other end of the left clamping rod is connected to one end of the left hinge part, the other end of the left hinge part is connected to one end of the left transition connection part, and the other end of the left transition connection part is connected to one end of the left half clamping rod; the right grip ring is connected to one end of the right clamping rod, the other end of the right clamping rod is connected to one end of the right hinge part, the other end of the right hinge part is connected to one end of the right transition connection part, and the other end of the right transition connection part is connected to one end of the right half clamping rod; the left hinge part and the right hinge part are connected by a hinge shaft; inside the left clamping rod and the right clamping rod, near the left grip ring and the right grip ring, a limit fixing part is connected; The cross-sections of the left half clamping rod and the right half clamping rod are semi-circular, in the shape of a semi-circular tube; there are corrugated convex structures on the inner wall of the semi-circular tube; The left transition connection part and the right transition connection part are hollow inside, and the hollow part is in the shape of a semi-circular concave surface; The left hinge part and the right hinge part are hollow inside; A through hole is opened in the middle of the hinge shaft; the three-way joint of the T-shaped tube is clamped inside the left transition connection part and the right transition connection part, to prevent the three-way joint from being clamped inside the left half clamping rod and the right half clamping rod, resulting in incomplete closure of the clamping rod.

2. The auxiliary catheterization tool for syringomyelia shunt according to claim 1, characterized in that, The limit fixing part has two sections, which are respectively connected to the left grip ring and the right grip ring, and there are serrated structures on the contact surfaces of the two sections that bite into each other.

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