A segmented, malleable ventriculoperitoneal shunt

Abstract

This invention provides a segmented, malleable ventriculoperitoneal shunt strip, relating to the field of medical device technology. It includes a tubular disc with a catheter extending from one end, through which a push tube is inserted. A first segmented tube is fixed to the other end of the disc, and a second and third segmented tube are sequentially assembled at the end of the first segmented tube. The advantages of this invention are: the telescopically combinable tubular structure, combined with a two-section push-tube core, facilitates the adjustment of the telescopic position of each segment during subcutaneous tunneling by manipulating the external push-structure according to the length requirements of each segment along a preset path. When each segmented tube contracts, its overall rigidity allows for normal insertion. Simultaneously, the unused segments after extension, combined with the high flexibility of the tube material, allow for easy shaping and adjustment along the path, enabling adjustment of the segment position based on the actual path conditions. This improves the operability and practicality of the shunt strip.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a segmented, malleable ventriculoperitoneal shunt strip. Background Technology

[0002] Ventriculoperitoneal shunt is a common method for treating hydrocephalus by surgically implanting a shunt device. The principle is to drain the cerebrospinal fluid accumulated in the ventricles into the peritoneum for absorption by the peritoneum. The surgery is usually performed under general anesthesia. The doctor drills a hole in the skull and inserts a catheter, with one end placed in the ventricle and the other end extending through a subcutaneous tunnel into the peritoneum. A pressure regulating valve controls the drainage speed and direction to prevent backflow. This procedure is suitable for congenital hydrocephalus, cerebral hemorrhage, cerebrospinal fluid circulation disorders caused by infection or tumors, and can effectively relieve headaches, vomiting, and neurological damage caused by increased intracranial pressure. Because the indwelling shunt catheter is a soft tube, a shunt strip is needed to pre-establish the subcutaneous tunnel when introducing the shunt catheter. It is usually composed of a hollow tube and a solid core. In the current usage scenario, since the subcutaneous tunnel needs to be advanced layer by layer from the skull drilling point along the pre-set path behind the ear, neck, chest wall and upper abdomen, the traditional strip is easy to be obstructed at each segment position in the pre-set path because the head and tail ends are made of a straight structure of tough material. At the same time, the force control of the core head is poor during the movement of the tail end. Therefore, the existing shunt strip requires a high level of experience and skill from the operator when establishing the subcutaneous tunnel, which is relatively accompanied by safety risks and increases the difficulty of ventriculoperitoneal shunt placement. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing shunt strip structure has poor control over the tail end, making it inconvenient to provide real-time operational feedback and manual adjustment during the preset path advancement process. In view of the problems existing in the prior art, a segmented and malleable ventriculoperitoneal shunt strip is provided.

[0004] The purpose and effect of this utility model are achieved by the following specific technical means: including a tube disc, one end of which extends to form a guide tube, and a push tube is provided through the guide tube; The other end of the tube coil is fixed with a first segment tube, and the end of the first segment tube is sequentially assembled with a second segment tube and a third segment tube. The first segment tube, the second segment tube and the third segment tube are progressively arranged in multiple stages and each slides with the upper stage. A guide bar is provided between the third segment tube and the push tube. The guide bar extends to form a blunt head and a handle head at the outer ends of the third segment tube and the push tube, respectively. The second and third segmented pipes have axial limiting parts at their sliding ends with the upper section, and the push pipe and the guide bar core are respectively equipped with a pipe clamping head and a convex shaft that cooperate with the limiting parts of the second and third segmented pipes, and the edge of the upper pipe diameter has a threaded groove that matches the limiting part.

[0005] Furthermore: the end of the push tube near the handle head is slidably fitted with a twisting disc, and the push tube and the clamping head have a T-shaped structure.

[0006] A further preferred embodiment: the limiting part of the second segmented tube includes an insertion part, the upper edge of which is formed with a notch groove that mates with the T-shaped end, and the insertion part protrudes to one side of the notch groove to form a threaded part.

[0007] A further preferred embodiment: the limiting part of the third segment pipe includes a locking disc part, the locking disc part is a Z-shaped pipe head, the outer Z-shaped end of the locking disc part protrudes to form a convex ring that mates with the threaded groove, and the inner Z-shaped end of the locking disc part forms a groove that axially engages with the convex shaft.

[0008] A further preferred embodiment: the blunt head is an L-shaped head end with passivation treatment on the outer end, the core of the sprue is a metal segment with bending toughness, and the blunt head is a hard metal segment.

[0009] A further preferred embodiment: the sliding end outer port of the first segmented tube, the second segmented tube and the third segmented tube is a tapered transition structure, and a hydrophilic coating is formed on the surface of the tapered part.

[0010] The beneficial effects of this utility model are: This segmented, malleable ventriculoperitoneal shunt strip, through its retractable and combinable tubular structure combined with a two-section advancing core and push tube, facilitates the adjustment of the extension and retraction positions of each tube segment during subcutaneous tunneling, based on the length requirements of each tube segment along a pre-set path. When each segment is retracted, its overall rigidity allows for normal insertion. Simultaneously, the extended, unused tube segments, combined with the high flexibility of the tube material, can be easily shaped and adjusted along the path, allowing for adjustments to the tube segment position according to the actual path conditions. This enhances the operability and practicality of the shunt strip. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal planar structure of the present invention; Figure 3 This is a schematic diagram of the combined structure of the sprue core and push tube of this utility model; Figure 4 This is a schematic diagram of the planar structure of the second and third segmented pipes of this utility model; Figure 5 This is a schematic diagram of the planar structure of the core and the third segment tube of this utility model; Figure 6 This is a schematic diagram of the planar structure of the core of the swivel bar according to this utility model; Figure 7 This is a schematic diagram of the insertion section of this utility model.

[0013] Figures 1-7 In the middle: 1. Tube disc, 2. Guide tube, 3. Handle head, 4. First segment tube, 5. Second segment tube, 6. Third segment tube, 7. Passive tube core, 8. Push tube, 9. Tube clamp head, 10. Insertion part, 11. Locking disc part, 12. Protruding shaft, 13. Blunt head, 14. Cut groove, 15. Threaded part. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-7 The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0015] A segmented, malleable ventriculoperitoneal shunt strip includes a tubular disc 1, with a catheter 2 extending from one end of the tubular disc 1, and a push tube 8 passing through the catheter 2. The other end of the tube coil 1 is fixed with a first segment tube 4, and the end of the first segment tube 4 is sequentially assembled with a second segment tube 5 and a third segment tube 6. The first segment tube 4, the second segment tube 5 and the third segment tube 6 are progressively arranged in multiple stages and each slides with the upper stage. A guide bar 7 is provided between the third segment tube 6 and the push tube 8. The guide bar 7 extends to the outer ends of the third segment tube 6 and the push tube 8 to form a blunt head 13 and a handle head 3, respectively. The second segment pipe 5 and the third segment pipe 6 have axial limiting parts formed at the sliding end with the upper part, and the push pipe 8 and the guide bar core 7 are respectively provided with a pipe clamping head 9 and a convex shaft 12 in cooperation with the limiting parts of the second segment pipe 5 and the third segment pipe 6, and the edge of the upper pipe diameter has a threaded groove that matches the limiting part. This shunt tube, based on the existing tube body and core combination structure, features a three-section telescopic structure. Each protruding section has a constricted end, and the sections can slide smoothly together to adjust the position of each segment during surgery; specifically, such as... Figure 2As shown, the first segment tube 4 is the first segment tube, which serves as the insertion end of the tube structure to the patient's drilling position. The operator can insert it by holding the tube tray 1, and the insertion length depends on the specific subcutaneous tunnel preset path. Second section pipe 5 Figure 2 As shown, the operator can push the tube 8 inward along the first segment tube 4 by holding it at the outer end. The tube 8 is mainly used to engage with the second segment tube 5 by the tube clamp 9 at the end of the tube and to engage with its limiting part. When the second segment tube 5 is pushed inward, the empty tube segment in the first segment tube 4 is extended simultaneously. This allows the operator to adjust the bending angle of the outer diameter of the first segment tube 4 slightly by changing the force applied when pushing the second segment tube 5, thus adjusting the direction of pushing the second segment tube 5 appropriately. This avoids the problem of the tube being pushed forward if the preset path is not smooth. The second segment tube 5 is the same as the third segment tube 6. Once the second segment tube 5 reaches the length required by the surgeon, the push tube 8 can be screwed along the axial direction to drive the limiting part of the second segment tube 5 into the threaded groove of the first segment tube 4, so as to fix the protruding position of the second segment tube 5 axially. The surgeon can then advance the manifold 7 by operating the handle head 3. The manifold 7 specifically abuts against the limiting part of the third segment tube 6 through the convex shaft 12. The advancement of the manifold 7 will drive the third segment tube 6 to advance synchronously. After reaching the designated position, the manifold 7 can be turned by operating the handle head 3 to use the convex shaft 12 end of the manifold 7 to drive the limiting part of the third segment tube 6 into the threaded groove of the second segment tube 5. At this time, the surgeon can fix the shunt catheter along the abdominal cavity opening to the blunt head 13, and by operating the other end of the handle head 3 to pull out the manifold 7, the shunt catheter can be moved along the tube path to the ventricular burr hole position. Then the entire tube is pulled out to complete the placement of the shunt catheter. Compared to traditional tube structures, this shunt tube structure features telescopic segments that allow surgeons to advance it step by step to fit pre-defined pathways such as behind the ear, neck, chest wall, and upper abdomen. The step-by-step advancement of the tube segments allows for easy intraoperative shaping through empty segments, making it easier for surgeons to maneuver the tube around obstructions and avoiding damage to tissue components in the subcutaneous tunnel. This also reduces the difficulty of the operation. Furthermore, the head end, with its layered contracting tube core 7 and the tube body wrapped around the head of the tube core 7, ensures the toughness of the advancement end, adapting to the feel of intraoperative operation. The relatively solid advancement structure of the tube core 7 and the push tube 9 structure that matches the tube diameter improves the control over the distal end of the advancement structure during operation, enhancing the practicality of this shunt tube. Furthermore, a twist disc is slidably fitted at one end of the push tube 8 near the handle head 3. The push tube 8 and the clamping head 9 have a T-shaped structure, and the twist disc serves as the outer operating end of the push tube 8, allowing the operator to perform the pushing operation. Figure 2 , 7As shown, the T-shaped stepped surface and the protruding end formed by the tube clamp head 9 are used to axially connect and match with the second segment tube 5, ensuring the stability of the connection structure and the axial control accuracy. Based on the above, the limiting part of the second segment tube 5 includes an insertion part 10. The upper edge of the insertion part 10 has a notch 14 that mates with the T-shaped end. A threaded part 15 protrudes from one side of the insertion part 10 relative to the notch 14. The limiting part of the second segment tube 5 is mainly composed of an integrally formed insertion part 10. When docking with the clamping head 9, the edge of the clamping head 9 mates with the notch 14, allowing for synchronous advancement through axial advancement of the clamping head 9 to abut against the notch 14. Furthermore, when the clamping head 9 rotates, the insertion part 10 can rotate axially through axial abutment against the notch. Figure 2 As shown, after the insertion tube 10 rotates axially for half a turn, it will be inserted into the threaded groove on the inner wall of the first segment tube 5 to limit the axial position of the first segment tube 4 and the second segment tube 5.

[0016] Furthermore, the limiting part of the third segment pipe 6 includes a locking disc part 11, which is a Z-shaped pipe head. The outer end of the Z-shaped locking disc part 11 protrudes to form a convex ring that mates with the threaded groove, and the inner end of the Z-shaped locking disc part 11 forms a retaining groove that axially engages with the convex shaft 12. Figure 5 , 6 As shown, the third segment tube 6 and the guide bar core 7 are matched and engaged by the slot of the convex shaft 12 and the locking disc part 11. When pushed, the axial movement of the guide bar core 7 and the convex shaft 12 can drive the third segment tube 6 to move forward, and when rotated, the convex shaft 12 can drive the third segment tube 6 to be engaged into the inner wall thread groove of the second segment tube 6.

[0017] Furthermore, the blunt head 13 is an L-shaped head end with a passivated outer end, and the core 7 is a flexible metal segment. The blunt head 13 is a hard metal segment. The blunt head 13 can be perforated at the side end so that the shunt can be fixed with sutures when fixed with the shunt canal. The blunt head 13 improves the smoothness of the head during advancement through the L-shaped sharp end of the hard metal, while the passivation treatment avoids damage to the subcutaneous tunnel tissue structure. The flexible segment of the core can allow the surgeon to adjust the bending angle of the core by matching the inner diameter of the third segment tube 6 when advancing the core 7, so as to shape and adjust the empty diameter of the third segment tube 6. This ensures the surgeon's feel when advancing the core 7, while allowing the surgeon to adjust the advancement angle and improve the compatibility between the shunt and the pre-set path of the subcutaneous tunnel.

[0018] Furthermore, such as Figure 1 , 2As shown, the sliding end outer port of the first segment tube 4, the second segment tube 5 and the third segment tube 6 is a tapered transition structure, and a hydrophilic coating is formed on the surface of the tapered part. The telescopic tube section connection end after the tapering treatment serves as a transition contact surface between the surface structure of the tube body and the subcutaneous tunnel tissue structure when the tube body is advanced, so as to avoid the damage to the tissue structure by the edge of the stepped surface at the telescopic position during the deepening process.

[0019] During the procedure, the first segment tube 4 is inserted into the ventricle along the patient's puncture site. The surgeon can insert it by holding the tube tray 1. The insertion length depends on the specific subcutaneous tunnel preset path. Subsequently, the surgeon can push the push tube 8 inward along the first segment tube 4 by holding the push tube 8 at the outer end. The main purpose is to use the tube clamp 9 at the end of the push tube 8 to connect and match with the incision groove 14 of the second segment tube 5, so as to push the tube clamp 9 axially to abut against the incision groove 14 for synchronous advancement. As the second segment tube 5 is pushed inward, the empty segment in the first segment tube 4 is extended simultaneously. The operator can adjust the force application position of the end push head by changing the push force application method, thereby slightly adjusting the bending angle of the outer diameter of the first segment tube 4, that is, appropriately adjusting the push direction of the second segment tube 5, so as to avoid the preset path being blocked and causing trouble for the tube body push. The second segment tube 5 is the same as the third segment tube 6. Once the second segment tube 5 reaches the length required by the surgeon, the push tube 8 can be screwed along the axial direction, and the insertion part 10 can be rotated axially by the axial contact with the incision groove when the tube clamping head 9 is rotated. After the insertion part 10 rotates axially for half a turn, it will be inserted into the threaded groove on the inner wall of the first segment tube 5 to limit the axial position of the first segment tube 4 and the second segment tube 5. The surgeon can then advance the manifold core 7 by operating the handle head 3. The manifold core 7 specifically abuts against the locking disc part 11 of the third segment tube 6 through the convex shaft 12. The advancement of the manifold core 7 will drive the third segment tube 6 to advance synchronously. After reaching the designated position, the manifold core 7 can be turned by operating the handle head 3 to use the convex shaft 12 end of the manifold core 7 to drive the limiting part of the third segment tube 6 into the threaded groove of the second segment tube 5. At this time, the surgeon can fix the shunt catheter along the abdominal cavity opening with sutures at the blunt head 13 perforation point, and then use the other end of the handle head 3 to pull out the manifold core 7 to drive the shunt catheter along the tube path to the ventricular drilling position. Then, the entire tube is pulled out to complete the placement of the shunt catheter.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A segmented, malleable ventriculoperitoneal shunt strip, characterized in that: It includes a tube coil (1), one end of which extends to form a conduit (2), and a push tube (8) is provided through the conduit (2). The other end of the tube coil (1) is fixed with a first segment tube (4), and the end of the first segment tube (4) is sequentially assembled with a second segment tube (5) and a third segment tube (6). The first segment tube (4), the second segment tube (5) and the third segment tube (6) are progressively arranged in multiple stages and each slides with the upper stage. The first segment tube (4), the second segment tube (5) and the third segment tube (6) are tantalum tubes. A through-hole core (7) is provided between the third segment tube (6) and the push tube (8). The through-hole core (7) extends to the outer end of the third segment tube (6) and the push tube (8) to form a blunt head (13) and a handle head (3). The second segmented pipe (5) and the third segmented pipe (6) have axial limiting parts at the sliding end with the upper part, and the push pipe (8) and the guide bar core (7) are respectively equipped with a pipe clamping head (9) and a convex shaft (12) in cooperation with the limiting parts of the second segmented pipe (5) and the third segmented pipe (6), and the edge of the upper pipe diameter has a threaded groove that matches the limiting part.

2. The segmented, malleable ventriculoperitoneal shunt strip according to claim 1, characterized in that: The push tube (8) has a slidable twist plate at one end near the handle head (3), and the push tube (8) and the clamp head (9) are T-shaped structures.

3. The segmented, malleable ventriculoperitoneal shunt strip according to claim 1, characterized in that: The limiting part of the second segmented tube (5) includes an insertion part (10), the upper edge of which is formed with a notch (14) that mates with the T-shaped end, and the insertion part (10) protrudes from one side of the notch (14) to form a threaded part (15).

4. The segmented, malleable ventriculoperitoneal shunt strip according to claim 1, characterized in that: The limiting part of the third segment pipe (6) includes a locking disc part (11), which is a Z-shaped pipe head. The outer end of the Z-shaped locking disc part (11) protrudes to form a convex ring that mates with the threaded groove, and the inner end of the Z-shaped locking disc part (11) forms a groove that axially engages with the convex shaft (12).

5. A segmented, malleable ventriculoperitoneal shunt strip according to claim 1, characterized in that: The blunt head (13) is an L-shaped head end with passivation treatment on the outer end, the core (7) is a metal segment with bending toughness, and the blunt head (13) is a hard metal segment.

6. The segmented, malleable ventriculoperitoneal shunt strip according to claim 1, characterized in that: The sliding end outer ports of the first segmented tube (4), the second segmented tube (5) and the third segmented tube (6) are tapered transition structures, and a hydrophilic coating is formed on the surface of the tapered part.

Images