Dilator for single-port laparoscope

Abstract

The utility model relates to the technical field of medical instruments, and discloses a dilator for a single-port laparoscope, which comprises two arc-shaped dilation cards and a lead-in port formed by the two arc-shaped dilation cards which are mutually closed, and the tops of the outer walls of the arc-shaped dilation cards are fixedly connected with arc-shaped protective ring bodies. The outer walls of the two ends of the arc-shaped protection ring body are symmetrically and fixedly connected with fixing blocks, the outer walls of the two ends of the arc-shaped protection ring body are symmetrically provided with second moving grooves, and the outer walls of the two ends of the arc-shaped protection ring body are provided with moving expansion mechanisms used for adjusting the sizes of the guide-in ports. The size of a guide-in opening can be flexibly adjusted according to the actual situation of a notch, after the size is adjusted, a limiting insertion rod is inserted into a first insertion hole till being inserted into a second insertion hole, a two-way threaded rotating shaft can be conveniently limited, an arc-shaped expansion clamping piece can be conveniently fixed, stability is good, operation is convenient, and practicability is high. And the flexibility and practicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a dilator for a single-hole laparoscope. Background Art

[0002] In clinical surgery, an incision expander (also called an incision protection sleeve) was invented. It consists of a double trumpet-shaped clasp and a pipe connecting the clasp, and the clasp and the pipe are both made of elastic material. When in use, the two clasps are placed on the inner and outer sides of the incision respectively, and the surgical instruments enter the body through the clasp and the pipe for surgical operation. It has two functions: one is to expand the incision to facilitate the entry of surgical instruments through the incision for operation; the other is to prevent the surgical instruments from entering and further damaging the incision tissue during operation, while reducing the infection of the exposed incision.

[0003] In the prior art, CN213883339U discloses a laparoscopic incision dilator, which includes an upper shell, a protective ring body is provided at the edge of the upper shell, and the bottom of the protective ring body is provided with a ring body embedding groove and a rubber strip embedding groove in sequence from the inside to the outside; a liquid absorbing ring body embedded in the ring body embedding groove; an anti-skid rubber strip embedded in the rubber strip embedding groove; a lower clamping ring arranged below the upper shell; an elastic film arranged between the upper shell and the lower clamping ring, and a protective boss is provided on the surface of the elastic film. The utility model prevents the upper shell and the skin from sliding directly and arbitrarily by arranging an anti-skid rubber strip below the upper shell, and has good stability. The liquid absorbing ring body and the protective boss of hydrogel material are provided to absorb liquid at the tissue and prevent liquid reflux. At the same time, the upper shell and the protective boss can protect the incision and prevent secondary damage to the incision.

[0004] In the prior art, during laparoscopic surgery, an incision needs to be made in the abdominal cavity. Since the sizes of abdominal incisions vary, the existing laparoscopic dilator has a fixed size of clamping ring, which makes the diameter of the introduction port fixed. This cannot meet the needs of different incision sizes, has low applicability, and reduces the flexibility and practicality of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a dilator for a single-port laparoscope to solve the problem that the existing dilator for laparoscopy proposed in the above background technology has a fixed size of the clamping ring, so that the diameter of the introduction port is fixed, which cannot meet the use of different incision sizes, has low applicability, and reduces the flexibility and practicality of the device.

[0006] The utility model provides the following technical solution: a dilator for a single-port laparoscope, comprising two arc-shaped expansion cards and an introduction port formed by the two arc-shaped expansion cards closing each other, the top of the outer wall of the arc-shaped expansion card is fixedly connected to an arc-shaped protective ring body, the outer walls at both ends of the arc-shaped protective ring body are symmetrically fixedly connected to fixed blocks, the outer walls at both ends of the arc-shaped protective ring body are symmetrically provided with second movable grooves, the outer walls at both ends of the arc-shaped protective ring body are provided with movable expansion mechanisms for adjusting the size of the introduction port, and the outer walls of the arc-shaped expansion card are fixedly connected to protective convex rings.

[0007] By adopting the above scheme, the arc-shaped protective ring and the protective convex ring can protect the incision to prevent secondary damage to the incision. Then, the movable expansion mechanism can be used to drive the two arc-shaped expansion cards away from each other, so that the size of the introduction port can be flexibly adjusted according to the size of the base incision.

[0008] Furthermore, the movable expansion mechanism includes a fixed plate, a first movable groove is opened on the top of the fixed plate, a rotating plate is arranged on one side of the fixed plate, a bidirectional threaded shaft is fixedly connected to the side of the rotating plate close to the fixed plate, both ends of the bidirectional threaded shaft are threadedly connected to the first movable block, and the top of the first movable block is fixedly connected to the bottom of the fixed block.

[0009] By adopting the above scheme, by rotating the rotating plate, the rotating plate drives the bidirectional threaded shaft to rotate, and the bidirectional threaded shaft drives the two groups to move relative to each other, drives the fixed block to move relative to both sides, thereby driving the two groups of arc-shaped protective ring bodies to move relative to both sides, and then driving the two groups of arc-shaped expansion cards to move relative to both sides, so as to flexibly adjust the size of the introduction port.

[0010] Furthermore, the bidirectional threaded shaft passes through the fixed plate and extends to the interior of the fixed plate, and one end of the bidirectional threaded shaft away from the rotating plate is connected to the fixed plate bearing.

[0011] With the above solution, the bidirectional threaded shaft is installed inside, so that the relative movement of the two groups is more stable.

[0012] Furthermore, a plurality of second sockets evenly and equidistantly distributed are provided on one side of the fixed plate close to the rotating plate, a first socket is provided on one side of the rotating plate, a limit rod for limiting the bidirectional threaded shaft is provided on the inner wall of the first socket, and the limit rod passes through the first socket and extends to the interior of the second socket.

[0013] By adopting the above scheme, the limiting rod is inserted into the first insertion hole until it is inserted into the second insertion hole, so as to limit the rotating plate and prevent it from rotating, thereby facilitating the limiting effect on the bidirectional threaded shaft.

[0014] Furthermore, the diameters of the first plug hole and the second plug hole are the same, the first plug hole is adapted to the limiting plug rod, and the second plug hole is adapted to the limiting plug rod.

[0015] By adopting the above scheme, the limiting plug rod is provided to facilitate the limiting and fixing of the bidirectional threaded shaft.

[0016] Furthermore, the fixed plate is symmetrically fixedly connected with second moving blocks at both ends of one side close to the arc-shaped protective ring body, the second moving block and the second moving groove form a sliding connection structure, and the upper and lower ends of the second moving block are symmetrically fixedly connected with sliding blocks.

[0017] By adopting the above solution, the arc-shaped expansion card can be driven to move by sliding the second moving block in the second moving groove.

[0018] Furthermore, sliding grooves are symmetrically provided at the upper and lower ends of the second movable groove, the sliding groove is connected with the second movable groove, and the sliding block and the sliding groove form a sliding connection structure.

[0019] By adopting the above solution, the sliding block is arranged to move along the sliding groove, so that the movement of the second moving block is more stable, thereby facilitating the flexible adjustment of the size of the introduction port.

[0020] Furthermore, the outer diameter of the arc-shaped expansion card is gradually narrowed from top to bottom, and the material of the protective convex ring is hydrogel.

[0021] With the above solution, the material of the protective convex ring is hydrogel, which is convenient for protecting the incision.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The utility model is provided with a movable expansion mechanism. When using the device, first according to the size of the incision, by rotating the rotating plate, the rotating plate drives the two-way threaded shaft to rotate, the two-way threaded shaft drives the two groups of first moving blocks to move relatively, the first moving block drives the fixed block to move relatively to both sides, so as to drive the two arc-shaped expansion cards to move relatively to both sides, so as to flexibly adjust the size of the introduction port according to the actual situation of the incision. After the size is adjusted, by inserting the limiting plug rod into the first plug hole until it is inserted into the second plug hole, it is convenient to limit the two-way threaded shaft and fix the arc-shaped expansion card. The utility model has good stability and convenient operation, which is conducive to improving the flexibility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a dilator for single-port laparoscope;

[0025] Figure 2A schematic diagram of the expansion structure of a dilator for a single-port laparoscope;

[0026] Figure 3 It is a schematic diagram of the enlarged cross-section structure of an arc-shaped protective ring body of a dilator for a single-port laparoscope;

[0027] Figure 4 It is a schematic diagram of the structure of a dilator moving dilator mechanism for a single-port laparoscope;

[0028] Figure 5 for Figure 4 A is an enlarged structural diagram of FIG.

[0029] In the figure, 1. arc expansion card; 2. arc protection ring body; 3. protection convex ring; 4. movable expansion mechanism; 41. fixed plate; 42. first movable groove; 43. bidirectional threaded shaft; 44. first movable block; 45. limit rod; 46. rotating plate; 47. first plug hole; 48. second plug hole; 5. fixed block; 6. introduction port; 7. second movable groove; 8. sliding groove; 9. second movable block; 10. sliding block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] like Figure 1-2 As shown, the utility model provides a technical solution, a dilator for a single-port laparoscope, comprising two arc-shaped dilating cards 1 and an introduction port 6 formed by the two arc-shaped dilating cards 1 closing each other, the outer diameter of the arc-shaped dilating card 1 gradually narrows from top to bottom, the top of the outer wall of the arc-shaped dilating card 1 is fixedly connected with an arc-shaped protective ring body 2, the outer walls at both ends of the arc-shaped protective ring body 2 are symmetrically fixedly connected with fixed blocks 5, the outer walls at both ends of the arc-shaped protective ring body 2 are symmetrically provided with second movable grooves 7, the outer walls at both ends of the arc-shaped protective ring body 2 are provided with movable dilating mechanisms 4 for adjusting the size of the introduction port 6, the outer wall of the arc-shaped dilating card 1 is fixedly connected with a protective convex ring 3, the material of the protective convex ring 3 is hydrogel, the arc-shaped protective ring body 2 and the protective convex ring 3 can protect the incision and prevent secondary damage at the incision, and then the movable dilating mechanism 4 is provided to facilitate the two arc-shaped dilating cards 1 to move away from each other, so as to facilitate the flexible adjustment of the size of the introduction port 6 according to the size of the basic incision.

[0032] As an implementation method in this embodiment, Figure 3-5As shown, the movable expansion mechanism 4 includes a fixed plate 41, a first movable groove 42 is provided on the top of the fixed plate 41, a rotating plate 46 is provided on one side of the fixed plate 41, a bidirectional threaded shaft 43 is fixedly connected to the side of the rotating plate 46 close to the fixed plate 41, both ends of the bidirectional threaded shaft 43 are threadedly connected to the first movable block 44, the top of the first movable block 44 is fixedly connected to the bottom of the fixed block 5, the bidirectional threaded shaft 43 passes through the fixed plate 41 and extends to the inside of the first movable groove 42, one end of the bidirectional threaded shaft 43 away from the rotating plate 46 is connected to the bearing of the fixed plate 41, a plurality of second plug holes 48 evenly and equidistantly distributed are provided on the side of the fixed plate 41 close to the rotating plate 46, a first plug hole 47 is provided on one side of the rotating plate 46, a limiting plug rod 45 for limiting the position of the bidirectional threaded shaft 43 is provided on the inner wall of the first plug hole 47, and the limiting plug rod 45 passes through the first plug hole 47 and extends Extending to the inside of the second insertion hole 48, the diameters of the first insertion hole 47 and the second insertion hole 48 are the same, the first insertion hole 47 is adapted to the limiting plug rod 45, and the second insertion hole 48 is adapted to the limiting plug rod 45. By rotating the rotating plate 46, the rotating plate 46 drives the bidirectional threaded shaft 43 to rotate, and the bidirectional threaded shaft 43 drives the two groups of first moving blocks 44 to move relatively, and the first moving block 44 drives the fixed block 5 to move relatively toward both sides, thereby driving the two groups of arc-shaped protection ring bodies 2 to move relatively toward both sides, and then it is convenient to drive the two groups of arc-shaped expansion cards 1 to move relatively toward both sides, so as to facilitate flexible adjustment of the size of the introduction port 6, and then by inserting the limiting plug rod 45 into the first insertion hole 47 until it is inserted into the second insertion hole 48, it is convenient to limit the rotating plate 46 to prevent it from rotating, so as to limit the bidirectional threaded shaft 43 and fix the arc-shaped expansion card 1.

[0033] As an implementation method in this embodiment, Figure 5 As shown, the fixed plate 41 is symmetrically fixedly connected with the second moving block 9 at both ends of one side close to the arc-shaped protective ring body 2, and the second moving block 9 and the second moving groove 7 form a sliding connection structure. The upper and lower ends of the second moving block 9 are symmetrically fixedly connected with sliding blocks 10. The upper and lower ends of the second moving groove 7 are symmetrically provided with sliding grooves 8, and the sliding grooves 8 are connected with the second moving groove 7. The sliding block 10 and the sliding groove 8 form a sliding connection structure. The sliding of the second moving block 9 in the second moving groove 7 facilitates the movement of the arc-shaped expansion card 1. The movement of the sliding block 10 along the sliding groove 8 makes the movement of the second moving block 9 smoother, thereby facilitating the flexible adjustment of the size of the introduction port 6.

[0034] Working principle: when using the device, first according to the size of the incision, by rotating the rotating plate 46, the rotating plate 46 drives the bidirectional threaded shaft 43 to rotate, the bidirectional threaded shaft 43 drives the two groups of first moving blocks 44 to move relatively, the first moving block 44 drives the fixed block 5 to move relatively to both sides, the fixed block 5 drives the arc protection ring body 2 to move relatively to both sides, so that the second moving block 9 moves to both sides along the second moving groove 7, and the sliding block 10 moves to both sides along the sliding groove 8, so that the arc protection ring body 2 moves relatively to both sides more smoothly, thereby facilitating the two arc expansion cards 1 to move relatively to both sides, and facilitating the flexible adjustment of the size of the introduction port 6 according to the actual situation of the incision. After the size is adjusted, by inserting the limiting plug 45 into the first plug hole 47 until it is inserted into the second plug hole 48, it is convenient to limit the rotating plate 46 to prevent it from rotating, so as to limit the bidirectional threaded shaft 43, and to fix the arc expansion card 1, with good stability, so as to improve the flexibility and practicality of the device.

[0035] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A dilator for a single-port laparoscope, comprising two arc-shaped dilating cards and an introduction port formed by the two arc-shaped dilating cards being closed to each other, wherein the top of the outer wall of the arc-shaped dilating card is fixedly connected to an arc-shaped protective ring body, Features: The outer walls at both ends of the arc-shaped protective ring body are symmetrically fixedly connected with fixed blocks, the outer walls at both ends of the arc-shaped protective ring body are symmetrically provided with second movable grooves, the outer walls at both ends of the arc-shaped protective ring body are provided with movable expansion mechanisms for adjusting the size of the introduction port, and the outer wall of the arc-shaped expansion card is fixedly connected with a protective convex ring.

2. A single-port laparoscope dilator according to claim 1, Features: The movable expansion mechanism includes a fixed plate, a first movable groove is opened on the top of the fixed plate, a rotating plate is arranged on one side of the fixed plate, a bidirectional threaded shaft is fixedly connected to the side of the rotating plate close to the fixed plate, both ends of the bidirectional threaded shaft are threadedly connected to the first movable block, and the top of the first movable block is fixedly connected to the bottom of the fixed block.

3. A single-port laparoscope dilator according to claim 2, Features: The bidirectional threaded shaft passes through the fixed plate and extends to the interior of the first movable groove. One end of the bidirectional threaded shaft away from the rotating plate is connected to the fixed plate bearing.

4. A single-port laparoscope dilator according to claim 2, Features: A plurality of second insertion holes evenly and equidistantly distributed are provided on one side of the fixed plate close to the rotating plate, a first insertion hole is provided on one side of the rotating plate, a limiting rod for limiting the bidirectional threaded shaft is provided on the inner wall of the first insertion hole, and the limiting rod passes through the first insertion hole and extends to the inside of the second insertion hole.

5. A single-port laparoscope dilator according to claim 4, Features: The diameters of the first plug hole and the second plug hole are the same. The first plug hole is matched with the limiting plug rod, and the second plug hole is matched with the limiting plug rod.

6. A single-port laparoscope dilator according to claim 2, Features: The two ends of the fixed plate on one side close to the arc-shaped protective ring body are symmetrically fixedly connected with second moving blocks, the second moving block and the second moving groove form a sliding connection structure, and the upper and lower ends of the second moving block are symmetrically fixedly connected with sliding blocks.

7. A single-port laparoscope dilator according to claim 6, Features: The second movable groove is symmetrically provided with sliding grooves at the upper and lower ends thereof. The sliding groove is communicated with the second movable groove, and the sliding block and the sliding groove form a sliding connection structure.

8. The single-port laparoscope dilator according to claim 1, Features: The outer diameter of the arc-shaped expansion card is gradually narrowed from top to bottom, and the material of the protective convex ring is hydrogel.

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