Abdominal dilator used under laparoscope

Abstract

The utility model belongs to the technical field of medical instruments, in particular to an abdominal dilator used under a laparoscope, which comprises an outer tube, a middle tube and a puncture core, a fixing seat is integrally arranged at the bottom of the outer tube, an inner tube is slidably mounted in the middle tube, three groups of dilation blades are arranged on the outer side of the upper portion of the middle tube, and a connecting plate is arranged between the inner tube and the dilation blades. A plurality of sets of threaded holes are formed in the lower portion of the inner pipe, fixing pieces are integrally arranged on the two sides of the fixing base respectively, and small round holes are formed in the centers of the two sets of fixing pieces respectively. The middle pipe is rotated according to the screw rod principle to drive the inner pipe and the expansion blades to rotate into the front end of the outer pipe, the middle pipe can be limited through the limiting ring to prevent the middle pipe from being screwed into the abdominal cavity, then the inner pipe is pulled back to drive the connecting plate to move, the expansion blades are expanded, the abdominal wall is raised, and the internal space of the abdominal cavity is expanded; the operation space is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an abdominal cavity dilator used under laparoscope. Background Art

[0002] Laparoscopic surgery is a newly developed minimally invasive procedure, and its widespread clinical application is an inevitable trend in the future of surgical methods. With the rapid advancement of industrial manufacturing technology and the integration of related disciplines, a solid foundation has been laid for the development of new technologies and methods. Coupled with the increasing sophistication of surgeons, many open surgeries have been replaced by endoscopic procedures, greatly expanding surgical options.

[0003] The existing technology has the following shortcomings:

[0004] Currently, most laparoscopic abdominal cavity expansion techniques use CO2 to enter the abdominal cavity to expand the intra-abdominal space, which increases the risk of hypercapnia, especially in children. Long-term blood and gas circulation affects the intraoperative anesthesia risk and postoperative recovery process. Utility Model Content

[0005] In view of the deficiencies of the prior art, the present invention provides a laparoscopic abdominal cavity dilator to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a laparoscopic abdominal dilator, comprising an outer tube, a middle tube, and a puncture core, wherein the bottom of the outer tube is integrally provided with a fixing seat, the inner tube is slidably mounted inside the middle tube, three groups of dilation blades are provided on the upper outer side of the middle tube, a connecting plate is provided between the inner tube and the dilation blades, and a plurality of groups of threaded holes are provided at the lower position of the inner tube;

[0007] The middle tube is convex, and multiple sets of symmetrically arranged fixing blocks are integrated on the upper outer side of the middle tube. The bottom sides of the expansion blades are rotatably mounted between the two sets of fixing blocks.

[0008] A thread is provided at the lower position of the outer surface of the middle tube, a thread groove adapted to the middle tube is provided inside the outer tube, and a limiting ring is integrally formed at the bottom of the middle tube;

[0009] Both ends of the connecting plate are fixedly mounted with connecting rods, and the two ends of the connecting plate are rotatably mounted inside the connecting groove and the connecting block respectively through the connecting rods;

[0010] Threaded rods matching the threaded holes are threadedly mounted on both sides of the limiting ring.

[0011] As a preferred technical solution of the present invention, fixing plates are integrated on both sides of the fixing seat, and small circular holes are opened at the centers of the two groups of fixing plates.

[0012] As an optimal technical solution of the present invention, the inner tube is made of transparent material, and a connecting ring is integrated on the inner tube. A connecting groove is provided on the outer side of the connecting ring corresponding to the position of the expansion blade, and a concave connecting block is fixedly installed inside the expansion blade.

[0013] As a preferred technical solution of the present invention, the expansion blades can be made of one of medical polymer materials and stainless steel sheets, and gaps are left after the expansion blades are closed.

[0014] As a preferred technical solution of the present invention, the diameter of the puncture core is the same as the inner diameter of the thread of the outer tube, and the top of the puncture core is configured in a cone-shaped shape.

[0015] Compared with the prior art, the present invention provides a laparoscopic abdominal dilator with the following beneficial effects:

[0016] 1. This abdominal dilator used under laparoscopy is equipped with expansion blades. By placing the middle tube inside the outer tube, the middle tube is rotated by the screw principle to drive the inner tube and the expansion blades to rotate into the front end of the outer tube. The middle tube can be limited by the limit ring to prevent the middle tube from rotating into the abdominal cavity. Then the inner tube is pulled back to drive the connecting plate to move, so that the expansion blades expand, thereby making the abdominal wall bulge, expanding the internal space of the abdominal cavity, and facilitating the surgical operation space.

[0017] 2. This abdominal dilator used under laparoscopy uses medical polymer materials or stainless steel sheets to increase the lubricity of the instrument through the expansion blades, and leaves a gap after closing to prevent the omentum or intestinal wall from being clamped before closing and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the outer tube of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the middle tube and the inner tube of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view of the connection structure between the middle tube and the inner tube of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the expander of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the outer tube and the puncture core connected to the utility model;

[0023] Figure 6 For this utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0024] In the figure: 1. Outer tube; 101. Fixing seat; 102. Fixing plate; 103. Small round hole; 2. Middle tube; 201. Fixing block; 3. Inner tube; 301. Connecting ring; 302. Connecting groove; 303. Threaded hole; 4. Expansion blade; 401. Connecting block; 5. Connecting plate; 501. Connecting rod; 6. Piercing core; 7. Limiting ring; 701. Threaded rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 In this embodiment: a abdominal dilator used under laparoscopy includes an outer tube 1, a middle tube 2 and a puncture core 6. The bottom of the outer tube 1 is integrated with a fixing seat 101, the inner tube 3 is slidably installed inside the middle tube 2, and three groups of expansion blades 4 are provided on the upper outer side of the middle tube 2. A connecting plate 5 is provided between the inner tube 3 and the expansion blades 4, and a plurality of groups of threaded holes 303 are opened at the lower position of the inner tube 3.

[0027] In this embodiment, fixing plates 102 are integrally formed on both sides of the fixing base 101 , and small circular holes 103 are formed at the centers of the two sets of fixing plates 102 .

[0028] In this embodiment, the middle tube 2 is convex, and multiple groups of symmetrically arranged fixing blocks 201 are integrated on the upper outer side of the middle tube 2. The bottom sides of the expansion blades 4 are rotatably installed between the two groups of fixing blocks 201.

[0029] In this embodiment, a thread is provided at the lower position of the outer surface of the middle tube 2, a thread groove is provided inside the outer tube 1 that is compatible with the middle tube 2, and a limiting ring 7 is integrally formed at the bottom of the middle tube 2. The limiting ring 7 can limit the middle tube 2 to prevent the middle tube 2 from being screwed into the abdominal cavity.

[0030] In this embodiment, the inner tube 3 is made of transparent material and is integrally provided with a connecting ring 301. A connecting groove 302 is provided on the outer side of the connecting ring 301 corresponding to the position of the expansion blade 4. A concave connecting block 401 is fixedly installed inside the expansion blade 4.

[0031] In this embodiment, connecting rods 501 are fixedly installed at both ends of the connecting plate 5, and the two ends of the connecting plate 5 are rotatably installed inside the connecting groove 302 and the connecting block 401 through the connecting rods 501. When the expansion blades 4 are at the front end of the outer tube 1, the inner tube 3 is pulled back to drive the connecting plate 5 to move, so that the expansion blades 4 are expanded, thereby causing the abdominal wall to bulge and the internal space of the abdominal cavity to expand. Then, a laparoscope is placed in the inner tube 3 to continue the surgical operation. After the operation is completed, the inner tube 3 is pushed toward the abdominal cavity to drive the expansion blades 4 to close through the connecting plate 5, and the abdominal cavity space is reduced.

[0032] In this embodiment, threaded rods 701 that are compatible with the threaded holes 303 are threadedly installed on both sides of the limiting ring 7. After the expansion blades 4 are expanded, the threaded rods 701 are rotated to move into the threaded holes 303, thereby fixing and limiting the inner tube 3.

[0033] In this embodiment, the expansion blades 4 can be made of one of medical polymer materials and stainless steel sheets, and a gap is left after the expansion blades 4 are closed. The expansion blades 4 use medical polymer materials or stainless steel sheets to increase the lubricity of the instrument, and leave a gap after closing to prevent the omentum or intestinal wall from being clamped before closing and removal.

[0034] In this embodiment, the diameter of the puncture core 6 is the same as the inner diameter of the thread of the outer tube 1, and the top of the puncture core 6 is set in a cone-shaped shape. When in use, the puncture core 6 is inserted into the interior of the outer tube 1 and punctured into the abdominal cavity, and then the puncture core 6 is withdrawn.

[0035] The working principle and usage process of the present invention are as follows: when in use, the puncture core 6 is inserted into the interior of the outer tube 1 and punctured into the abdominal cavity, and then the puncture core 6 is withdrawn, and the middle tube 2 is placed inside the outer tube 1, and the middle tube 2 is rotated by the screw principle to drive the inner tube 3 and the expansion blades 4 to rotate into the front end of the outer tube 1, and the middle tube 2 can be limited by the limiting ring 7, and then the inner tube 3 is pulled back to drive the connecting plate 5 to move, so that the expansion blades 4 are expanded, thereby making the abdominal wall bulge and the internal space of the abdominal cavity expand. After expansion, the threaded rod 701 is moved to the inside of the threaded hole 303 to fix and limit the inner tube 3, and then the laparoscope is placed in the inner tube 3 to continue the surgical operation.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A laparoscopic abdominal dilator, comprising an outer tube (1), a middle tube (2) and a puncture core (6), characterized in that: The bottom of the outer tube (1) is integrally provided with a fixing seat (101); the inner tube (3) is slidably mounted inside the middle tube (2); three groups of expansion blades (4) are provided on the upper outer side of the middle tube (2); a connecting plate (5) is provided between the inner tube (3) and the expansion blades (4); and a plurality of groups of threaded holes (303) are provided at the lower position of the inner tube (3); The middle tube (2) is convexly arranged, and multiple groups of symmetrically arranged fixing blocks (201) are integrally provided on the upper outer side of the middle tube (2), and both sides of the bottom of the expansion blade (4) are rotatably mounted between the two groups of fixing blocks (201); A thread is provided at the lower portion of the outer surface of the middle tube (2); a thread groove adapted to the middle tube (2) is provided inside the outer tube (1); and a limiting ring (7) is integrally formed at the bottom of the middle tube (2); Connecting rods (501) are fixedly mounted on both ends of the connecting plate (5), and the two ends of the connecting plate (5) are rotatably mounted inside the connecting groove (302) and the connecting block (401) respectively through the connecting rods (501); Threaded rods (701) that match the threaded holes (303) are threadedly mounted on both sides of the limiting ring (7).

2. The abdominal cavity dilator for laparoscopic use according to claim 1, characterized in that: Both sides of the fixing seat (101) are integrally provided with fixing plates (102), and the centers of the two groups of fixing plates (102) are each provided with a small circular hole (103).

3. The abdominal cavity dilator for laparoscopic use according to claim 1, characterized in that: The inner tube (3) is made of a transparent material, and a connecting ring (301) is integrally provided on the inner tube (3). A connecting groove (302) is provided on the outer side of the connecting ring (301) at a position corresponding to the expansion blade (4), and a concave connecting block (401) is fixedly installed inside the expansion blade (4).

4. The abdominal cavity dilator for laparoscopic use according to claim 1, characterized in that: The expansion blades (4) can be made of one of a medical polymer material and a stainless steel sheet, and a gap is left after the expansion blades (4) are closed.

5. The abdominal cavity dilator for laparoscopic use according to claim 1, characterized in that: The diameter of the puncture core (6) is the same as the inner diameter of the thread of the outer tube (1), and the top of the puncture core (6) is arranged in a cone-shaped shape.

Images