An integrated laparoscopic trocar limiting device

Abstract

The utility model relates to a kind of integrated laparoscope trocar limiting device, comprising: integrated hollow disc main body, lateral is equipped with opening, for embedding laparoscope trocar;Short cylindrical fixed groove, set in the integrated hollow disc main body top, inside is equipped with thread structure to increase the friction with trocar;Surface groove, located the outer surface of the integrated hollow disc main body, for by suture knot reinforcement device;Bottom disc contact surface, is equipped with medical adhesive layer, for sticking skin to prevent trocar sliding.Compared with prior art, the utility model has the advantages of wide clinical application range, the risk of falling caused by the assembly of multiple components is eliminated by integrated structure, the production cost is reduced, the structural stability is improved, the friction is improved, the suture displacement during operation is avoided, and multiple size adaptation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical endoscope technology, and in particular to an integrated laparoscopic cannula needle limiting device. Background Technology

[0002] Since Philippe Mouret first performed a laparoscopic cholecystectomy in 1987, laparoscopic surgery has revolutionized surgical procedures. Level 1 evidence demonstrates that laparoscopic surgery is superior to open surgery, and it has become the preferred method for almost all thoracic and abdominal surgeries, with hundreds of thousands of related scientific articles published. Today, laparoscopic surgery is the mainstream choice in various surgical fields.

[0003] Laparoscopic surgery requires the use of a hollow, inflatable cannula inserted into the body's cavities to expand the space and insert surgical instruments. Currently, the commonly used cannulas are straight-tube shaped, facilitating puncture and instrument insertion. However, existing laparoscopic cannulas have certain drawbacks: they are not easily fixed during use and can easily slip into deeper cavities or out of the body during surgery, posing risks to surgical safety and increasing the difficulty and time of the procedure. Improving this through the addition of external fixation devices is one of the urgent problems that needs to be addressed in laparoscopic surgery.

[0004] Patent CN202321885106.5 discloses a laparoscopic cannula positioning device, including a positioning plate. Suction cups are installed at the four corners of the bottom of the positioning plate, and a connecting membrane is installed along the central edge of the positioning plate. A groove is formed in the center of the center of the groove, with a first notch at the bottom center. A convex plate is installed above the groove, and a positioning ring is installed at the center of the top of the convex plate. A diaphragm is connected to the center of the positioning ring, and a second notch is formed at the bottom of the convex plate. Medical adhesive is connected to the hollow spaces between the first and second notches. This device, by using suction cups, a positioning ring, a diaphragm, and medical adhesive, can fix the laparoscopic puncture needle to the abdominal skin during use, preventing the puncture needle from shifting due to resistance. By incorporating the connecting membrane in the positioning plate, the shape of the positioning plate can be adjusted by the expansion and contraction of the connecting membrane, allowing the positioning plate to form a certain arc. This enables the device to be more stably fixed to the uneven abdominal skin of the patient, thus achieving more stable fixation of the puncture needle. However, this device has a relatively complex structure, high production costs, and requires training to use effectively. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide an integrated laparoscopic cannula needle limiting device. It has a wide range of clinical applications. The integrated structure eliminates the risk of detachment caused by the assembly of multiple parts, reduces production costs, and improves structural stability. It also increases friction to avoid suture displacement during surgery and is compatible with multiple sizes.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The inventors have now optimized the patent, proposing a simple laparoscopic cannula positioning device that is easy to commercially manufacture and clinically use. This device has the advantages of low manufacturing difficulty, simple use, and easy promotion, and can be rapidly translated and applied in clinical practice.

[0008] This utility model provides an integrated laparoscopic cannula needle limiting device, comprising:

[0009] The main body is a hollow disc with an opening on the side for inserting a laparoscopic cannula.

[0010] A short cylindrical fixing groove is provided above the integrated hollow disc body, and the inner side is provided with a threaded structure to increase the friction with the sleeve needle;

[0011] The surface groove is located on the outer surface of the integrated hollow disc body and is used for the reinforcement device by stitching.

[0012] The bottom disc contact surface has a medical adhesive layer to fit the skin and prevent the cannula from slipping.

[0013] Furthermore, the integrated hollow disc body is made of medical-grade silicone material, and the medical adhesive layer is 3M medical pressure-sensitive adhesive.

[0014] Furthermore, the surface groove is an annular groove, evenly distributed along the circumference of the outer surface of the integral hollow disc body, with a groove depth of 1-2mm and a width of 2-3mm.

[0015] Furthermore, the short cylindrical fixing groove has a single-start helical thread structure with a pitch of 0.5-1mm and a thread height of 0.3-0.5mm.

[0016] Furthermore, the integrated hollow disc body is pre-designed with different sizes to accommodate cannula needles with outer diameters of 5mm, 10mm, and 12mm.

[0017] Furthermore, the bottom disc contact surface edge is provided with an anti-slip protrusion structure, the protrusion height is 0.5-1mm, and they are distributed at intervals.

[0018] Furthermore, the number of surface grooves is 3-5, arranged parallel to each other along the axial direction of the disk, and the spacing between the surface grooves is 3-5mm.

[0019] Furthermore, the medical silicone material has a Shore hardness of 20A-40A and a surface roughness of Ra≤0.8μm.

[0020] Furthermore, the inner side of the opening is provided with an elastic rubber layer with a thickness of 1-2 mm and an elastic modulus of 0.5-1.5 MPa.

[0021] Furthermore, the integrated hollow disc body is provided with a visual marking area, and the marking area uses fluorescent material to print scale lines for intraoperative positioning.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] (1) Wide range of clinical applications: This device can be used in various types of laparoscopic surgery, improving surgical safety and shortening operation time. The one-piece structure eliminates the risk of detachment caused by the assembly of multiple parts, reducing production costs. The medical-grade silicone one-piece molding process ensures structural stability.

[0024] (2) The threaded structure provides uniform contact pressure and increases friction; the suture groove design improves the suture fixation strength and avoids suture displacement during surgery.

[0025] (3) Multiple sizes are available to cover commonly used cannula specifications in clinical practice, reducing the frequency of intraoperative replacement and adopting a standardized design. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the integrated laparoscopic cannula needle limiting device.

[0027] Reference numerals: 1-Opening; 2-Short cylindrical fixing groove; 3-Surface groove; 4-Bottom disc contact surface; 5-Threaded structure. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0029] Example 1

[0030] This embodiment provides an integrated laparoscopic cannula needle limiting device, such as Figure 1 As shown, it includes:

[0031] The main body is a hollow disc with an opening 1 on the side for inserting a laparoscopic cannula.

[0032] A short cylindrical fixing groove 2 is provided above the integrated hollow disc body, and a threaded structure 5 is provided on the inner side to increase the friction with the sleeve needle;

[0033] Surface groove 3, located on the outer surface of the integrated hollow disc body, is used for reinforcement by stitching knots;

[0034] The bottom disc contact surface 4 is provided with a medical adhesive layer to fit the skin and prevent the cannula from slipping.

[0035] In a specific embodiment, the integral hollow disc body is made of medical-grade silicone material, and the medical adhesive layer is 3M medical pressure-sensitive adhesive.

[0036] In a specific embodiment, the surface groove 3 is an annular groove, which is evenly distributed along the circumference of the outer surface of the integral hollow disc body. The groove depth is 1-2mm and the width is 2-3mm.

[0037] In a specific embodiment, the thread structure 5 of the short cylindrical fixing groove is a single-start spiral thread with a pitch of 0.5-1mm and a thread height of 0.3-0.5mm.

[0038] In a specific implementation, the integrated hollow disc body is pre-designed with different sizes to accommodate cannula needles with outer diameters of 5mm, 10mm, and 12mm.

[0039] In a specific embodiment, the bottom disc contact surface 4 is provided with an anti-slip protrusion structure at its edge, with a protrusion height of 0.5-1mm and distributed at intervals.

[0040] In a specific embodiment, the number of surface grooves 3 is 3-5, which are arranged in parallel along the axial direction of the disk, and the spacing between the surface grooves 3 is 3-5mm.

[0041] In a specific embodiment, the medical silicone material has a Shore hardness of 20A-40A and a surface roughness of Ra≤0.8μm.

[0042] In a specific embodiment, an elastic rubber layer with a thickness of 1-2 mm and an elastic modulus of 0.5-1.5 MPa is provided on the inner side of the opening 1.

[0043] In a specific implementation, the integrated hollow disc body is provided with a visual marking area, and the marking area uses fluorescent material to print scale lines for intraoperative positioning.

[0044] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0045] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. An integrated laparoscopic cannula needle limiting device, characterized in that, include: The main body of the integrated hollow disc has an opening (1) on the side for embedding the laparoscopic cannula needle; A short cylindrical fixing groove (2) is provided above the integrated hollow disc body, and a threaded structure (5) is provided on the inner side to increase the friction with the sleeve needle; The surface groove (3) is located on the outer surface of the integral hollow disc body and is used to reinforce the device by tying stitches. The bottom disc contact surface (4) is provided with a medical adhesive layer to fit the skin and prevent the cannula from slipping.

2. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The integrated hollow disc body is made of medical-grade silicone material, and the medical adhesive layer is 3M medical pressure-sensitive adhesive.

3. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The surface groove (3) is an annular groove, which is evenly distributed along the outer surface of the integral hollow disc body. The groove depth is 1-2mm and the width is 2-3mm.

4. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The thread structure (5) of the short cylindrical fixing groove (2) is a single-start spiral thread with a pitch of 0.5-1mm and a thread height of 0.3-0.5mm.

5. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The integrated hollow disc body is pre-set with different size specifications to accommodate cannula needles with outer diameters of 5mm, 10mm, and 12mm.

6. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The bottom disc contact surface (4) has an anti-slip protrusion structure at its edge, with a protrusion height of 0.5-1mm and distributed at intervals.

7. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The number of surface grooves (3) is 3-5, arranged in parallel along the axial direction of the disk, and the spacing between the surface grooves (3) is 3-5mm.

8. The integrated laparoscopic cannula needle limiting device according to claim 2, characterized in that, The medical silicone material has a Shore hardness of 20A-40A and a surface roughness of Ra≤0.8μm.

9. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The opening (1) has an elastic rubber layer with a thickness of 1-2 mm and an elastic modulus of 0.5-1.5 MPa on the inner side.

10. The integrated laparoscopic cannula needle limiting device according to claim 1, characterized in that, The integrated hollow disc body is equipped with a visual marking area, which uses fluorescent material to print scale lines for intraoperative positioning.

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