Threaded trocar capable of expanding abdominal wall for laparoscope

Abstract

The utility model relates to the technical field of laparoscopes, in particular to a threaded trocar capable of expanding an abdominal wall for a laparoscope, which comprises a puncture sheathing canal, a puncture device inner core is arranged in the puncture sheathing canal, an adjusting sleeve is fixedly connected to the top of the puncture sheathing canal, an air inlet pipe is fixedly connected to the outer side of the adjusting sleeve, and an air outlet pipe is fixedly connected to the outer side of the air inlet pipe. The bottom of the puncture sheath tube is fixedly connected with an expansion balloon. In clinical application, a patient selects a proper operative position, the whole set of puncture sheath tube with the blunt puncture inner core is punctured into the position, needing to be expanded, in the body, a pneumoperitoneum machine delivers medical CO2 gas or an injector delivers clean air into the air inlet tube, and the air inlet tube is communicated with the puncture sheath tube through a gap between the puncture sheath tube and the puncture device inner core. The gas is conveyed into the expansion balloon, and the expanded expansion balloon plays a role in expanding the tissue space, so that the established space is large, the operation is convenient, and the potential safety hazard is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laparoscopic technology, and in particular to a threaded cannula needle for laparoscopy that can expand the abdominal wall. Background Technology

[0002] Currently, minimally invasive techniques have made great progress in clinical diagnosis and treatment, especially in urology and hernia surgery, where laparoscopy is now routinely used. Most urological surgeries use the extraperitoneal approach. The current method for creating space mostly involves using a catheter and medical gloves to create a balloon, which is then inflated with a syringe to open the space. However, this method has the following problems: the space created is small, the operation is cumbersome and time-consuming, and there are safety risks. Utility Model Content

[0003] In view of the technical problems of existing technologies that use a urinary catheter and medical gloves to create an air balloon and then use a syringe to inflate it to open the space, the space created is small, the operation is cumbersome and time-consuming, and there are safety hazards, this utility model provides a threaded cannula needle for laparoscopy that can expand the abdominal wall.

[0004] The technical solution adopted by this utility model is: a laparoscopic threaded cannula needle that can expand the abdominal wall, including a puncture sheath, a puncture device core is provided inside the puncture sheath, an adjustment sleeve is fixedly connected to the top of the puncture sheath, an air inlet tube is fixedly connected to the outside of the adjustment sleeve, and an expansion balloon is fixedly connected to the bottom of the puncture sheath.

[0005] In one embodiment, the puncture sheath is externally fixedly connected with a threaded protrusion.

[0006] In one embodiment, the top of the dilating balloon is provided with an arcuate groove.

[0007] In one embodiment, a sealing sleeve is fixedly connected to the outside of the puncture device core, the sealing sleeve being located above the air inlet tube, and a gap is formed between the puncture device core and the puncture sheath.

[0008] In one embodiment, a limit ring is fixedly connected to the outside of the puncture device core.

[0009] In one embodiment, a top cover is fixedly connected to the top of the puncture device core.

[0010] In one embodiment, the flow rate of gas contained in the dilatation balloon is 600ml-1800ml.

[0011] The beneficial effects of this utility model are as follows: Compared with the prior art, in clinical application, the patient selects a suitable surgical position, and the entire puncture sheath with a blunt-tipped puncture core is inserted into the body at the location requiring expansion. The pneumoperitoneum machine delivers medical CO2 gas or clean air through a syringe into the air inlet tube. Through the gap between the puncture sheath and the puncture core, the gas is delivered into the expansion balloon. The inflated expansion balloon expands the tissue space, thereby achieving a larger space to be created, facilitating operation, and reducing safety hazards. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the inner core of the puncture device in this utility model;

[0015] Figure 4 This is a schematic cross-sectional view of the present invention;

[0016] Figure 5 This is a cross-sectional structural diagram of the adjusting sleeve in this utility model.

[0017] The markings in the diagram are: 1. Puncture sheath; 2. Adjustment sleeve; 3. Air inlet tube; 4. Threaded convex ring; 5. Dilation balloon; 6. Arc groove; 7. Inner core of puncture device; 8. Sealing sleeve; 9. Limiting ring; 10. Top cover. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is in conjunction with the appendix Figure 1-5The present invention will be further described below.

[0021] To address the problems existing in the background art, this application proposes the following technical solution: a laparoscopic threaded cannula that can expand the abdominal wall, comprising a puncture sheath 1, a trocar core 7 inside the puncture sheath 1, an adjusting sleeve 2 fixedly connected to the top of the puncture sheath 1, an air inlet tube 3 fixedly connected to the outside of the adjusting sleeve 2, and an expansion balloon 5 fixedly connected to the bottom of the puncture sheath 1. The expansion balloon 5 contains gas with a flow rate of 600ml-1800ml. Medical CO2 gas is delivered to the air inlet tube 3 by an insufflator or clean air is delivered to the balloon 5 through the gap between the puncture sheath 1 and the trocar core 7. The expanded expansion balloon 5 serves to expand the tissue space.

[0022] In a further design, the external fixed connection of the puncture sheath 1 is a threaded protrusion ring 4, which helps to increase the coefficient of friction between the muscle and the instrument when the space is established. The top of the dilation balloon 5 is provided with an arc groove 6, and the external fixed connection of the puncture device core 7 is a sealing sleeve 8, which is located above the air inlet tube 3, so there is a gap between the puncture device core 7 and the puncture sheath 1.

[0023] The balloon portion is cut out along the path of the arc-shaped groove 6 with scissors, the puncture sheath 1 is reinserted into the body, the laparoscope is inserted, and the surgical space is created by pneumoperitoneum under the operation of the pneumoperitoneum machine. Then, routine laparoscopic surgical procedures in the extraperitoneal cavity are performed. This can be used as a laparoscopic procedure.

[0024] In a further design, a limiting ring 9 is fixedly connected to the outside of the puncture core 7, and a top cover 10 is fixedly connected to the top of the puncture core 7 for easy removal.

[0025] To ensure that those skilled in the art can fully understand the technical solution, this utility model is described in detail below:

[0026] In clinical applications, the patient selects a suitable surgical position, and the entire set of puncture sheath 1 with blunt-tipped puncture core is inserted into the body to the location that needs to be dilated.

[0027] Subsequently, the insufflator delivers medical CO2 gas or clean air through a syringe into the inlet tube 3. The gas is then delivered into the dilation balloon 5 through the gap between the puncture sheath 1 and the inner core 7 of the puncture device. The inflated dilation balloon 5 expands the tissue space, and its volume can reach 600-1800ml.

[0028] Simultaneously, it allows for the removal of the puncture core and replacement with a laparoscope to create space under visual guidance. The balloon is inflated to create surgical space. Once created, the gas in the balloon can be released, and the gas is discharged through the gap and inlet. The instrument is then removed, and the balloon portion is cut along the path of the arc groove 6 with scissors. The puncture sheath 1 is reinserted into the body, and the laparoscope is inserted. Under the operation of the pneumoperitoneum machine, pneumoperitoneum is used to create surgical space, followed by routine laparoscopic surgical procedures in the extraperitoneal cavity.

[0029] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A laparoscopic threaded cannula that can expand the abdominal wall, characterized in that, It includes a puncture sheath (1), a puncture device core (7) is provided inside the puncture sheath (1), an adjustment sleeve (2) is fixedly connected to the top of the puncture sheath (1), an air inlet tube (3) is fixedly connected to the outside of the adjustment sleeve (2), and an expansion balloon (5) is fixedly connected to the bottom of the puncture sheath (1).

2. The laparoscopic threaded cannula with abdominal wall expansion capability according to claim 1, characterized in that, The external fixed connection of the puncture sheath (1) is a threaded protrusion ring (4).

3. The laparoscopic threaded cannula with abdominal wall expansion capability according to claim 2, characterized in that, The top of the dilating balloon (5) is provided with an arc-shaped groove (6).

4. A laparoscopic threaded cannula with abdominal wall expansion capability according to claim 3, characterized in that, A sealing sleeve (8) is fixedly connected to the outside of the puncture device inner core (7). The sealing sleeve (8) is located above the air inlet tube (3), and there is a gap between the puncture device inner core (7) and the puncture sheath (1).

5. A laparoscopic threaded cannula with abdominal wall expansion capability according to claim 4, characterized in that, The puncture device inner core (7) is externally fixedly connected to a limit ring (9).

6. A laparoscopically expandable threaded cannula according to claim 5, characterized in that, The top of the puncture device inner core (7) is fixedly connected to a top cover (10).

7. A laparoscopic threaded cannula that can expand the abdominal wall according to claim 6, characterized in that, The flow rate of gas contained in the dilatation balloon (5) is 600ml-1800ml.

Images