Puncture outfit for laparoscopic surgery

Abstract

The utility model discloses a laparoscopic surgery puncture outfit, which comprises a puncture sleeve component and a sealing component, the puncture sleeve component comprises a puncture cannula, the puncture cannula comprises a bowl-shaped part, the laparoscopic surgery puncture outfit is characterized in that the sealing component comprises a choke valve, the choke valve is clamped in the bowl-shaped part, and the sealing component is arranged in the bowl-shaped part. The choke valve comprises a valve body, a flange and a pair of choke sheets, the flange is fixedly arranged on the periphery of one end of the valve body, the pair of choke sheets are fixed to the other end of the valve body, the pair of choke sheets are symmetrically arranged and are sunken towards the inner side of the valve body to form inclined concave surfaces, and the inclined concave surfaces are attached to each other to form a linear slot. The choke valve of the surgical puncture outfit is good in air tightness and high in structural strength.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a laparoscopic surgical puncture device. Background Technology

[0002] The primary purpose of a laparoscopic trocar is to penetrate the entire thickness of the abdominal wall, establishing a passage between the outside and the abdominal cavity. This allows surgical instruments to enter the abdominal cavity through the trocar cannula, completing the surgical procedure and achieving the same goal as open surgery. Trocars are generally irradiated and sterilized at the factory and are for single use only. A laparoscopic trocar mainly consists of three parts: a trocar rod, a sealing valve, and a trocar cannula.

[0003] Existing sealing valves are generally one-way air-blocking valves with a flat duckbill slit structure. After artificial pneumoperitoneum is established, the intra-abdominal air pressure is greater than the external air pressure. The existing sealing valve structure is prone to not closing tightly during the removal of the puncture rod or other surgical instruments, which can lead to air leakage or even deformation of the duckbill slit part of the sealing valve when the puncture rod or other surgical instruments are removed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a laparoscopic surgical trocar, which features a well-sealed airlock valve and high structural strength.

[0005] This utility model is achieved through the following technical solution:

[0006] A laparoscopic surgical trocar includes a trocar assembly and a sealing assembly. The trocar assembly includes a trocar cannula with a bowl-shaped portion. The sealing assembly includes an air-blocking valve, which is fitted inside the bowl-shaped portion. The air-blocking valve includes a valve body, a flange, and a pair of air-blocking plates. The flange is fixedly disposed on the outer periphery of one end of the valve body, and the pair of air-blocking plates are fixedly disposed on the other end. The pair of air-blocking plates are symmetrically arranged and recessed into the inner side of the valve body to form a slanted concave surface. The slanted concave surfaces of the pair of air-blocking plates fit together to form a straight slit.

[0007] Furthermore, the air-blocking plate is provided with reinforcing ribs on the side opposite to the inclined concave surface.

[0008] Furthermore, a second boss is provided on the side of the flange away from the valve body, and the puncture sleeve assembly includes a first upper cover assembly, the first upper cover assembly includes a sealing cap, and the second boss abuts against the sealing cap.

[0009] Furthermore, an annular groove is provided on the side of the flange near the valve body, and the annular groove engages with the upper opening of the bowl-shaped portion.

[0010] Furthermore, the puncture sheath assembly also includes a first upper cover assembly, which includes a sealing upper cover, at least one support piece, a sealing cap, and a sealing lower cover. The sealing upper cover and the sealing lower cover are connected in a mating manner. The sealing cap is disposed between the sealing upper cover and the sealing lower cover. The at least one support piece is fixedly disposed between the sealing cap and the sealing upper cover to prevent the sealing cap from turning outward.

[0011] Furthermore, the puncture sleeve assembly also includes a puncture sleeve end cap, a puncture sleeve lower cap, and an annular locking ring. The puncture sleeve also includes a tubular portion communicating with the lower end face of the bowl-shaped portion. The puncture sleeve end cap and the puncture sleeve lower cap are fixed by the annular locking ring, and the tubular portion passes through the puncture sleeve lower cap.

[0012] Furthermore, the outer surface of the tubular portion is provided with a first anti-slip texture, and the end of the tubular portion away from the bowl-shaped portion is provided with a bevel to reduce puncture resistance. The length of the tubular portion ranges from 3 cm to 22 cm to meet the needs of different surgical operations.

[0013] Furthermore, the sealing assembly also includes a Luer connector and an air injection valve. The Luer connector passes through the lower cover of the puncture sleeve and communicates with the cup-shaped portion. The air-blocking valve passes through the Luer connector.

[0014] Furthermore, the air injection valve includes a vent shaft, which passes through the Luer joint and has a second anti-slip texture on its surface to increase frictional resistance and prevent slippage.

[0015] Furthermore, the laparoscopic surgical trocar also includes a puncture core assembly, which includes a handle and a puncture core, the handle and the puncture core being fixedly connected. The puncture core includes a base and a puncture rod, the puncture rod being fixedly connected to the base, and a cutting edge being provided at the end of the puncture rod away from the base. In use, the puncture core is inserted into the tubular portion.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. By symmetrically setting a pair of air-blocking plates and recessing them into the inner side of the valve body to form a sloping concave surface, and by having the sloping concave surfaces fit together to form a straight slit, the air-blocking valve can adaptively fit when the air pressure in the abdominal cavity is high, thus ensuring the airtightness of the air-blocking valve.

[0018] 2. By setting reinforcing ribs on the concave surfaces of a pair of air-blocking plates relative to the inner side of the valve body, the air-blocking plates are less prone to deformation when the surgical instruments are pulled out, resulting in higher structural strength. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall assembly structure of an embodiment of the laparoscopic surgical trocar.

[0020] Figure 2 for Figure 1 Exploded view of the trocar;

[0021] Figure 3 for Figure 1 Exploded view of the first upper cover component;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the core puncture assembly;

[0023] Figure 5 for Figure 4 Exploded view;

[0024] Figure 6 for Figure 2 Side view of the medium-resistance air valve;

[0025] Figure 7 for Figure 1 Top view of the medium-resistance air valve;

[0026] Figure 8 for Figure 1 A bottom view of a medium-resistance air valve.

[0027] 1. Puncture sleeve assembly; 11. First upper cover assembly; 12. Puncture sleeve end cap; 13. Puncture sleeve lower cover; 14. Puncture sleeve cannula; 140. Bowl-shaped portion; 141. Tubular portion; 142. First anti-slip texture; 143. Bevel; 144. Connecting port; 15. Ring locking ring; 151. Spring; 2. Puncture core assembly; 21. Handle portion; 211. Second upper cover; 212. Release button; 213. Auxiliary handle; 214. Connecting rod; 215. First boss; 216. Paddle; 22. Puncture core portion; 221. Base; 222. Puncture rod; 223. 1. Cutting blade; 3. Sealing assembly; 31. Air-blocking valve; 32. Luer connector; 33. Air injection valve; 331. Vent shaft; 332. Vent hole; 333. Second anti-slip texture; 110. Sealing top cover; 120. First fixing member; 121. Second fixing member; 130. Support plate; 150. Sealing cap; 160. Sealing bottom cover; 161. First buckle; 300. Valve body; 310. Flange; 311. Groove; 312. Annular groove; 313. Second boss; 320. Air-blocking plate; 321. Sloping concave surface; 322. Slit; 330. Reinforcing rib. Detailed Implementation

[0028] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] like Figure 1 As shown, the embodiment of this laparoscopic surgical trocar includes a trocar assembly 1, a trocar core assembly 2, and a sealing assembly 3. The trocar core assembly 2 is inserted into the trocar assembly 1, and the sealing assembly 3 is disposed inside the trocar assembly 1.

[0030] like Figure 2 As shown, the puncture sheath assembly 1 includes a puncture sheath end cap 12, a puncture sheath lower cap 13, a puncture sheath 14, and an annular locking ring 15. The puncture sheath 14 includes a bowl-shaped portion 140 and a tubular portion 141. One end of the tubular portion 141 communicates with the lower end face of the bowl-shaped portion 140, and the other end, away from the bowl-shaped portion 140, has a bevel 143 to reduce puncture resistance. The outer surface of the tubular portion 141 has a first anti-slip texture 142. The length of the tubular portion 141 ranges from 3 cm to 22 cm to meet the needs of different surgical procedures. The puncture sheath end cap 12 and the puncture sheath lower cap 13 are fixed together by the annular locking ring 15. The tubular portion 141 passes through the puncture sheath lower cap 13, so that the bowl-shaped portion 140 is enclosed by the puncture sheath lower cap 13.

[0031] like Figure 3 As shown, the stab sheath assembly 1 also includes a first upper cover assembly 11, which includes a sealing upper cover 110, at least one support piece 130, a sealing cap 150, and a sealing lower cover 160. The sealing upper cover 110 and the sealing lower cover 160 are connected in a mating manner, the sealing cap 150 is disposed between the sealing upper cover 110 and the sealing lower cover 160, and at least one support piece 130 is fixedly disposed between the sealing cap 150 and the sealing upper cover 110 to prevent the sealing cap 150 from turning outward.

[0032] In this embodiment, the first upper cover assembly 11 further includes a first fixing member 120 and a second fixing member 121. The upper side of the sealing cap 150 is supported by four support pieces 130 to maintain the structure. Preferably, the first fixing member 120 and the second fixing member 121 are a pair of mating annular resin rings. The first fixing member 120 abuts against the upper side of the support piece 130, and the second fixing member 121 abuts against the lower side of the sealing cap 150. Together, they fix the support piece 130 and the sealing cap 150 between the sealing upper cover 110 and the sealing lower cover 160. The sealing lower cover 160 includes four first snaps 161, and the annular locking ring 15 includes a corresponding number of springs 151. The springs 151 are located in the square groove of the annular locking ring 15 and abut against the locking block. When the first snaps 161 extend into the square groove, the locking block locks the first snaps 161 under the action of the springs 151, thereby locking the first upper cover assembly 11 and the annular locking ring 15.

[0033] Continue to refer to Figure 2 The sealing assembly 3 includes a vent valve 31, a Luer connector 32, and an injection valve 33. The vent valve 31 is fitted inside the bowl-shaped portion 140, which also includes a connection port 144 on its side wall. The connection port 144 is connected to the Luer connector 32 and the injection valve 33 in sequence. The injection valve 33 passes through the Luer connector 32. Furthermore, the injection valve 33 includes a vent shaft 331, which passes through the Luer connector 32 and has a second anti-slip texture 333 on its surface to increase frictional resistance and prevent slippage. The vent shaft 331 also has a vent hole 332 for introducing external gas into the sealing assembly 3.

[0034] In this embodiment, the entire sealing assembly 3 is enclosed by the first upper cover assembly 11 and the lower sealing cover 160. The sealing cap 150, the air-blocking valve 31, and the bowl-shaped portion 140 form a sealing area. Only the Luer connector 34, which is connected to the bowl-shaped portion 140, is connected to the external air source. By rotating the air injection valve 33, when the direction of the vent 332 is the same as the air path of the Luer connector 32, the sealing area is connected to the external clean air source. When the direction of the vent 332 is opposite to the air path of the Luer connector 32, the sealing area is disconnected from the external air source, thus maintaining the sealing state of the entire system. Adjusting the opening and closing degree of the vent 332 can adjust the air pressure. Preferably, in this embodiment, the first anti-slip texture 142 is an integrally formed grid-like pattern. When the vent shaft 331 is inserted into the Luer connector 32, the first anti-slip texture 142 and the inner wall of the Luer connector 32 are press-fitted to increase air tightness. When the air injection valve 33 is rotated, the first anti-slip texture 142 can increase frictional resistance, prevent the air injection valve 33 from slipping under the pressure of the air source, and increase the reliability of the air injection valve 33.

[0035] like Figures 4 to 6As shown, the air-blocking valve 31 includes a valve body 300, a flange 310, and a pair of air-blocking plates 320. A flange 310 is fixedly disposed on the outer periphery of one end of the valve body 300, and a pair of air-blocking plates 320 are fixedly disposed on the other end. The pair of air-blocking plates 320 are symmetrically arranged and recessed towards the inside of the valve body 300 to form a sloping concave surface 321. The sloping concave surfaces 321 fit together to form a straight slit 322. Further, the sloping concave surface 321 of the air-blocking plate 320 has a reinforcing rib 330 positioned relative to the inside of the valve body 300. A second boss 313 is provided on the side of the flange 310 away from the valve body 300, and an annular groove 312 is formed on the side closer to the valve body 300.

[0036] In this embodiment, the valve body 300 is cylindrical. When the first upper cover assembly 11 is fastened to the lower cover 13 of the puncture sleeve, the lower end of the sealing cap 150 abuts against the second protrusion 313 and engages the annular groove 312 at the upper opening of the bowl-shaped portion 140, thus forming a sealing area between the valve body 300 and the bowl-shaped portion 140. A pair of slots 311 are provided on the flange 310, which abut against the inner protrusion of the puncture sleeve end cap 12, ensuring that the valve body 300 will not rotate during installation and use, thus affecting airtightness. During use, the side containing the gas-blocking plate 320 faces the abdominal cavity. Surgical instruments enter the abdominal cavity environment through the suture 322. Because the air pressure inside the abdominal cavity is greater than the external air pressure during surgery, the presence of the inclined concave surface 321 can push the gas-blocking plate 320 to shift inward toward the valve body 300, so that the gas-blocking plate 320 fits tightly, ensuring the airtightness of the abdominal cavity environment. The presence of reinforcing rib 330 increases the structural strength of the gas barrier 320, making it less prone to deformation when subjected to the pressure difference between the inside and outside of the abdominal cavity and when surgical instruments are removed.

[0037] like Figure 7 and Figure 8 As shown, the puncture core assembly 2 includes a handle portion 21 and a puncture core portion 22. In use, the puncture core portion 22 is inserted into the tubular portion 141. The handle portion 21 includes a second upper cover 211 and a release button 212. One end of the release button 212 is fixedly connected to the second upper cover 211, and the other end is fixedly connected to the puncture core portion 22. The puncture core portion 22 includes a base 221 and a puncture rod 222. The puncture rod 222 is fixedly connected to the base 221, and the second upper cover 211 is connected to the base 221 via a snap-fit ​​connection. Further, a cutting blade 223 is provided at the end of the puncture rod 222 away from the base 221. Further, the puncture core assembly 2 also includes an auxiliary handle 213, which is fixedly connected to the base 221 via a hinge.

[0038] In this embodiment, the release button 212 is used to release the lock between the base 221 and the first upper cover assembly 11 when the puncture core assembly 2 is pulled out. The specific structure and locking process here are existing technologies and will not be described in detail here. The auxiliary handle 213 includes a connecting rod 214, a first boss 215, and a lever 216. The connecting rod 214 is engaged on the base 221, allowing the auxiliary handle 213 to rotate around the connecting rod 214. During the puncture process, it is sometimes necessary to cooperate with the endoscope inserted into the puncture rod 222. Therefore, by pushing the lever 216 upward, the auxiliary handle 213 rotates, causing the first boss 215 to engage the endoscope's wiring rod on the base 221, thus fixing the endoscope.

[0039] This laparoscopic surgical trocar must be used in conjunction with a scalpel, pneumoperitoneum needle, and other surgical instruments.

[0040] Before the puncture begins, the operator inserts the puncture core assembly 2 into the puncture sheath assembly 1. Next, the operator makes an incision in the patient's abdominal skin with a scalpel and inflates the abdomen using a pneumoperitoneum needle. Then, the entire puncture rod 222, along with the tubular portion 141, is inserted into the patient's abdominal cavity through the cutting edge 223 at one end of the puncture rod 222. Once the puncture device reaches the target position, the operator holds the first anti-slip groove 142 in place at the incision site on the patient's abdomen, grips the handle 21, and presses the release button 212 to completely remove the puncture core assembly 2. The operator then adjusts the inflation valve 33 to connect the air passage of the Luer connector 32 to the sealing assembly 3, allowing an external clean air source to connect to the abdominal cavity and maintain intra-abdominal pressure, facilitating subsequent surgical procedures.

[0041] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A laparoscopic surgical trocar, comprising a trocar assembly (1) and a sealing assembly (3), wherein the trocar assembly (1) includes a trocar cannula (14), the trocar cannula (14) including a cup-shaped portion (140), characterized in that: The sealing assembly (3) includes an air-blocking valve (31), which is fitted inside the bowl-shaped portion (140). The air-blocking valve (31) includes a valve body (300). A flange (310) is fixedly provided on the outer periphery of one end of the valve body (300), and a pair of air-blocking plates (320) are fixed on the other end. The pair of air-blocking plates (320) are symmetrically arranged and recessed into the valve body (300) to form a sloping concave surface (321). The sloping concave surfaces (321) of the pair of air-blocking plates (320) fit together to form a straight slit (322).

2. The laparoscopic surgical trocar according to claim 1, characterized in that, The air-blocking plate (320) is provided with a reinforcing rib (330) on the side opposite to the inclined concave surface (321).

3. The laparoscopic surgical trocar according to claim 1, characterized in that, The flange (310) has a second boss (313) on the side away from the valve body (300). The puncture sleeve assembly (1) includes a first cover assembly (11), the first cover assembly (11) includes a sealing cap (150), and the second boss (313) abuts against the sealing cap (150).

4. The laparoscopic surgical trocar according to claim 1, characterized in that, The flange (310) has an annular groove (312) on the side near the valve body (300), and the annular groove (312) engages with the upper opening of the bowl-shaped part (140).

5. The laparoscopic surgical trocar according to claim 3, characterized in that, The first upper cover assembly (11) further includes a sealing upper cover (110), at least one support piece (130), and a sealing lower cover (160). The sealing upper cover (110) and the sealing lower cover (160) are connected in a cooperating manner. The sealing cap (150) is disposed between the sealing upper cover (110) and the sealing lower cover (160). The at least one support piece (130) is fixedly disposed between the sealing cap (150) and the sealing upper cover (110) to prevent the sealing cap (150) from turning outward.

6. The laparoscopic surgical trocar according to claim 3, characterized in that, The puncture sleeve assembly (1) further includes a puncture sleeve end cap (12), a puncture sleeve lower cap (13), and an annular locking ring (15). The puncture sleeve (14) further includes a tubular portion (141) communicating with the lower end face of the bowl-shaped portion (140). The puncture sleeve end cap (12) and the puncture sleeve lower cap (13) are fixed by the annular locking ring (15). The tubular portion (141) passes through the puncture sleeve lower cap (13).

7. The laparoscopic surgical trocar according to claim 6, characterized in that, The outer surface of the tubular part (141) is provided with a first anti-slip texture (142), and the end of the tubular part (141) away from the bowl-shaped part (140) is provided with a bevel (143) to reduce puncture resistance. The length of the tubular part (141) ranges from 3 cm to 22 cm to meet the needs of different surgical operations.

8. The laparoscopic surgical trocar according to claim 6, characterized in that, The sealing assembly (3) also includes a Luer connector (32) and an air injection valve (33). The Luer connector (32) is inserted through the lower cover (13) of the puncture sleeve and communicates with the bowl-shaped part (140). The air injection valve (33) is inserted inside the Luer connector (32).

9. The laparoscopic surgical trocar according to claim 8, characterized in that, The air injection valve (33) includes a vent shaft (331), which passes through the Luer joint (32) and has a second anti-slip texture (333) on its surface to increase frictional resistance and prevent slippage.

10. The laparoscopic surgical trocar according to claim 6, characterized in that, The laparoscopic surgical trocar also includes a trocar assembly (2), which includes a handle (21) and a trocar (22). The handle (21) and the trocar (22) are fixedly connected. The trocar (22) includes a base (221) and a trocar (222). The trocar (222) is fixedly connected to the base (221). A cutting edge (223) is provided at one end of the trocar (222) away from the base (221). When in use, the trocar (222) is inserted into the tubular part (141).

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