Abdominal cavity puncture device with good sealing performance

Abstract

The utility model relates to the technical field of medical tools, in particular to an abdominal cavity puncture device with good sealing performance, which comprises a sleeve, the upper end of the sleeve is communicated with a connecting pipe, the upper part of the connecting pipe is covered with a shell consisting of an upper shell and a lower shell, and the lower shell is connected with the outer wall of the connecting pipe. A connecting pipe is arranged in the upper shell, a through hole aligned with the connecting pipe is formed in the upper shell, a plurality of plastic columns are arranged on the upper side of the lower shell around the connecting pipe, a plurality of plastic pipes matched with the plastic columns are arranged on the lower side of the upper shell, and the plastic columns are welded in the plastic pipes through ultrasonic waves; a pressing ring aligned with the upper end of the connecting pipe is arranged on the lower side of the lower shell around the through hole. By arranging the plastic columns and the plastic pipes, when the upper shell and the lower shell are assembled, an ultrasonic welding mode is adopted, so that the firmness of the assembled upper shell and lower shell is obviously enhanced compared with that of a traditional buckle connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of medical tools, in particular to an abdominal puncture device with good sealing performance. Background Art

[0002] Laparoscopic surgery has gradually replaced traditional surgery due to its advantages of less trauma, less physiological interference to patients, good cosmetic effect, less pain, and faster recovery. It has been widely used in general surgery, gynecology, and cardiothoracic surgery. Laparoscopic surgery requires opening an incision in the patient's abdomen and performing the surgery under laparoscope observation.

[0003] In the prior art, the opening tool for laparoscopic surgery is mainly an abdominal puncture device, wherein the abdominal puncture device includes a sleeve and a puncture cone assembly placed in the sleeve. When performing the operation, a small hole is first opened at the location where the hole is required with a scalpel, and then the puncture cone assembly is inserted into the small hole to expand it, and the sleeve is driven to be inserted into the opening, and then the puncture cone assembly is pulled out of the sleeve. In order to ensure the sealing of the sleeve and prevent the patient's abdominal cavity gas from escaping, a connecting tube is provided at the upper end of the sleeve, and a sealing kit is provided in the connecting tube to seal the connecting tube, the gap between the connecting tube and the puncture cone assembly, and the gap between the connecting tube and other surgical instruments.

[0004] In the prior art, such as the Chinese patent application number 201910612495.6, combined with the description and the patent drawings (such as Figure 1 As shown, which is a partial view of FIG. 19 of the above patent, it can be seen that the sealing kit is usually pressed onto the connecting pipe using a shell, and a sealing cap is pressed onto the shell to press the edge of the sealing kit, thereby ensuring the sealing of the sealing kit. The shell mainly includes two parts, the upper shell is connected to the lower shell by a snap-fit ​​method, and after the snap-fit ​​connection, the sealing kit is pressed by the sealing cap.

[0005] Based on the above-mentioned prior art, the upper shell and the lower shell are connected by a snap-fit ​​connection. In order to facilitate installation, it is usually necessary to reserve a margin in size for the snap-fit ​​to be installed, resulting in that after the sealing cap is pressed, the tightness between the sealing cap and the sealing kit does not reach an ideal state, and the snap-fit ​​is usually only provided on both sides, which causes the pressure on both sides to be greater than the position without the snap-fit, making the sealing cap pressed and combined unevenly. In summary, various reasons lead to the problem that the sealing effect of the abdominal puncture device is prone to unsatisfactory sealing, resulting in an increase in the unqualified rate during the processing. Utility Model Content

[0006] The utility model aims to provide a abdominal puncture device with good sealing performance, so as to solve the problem in the prior art that the upper and lower shells of the abdominal puncture device are connected by buckles and easily have poor sealing effect.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A abdominal puncture device with good sealing performance comprises a sleeve, the upper end of the sleeve is connected to a connecting pipe, the upper cover of the connecting pipe is provided with an outer shell composed of an upper shell and a lower shell, the lower shell is connected to the outer wall of the connecting pipe, and the upper shell is provided with a through hole aligned with the connecting pipe, a plurality of plastic columns are arranged around the connecting pipe on the upper side of the lower shell, a plurality of plastic tubes matching the plastic columns are arranged on the lower side of the upper shell, and the plastic columns are welded in the plastic tube by ultrasonic wave; a pressure ring aligned with the upper end of the connecting pipe is arranged around the through hole on the lower side of the lower shell.

[0009] A further technical solution is that the cross section of the plastic column is cross-shaped, and the diameter of the plastic column gradually increases from top to bottom, and the inner diameter of the plastic tube gradually decreases from bottom to top.

[0010] A further technical solution is that the upper end of the through hole is inclined to form a guide surface, and the lower end of the through hole extends downward to form a guide ring.

[0011] A further technical solution is that a fitting groove is provided around the edge recess of the inner wall of the upper end of the lower shell, and a fitting strip matching the fitting groove is formed around the edge protrusion of the lower end of the upper shell. When the upper shell is installed on the lower shell, the fitting strip touches and fits into the fitting groove.

[0012] A further technical solution is that a first block is formed on the side protrusion of the connecting tube, a second block is provided on the inner wall of the lower shell, the second block is provided with a slot matching the first block, and when the upper shell is installed on the lower shell, the first block is clamped in the slot.

[0013] A further technical solution is that the first card block includes a connecting plate and a card plate connected in a "T" shape, one end of the connecting plate is connected to the outer wall of the connecting tube; the card slot opening is arranged upward on the second card block, and a strip hole connected to the card slot is arranged on the side of the second card block facing the first card block, and the strip hole is connected to the upper end of the second card block.

[0014] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By arranging plastic columns and plastic tubes, ultrasonic welding is adopted when assembling the upper shell and the lower shell, so that the firmness of the assembled upper shell and the lower shell is significantly enhanced compared with the traditional snap-on connection; 2. By ultrasonic welding, during the assembly process, the upper shell and the lower shell are gradually merged, and during the merging process, the sealing kit placed between the pressing ring and the connecting tube is gradually compressed by the pressing ring, so that the edge sealing of the sealing kit can be better, and the upper shell will not rebound after compression, resulting in poor air tightness; 3. Through multiple plastic tubes and plastic columns, the connection points between the upper shell and the lower shell can be evenly distributed, thereby generating uniform pulling force to make the pressing ring compress the sealing kit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The invention relates to a connection method of an upper shell and a lower shell of a abdominal puncture device in the prior art.

[0016] Figure 2 The utility model is an overall schematic diagram of a abdominal puncture device with good sealing performance.

[0017] Figure 3 The utility model is a schematic diagram of a sleeve and a shell of a abdominal puncture device with good sealing performance.

[0018] Figure 4 The utility model is a schematic diagram of a lower shell and a connecting tube of a abdominal puncture device with good sealing performance.

[0019] Figure 5 This is a schematic diagram of the upper shell of a abdominal puncture device with good sealing performance according to the utility model.

[0020] Figure 6 This is a cross-sectional diagram of a connecting tube and a shell of a abdominal puncture device with good sealing performance according to the utility model.

[0021] Figure 7 for Figure 4 A partial enlarged schematic diagram of the area marked A in the middle.

[0022] Icon: 1-sleeve, 2-connecting tube, 3-upper shell, 4-lower shell, 5-outer shell, 6-through hole, 7-plastic column, 8-plastic tube, 9-pressing ring, 10-guide surface, 11-guide ring, 12-fitting groove, 13-fitting strip, 14-first clamping block, 15-second clamping block, 16-slot, 17-connecting plate, 18-clamping plate, 19-strip hole, 20-sealing kit, 21-puncture cone assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Figures 2 to 7 Shown is an embodiment of the utility model.

[0025] Embodiment 1:

[0026] like Figure 2-6 As shown, a abdominal puncture device with good sealing performance includes a sleeve 1, the upper end of the sleeve 1 is connected to a connecting tube 2, the upper cover of the connecting tube 2 is provided with a shell 5 composed of an upper shell 3 and a lower shell 4, the lower shell 4 is connected to the outer wall of the connecting tube 2, and the upper shell 3 is provided with a through hole 6 aligned with the connecting tube 2, a plurality of plastic columns 7 are provided around the connecting tube 2 on the upper side of the lower shell 4, a plurality of plastic tubes 8 matching the plastic columns 7 are provided on the lower side of the upper shell 3, and the plastic columns 7 are welded in the plastic tubes 8 by ultrasonic wave; a pressure ring 9 aligned with the upper end of the connecting tube 2 is provided around the through hole 6 on the lower side of the lower shell 4. By providing the plastic columns 7 and the plastic tubes 8, when assembling the upper shell 3 and the lower shell 4, ultrasonic wave welding is adopted, so that the firmness of the assembled upper shell 3 and the lower shell 4 is significantly enhanced compared with the traditional buckle connection. Ultrasonic welding is adopted. During the assembly process, the upper shell 3 and the lower shell 4 are gradually merged. During the merging process, the sealing kit 20 placed between the pressing ring 9 and the connecting pipe 2 is gradually compressed by the pressing ring 9. This can make the edge of the sealing kit 20 more sealed. After compression, the upper shell 3 will not rebound and cause the airtightness to deteriorate. Through multiple plastic tubes 8 and plastic columns 7, the connection points between the upper shell 3 and the lower shell 4 can be evenly distributed, thereby generating a uniform pulling force to make the pressing ring 9 compress the sealing kit 20. The sealing kit 20 includes at least a cross valve or a duckbill valve. The edge of the duckbill valve fits the edge of the upper end of the connecting pipe 2, and cooperates with the pressing ring 9 to press the edge of the duckbill valve against the edge of the upper end of the connecting pipe 2 to seal the duckbill valve and the connecting pipe 2.

[0027] The cross section of the plastic column 7 is cross-shaped, and the diameter of the plastic column 7 gradually increases from top to bottom, and the inner diameter of the plastic tube 8 gradually decreases from bottom to top. During welding, the plastic column 7 and the plastic tube 8 will melt and combine instantly under the action of ultrasound when they are squeezed, and the gap outside the plastic column 7 can be used to accommodate the excess plastic after melting, so as to avoid blocking the plastic tube 8 and preventing it from being pressed together.

[0028] The upper end of the through hole 6 is inclined to form a guide surface 10, and the lower end of the through hole 6 extends downward to form a guide ring 11. By providing the guide surface 10 and the guide ring 11, when inserting the puncture cone assembly 21 or other medical tools through the through hole 6, it can be smoother, and these tools can be guided to pass through the sealing kit 20 and then enter the patient's abdominal cavity through the sleeve 1.

[0029] The edge of the inner wall around the upper end of the lower shell 4 is concavely provided with a fitting groove 12, and the edge of the lower end of the upper shell 3 is convexly formed with a fitting strip 13 that matches the fitting groove 12. When the upper shell 3 is installed on the lower shell 4, the fitting strip 13 touches and fits in the fitting groove 12. When the upper shell 3 and the lower shell 4 are assembled, the fitting strip 13 touches and fits in the fitting groove 12, so that the edges of the upper shell 3 and the lower shell 4 can be well sealed, and other debris can be prevented from entering the outer shell 5 from the connection.

[0030] Embodiment 2:

[0031] like Figure 4 and Figure 7 As shown, on the basis of the above-mentioned embodiment, the side protrusion of the connecting pipe 2 is formed with a first clamping block 14, the inner wall of the lower shell 4 is provided with a second clamping block 15, and the second clamping block 15 is provided with a clamping groove 16 matching the first clamping block 14. When the upper shell 3 is installed on the lower shell 4, the first clamping block 14 is clamped in the clamping groove 16. Through the cooperation between the first clamping block 14 and the second clamping block 15, when the lower shell 4 is installed on the connecting pipe 2, on the one hand, it can play a connecting role, and on the other hand, it can also support the side of the lower shell 4 so that the side will not be easily concave.

[0032] The first clamping block 14 includes a connecting plate 17 and a clamping plate 18 connected in a T-shape, one end of the connecting plate 17 is connected to the outer wall of the connecting pipe 2; the clamping slot 16 is opened upwardly and arranged on the second clamping block 15, and the second clamping block 15 is provided with a bar hole 19 connected to the clamping slot 16 on one side facing the first clamping block 14, and the bar hole 19 is connected to the upper end of the second clamping block 15. The lower part of the lower shell 4 is provided with a mounting hole that passes through both sides. When the lower shell 4 is installed on the connecting pipe 2, the lower shell 4 is inserted into the connecting pipe 2 from the bottom of the connecting pipe 2 through the mounting hole. During the insertion process, the clamping plate 18 will be inserted into the clamping slot 16, and the connecting plate 17 will be inserted into the bar hole 19. With the depth of entry, it will be slowly inserted. When assembling the upper shell 3, the connecting pipe 2 is supported by the pressure ring 9 of the upper shell 3, and the clamping slot 16 of the lower shell 4 supports the clamping plate 18 to stably assemble the upper shell 3 and the lower shell 4 with the connecting pipe 2.

[0033] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A abdominal puncture device with good sealing performance, comprising a sleeve (1), the upper end of the sleeve (1) is connected to a connecting tube (2), the upper cover of the connecting tube (2) is provided with a shell (5) composed of an upper shell (3) and a lower shell (4), the lower shell (4) is connected to the outer wall of the connecting tube (2), and the upper shell (3) is provided with a through hole (6) aligned with the connecting tube (2), characterized in that: The upper side of the lower shell (4) is provided with a plurality of plastic columns (7) surrounding the connecting tube (2); the lower side of the upper shell (3) is provided with a plurality of plastic tubes (8) matching the plastic columns (7); the plastic columns (7) are ultrasonically welded inside the plastic tubes (8); and the lower side of the lower shell (4) is provided with a pressure ring (9) aligned with the upper end of the connecting tube (2) surrounding the through hole (6).

2. A abdominal puncture device with good sealing performance according to claim 1, characterized in that: The cross section of the plastic column (7) is cross-shaped, and the diameter of the plastic column (7) gradually increases from top to bottom, and the inner diameter of the plastic tube (8) gradually decreases from bottom to top.

3. The abdominal puncture device with good sealing performance according to claim 1, characterized in that: The upper end of the through hole (6) is inclined to form a guide surface (10), and the lower end of the through hole (6) is extended downward to form a guide ring (11).

4. The abdominal puncture device with good sealing performance according to claim 1, characterized in that: A fitting groove (12) is formed in a recessed edge surrounding the inner wall of the upper end of the lower shell (4), and a fitting strip (13) matching the fitting groove (12) is formed in a raised edge surrounding the lower end of the upper shell (3); when the upper shell (3) is mounted on the lower shell (4), the fitting strip (13) contacts and fits in the fitting groove (12).

5. The abdominal puncture device with good sealing performance according to claim 1, characterized in that: A first clamping block (14) is formed on a side protrusion of the connecting tube (2), a second clamping block (15) is provided on the inner wall of the lower shell (4), and a clamping groove (16) matching the first clamping block (14) is provided on the second clamping block (15); when the upper shell (3) is mounted on the lower shell (4), the first clamping block (14) is clamped in the clamping groove (16).

6. The abdominal puncture device with good sealing performance according to claim 5, characterized in that: The first clamping block (14) comprises a connecting plate (17) and a clamping plate (18) connected in a T-shape, one end of the connecting plate (17) being connected to the outer wall of the connecting pipe (2); the clamping slot (16) is arranged on the second clamping block (15) with its opening facing upward, and a bar hole (19) communicating with the clamping slot (16) is arranged on a side of the second clamping block (15) facing the first clamping block (14), the bar hole (19) being connected to the upper end of the second clamping block (15).

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