A peritoneal cavity puncture device

Abstract

The utility model discloses a kind of peritoneal cavity puncture devices, it relates to medical instrument technical field, including inflatable seat, the bottom of the inflatable seat movably connected with cylindrical containing sleeve, the inner wall of the containing sleeve movably connected with sleeve adjusting assembly, the outer wall top of the containing sleeve movably connected with connecting sealing assembly.The utility model said a kind of peritoneal cavity puncture device, its sleeve adjusting assembly can be according to the thickness of patient's abdominal cavity wall adjust the length of sleeve extension or retracting containing sleeve, flexible adjustment puncture depth, avoid unnecessary damage to patient, improve the applicability of device.By connecting sealing assembly, the sealing property of device in the inflation process is guaranteed, so that gas can smoothly from inflatable seat into containing sleeve and sleeve.And, when production assembly, containing sleeve can be quickly combined together with inflatable seat by connecting sleeve, the existence of connecting sleeve makes containing sleeve and its internal structure can be processed separately, improve the convenience and practicality of production.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an abdominal puncture device. Background Technology

[0002] Laparoscopic trocars provide a wide range of instrument channels for minimally invasive abdominal and pelvic surgeries, suitable for various minimally invasive surgical procedures. Their ergonomically designed handles offer a comfortable grip and excellent controllability during puncture. They serve as a pathway for instruments or cameras to enter the abdominal cavity through a single incision for minimally invasive laparoscopic surgery. In existing trocars, the cannula length is fixed and cannot be adjusted according to the patient's abdominal wall thickness, potentially causing unnecessary injury. Furthermore, in current technology, the trocar's channel and the top inflation seat are a single, integrated structure, which complicates manufacturing and assembly, making it less convenient.

[0003] Chinese patent document CN207949878U discloses a laparoscopic trocar, which has a trocar cap cover on the left inner surface of the trocar cap, and the trocar cap cover is engaged and fixed with the trocar cap. A sealing cap is provided on the right side of the trocar cap. The original abdominal trocar with a knife puncture head is replaced with a conical puncture head, which reduces the occurrence of abdominal fascia damage and bleeding at the puncture site caused by using a knife-type abdominal trocar. In addition, the sealing cap has a round hole, and the left end of the cannula is provided with a fixing clip and spring, which makes it easier to remove the sealing cap. This avoids the cannula slipping when removing the sealing cap during surgery when a large specimen needs to be removed, which could cause harm to the patient. It ensures safe and controllable puncture, increases the safety of puncture, and makes the operation smoother.

[0004] The existing technology has the following problems:

[0005] The puncture cannula with the above structure does not have the function of adjusting the length, and cannot be adapted to patients with different abdominal cavity thicknesses, thus having low applicability. Utility Model Content

[0006] This invention provides an abdominal puncture device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] An abdominal puncture device includes an inflatable seat, a cylindrical receiving sleeve movably connected to the bottom of the inflatable seat, a sleeve adjustment assembly movably connected to the inner wall of the receiving sleeve, and a connection sealing assembly movably connected to the top of the outer wall of the receiving sleeve.

[0009] The cannula adjustment assembly includes a cannula, a puncture needle is movably connected to the inner wall of the cannula, an annular plate is fixedly installed on the top of the outer wall of the cannula, and sliding grooves are provided on both the left and right sides of the inner wall of the receiving sleeve. Slider blocks with two matching sliding grooves are fixedly installed on both the left and right sides of the outer wall of the annular plate.

[0010] The connecting sealing assembly includes a connecting sleeve, the bottom of the inner wall of the connecting sleeve is threadedly connected to the top of the outer wall of the receiving sleeve, the top of the inner wall of the connecting sleeve abuts against the outer wall of the bottom of the inflatable seat, and the inflatable seat, the receiving sleeve and the sleeve are connected in communication.

[0011] Preferably, an internally threaded sleeve is fixedly installed at the bottom position of the front part of the outer wall of the receiving sleeve, the internally threaded sleeve is connected to the receiving sleeve, and the inner wall of the internally threaded sleeve is threaded with a bolt.

[0012] Preferably, the rear end of the bolt abuts against the front part of the outer wall of the sleeve.

[0013] Preferably, the outer wall of the receiving sleeve is engraved with scale lines on the left side.

[0014] Preferably, the top of the connecting sleeve is a trumpet-shaped structure, the bottom of the inner wall of the connecting sleeve is provided with an annular arc-shaped groove, and the outer wall of the bottom of the inflatable seat is fixedly installed with an annular arc-shaped clip that matches the arc-shaped groove.

[0015] Preferably, the bottom of the arc-shaped clip is inclined towards the side of the sleeve axis.

[0016] Preferably, a top plate is fixedly installed on the top of the inner wall of the receiving sleeve, and an annular mounting groove is opened at the upper end of the top plate. A rubber pad is fixedly installed on the inner wall of the mounting groove, and a rubber sleeve overlaps at the upper end of the rubber pad. The inner wall of the rubber sleeve overlaps with the outer wall of the puncture needle, and a second rubber pad overlaps at the upper edge of the rubber sleeve. The upper end of the second rubber pad is fixedly connected to the lower end of the inflation seat.

[0017] Preferably, a plurality of inserts and slots are fixedly installed circumferentially on the opposite sides of the first and second rubber pads, and the plurality of inserts penetrate the rubber sleeve and are inserted into the corresponding slots, and the inserts on the opposite sides of the first and second rubber pads are staggered.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides an abdominal puncture device, which, through the cooperation of the receiving sleeve, cannula, puncture needle, annular plate, groove, slider, internal threaded sleeve, bolt and scale line, can adjust the length of the cannula extending or retracting into the receiving sleeve according to the wall thickness of the patient's abdominal cavity, flexibly adjust the puncture depth, avoid unnecessary damage to the patient, and improve the applicability of the device.

[0020] 2. This utility model provides an abdominal puncture device, which ensures the device's sealing during inflation through the cooperation of a connecting sleeve, an arc-shaped groove, an arc-shaped locking strip, a top plate, a mounting groove, a first rubber pad, a rubber sleeve, a second rubber pad, an insertion post, and a slot, allowing gas to smoothly enter the receiving sleeve and cannula from the inflation seat. Furthermore, during production and assembly, the receiving sleeve can be quickly combined with the inflation seat via the connecting sleeve. The presence of the connecting sleeve allows the receiving sleeve and its internal structure to be processed separately, improving production convenience and practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall cross-section and bottom view of the present invention;

[0024] Figure 4 This is a schematic diagram (I) of the connection and sealing assembly structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the sleeve adjustment assembly structure of this utility model;

[0026] Figure 6 This is a schematic diagram (II) of the connection and sealing assembly structure of this utility model;

[0027] Figure 7 This is a partially enlarged schematic diagram of point A of this utility model.

[0028] In the diagram: 1. Inflatable seat; 2. Sleeve adjustment assembly; 3. Connecting sealing assembly; 4. Receiving sleeve; 21. Sleeve; 22. Puncture needle; 23. Annular plate; 24. Slide groove; 25. Slider; 26. Internal threaded sleeve; 27. Bolt; 28. Scale line; 31. Connecting sleeve; 32. Arc-shaped groove; 33. Arc-shaped retaining strip; 34. Top plate; 35. Mounting groove; 36. Rubber pad one; 37. Rubber sleeve; 38. Rubber pad two; 39. Insert post; 310. Slot. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0030] like Figures 1-7As shown, an abdominal puncture device includes an inflatable seat 1, a cylindrical receiving sleeve 4 movably connected to the bottom of the inflatable seat 1, a sleeve adjustment assembly 2 movably connected to the inner wall of the receiving sleeve 4, and a connecting sealing assembly 3 movably connected to the top of the outer wall of the receiving sleeve 4.

[0031] The cannula adjustment assembly 2 includes a cannula 21, a puncture needle 22 is movably connected to the inner wall of the cannula 21, an annular plate 23 is fixedly installed on the top of the outer wall of the cannula 21, and the inner wall of the receiving sleeve 4 is provided with sliding grooves 24 on both the left and right sides. The outer wall of the annular plate 23 is fixedly installed with two matching sliding grooves 24 on both the left and right sides.

[0032] The connecting sealing assembly 3 includes a connecting sleeve 31, the bottom of the inner wall of the connecting sleeve 31 is threadedly connected to the top of the outer wall of the receiving sleeve 4, the top of the inner wall of the connecting sleeve 31 abuts against the outer wall of the bottom of the inflation seat 1, and the inflation seat 1, the receiving sleeve 4 and the sleeve 21 are connected.

[0033] The cannula adjustment assembly 2 allows for adjustment of the length of the cannula 21 extending or retracting from the receiving sleeve 4 according to the wall thickness of the patient's abdominal cavity, flexibly adjusting the puncture depth and avoiding unnecessary damage to the patient, thus improving the applicability of the device. The connecting sealing assembly 3 ensures the device's airtightness during inflation, allowing gas to smoothly enter the receiving sleeve 4 and the cannula 21 from the inflation seat 1. Furthermore, during production and assembly, the receiving sleeve 4 can be quickly combined with the inflation seat 1 via the connecting sleeve 31. The presence of the connecting sleeve 31 allows the receiving sleeve 4 and its internal structure to be processed separately, improving production convenience and practicality.

[0034] like Figure 5 As shown, an internal threaded sleeve 26 is fixedly installed at the bottom position of the front part of the outer wall of the receiving sleeve 4. The internal threaded sleeve 26 is connected to the receiving sleeve 4, and a bolt 27 is threadedly connected to the inner wall of the internal threaded sleeve 26.

[0035] The internal threaded sleeve 26 and bolt 27 provide a means of fixing the sleeve adjustment assembly 2. When the sleeve 21 is adjusted to the appropriate position, the bolt 27 can be rotated to abut against the outer wall of the sleeve 21, thereby fixing the sleeve 21 and preventing it from shifting during puncture.

[0036] like Figure 5 As shown, the rear end of bolt 27 abuts against the front part of the outer wall of sleeve 21.

[0037] like Figure 5 As shown, the left side of the outer wall of the housing 4 is engraved with scale line 28.

[0038] The scale line 28 provides operators with an intuitive reference, facilitating accurate adjustment of the extension or retraction length of the cannula 21, making the adjustment of the puncture depth more precise and helping to perform personalized operations according to the specific patient's condition. Both the receiving sleeve 4 and the cannula 21 are transparent.

[0039] like Figure 4 and Figure 7 As shown, the top of the connecting sleeve 31 is a trumpet-shaped structure, and the bottom of the inner wall of the connecting sleeve 31 is provided with an annular arc-shaped groove 32. The outer wall of the bottom of the inflatable base 1 is fixedly installed with an annular arc-shaped strip 33 that matches the arc-shaped groove 32.

[0040] When connecting the inflatable base 1 and the receiving sleeve 4, simply press it downwards into the trumpet-shaped structure at the top of the connecting sleeve 31. Once the arc-shaped groove 32 engages with the arc-shaped retaining strip 33, the inflatable base 1 is fixed inside the connecting sleeve 31. The trumpet-shaped structure facilitates the connection between the connecting sleeve 31 and the inflatable base 1, improving assembly convenience. The cooperation between the arc-shaped groove 32 and the arc-shaped retaining strip 33 enhances the stability and sealing of the connection between the connecting sleeve 31 and the inflatable base 1, preventing gas leakage.

[0041] like Figure 7 As shown, the bottom of the arc-shaped clip 33 is inclined towards the axis of the sleeve 21.

[0042] It allows the user to push the curved card strip 33 into the curved card slot 32.

[0043] like Figure 4 and Figure 6 As shown, a top plate 34 is fixedly installed on the top of the inner wall of the receiving sleeve 4. An annular mounting groove 35 is opened at the upper end of the top plate 34. A rubber pad 36 is fixedly installed on the inner wall of the mounting groove 35. A rubber sleeve 37 overlaps at the upper end of the rubber pad 36. The inner wall of the rubber sleeve 37 overlaps with the outer wall of the puncture needle 22. A rubber pad 38 overlaps at the upper edge of the rubber sleeve 37. The upper end of the rubber pad 38 is fixedly connected to the lower end of the inflation seat 1.

[0044] The rubber pad 36, rubber sleeve 37, and rubber pad 38 together form a sealing structure at the puncture needle 22, preventing gas from leaking from the gap in the receiving sleeve 4, ensuring the sealing of the device during the inflation process, and improving the performance of the device.

[0045] like Figure 6 As shown, several pins 39 and slots 310 are fixedly installed circumferentially on opposite sides of rubber pad 36 and rubber pad 38. Several pins 39 penetrate the rubber sleeve 37 and are inserted into the corresponding slots 310. The pins 39 on opposite sides of rubber pad 36 and rubber pad 38 are staggered.

[0046] The insertion structure of the insert post 39 and the slot 310 further enhances the tightness of the connection between the first rubber gasket 36, the rubber sleeve 37 and the second rubber gasket 38. The staggered arrangement of the insert posts 39 makes the sealing effect more reliable, effectively prevents gas leakage, and improves the overall sealing performance and stability of the device.

[0047] The working principle of this utility model is as follows: During the production and assembly of this device, the connecting sleeve 31 can be screwed onto the top of the outer wall of the receiving sleeve 4, and the inflation seat 1 can be pressed down directly to press it into the trumpet-shaped structure at the top of the connecting sleeve 31. When the arc-shaped groove 32 locks the arc-shaped locking strip 33, the inflation seat 1 can be fixed inside the connecting sleeve 31. The trumpet-shaped structure facilitates the docking of the connecting sleeve 31 and the inflation seat 1, improving the ease of assembly. The cooperation between the arc-shaped groove 32 and the arc-shaped locking strip 33 enhances the stability and sealing of the connection between the connecting sleeve 31 and the inflation seat 1, preventing gas leakage. The puncture needle 22 passes through the top of the inflation seat 1 and enters the receiving sleeve 4 and the cannula 21. According to the wall thickness of the patient's abdominal cavity, the bolt 27 is screwed on to loosen the cannula 21 inside the receiving sleeve 4. The cannula 21 is moved according to the scale line 28, and then the bolt 27 is screwed on in the opposite direction to make it abut against the outer wall of the cannula 21, thereby fixing the cannula 21 and preventing it from shifting during puncture. The scale line 28 provides operators with an intuitive reference, making it convenient and accurate to adjust the length of the cannula 21 extending or retracting, thus making the adjustment of the puncture depth more precise.

[0048] The rubber gasket 36, rubber sleeve 37, and rubber gasket 38 together form a sealing structure at the puncture needle 22, preventing gas leakage from the gap in the receiving sleeve 4, ensuring the sealing performance of the device during inflation, and improving the device's performance. Furthermore, during production and assembly, the receiving sleeve 4 can be quickly combined with the inflation seat 1 via the connecting sleeve 31. The presence of the connecting sleeve 31 allows the receiving sleeve 4 and its internal structure to be processed independently, improving production convenience and practicality.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An abdominal puncture device, comprising an inflatable seat (1), characterized in that: The bottom of the inflatable base (1) is movably connected to a cylindrical receiving sleeve (4), the inner wall of the receiving sleeve (4) is movably connected to a sleeve adjustment assembly (2), and the top of the outer wall of the receiving sleeve (4) is movably connected to a connecting sealing assembly (3). The cannula adjustment assembly (2) includes a cannula (21), a puncture needle (22) is movably connected to the inner wall of the cannula (21), an annular plate (23) is fixedly installed on the top of the outer wall of the cannula (21), and the inner wall of the receiving sleeve (4) is provided with sliding grooves (24) on both the left and right sides. The outer wall of the annular plate (23) is fixedly installed with sliders (25) that match the two sliding grooves (24). The connecting sealing assembly (3) includes a connecting sleeve (31), the bottom of the inner wall of the connecting sleeve (31) is threadedly connected to the top of the outer wall of the receiving sleeve (4), the top of the inner wall of the connecting sleeve (31) abuts against the outer wall of the bottom of the inflatable seat (1), and the inflatable seat (1), the receiving sleeve (4) and the sleeve (21) are connected.

2. The abdominal puncture device according to claim 1, characterized in that: An internal threaded sleeve (26) is fixedly installed at the bottom position of the front part of the outer wall of the receiving sleeve (4). The internal threaded sleeve (26) is connected to the receiving sleeve (4), and a bolt (27) is threadedly connected to the inner wall of the internal threaded sleeve (26).

3. The abdominal puncture device according to claim 2, characterized in that: The rear end of the bolt (27) abuts against the front part of the outer wall of the sleeve (21).

4. The abdominal puncture device according to claim 1, characterized in that: The outer wall of the receiving sleeve (4) is engraved with scale lines (28).

5. The abdominal puncture device according to claim 1, characterized in that: The top of the connecting sleeve (31) is a trumpet-shaped structure, and the bottom of the inner wall of the connecting sleeve (31) is provided with an annular arc-shaped groove (32). The outer wall of the bottom of the inflatable seat (1) is fixedly installed with an annular arc-shaped strip (33) that matches the arc-shaped groove (32).

6. The abdominal puncture device according to claim 5, characterized in that: The bottom of the arc-shaped clip (33) is inclined towards the axis of the sleeve (21).

7. The abdominal puncture device according to claim 1, characterized in that: A top plate (34) is fixedly installed on the top of the inner wall of the receiving sleeve (4). An annular mounting groove (35) is provided at the upper end of the top plate (34). A rubber pad (36) is fixedly installed on the inner wall of the mounting groove (35). A rubber sleeve (37) overlaps the upper end of the rubber pad (36). The inner wall of the rubber sleeve (37) overlaps with the outer wall of the puncture needle (22). A rubber pad (38) overlaps at the upper edge of the rubber sleeve (37). The upper end of the rubber pad (38) is fixedly connected to the lower end of the inflation seat (1).

8. The abdominal puncture device according to claim 7, characterized in that: On the opposite sides of the first rubber pad (36) and the second rubber pad (38), a number of inserts (39) and slots (310) are fixedly installed in the circumferential direction. The inserts (39) penetrate the rubber sleeve (37) and are inserted into the corresponding slots (310). The inserts (39) on the opposite sides of the first rubber pad (36) and the second rubber pad (38) are staggered.

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