Integrated stabilized puncture device

Abstract

This utility model discloses an integrated stable puncture device, relating to the field of medical device technology. The integrated stable puncture device includes a puncture cannula, with a sealing cap snapped onto the top of the puncture cannula. A puncture rod passes through the sealing cap, and one end of the puncture rod is fixedly connected to a pressing cap, while the other end extends to the bottom of the puncture cannula. The puncture cannula includes an integrated outer tube and an inner tube, with an outer sleeve integrally formed at the bottom of the inner tube. A venting tube communicating with the inner tube is integrally formed on the side of the outer tube. In this utility model, the venting tube is integrally formed with the outer and inner tubes, and the integrated puncture cannula improves both the sealing effect and the structural strength between the venting tube and the outer tube. Furthermore, only a single mold is needed for processing during production, eliminating the need for separate processing of the venting tube using an additional mold, thus saving steps in the production of the puncture cannula.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an integrated stable puncture device. Background Technology

[0002] A trocar is a medical device widely used in the medical field. The main function of a trocar is to provide a channel for the laparoscope, thoracoscope, and various surgical instruments such as scissors, forceps, and electrocoagulators to enter the body cavity in minimally invasive surgeries such as laparoscopic surgery and thoracoscopic surgery, so that doctors can observe and manipulate the organs and tissues inside the body without making large incisions.

[0003] Using the pointed tip of the trocar, the doctor inserts it through the skin, subcutaneous tissue, fascia, and other layers of the abdominal wall. The trocar is then inserted into the body along the trocar's path, creating a channel in the abdominal wall for other surgical instruments to enter and exit the body cavity. An appropriate amount of gas (such as carbon dioxide) is injected into the abdominal cavity through the inflator valve, causing the abdominal cavity to expand and forming a pneumoperitoneum. This provides sufficient operating space for the surgery, while the sealing device prevents gas leakage, maintains the stability of the pneumoperitoneum, and ensures the smooth progress of the surgery.

[0004] However, in practice, it has been noted that the traditional trocar cannula and inflator valve are designed as separate units, with a fastening structure used to secure the connection. As the usage time increases, the connection is prone to wear, which can lead to leakage. Furthermore, the separate trocar cannula and inflator valve require two different molds for manufacturing, and the connection is very susceptible to damage after assembly, making it impossible to maintain proper pneumoperitoneum and potentially causing serious medical accidents. Utility Model Content

[0005] The purpose of this invention is to provide an integrated stable puncture device, in which the puncture cannula on the outside of the puncture rod is integrally designed, which can improve the structural strength of the ventilation tube and the outer cannula. Compared with the traditional separate design, it can prevent leakage or breakage at the connection point, thereby solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An integrated stable puncture device includes a puncture cannula, a sealing cap snapped onto the upper part of the puncture cannula, a puncture rod passing through the sealing cap, and a pressing cap fixedly connected to one end of the puncture rod, while the other end of the puncture rod extends to the lower part of the puncture cannula.

[0008] The puncture cannula includes an integrally formed outer tube and an inner tube, and the bottom of the inner tube is also integrally provided with an outer sleeve. The side of the outer tube is integrally provided with a vent tube that communicates with the inner tube, and the vent tube is also integrally provided with a valve core shell.

[0009] As a further technical solution of this utility model, the sealing cover includes a sealing seat that fits on the upper part of the outer tube, and the end of the inner tube is inserted into the sealing seat. The sealing seat is symmetrically provided with an arc-shaped locking plate at one end near the inner tube, and both sides of the inner tube are provided with L-shaped locking buckles corresponding to the arc-shaped locking plates, wherein the arc-shaped locking plate is engaged in the L-shaped locking buckle.

[0010] As a further technical solution of this utility model, the bottom of the sealing seat is also provided with a sealing cap, and the end of the sealing cap is inserted into the inner tube. The inner tube is provided with limiting posts in a ring array, and the sealing cap is provided with a socket corresponding to the limiting post, and the limiting post and the socket are inserted and matched.

[0011] As a further technical solution of this utility model, the sealing seat is provided with a hole through which the puncture rod passes. The sealing seat includes a puncture needle that passes through the hole in the sealing seat, and the end of the puncture needle also passes through the sealing cap and the inner tube and extends to the bottom of the puncture sleeve.

[0012] As a further technical solution of this utility model, the puncture needle is integrally provided with a puncture pressure plate, and a positioning post is symmetrically provided on one side of the puncture pressure plate near the sealing seat, while the other side of the puncture pressure plate is fixedly connected to the pressing cap.

[0013] As a further technical solution of this utility model, the top of the sealing seat is symmetrically provided with positioning holes corresponding to the positioning posts, and the positioning posts are inserted into the positioning holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the venting tube is integrally set with the outer tube and the inner tube, and the integrally formed puncture sleeve can not only improve the sealing effect, but also improve the structural strength between the venting tube and the outer tube. Moreover, only a single mold is needed for processing during production, and no additional mold is needed to process the venting tube separately, thereby saving steps in the production of the puncture sleeve.

[0016] 2. In this utility model, during installation, the sealing seat is placed on the outer tube, and the sealing cap is inserted into the end of the inner tube. The limiting post on the inner tube is inserted into the insertion hole on the sealing cap to position the sealing cap and prevent the sealing cap from moving. Then, the sealing seat is rotated so that the arc-shaped locking plate at the bottom of the sealing seat is engaged in the L-shaped locking buckle to prevent the sealing cap from separating from the top of the puncture sleeve when the puncture rod is pulled out. Compared with the traditional plug-in connection, this connection method is more stable.

[0017] 3. In this utility model, the puncture needle in the puncture rod passes through the sealing seat, sealing cap and outer tube from top to bottom, and the end extends to the bottom of the outer tube, so as to quickly install the puncture device. The positioning post at the bottom of the puncture pressure plate is inserted into the positioning hole to position the connection, eliminating the need for a locking mechanism and making it easier for manual insertion and removal of the puncture rod. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0019] Figure 2 This utility model Figure 1 A schematic diagram of the bottom structure.

[0020] Figure 3 This is a three-dimensional structural diagram of the puncture cannula in this utility model.

[0021] Figure 4 This utility model Figure 3 A magnified view of a portion of the image.

[0022] Figure 5 This is a three-dimensional structural diagram of the sealing cap in this utility model.

[0023] Figure 6 This utility model Figure 5 A schematic diagram of the bottom structure.

[0024] Figure 7 This utility model Figure 6 A partial structural diagram.

[0025] Figure 8 This is a schematic diagram of the bottom structure of the puncture rod in this utility model.

[0026] In the picture:

[0027] Press cap-1, sealing cap-2, sealing seat-21, positioning hole-22, sealing cap-23, insertion hole-24, arc-shaped locking plate-25, puncture sleeve-3, outer tube-31, inner tube-32, outer sleeve-33, vent tube-34, valve core shell-35, limit post-36, L-shaped locking buckle-37, puncture rod-4, puncture needle-41, puncture pressure plate-42, positioning post-43. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-8 This utility model provides an integrated stable puncture device, including a puncture cannula 3, a sealing cap 2 is snapped onto the upper part of the puncture cannula 3, a puncture rod 4 passes through the sealing cap 2, and a pressing cap 1 is fixedly connected to one end of the puncture rod 4, while the other end of the puncture rod 4 extends to the lower part of the puncture cannula 3.

[0030] The puncture cannula 3 includes an integrally formed outer tube 31 and an inner tube 32. The bottom of the inner tube 32 is also integrally provided with an outer sleeve 33. The side of the outer tube 31 is integrally provided with a vent pipe 34 that communicates with the inner tube 32. The vent pipe 34 is also integrally provided with a valve core shell 35.

[0031] By adopting the above technical solution, the venting tube is integrally set with the outer tube and the inner tube. The integrally formed puncture sleeve can not only improve the sealing effect, but also improve the structural strength between the venting tube and the outer tube. Moreover, only a single mold is needed for processing during production, and there is no need to use an additional mold to process the venting tube separately, thereby saving steps in the production of the puncture sleeve.

[0032] In this embodiment, the sealing cover 2 includes a sealing seat 21 that fits on the upper part of the outer tube 31, and the end of the inner tube 32 is inserted into the sealing seat 21. The sealing seat 21 is symmetrically provided with an arc-shaped locking plate 25 at one end near the inner tube 32, and both sides of the inner tube 32 are provided with L-shaped locking buckles 37 corresponding to the arc-shaped locking plate 25, wherein the arc-shaped locking plate 25 is engaged in the L-shaped locking buckle 37.

[0033] Furthermore, the bottom of the sealing seat 21 is also provided with a sealing cap 23, and the end of the sealing cap 23 is inserted into the inner tube 32. The inner tube 32 is provided with limiting posts 36 in a ring array, and the sealing cap 23 is provided with a socket 24 corresponding to the limiting posts 36, and the limiting posts 36 and the socket 24 are inserted and engaged.

[0034] Furthermore, the sealing seat 21 has a hole through which the puncture rod 4 passes. The sealing seat 21 includes a puncture needle 41 that passes through the hole in the sealing seat 21, and the end of the puncture needle 41 also passes through the sealing cap 23 and the inner tube 32 and extends to the bottom of the puncture sleeve 3.

[0035] More specifically, the puncture needle 41 is integrally provided with a puncture pressure plate 42, and the puncture pressure plate 42 is also symmetrically provided with positioning posts 43 on one side of the sealing seat 21, while the other side of the puncture pressure plate 42 is fixedly connected to the pressing cap 1.

[0036] By adopting the above technical solution, the sealing seat is placed on the outer tube, and the sealing cap is inserted into the end of the inner tube. The limiting post on the inner tube is inserted into the insertion hole on the sealing cap to position the sealing cap and prevent the sealing cap from moving. Then, the sealing seat is rotated so that the arc-shaped locking plate at the bottom of the sealing seat is engaged in the L-shaped locking buckle to prevent the sealing cap from separating from the top of the puncture sleeve when the puncture rod is pulled out. Compared with the traditional plug-in fit, this connection method is more stable.

[0037] Furthermore, the top of the sealing seat 21 is symmetrically provided with positioning holes 22 corresponding to the positioning post 43, and the positioning post 43 is inserted into the positioning hole 22.

[0038] Furthermore, the connection between the puncture needle 41 and the puncture pressure plate 42 is integrally provided with a reinforcing rib, and multiple reinforcing ribs are arranged in a ring array to ensure the structural strength between the puncture needle 41 and the puncture pressure plate 42 and prevent damage to the connection during the pressing process.

[0039] More specifically, the bottom of the sealing seat 21 is integrally provided with an annular protrusion, and the annular protrusion is inserted into the top of the sealing cap 23 to ensure the sealing effect of the sealing cap 23 and the sealing seat 21.

[0040] Furthermore, the end of the outer tube 33 is arc-shaped, allowing the end of the outer tube 33 to follow the puncture needle 41 to puncture the skin tissue. The outer tube 33 is provided with a blocking ring on its outer side, which serves as a limit. The cross-section of the limiting ring is triangular.

[0041] Furthermore, the opening of the L-shaped locking buckle 37 is inclined to guide the arc-shaped locking plate 25. When the sealing seat 21 is placed on the piercing sleeve 3, the arc-shaped locking plate 25 is located on one side of the opening of the L-shaped locking buckle 37. Rotating the sealing seat 21 causes the arc-shaped locking plate 25 to rotate toward the L-shaped locking buckle 37. With the inclined guidance of the opening of the L-shaped locking buckle 37, the arc-shaped locking plate 25 is engaged in the L-shaped locking buckle 37.

[0042] The working principle of this utility model is as follows: First, the piercing sleeve 3 is integrally formed using a mold. Since the outer tube 31, inner tube 32, outer sleeve 33, and vent tube 34 of the piercing sleeve 3 are integrally formed, the outer tube 31 and outer sleeve 33 have high structural strength compared to the traditional separate design, and this also prevents gaps at the joints from affecting normal use. Then, the sealing seat 21 is placed on the outer tube 31. At this time, the arc-shaped locking plate 25 is located on one side of the opening of the L-shaped locking buckle 37. Rotating the sealing seat 21 causes the arc-shaped locking plate 25 to rotate towards the L-shaped locking buckle 37. As the L-shaped locking buckle 37 tilts and guides the movement, the arc-shaped locking plate 25 engages with the L-shaped locking buckle 37, fixing the sealing cap 2 above the puncture cannula 3. Then, the puncture rod 4 is inserted above the sealing cap 2. The puncture needle 41 extends through the sealing cap 2 and the puncture cannula 3 to the lower part of the outer tube 33. When in use, simply press the pressing cap 1. The pressing cap 1 transmits pressure to the puncture needle 41 through the puncture pressure plate 42. The puncture needle 41 punctures the skin tissue, and the puncture pressure plate 42 transmits pressure to the puncture cannula 3 through the sealing cap 2, causing the outer tube 33 in the puncture cannula 3 to move along the path of the puncture needle until it punctures into the skin tissue.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated, stable puncture device, characterized in that: The device includes a puncture cannula (3), a sealing cap (2) is snapped onto the top of the puncture cannula (3), and a puncture rod (4) passes through the sealing cap (2). One end of the puncture rod (4) is fixedly connected to a pressing cap (1), and the other end of the puncture rod (4) extends to the bottom of the puncture cannula (3). The puncture cannula (3) includes an outer tube (31) and an inner tube (32) that are integrally set. The bottom of the inner tube (32) is also integrally provided with an outer sleeve (33), and the side of the outer tube (31) is integrally provided with a vent tube (34) that communicates with the inner tube (32). The vent tube (34) is also integrally provided with a valve core shell (35).

2. The integrated stabilizing puncture device according to claim 1, characterized in that: The sealing cover (2) includes a sealing seat (21) that fits on the top of the outer tube (31), and the end of the inner tube (32) is inserted into the sealing seat (21). The sealing seat (21) is symmetrically provided with an arc-shaped locking plate (25) at one end near the inner tube (32), and both sides of the inner tube (32) are provided with L-shaped locking buckles (37) corresponding to the arc-shaped locking plate (25). The arc-shaped locking plate (25) is engaged in the L-shaped locking buckle (37).

3. The integrated stabilizing puncture device according to claim 2, characterized in that: The bottom of the sealing seat (21) is also provided with a sealing cap (23), and the end of the sealing cap (23) is inserted into the inner tube (32). The inner tube (32) is provided with limiting posts (36) in a ring array, and the sealing cap (23) is provided with a corresponding insertion hole (24) for the limiting post (36), and the limiting post (36) and the insertion hole (24) are inserted into each other.

4. The integrated stabilizing puncture device according to claim 3, characterized in that: The sealing seat (21) has a hole through which the puncture rod (4) passes. The sealing seat (21) includes a puncture needle (41) that passes through the hole in the sealing seat (21). The end of the puncture needle (41) also passes through the sealing cap (23) and the inner tube (32) and extends to the bottom of the puncture sleeve (3).

5. The integrated stabilizing puncture device according to claim 4, characterized in that: The puncture needle (41) is integrally provided with a puncture pressure plate (42), and a positioning post (43) is symmetrically provided on one side of the sealing seat (21) near the puncture pressure plate (42), while the other side of the puncture pressure plate (42) is fixedly connected to the pressing cap (1).

6. The integrated stabilizing puncture device according to claim 5, characterized in that: The top of the sealing seat (21) is symmetrically provided with positioning holes (22) corresponding to the positioning post (43), and the positioning post (43) and the positioning hole (22) are inserted into each other.

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