Puncture outfit

Abstract

The utility model discloses a puncture outfit, which relates to the technical field of medical instruments, and comprises a catheter, a puncture outfit, a puncture outfit, a puncture outfit, a puncture outfit, a puncture outfit and a puncture outfit, one end of the mounting seat is provided with a containing cavity with an opening, the containing cavity is arranged outside the outer cone part in a covering mode, and the other end of the mounting seat is provided with a Luer interface; the elastic sealing piece is arranged in the containing cavity, one end of the elastic sealing piece is sunken to form an inner cone part, the other end of the elastic sealing piece is provided with an air inlet communicated with the inner cone part, the inner cone part abuts against the outer cone part, and the air inlet is communicated with the Luer interface. The utility model provides a puncture outfit free of a switch.

Description

Technical Field

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

[0002] In laparoscopic surgery, to provide sufficient operating space, it is usually necessary to inject gas into the patient's abdominal cavity to establish pneumoperitoneum. This process relies on an inflation seat connected to the trocar. Currently, most trocars on the market use a rotary inflation valve design. This design has certain limitations. First, users often need to use both hands to operate it, one hand to stabilize the catheter position and the other hand to rotate to open or close the valve, which undoubtedly increases the difficulty of operation for medical staff. Second, the rotary inflation valve design is relatively complex, which not only increases manufacturing costs but may also affect the overall reliability and durability of the equipment. Utility Model Content

[0003] The main purpose of this invention is to propose a puncture device that simplifies the structural complexity of the inflation part and improves the convenience of the inflation operation.

[0004] To achieve the above objectives, this utility model proposes a puncture device, comprising:

[0005] The duct has an internal channel, and an outer cone portion is provided on one side of the duct. An air inlet is provided on the outer side wall of the outer cone portion, which communicates with the channel.

[0006] The mounting base has an open receiving cavity at one end, which covers the outside of the outer cone portion, and a Luer interface at the other end of the mounting base.

[0007] An elastic seal is disposed within the accommodating cavity. One end of the elastic seal is recessed to form an inner cone portion, and the other end is provided with an air inlet communicating with the inner cone portion. The inner cone portion abuts against the outer cone portion, and the air inlet communicates with the Luer interface.

[0008] In one embodiment, a plurality of air inlets are provided, and the plurality of air inlets are spaced apart around the axis of the outer cone.

[0009] In one embodiment, the diameter of the air inlet is smaller than the diameter of the Luer interface.

[0010] In one embodiment, the resilient seal is configured as an annular structure, with the inner cone and the air inlet located at opposite ends of the resilient seal along its axial direction.

[0011] In one embodiment, the resilient seal includes:

[0012] The first ring portion is coaxially arranged with the outer cone portion, and the inner cone portion is located on the side of the first ring portion facing the outer cone portion;

[0013] The second ring is located on the side of the first ring near the Luer interface. The second ring slides with the receiving cavity. The outer diameter of the first ring is smaller than the outer diameter of the first ring.

[0014] In one embodiment, the resilient seal is made of silicone.

[0015] In one embodiment, a limiting portion is provided on the outer wall of the catheter, the limiting portion extends around the outer cone portion and surrounds the outer cone portion to form an insertion groove, and the mounting seat is inserted into the insertion groove.

[0016] In one embodiment, the mounting base is bonded and fixed to the conduit.

[0017] In one embodiment, the taper of the inner cone is the same as the taper of the outer cone.

[0018] In this utility model, an outer conical portion is provided on the guide tube, and an air inlet is provided on the outer conical portion. A mounting base is provided on the outside of the outer conical portion, and an elastic sealing element that mates with the outer conical portion is provided inside the mounting base. In addition, a Luer interface is provided at the other end of the mounting base. In use, the Luer male connector is connected to the Luer interface, and one end of the Luer male connector is screwed into the receiving cavity and abuts against the elastic sealing element, pushing the elastic sealing element to move closer to the air inlet. During this process, the elastic sealing element deforms, and the inner conical portion expands. The air intake is connected to the air inlet on the outer cone, thus connecting the Luer male head to the inner channel of the catheter and allowing air to pass through. When the Luer male head is removed, the elastic seal will return to its original shape, and the inner cone will re-seal the air inlet on the outer cone, thus closing the air intake. In this way, the air intake of the puncture device can be opened and closed by removing and installing the Luer male head, which improves the convenience of using the puncture device. In addition, the valve structure is omitted in the puncture device, which simplifies the structure of the puncture device and reduces the manufacturing cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the puncture device provided by this utility model;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 A schematic diagram of the structure of the outer cone portion of the puncture device provided by this utility model;

[0023] Figure 4 A schematic diagram of the structure of the elastic seal in the puncture device provided by this utility model.

[0024] Explanation of icon numbers:

[0025] 100, conduit; 110, channel; 120, outer cone; 130, air inlet; 140, limiting part; 200, mounting base; 210, receiving cavity; 220, Luer interface; 300, elastic seal; 310, inner cone; 320, air inlet; 330, first ring; 340, second ring.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] 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 scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] To facilitate the inflation operation of the trocar and simplify its structure, this technical solution proposes a trocar, comprising: a catheter 100 with an internal channel 110, an outer cone 120 on one side of the catheter 100, and an air inlet 130 communicating with the channel 110 on the outer side wall of the outer cone 120; a mounting base 200 with an open receiving cavity 210 at one end, the receiving cavity 210 covering the outer cone 120, and a Luer interface 220 at the other end of the mounting base 200; and an elastic seal 300 disposed within the receiving cavity 210, one end of the elastic seal 300 recessed to form an inner cone 310, and the other end having an air inlet 320 communicating with the inner cone 310, the inner cone 310 abutting against the outer cone 120, and the air inlet 320 communicating with the Luer interface 220.

[0031] In this utility model, an outer cone portion 120 is provided on the conduit 100, and an air inlet 130 is provided on the outer cone portion 120. A mounting base 200 is provided on the outside of the outer cone portion 120, and an elastic sealing element 300 that mates with the outer cone portion 120 is provided inside the mounting base 200. In addition, a Luer connector 220 is provided at the other end of the mounting base 200. In use, the Luer male connector is connected to the Luer connector 220, and one end of the Luer male connector is screwed into the receiving cavity 210 and abuts against the elastic sealing element 300, pushing the elastic sealing element 300 to move closer to the air inlet 130. During this process, the elastic sealing element 300... When the Luer male head deforms, the inner cone 310 expands until the air inlet 320 connects with the air inlet 130 on the outer cone 120, thus connecting the Luer male head with the inner channel 110 of the catheter 100 and enabling air passage. When the Luer male head is removed, the elastic seal 300 will return to its original shape, and the inner cone 310 will re-seal the air inlet 130 on the outer cone 120, thus closing the air passage. In this way, the air passage of the puncture device can be opened and closed by removing and installing the Luer male head, which improves the convenience of using the puncture device. In addition, the valve structure is omitted in the puncture device, which simplifies the structure of the puncture device and reduces the manufacturing cost.

[0032] like Figures 1 to 4 In one embodiment of this utility model, the trocar includes a catheter 100, the interior of which is provided with an axially extending channel 110. This channel 110 is used for inserting surgical instruments or for inflating the abdominal cavity. An interface is provided on one side of the catheter 100, which communicates with the channel 110. Figure 2 and Figure 3The device includes an outer conical portion 120 at the interface, with an air inlet 130 on its side wall, which communicates with the interface. The device also includes a mounting base 200, which is hollow to form a receiving cavity 210. One side of the mounting base 200 has an opening communicating with the receiving cavity 210. The mounting base 200 is positioned outside the outer conical portion 120 via an opening and, with the help of the catheter 100, seals the opening by engaging with the outer side wall. The outer conical portion 120 extends into the receiving cavity 210, and the mounting base 200 is positioned opposite the opening. On the other side, a Luer connector 220 is provided, which is compatible with Luer male connectors that are screwed on. The Luer connector 220 has a channel 110 communicating with the receiving cavity 210. Additionally, an elastic seal 300 is provided within the receiving cavity 210. This elastic seal 300 can be made of medical-grade elastic materials such as silicone. The elastic seal 300 can be cylindrical in shape and can be coaxially arranged with the outer cone portion 120 and slide within the receiving cavity 210 along the axial direction of the outer cone portion 120. An inner cone 310, adapted to the outer cone 120, is recessed on one side facing the outer cone 120. Furthermore, an axially extending air inlet 320 is provided inside the elastic seal 300. One end of the air inlet 320 communicates with the deepest part of the inner cone 310, and the other end extends towards and communicates with the Luer interface 220. When no external force is applied, the outer cone 120 is inserted into the inner cone 310, and the elastic seal 300 abuts against the interior of the receiving cavity 210 on the side communicating with the Luer interface 220. When in use, the inner cone 310 fits against the outer cone 120, sealing the air inlet 130 on the outer cone 120. During use, the air supply pipe equipped with a Luer male connector is inserted into the Luer interface 220. As the Luer male connector penetrates deeper and contacts the elastic seal 300, the seal is compressed and moves towards the air inlet 130, simultaneously deforming to expand its inner cone 310. This process continues until the air inlet 130 is fully exposed and connects with the air inlet 130 on the outer cone 120, thus allowing gas flow. After removing the Luer male connector, the elastic seal 300 automatically resets due to its own restoring force, resealing the air inlet 130 to ensure no gas leakage. This method of opening and closing the air supply by disassembling and reassembling the air supply pipe simplifies operation, eliminates the need for a valve structure on the puncture device, and reduces manufacturing costs.

[0033] like Figure 3 In one embodiment of this utility model, multiple air inlets 130 are provided, and the multiple air inlets 130 are spaced apart around the axis of the outer cone portion 120. In this embodiment, two air inlets 130 can be provided, and the two air inlets 130 are spaced equally around the axis of the outer cone portion 120. This can increase the area of ​​communication between the air inlet 320 and the air inlet 130, increase the air flow rate, and thus increase the inflation speed.

[0034] In one embodiment of this utility model, the diameter of the air inlet 320 is smaller than the diameter of the Luer connector 220. Thus, after the Luer connector passes through the Luer connector 220, it will abut against the outer periphery of the air inlet 320, facilitating the application of axial force by the Luer connector to the elastic seal 300.

[0035] like Figure 4 In one embodiment of this utility model, the elastic seal 300 is configured as an annular structure, with the inner cone portion 310 and the air inlet 320 respectively located at opposite ends of the axial direction of the elastic seal 300. The elastic seal 300 has an annular structure, and its outer circumferential dimensions are adapted to the accommodating cavity 210, ensuring that the elastic seal 300 can only slide axially. Furthermore, the inner cone portion 310 and the air inlet 320 are located on opposite sides of the elastic seal 300. This arrangement limits the stability of the movement direction of the elastic seal 300, prevents it from jamming, and improves its reliability.

[0036] like Figure 4 In one embodiment of this utility model, the elastic seal 300 includes: a first ring portion 330, coaxially arranged with the outer cone portion 120, and an inner cone portion 310 disposed on the side of the first ring portion 330 facing the outer cone portion 120; a second ring portion 340 disposed on the side of the first ring portion 330 near the Luer interface 220, the second ring portion 340 slidingly engaging with the receiving cavity 210, and the outer diameter of the first ring portion 330 being smaller than the outer diameter of the receiving cavity 210. This arrangement ensures the stability of the elastic seal 300 during movement by allowing the second ring portion 340 to slide against the receiving cavity 210. The smaller outer diameter of the first ring portion 330 compared to the second ring portion 340 provides more clearance between the first ring portion 330 and the receiving cavity 210, giving the elastic seal 300 more room for deformation, preventing overpressure, improving its reliability, increasing the axial travel of the elastic seal 300, and making the air inlet 130 on the outer cone surface more easily exposed.

[0037] As shown in the figure, a limiting part 140 is provided on the outer wall of the conduit 100. The limiting part 140 extends around the outer cone part 120 and surrounds the outer cone part 120 to form an insertion groove. The mounting seat 200 is inserted into the insertion groove. The limiting part 140 can limit the mounting seat 200, prevent the mounting seat 200 from shaking, and improve the connection strength and reliability between the mounting seat 200 and the conduit 100. In another embodiment of this utility model, the mounting seat 200 is bonded and fixed to the conduit 100. This simplifies the assembly process, and the bonding also ensures the reliability of the seal between the mounting seat 200 and the conduit 100, preventing air leakage.

[0038] In one embodiment of this utility model, the taper of the inner cone 310 is the same as the taper of the outer cone 120, which ensures that the inner cone 310 and the outer cone 120 fit together better when they come into contact, thereby improving the sealing effect of the air inlet 130 on the outer cone 120.

[0039] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A puncture device, characterized in that, include: The duct has an internal channel, and an outer cone portion is provided on one side of the duct. An air inlet is provided on the outer side wall of the outer cone portion, which communicates with the channel. The mounting base has an open receiving cavity at one end, which covers the outside of the outer cone portion, and a Luer interface at the other end of the mounting base. An elastic seal is disposed within the accommodating cavity. One end of the elastic seal is recessed to form an inner cone portion, and the other end is provided with an air inlet communicating with the inner cone portion. The inner cone portion abuts against the outer cone portion, and the air inlet communicates with the Luer interface.

2. The puncture device as described in claim 1, characterized in that, Multiple air inlets are provided, and the multiple air inlets are spaced apart around the axis of the outer cone.

3. The puncture device as described in claim 1, characterized in that, The diameter of the air inlet is smaller than the diameter of the Luer interface.

4. The puncture device as described in claim 1, characterized in that, The elastic seal is configured as a ring structure, with the inner cone and the air inlet located at opposite ends of the elastic seal along its axial direction.

5. The puncture device as described in claim 4, characterized in that, The resilient seal includes: The first ring portion is coaxially arranged with the outer cone portion, and the inner cone portion is located on the side of the first ring portion facing the outer cone portion; The second ring is located on the side of the first ring near the Luer interface. The second ring slides with the receiving cavity. The outer diameter of the first ring is smaller than the outer diameter of the first ring.

6. The puncture device as described in claim 1, characterized in that, The elastic seal is made of silicone.

7. The puncture device as described in claim 1, characterized in that, The outer wall of the catheter is provided with a limiting part, which extends around the outer cone and surrounds the outer cone to form an insertion groove, and the mounting seat is inserted into the insertion groove.

8. The puncture device as described in claim 1, characterized in that, The mounting base is bonded and fixed to the conduit.

9. The puncture device as described in claim 1, characterized in that, The taper of the inner cone is the same as the taper of the outer cone.

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