Puncture outfit sealing cap with anti-locking structure

Abstract

The utility model belongs to the technical field of medical instrument accessories, and particularly relates to a puncture outfit sealing cap with an anti-locking structure. The utility model provides a puncture outfit sealing cap with an anti-locking structure, which aims at solving the problem that in the prior art, when a puncture outfit needle rod is pulled out of a sleeve, the sealing cap is possibly driven by the puncture outfit needle rod to retract, so that the puncture outfit needle rod is locked in the sleeve and cannot be pulled out, and comprises a cylindrical main body with a cavity inside, one end of the cylindrical main body is fixedly connected with an annular cushion layer, the other end of the cylindrical main body is fixedly connected with a sealing layer, the sealing layer is provided with a sealing hole which is in sealing connection with a puncture outfit rod body, the sealing layer is further provided with an anti-locking structure, and the anti-locking structure is fixedly connected to the outer surface of the sealing layer. The anti-locking structure is arranged on the outer surface of the sealing layer, so that the problem that the needle rod of the puncture outfit is locked in the sleeve and cannot be pulled out is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical device accessories, and particularly relates to a puncture device sealing cap with an anti-jamming structure. Background Art

[0002] In minimally invasive human medical surgeries, once a lesion is found in the human body, surgery is required to remove it. During the surgery, laparoscopic puncture devices are usually used, and their main purpose is to establish a surgical channel for minimally invasive surgical instruments to enter and exit the abdominal cavity. When using a laparoscopic puncture device, it is necessary to ensure airtightness and gas barrier during the surgical process. In the prior art, in order to ensure the sealing performance of the puncture device, usually the sealing cap and the puncture device needle rod need to be kept in close contact. When the puncture device needle rod is pulled out from the cannula, it may cause the sealing cap to retract with the puncture device needle rod, resulting in the problem that the puncture device needle rod is jammed in the cannula and cannot be pulled out.

[0003] For example, the Chinese utility model patent application discloses a laparoscopic puncture device and its sealing cap [Application No.: CN202223348401.5]. This utility model includes a sealing cap main body part, and a conical diaphragm is connected to the sealing cap main body part. The cross-sectional area of the conical diaphragm gradually decreases in the direction away from the sealing cap main body part; a multi-layer sealing diaphragm is arranged at one end of the conical diaphragm away from the sealing cap main body part, and any layer of the sealing diaphragm can seal the conical diaphragm; the sealing diaphragm includes a plurality of lobes that are closely attached to each other, and the tops of the plurality of lobes abut against each other and form a convergence point.

[0004] Although this utility model has the advantage of being able to prevent air leakage during the insertion and extraction of surgical instruments from the sealing cap and improving the airtightness of the sealing cap, it still does not solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a puncture device sealing cap with an anti-jamming structure that can avoid the jamming problem between the sealing cap and the puncture device needle rod for the above problems.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A puncture device sealing cap with an anti-jamming structure includes a cylindrical main body with a cavity inside. One end of the cylindrical main body is fixedly connected with an annular cushion layer, and the other end is fixedly connected with a sealing layer. A sealing hole for sealing connection with the puncture device rod body is opened on the sealing layer, and an anti-jamming structure is also arranged on the sealing layer. The anti-jamming structure is fixedly connected to the outer surface of the sealing layer.

[0008] In the above-mentioned puncture device sealing cap with an anti-jamming structure, the anti-jamming structure includes ribs fixedly connected to the outer surface of the sealing layer, and the ribs extend along the radial direction of the sealing layer.

[0009] In the above-mentioned puncture device sealing cap with an anti-jamming structure, a plurality of ribs are provided, and they are evenly distributed circumferentially along the axis of the sealing layer.

[0010] In the above-mentioned puncture device sealing cap with an anti-jamming structure, the surface of the rib away from the sealing layer is arc-shaped, and the cross-sectional area of the rib gradually increases from one end close to the sealing hole to the other end.

[0011] In the above-mentioned puncture device sealing cap with an anti-jamming structure, the anti-jamming structure includes an annular convex ring fixedly connected to the sealing layer and protruding from the outer surface of the sealing layer.

[0012] In the above-mentioned puncture device sealing cap with an anti-jamming structure, a plurality of the annular convex rings are concentrically arranged, and the centers of the annular convex rings are located on the axis of the sealing layer.

[0013] In the above-mentioned puncture device sealing cap with an anti-jamming structure, the axis of the sealing hole coincides with the axis of the cylindrical main body, and the diameter of the sealing hole is smaller than the diameter of the opening of the cylindrical main body near the cushion layer.

[0014] In the above-mentioned puncture device sealing cap with an anti-jamming structure, a bulging part is further provided at one end of the cylindrical main body close to the cushion layer. The outer diameter of the bulging part is larger than the outer diameter of the cylindrical main body. The cushion layer is fixedly connected to the bulging part, and the cylindrical main body and the bulging part are connected through a flared flaring structure.

[0015] Compared with the existing technology, the advantages of the present utility model are as follows:

[0016] 1. The present utility model is provided with an anti-jamming structure on the outer surface of the sealing layer. The anti-jamming structure can enhance the strength of the sealing layer to prevent the sealing layer from curling inward when the needle rod of the puncture device is pulled out, or can make a gap still remain between the curled sealing layer and the surface of the needle rod of the puncture device and thus they cannot fit tightly, thereby preventing the problem that the needle rod of the puncture device is jammed in the sleeve and cannot be pulled out.

[0017] 2. The structure of the present utility model is simple, the change to the structure of the original puncture device sealing cap is small, the production cost is low, and it is suitable for large-scale popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present utility model assembled to a puncture device;

[0019] Figure 2 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0020] In the figure: cylindrical main body 1, cushion layer 2, sealing layer 3, sealing hole 4, anti-jamming structure 5, bulged part 6, flared structure 7, rib 51, puncture rod body 100. Specific embodiments

[0021] The following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] This embodiment provides a puncture device sealing cap with an anti-jamming structure. As shown in Figure 1 and Figure 2 , it includes a cylindrical main body 1 with a cavity inside. One end of the cylindrical main body 1 is fixedly connected with an annular cushion layer 2, and the other end is fixedly connected with a sealing layer 3. A sealing hole 4 for sealing connection with the puncture rod body 100 is formed on the sealing layer 3. An anti-jamming structure 5 is further provided on the sealing layer 3, and the anti-jamming structure 5 is fixedly connected to the outer surface of the sealing layer 3.

[0024] In the present utility model, during use, the puncture rod body 100 penetrates through the cylindrical main body 1 and extends out from the sealing hole 4. At this time, the side surface of the sealing hole 4 is pressed against the side wall of the puncture rod body 100 to form a seal. After the puncture is completed, the puncture rod body 100 is pulled out. At this time, due to the setting of the anti-jamming structure 5, it can prevent the sealing layer 3 from being driven by the puncture rod body 100 to roll inward, or after the sealing layer 3 rolls inward, the anti-jamming structure 5 is located between the puncture rod body 100 and the sealing layer 3, making the two unable to fit tightly. Therefore, the present utility model is provided with an anti-jamming structure 5 on the outer surface of the sealing layer 3. The anti-jamming structure 5 can enhance the strength of the sealing layer 3 to prevent the sealing layer 3 from rolling inward when the puncture needle rod 100 is pulled out, or after the sealing layer 3 rolls, there is still a gap with the surface of the puncture needle rod 100 and they cannot fit tightly, thereby preventing the problem that the puncture needle rod 100 is stuck in the sleeve and cannot be pulled out.

[0025] As shown in Figure 2 , the anti-jamming structure 5 includes ribs 51 fixedly connected to the outer surface of the sealing layer 3, and the ribs 51 extend along the radial direction of the sealing layer 3. The ribs 51 arranged along the radial direction can effectively improve the strength of the sealing layer 3 and resist the external force when rolling inward.

[0026] Preferably, a plurality of ribs 51 are provided, and they are evenly distributed circumferentially along the axis of the sealing layer 3. This can ensure that the strengthening force is distributed more evenly.

[0027] Preferably, the surface of the rib 51 away from the sealing layer 3 is arc-shaped, and the cross-sectional area of the rib 51 gradually increases from one end close to the sealing hole 4 to the other end. Designing the upper surface of the rib 51 as arc-shaped and combining with the fact that there are several ribs 51 can ensure that even if the sealing layer 3 is turned up, the puncture needle rod 100 can be supported by the sides of two adjacent ribs 51 to prevent the puncture needle rod 100 from closely fitting with the inner surface of the sealing layer 3.

[0028] As Figure 2 shown, the axis line of the sealing hole 4 coincides with the axis line of the cylindrical main body 1, and the diameter of the sealing hole 4 is smaller than the diameter of the opening of the cylindrical main body 1 at the end close to the cushion layer 2.

[0029] As Figure 2 shown, one end of the cylindrical main body 1 close to the cushion layer 2 is further provided with a bulging part 6. The outer diameter of the bulging part 6 is larger than the outer diameter of the cylindrical main body 1. The cushion layer 2 is fixedly connected to the bulging part 6. The cylindrical main body 1 and the bulging part 6 are connected through a flared opening structure 7. The thickness at the flared opening structure 7 is set to be smaller than the thickness of the cylindrical main body 1. This can ensure that the cylindrical main body 1 still has a certain degree of freedom to swing laterally after installation to facilitate the adaptation when the puncture needle rod 100 penetrates.

[0030] Example 2

[0031] This embodiment provides a puncture seal cap with an anti-jamming structure. The structure of this embodiment is generally the same as that in Embodiment 1, except for the specific structure of the anti-jamming structure 5. Specifically, the anti-jamming structure 5 includes an annular convex ring (not shown in the figure) fixedly connected to the sealing layer 3 and protruding from the outer surface of the sealing layer 3. Preferably, a plurality of the annular convex rings are concentrically arranged, and the centers of the annular convex rings are located on the axis line of the sealing layer 3. The arrangement of the annular convex rings can ensure that after the sealing layer 3 is turned inward, the side surface of the puncture needle rod 100 is supported by the annular convex rings and does not closely fit with the inner surface of the sealing layer 3.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0033] Although terms such as cylindrical main body 1, cushion layer 2, sealing layer 3, sealing hole 4, anti-jamming structure 5, bulged portion 6, flared trumpet-shaped structure 7, rib 51, puncture rod body 100, etc. are used more frequently in this text, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any kind of additional limitation is contrary to the spirit of the present utility model.

Claims

1. A trocar sealing cap with an anti-stuck structure, comprising a cylindrical body (1) with a cavity inside, one end of the cylindrical body (1) is fixedly connected to a cushion layer (2) in the shape of a circular ring, and the other end is fixedly connected to a sealing layer (3), and the sealing layer (3) is provided with a sealing hole (4) sealedly connected to a trocar rod (100), characterized in that: The sealing layer (3) is also provided with an anti-jamming structure (5), and the anti-jamming structure (5) is fixedly connected to the outer surface of the sealing layer (3).

2. A trocar sealing cap with an anti-stuck structure according to claim 1, characterized in that: The anti-jamming structure (5) comprises ribs (51) fixedly connected to the outer surface of the sealing layer (3), and the ribs (51) extend in the radial direction of the sealing layer (3).

3. A trocar sealing cap with an anti-stuck structure according to claim 2, characterized in that: A plurality of ribs (51) are provided and are evenly distributed along the circumference of the axis of the sealing layer (3).

4. A trocar sealing cap with an anti-stuck structure according to claim 2, characterized in that: The surface of the rib (51) on one side away from the sealing layer (3) is in an arc shape, and the cross-sectional area of ​​the rib (51) gradually increases from one end close to the sealing hole (4) to the other end.

5. The trocar sealing cap with an anti-stuck structure according to claim 1, characterized in that: The anti-jamming structure (5) comprises an annular convex ring fixedly connected to the sealing layer (3) and protruding from the outer surface of the sealing layer (3).

6. A trocar sealing cap with an anti-stuck structure according to claim 5, characterized in that: A plurality of annular protrusions are concentrically arranged, and the centers of the annular protrusions are located on the axial center line of the sealing layer (3).

7. The trocar sealing cap with an anti-stuck structure according to claim 1, characterized in that: The axis center line of the sealing hole (4) coincides with the axis center line of the cylindrical body (1), and the diameter of the sealing hole (4) is smaller than the diameter of the opening of the cylindrical body (1) at one end close to the cushion layer (2).

8. The trocar sealing cap with an anti-stuck structure according to claim 1, characterized in that: An enlarged portion (6) is also provided at one end of the cylindrical body (1) close to the cushion layer (2); the outer diameter of the enlarged portion (6) is larger than the outer diameter of the cylindrical body (1); the cushion layer (2) is fixedly connected to the enlarged portion (6); and the cylindrical body (1) and the enlarged portion (6) are connected via a trumpet-shaped expansion structure (7).

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