Sealing device of puncture outfit

Abstract

The utility model relates to the technical field of medical instruments, and discloses a sealing device of a puncture outfit, which comprises a puncture seat main body and a middle seat fixedly arranged on the puncture seat respectively, the middle seat is fixedly connected with a connecting seat, a soft sealing cap is arranged on the connecting seat, an extrusion component is arranged outside the soft sealing cap, and the extrusion component is connected with the middle seat. And the extrusion assembly can inwards extrude the soft sealing cap under the action of external force. According to the flexible sealing cap, the sealing performance of the flexible sealing cap on the puncture outfit inserted into the flexible sealing cap can be improved through an active pressurizing measure, the sealing performance of the puncture outfit in the using process is further guaranteed, and the air leakage phenomenon is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a sealing device for a puncture device. Background Art

[0002] In minimally invasive human medical surgery, once a disease is found in the human body, surgery or resection is required. During the operation, the first thing to be used is a trocar, which is a surgical instrument that pierces the abdominal wall and provides a channel for other surgical instruments to enter the body cavity. However, the current trocar sealing device mainly relies on the material properties of the sealing component itself to fit and seal during use, which has problems such as poor sealing effect and easy leakage, thus affecting the progress and effect of the operation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a sealing device for a trocar, which solves the problem that the sealing device of the prior art trocar has poor sealing effect and is prone to air leakage during use because it mainly uses the material properties of the sealing component for sealing.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A sealing device of a puncture device comprises a puncture seat body and an intermediate seat respectively fixedly arranged on the puncture seat, wherein the intermediate seat is fixedly connected to a connecting seat, a soft sealing cap is installed on the connecting seat, and an extrusion component is arranged on the outside of the soft sealing cap, and the extrusion component can squeeze the soft sealing cap inward under the action of external force.

[0008] Preferably, the extrusion assembly includes a screw sleeve, which is threadably connected to the soft sealing cap via a connecting thread, and a slope is provided on the contact surface between the soft sealing cap and the screw sleeve, so that the screw sleeve always squeezes the soft sealing cap inwards during the downward movement.

[0009] Preferably, a screwing assembly for facilitating manual screwing is provided on the outside of the screwing sleeve.

[0010] Preferably, the intermediate seat and the connecting seat bracket are arranged with an openable and closable sealing component. When the puncture device is not inserted into the puncture seat body, the openable and closable sealing component seals and covers the open end of the lower part of the connecting seat. After the puncture device is pulled out of the puncture seat body, the openable and closable sealing component resets and seals and covers the open end of the lower part of the connecting seat again.

[0011] Preferably, the openable and closable sealing assembly includes an anti-scratch plate and sealing strips fixedly connected to both ends of the anti-scratch plate, one of the sealing strips is fixedly connected to the inner cavity of the intermediate seat through a fixing block, the inner cavity of the intermediate seat is fixedly connected with a snap-fit ​​seat, one end of the other sealing strip is snap-fitted in the snap-fit ​​seat, the snap-fit ​​seat is provided with a snap-fit ​​groove that matches the sealing strip, an elastic strip is fixedly connected to the inner cavity wall of the puncture seat body, and one end of the elastic strip is fixedly connected to the anti-scratch plate.

[0012] Preferably, a puncture tube is installed at the lower part of the puncture seat body through a puncture tube seat, and a pressure relief valve is arranged on the puncture seat body.

[0013] (III) Beneficial effects

[0014] The utility model has the following beneficial effects:

[0015] The sealing device of the puncture device is equipped with a squeezing assembly, so that when other medical puncture instruments pass through the soft sealing cap, the soft sealing cap can be squeezed inward by the squeezing assembly, so that the central hole of the soft sealing cap is pressurized and fitted with the surface of other medical puncture instruments, thereby further improving the sealing performance of the soft sealing cap for the puncture instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the screw sleeve and the soft sealing cap of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the openable and closable sealing component of the utility model in the open state.

[0019] In the figure: 1. Puncture seat body; 2. Middle seat; 20. Openable and closable sealing component; 21. Fixed block; 22. Sealing strip; 23. Anti-scratch plate; 24. Elastic strip; 25. Snap-fit ​​seat; 26. Snap-fit ​​groove; 3. Connecting seat; 4. Soft sealing cap; 40. Extrusion component; 41. Screw sleeve; 42. Extending handle; 43. Slope; 44. Connecting thread; 5. Puncture tube seat; 6. Puncture tube; 7. Pressure relief valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 The utility model provides a technical solution: a sealing device of a puncture device, including a puncture seat body 1 and an intermediate seat 2 respectively fixedly arranged on the puncture seat, the intermediate seat 2 is fixedly connected to a connecting seat 3, a soft sealing cap 4 is installed on the connecting seat 3, and an extrusion component 40 is arranged outside the soft sealing cap 4, and the extrusion component 40 can squeeze the soft sealing cap 4 inward under the action of external force.

[0022] The utility model provides an extrusion assembly 40 so that when other medical puncture instruments pass through the soft sealing cap 4, the soft sealing cap 4 can be squeezed inward by the extrusion assembly 40, so that the center hole of the soft sealing cap 4 is pressurized and fitted with the surface of other medical puncture instruments, thereby further improving the sealing performance of the soft sealing cap 4 for the puncture instruments.

[0023] Reference Figure 2 As shown, in this embodiment, the extrusion assembly 40 includes a screw sleeve 41, which is threadedly connected to the soft sealing cap 4 through a connecting thread 44, and a slope 43 is provided on the contact surface between the soft sealing cap 4 and the screw sleeve 41. The screw sleeve 41 always presses the soft sealing cap 4 inward during the downward movement. When the entire device faces puncture instruments of different diameters, the personnel can change the squeezing force on the soft sealing cap 4 by twisting the screw sleeve 41, so as to allow the puncture instruments of different diameters to pass through the soft sealing cap 4 later.

[0024] Reference Figure 2 As shown, in this embodiment, a screwing assembly that is convenient for manual screwing is provided on the outside of the screwing sleeve 41. During the process of adjusting the screwing sleeve 41, a person can manually hold the screwing assembly to rotate and adjust the screwing sleeve 41. The screwing assembly can be a groove or protrusion provided on the outer surface of the screwing sleeve 41 to increase the friction force, or an independently extended handle 42, etc., which is convenient for people to hold.

[0025] Reference Figure 1 and 3 As shown, in this embodiment, the intermediate seat 2 and the connecting seat 3 bracket are arranged with an openable and closable sealing component 20. When the puncture device is not inserted into the puncture seat body 1, the openable and closable sealing component 20 seals and covers the open end of the lower part of the connecting seat 3. After the puncture device is pulled out of the puncture seat body 1, the openable and closable sealing component is reset and seals and covers the open end of the lower part of the connecting seat 3 again. Due to the action of the openable and closable sealing component 20, the entire puncture seat body 1 can have good sealing performance in combination with the soft sealing cap 4 when no puncture is inserted, and after the puncture device is pulled out, the openable and closable sealing component 20 seals and covers the inner cavity of the entire puncture seat body 1 again, effectively isolating the entire puncture tube 6 from the external environment, and preventing external factors from affecting the human body wound after puncture.

[0026] Reference Figure 1 and 3 As shown, in this embodiment, the openable and closable sealing assembly 20 includes an anti-scratch plate 23 and a sealing strip 22 fixedly connected to both ends of the anti-scratch plate 23, one sealing strip 22 is fixedly connected to the inner cavity of the middle seat 2 through a fixing block 21, the inner cavity of the middle seat 2 is fixedly connected with a snap seat 25, one end of the other sealing strip 22 is snap-fitted and arranged in the snap seat 25, and the snap seat 25 is arranged with a snap groove 26 that snaps with the sealing strip 22, and an elastic strip 24 is fixedly connected to the inner cavity wall of the puncture seat body 1, and one end of the elastic strip 24 is fixedly connected to the anti-scratch plate 23. When a puncture tool is inserted into the inner cavity of the puncture seat, the puncture tool will first contact the anti-scratch plate 23, thereby causing one sealing strip 22 to disengage from the snap groove 26, while the other sealing strip 22 is deformed, and the elastic strip 24 is deformed under pressure. When the puncture tool completes the puncture of the human body, the sealing strip 22 and the elastic strip 24 are at the maximum deformation position. After the puncture device is pulled out, the elastic strip 24 and a sealing strip 22 near the elastic strip 24 need to be restored to their original state, thereby driving the anti-scratch plate 23 and the other sealing strip 22 to seal and cover the lower opening end of the connecting seat 3 again. Due to the arrangement of the elastic strip 24, it is effectively prevented that a single sealing strip 22 made of sealing material may have weak elastic force or be damaged after multiple deformation and reset processes, and the insufficient elastic force affects the sealing performance of the entire openable and closable component to the puncture seat body 1.

[0027] In this embodiment, a puncture tube 6 is installed at the lower part of the puncture seat body 1 through a puncture tube seat 5, and a pressure relief valve 7 is arranged on the puncture seat body 1.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a puncture device, comprising a puncture seat body and an intermediate seat respectively fixedly arranged on the puncture seat, wherein the intermediate seat is fixedly connected to a connecting seat, and a soft sealing cap is installed on the connecting seat, characterized in that: The outside of the soft sealing cap is provided with an extrusion component, and the extrusion component can press the soft sealing cap inwardly under the action of external force.

2. A sealing device for a trocar according to claim 1, characterized in that: The extrusion assembly comprises a screw sleeve, which is threadably connected to the soft sealing cap via a connecting thread. The contact surface between the soft sealing cap and the screw sleeve is provided with a slope. The screw sleeve always squeezes the soft sealing cap inwards during the downward movement.

3. A sealing device for a trocar according to claim 2, characterized in that: The outside of the screw sleeve is provided with a screwing assembly which is convenient for manual screwing.

4. A sealing device for a trocar according to claim 1 or 2, characterized in that: The intermediate seat and the connecting seat bracket are arranged with an openable and closable sealing component. When the puncture device is not inserted into the puncture seat body, the openable and closable sealing component seals and covers the open end of the lower part of the connecting seat. After the puncture device is pulled out of the puncture seat body, the openable and closable sealing component resets and seals and covers the open end of the lower part of the connecting seat again.

5. The sealing device of a trocar according to claim 4, characterized in that: The openable and closable sealing assembly includes an anti-scratch plate and sealing strips fixedly connected to both ends of the anti-scratch plate, one of the sealing strips is fixedly connected to the inner cavity of the middle seat through a fixing block, the inner cavity of the middle seat is fixedly connected to a snap-fit ​​seat, one end of the other sealing strip is snap-fitted in the snap-fit ​​seat, the snap-fit ​​seat is provided with a snap-fit ​​groove that matches the sealing strip, an elastic strip is fixedly connected to the inner cavity wall of the puncture seat body, and one end of the elastic strip is fixedly connected to the anti-scratch plate.

6. A sealing device for a trocar according to claim 5, characterized in that: A puncture tube is installed at the lower part of the puncture seat body through a puncture tube seat, and a pressure relief valve is arranged on the puncture seat body.

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