Puncture outfit sealing cap

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a puncture outfit sealing cap. The utility model provides a puncture outfit sealing cap which aims at solving the problem that in the prior art, an operation puncture outfit sealing cap with good structural stability needs to be provided, and the puncture outfit sealing cap comprises an annular base and is characterized in that an instrument channel is formed in the annular base, a circle of sealing ring is arranged on the outer edge of the instrument channel in a surrounding mode, and the sealing ring is connected with the annular base. The sealing ring is connected with the annular base through a guide structure, and the annular base, the guide structure and the sealing ring are integrally formed. The puncture outfit sealing cap is stable in structure, high in deformation resistance and not prone to being broken. And the risk that the sealing cap is punctured is reduced through a special guide structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a sealing cap of a puncture device. Background Art

[0002] Laparoscopic surgery is the mainstream of minimally invasive surgery and has broad development prospects in the future. In laparoscopic surgery, the introduction of various instruments and tools in the puncture device into the abdominal cavity and the formation of pressure in the abdominal cavity are mainly completed by the sealing cap. Most of the sealing caps of puncture devices on the market are multi-valve types. The structural design is characterized by thinness and flexibility. In actual assembly, they are assembled from multiple valves. The overall strength is relatively weak and they are easily punctured by instruments when entering and exiting the instruments. In mild cases, they are prone to air leakage, and in severe cases, they are easily torn, causing block fragments to fall into the body and cause adverse events. Therefore, it is urgent to provide an integrated puncture device sealing cap with better structural stability to improve surgical safety.

[0003] For example, a Chinese utility model patent discloses a trocar sealing cap with edges [application number: CN201520670163.0]. The utility model comprises a cylindrical body made of elastic material, one end of which is open, and the other end of which has a foldable sealing structure, and when the endoscope is inserted into the foldable sealing structure, the endoscope is in circumferential sealing contact with the foldable sealing structure, characterized in that the cylindrical body is provided with a plurality of inclined ridges extending obliquely downward from the middle of the cylindrical body and radially contracting to the foldable sealing structure, the inclined ridges are evenly distributed in the circumferential direction, and before the front end of the endoscope moves to the position of the foldable sealing structure, the front end of the endoscope acts on the inclined ridges to put the foldable sealing structure in an open state.

[0004] Although the utility model has the advantages of preventing blood from contaminating the lens and having good sealing properties, thereby reducing the negative impact on the operation, it still adopts a multi-petal structure, so the problem of being easily punctured by the instrument when entering and exiting the instrument still exists. Utility Model Content

[0005] The utility model aims to solve the above problems and provide a puncture device sealing cap which can effectively reduce the probability of being punctured by an instrument.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a trocar sealing cap, comprising an annular base, wherein the annular base has an instrument channel, the outer edge of the instrument channel is surrounded by a sealing ring, the sealing ring is connected to the annular base through a guide structure, and the annular base, the guide structure and the sealing ring are integrally formed.

[0008] In the above-mentioned trocar sealing cap, the guide structure includes at least one guide slope, and the included angle between the guide slope and the axial centerline direction of the instrument channel is less than 90 degrees.

[0009] In the above-mentioned puncture device sealing cap, the guiding inclined surface includes a first inclined surface and a second inclined surface connected to each other, an end of the first inclined surface away from the second inclined surface is fixedly connected to the annular base, an end of the second inclined surface away from the first inclined surface is fixedly connected to the sealing ring, and an angle between the first inclined surface and the axis direction of the instrument channel is greater than an angle between the second inclined surface and the axis direction of the instrument channel.

[0010] In the above-mentioned trocar sealing cap, the back side of the guide structure is provided with equally distributed reinforcing ribs.

[0011] In the above-mentioned trocar sealing cap, the number of reinforcing ribs on the back side of the guide structure is odd.

[0012] In the above-mentioned trocar sealing cap, one end of the reinforcing rib is arranged on the back side of the first inclined surface, and the other end extends to the back side of the second inclined surface.

[0013] In the above-mentioned puncture device sealing cap, the thickness of the first bevel is not less than 0.35 mm, and the thickness of the second bevel is not greater than 0.35 mm; the angle of the first inner surface relative to the horizontal plane where the first bevel and the second bevel are connected is 95-105°, and the angle of the second inner surface relative to the horizontal plane where the first bevel and the second bevel are connected is 70-80°.

[0014] In the above-mentioned trocar sealing cap, the thickness of the first bevel is 0.35-0.38 mm, and the thickness of the second bevel is 0.31-0.35 mm.

[0015] In the above-mentioned trocar sealing cap, a supporting sheet is provided inside the sealing ring.

[0016] In the above-mentioned trocar sealing cap, the annular base has evenly distributed mounting holes for achieving fixation with the trocar.

[0017] In the above-mentioned trocar sealing cap, the sealing material in the sealing ring can be silicone.

[0018] Compared with the existing technology, the advantages of the utility model are:

[0019] 1. The sealing cap of the puncture device provided by the utility model adopts an integrated molding manufacturing process, which improves the overall strength and reduces the risk of breakage during surgery.

[0020] 2. The sealing cap of the puncture device provided by the utility model adopts a guiding structure, which reduces the probability of the sealing cap being punctured by the instrument.

[0021] 3. The trocar sealing cap guide structure provided by the utility model is composed of two inclined surfaces with different inclination angles and evenly distributed reinforcing ribs, which can strengthen the overall strength of the guide structure and prevent the sealing cap from being pulled out by the instrument and causing stagnation or jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a structural schematic diagram of another viewing angle of the utility model;

[0024] In the figure: an annular base 1, an instrument channel 2, a sealing ring 3, a guide structure 4, a guide slope 5, a reinforcing rib 6, a support sheet 7, a mounting hole 8, a first slope 51, a second slope 52, a first inner surface 511, and a second inner surface 521. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The utility model is a sealing cap for a puncture device, combined with Figure 1 and Figure 2 As shown, the annular base 1 has an instrument channel 2, and a sealing ring 3 surrounds the outer edge of the instrument channel 2. The sealing ring 3 is connected to the annular base 1 through a guide structure 4. The annular base 1, the guide structure 4 and the sealing ring 3 are integrally formed.

[0027] In the present utility model, when in use, the sealing cap as a whole is connected to the inside of the trocar through the annular base 1, and the surgical instrument is inserted into the instrument channel 2 through the guiding effect of the guide structure 4, and penetrates into the patient's abdominal cavity for surgery. When the surgical instrument is located in the instrument channel 2, the inner wall of the sealing ring 3 is close to the outer wall of the surgical instrument, thereby playing a sealing role. Therefore, the trocar sealing cap provided by the present utility model has a guiding structure 4, which can play a guiding role when the surgical instrument is inserted, preventing the end of the surgical instrument from having hard contact with the sealing cap, reducing the probability of the instrument puncturing the sealing cap, and at the same time, the trocar sealing cap adopts an integrated molding method, which improves the overall strength and reduces the risk of fragmentation during surgery.

[0028] The annular base has evenly distributed mounting holes 8 for fixing the sealing cap and the puncture device.

[0029] In order to play a better guiding role and optimize the overall structural strength, the guiding structure 4 adopts a design of a first slope 51 and a second slope 52 connected to each other. The end of the first slope 51 away from the second slope 52 is fixedly connected to the annular base 1, and the end of the second slope 52 away from the first slope 51 is fixedly connected to the sealing ring 3. The angle between the first slope 51 and the axial direction of the instrument channel 2 is greater than the angle between the second slope 52 and the axial direction of the instrument channel 2.

[0030] Preferably, the angle of the first inner surface 511 relative to the horizontal plane where the first inclined surface 51 and the second inclined surface 52 are connected is 95-105°, and the angle of the second inner surface 521 relative to the horizontal plane where the first inclined surface 51 and the second inclined surface 52 are connected is 70-80°.

[0031] Preferably, the thickness of the first inclined surface 51 is 0.35-0.38 mm, and the thickness of the second inclined surface 52 is 0.31-0.35 mm.

[0032] Preferably, the sealing ring is filled with silicone seal, and when in use, the puncture force is used to forcefully break the instrument channel to connect the inside and outside of the puncture device. Because the guide structure 4 is made of highly elastic soft material and cooperates with the reinforcing rib 6, it has a strong deformation recovery ability, so when switching surgical instruments with different outer diameters during surgery, there is no need to replace the sealing cap, ensuring the airtightness and stability during the surgery.

[0033] In order to further improve the overall strength of the guide structure 4 and improve the tear resistance to prevent the sealing cap from being pulled out by the instrument and causing stagnation or jamming, the outer surface of the guide structure 4 is provided with equally distributed reinforcing ribs 6, which are integrally formed with the guide structure 4, wherein one end of the reinforcing rib 6 is arranged on the back of the first inclined surface 51, and the other end extends to the back of the second inclined surface 52. The number of reinforcing ribs 6 is odd, which provides a better mechanical effect.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although the present invention uses more terms such as annular base 1, instrument channel 2, sealing ring 3, guide structure 4, guide slope 5, reinforcing rib 6, support sheet 7, mounting hole 8, first slope 51, second slope 52, first inner surface 511, second inner surface 521, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A trocar sealing cap, comprising an annular base (1), characterized in that: The annular base (1) has an instrument channel (2) therein, and the outer edge of the instrument channel (2) is surrounded by a sealing ring (3). The sealing ring (3) and the annular base (1) are connected via a guide structure (4), and the annular base (1), the guide structure (4) and the sealing ring (3) are integrally formed.

2. A trocar sealing cap according to claim 1, characterized in that: The guiding structure (4) comprises at least one guiding inclined surface (5), and the angle between the guiding inclined surface (5) and the axis direction of the instrument channel (2) is less than 90 degrees.

3. A trocar sealing cap according to claim 2, characterized in that: The guiding inclined surface (5) comprises a first inclined surface (51) and a second inclined surface (52) which are connected to each other; an end of the first inclined surface (51) away from the second inclined surface (52) is fixedly connected to the annular base (1); an end of the second inclined surface (52) away from the first inclined surface (51) is fixedly connected to the sealing ring (3); and an angle between the first inclined surface (51) and the axis of the instrument channel (2) is greater than an angle between the second inclined surface (52) and the axis of the instrument channel (2).

4. A trocar sealing cap according to any one of claims 1 to 3, characterized in that: The back side of the guide structure (4) is provided with equally distributed reinforcing ribs (6).

5. A trocar sealing cap according to claim 4, characterized in that: The number of reinforcing ribs (6) on the back side of the guide structure (4) is odd.

6. A trocar sealing cap according to claim 4, characterized in that: One end of the reinforcing rib (6) is arranged on the back side of the first inclined surface (51), and the other end extends to the back side of the second inclined surface (52).

7. A trocar sealing cap according to claim 3, characterized in that: The thickness of the first inclined surface (51) is not less than 0.35 mm, and the thickness of the second inclined surface (52) is not greater than 0.35 mm; the angle of the first inner surface (511) inside the first inclined surface (51) relative to the horizontal plane where the first inclined surface (51) and the second inclined surface (52) are connected is 95-105°, and the angle of the second inner surface (521) inside the second inclined surface (52) relative to the horizontal plane where the first inclined surface (51) and the second inclined surface (52) are connected is 70-80°.

8. A trocar sealing cap according to claim 7, characterized in that: The thickness of the first inclined surface (51) is 0.35-0.38 mm, and the thickness of the second inclined surface (52) is 0.31-0.35 mm.

9. A trocar sealing cap according to claim 8, characterized in that: A supporting sheet (7) is provided inside the sealing ring (3).

10. The sealing cap of a trocar according to claim 1, characterized in that: The annular base (1) has evenly distributed mounting holes (8); the sealing material in the sealing ring (3) is silica gel.

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