CN218870425U - Puncture sheath and protection device thereof - Google Patents

Abstract

The utility model relates to a puncture sheath and a protective device thereof, wherein the puncture sheath includes a sheath tube structure, an expansion structure and a puncture structure, the sheath tube structure includes a sheath tube and a sheath tube joint connected to the tail end of the sheath tube, and the sheath tube joint includes a connected The first cavity and the second cavity, the first cavity is an instrument penetration channel for the expansion structure and the puncture structure to pass through, the second cavity is a negative pressure channel, and the protection device includes a first protective cover that shares the first opening , the second protective cover, so that after the protective device is sleeved on the sheath tube joint through the first opening, the first protective cover can be sleeved on the first cavity and the expansion structure and the puncture structure outside the first cavity, and allow The second protective sleeve is sheathed to the second cavity. The puncture sheath and its protection device of the utility model can protect the puncture sheath, prevent the puncture sheath from being polluted, and prevent pollutants from the external environment from entering the patient's body through the puncture sheath and causing harm to the patient.

Description

A puncture sheath and its protective device

technical field

The utility model relates to the field of surgical instruments, in particular to a puncture sheath and a protective device thereof.

Background technique

With the development and progress of science and technology, modern surgery is gradually developing towards minimally invasive techniques. Minimally invasive surgery can not only reduce surgical complications, but also improve the safety and success rate of surgery. The puncture sheath is a commonly used minimally invasive surgical instrument. In the operation, the puncture needle is usually used to feed the guide wire first, then the puncture needle is drawn out to expand with a dilator, and finally the dilator is drawn out and the puncture sheath is inserted to operate through the cavity of the puncture sheath . The operation needs to be punctured and expanded successively, and finally the sheath can be inserted. The operation time is long, and the puncture sheath needs to be left in the patient's body for a period of time to fully expand and facilitate subsequent operations.

In the foregoing cases, the doctor's operation is intensive, and the patient suffers a relatively large injury. In addition, the puncture sheath needs to be left in the patient's body for a period of time, and the part of the puncture sheath structure exposed outside the body is at risk of being polluted by airborne bacteria and other pollutants, especially at the joints of the puncture sheath components, where there are gaps, and pollutants are more likely to Enter the puncture sheath through the gap, and then enter the patient's body through the cavity of the puncture sheath, causing damage to the patient.

Utility model content

The technical problem to be solved by the utility model is to provide a puncture sheath and its protection device for the above-mentioned defects of the prior art.

The technical solution adopted by the utility model to solve the technical problems is: to design a protective device for the puncture sheath, wherein the puncture sheath includes a sheath structure, an expansion structure and a puncture structure, and the sheath structure includes a sheath and is connected to the The sheath tube connector at the tail end of the sheath tube, the sheath tube connector includes a connected first cavity and a second cavity, the first cavity is an instrument penetration channel for the expansion structure and the puncture structure to pass through , the second cavity is a negative pressure channel;

The protective device includes a first protective sheath and a second protective sheath sharing the first opening, so that after the protective device is sheathed to the sheath joint through the first opening, the first protective sheath can It is provided on the first cavity, the expansion structure outside the first cavity, and the puncture structure, and the second protective sheath is sheathed on the second cavity.

In some embodiments, the protective device further includes a sleeve extending from the first opening.

In some embodiments, the first protective cover and the second protective cover are plastic materials.

A puncture sheath, including the protective device, a sheath structure, an expansion structure, and a puncture structure;

The expansion structure is punctured in the sheath structure, and the puncture structure is punctured in the expansion structure;

The first protective sheath of the protective device is sheathed on the first cavity, the puncture structure and the expansion structure outside the first cavity, and the second protective sheath is sheathed on the first cavity. On the second cavity, the first opening is sheathed to the sheath joint to be isolated from the outside.

In some embodiments, the expansion structure includes an expansion tube and an expansion tube joint, the expansion tube joint is connected to the outer end of the expansion tube, the expansion tube joint is located outside the first cavity, and the expansion tube is hollow;

The puncture structure includes a puncture needle and a puncture needle connector, the puncture needle connector is connected to the outer end of the puncture needle, the puncture needle connector is located outside the first cavity, and the puncture needle is hollow.

In some embodiments, the expansion tube is passed through the sheath tube, the puncture end of the expansion tube protrudes from the sheath tube, and the expansion tube joint is movably connected with the sheath tube joint.

In some embodiments, the puncture needle is punctured in the expansion tube, the puncture end of the puncture needle protrudes from the expansion tube, and the puncture needle joint is movably connected with the expansion tube joint.

In some embodiments, one end of the first cavity is further provided with a second opening for the instrument to pass through, and a sealing sleeve is provided on the second opening, so that after the instrument passes through the second opening, the The second opening is sealed.

In some embodiments, one end of the second cavity is provided with a third opening for the liquid to flow out.

In some embodiments, the outer surfaces of the first cavity and the second cavity are provided with anti-slip structures to prevent the first protective cover and the second protective cover from falling off.

A puncture sheath and its protection device implementing the utility model have the following beneficial effects: when the puncture sheath penetrates into the patient's body and is placed in place, the protection device is sleeved on the sheath tube structure, puncture structure and expansion structure exposed outside the body, The puncture sheath is isolated from the external environment to prevent the puncture sheath from being polluted, and prevent the pollutants from the external environment from entering the patient's body through the puncture sheath and causing harm to the patient.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the schematic diagram of a kind of puncture sheath and its protective device in the embodiment of the present utility model;

Fig. 2 is an exploded schematic view of a puncture sheath and its protective device in an embodiment of the present invention;

Fig. 3 is a schematic diagram of an expansion structure in a puncture sheath and its protective device in an embodiment of the present invention;

Fig. 4 is a schematic diagram of a puncture structure in a puncture sheath and its protective device in an embodiment of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 4, a puncture sheath in this embodiment includes a sheath structure 1, an expansion structure 2, a puncture structure 3 and a protection device 4, the puncture structure 3 is set in the expansion structure 2, and the expansion structure 2 is pierced in the sheath structure 1.

The sheath structure 1 includes a sheath tube 11 and a sheath tube joint 12 connected to the tail end of the sheath tube. The sheath tube joint 12 includes a connected first cavity 121 and a second cavity 122. The first cavity 121 is an instrument insertion channel. For the expansion structure 2 and the puncture structure 3 to pass through, the second cavity 122 is a negative pressure channel for liquid and other substances to be discharged from the body.

The protective device 4 includes a first protective sheath 41 and a second protective sheath 42 that share the first opening 411 . On the expansion structure 2 and the puncture structure 3 outside the first cavity 121, the second protective cover 42 is sleeved on the second cavity 122, and the first opening 411 is sleeved on the sheath joint 12, so that the sheath joint 12 is in contact with the outside isolation to prevent the external environment from polluting the sheath tube connector 12, thereby causing harm to the patient.

In this embodiment, the protection device 4 further includes a sleeve 43 extending from the first opening 411. The sleeve 43 is sheathed on the sheath joint 12, and the sleeve 43 is interference-fitted with the sheath joint 12 to prevent the first The protective cover 41 and the second protective cover 42 fall off.

Further, the first protective sheath 41 and the second protective sheath 42 are plastic materials, so that the first protective sheath 41 is sheathed in the first cavity 121 and the expansion structure 2 and the puncture structure 3 outside the first cavity 121, Make the second protective cover 42 sleeve to the second cavity 122, increase the sealing performance of the first protective cover 41 and the second protective cover 42 and the structure to be sleeved, and further make the first cavity 121, the first cavity 121 outside The expansion structure 2, the puncture structure 3 and the second cavity 122 are isolated from the outside world to prevent the external environment from polluting the puncture sheath, and prevent the pollutants from the external environment from entering the body through the puncture sheath and causing harm to the patient.

Preferably, the outer surfaces of the first cavity 121 and the second cavity 122 are provided with anti-slip structures, when the first protective sleeve 41 is sleeved to the first cavity 121 and the second protective sleeve 42 is sleeved to the second cavity, The anti-slip structure on the outer surface of the cavity can prevent the protective cover from sliding on the outer surface, so as to prevent the first protective cover 41 and the second protective cover 42 from falling off.

In this embodiment, one end of the first cavity 121 is also provided with a second opening 1211 for instruments such as the puncture structure 3 and the expansion structure 2 to penetrate. After the second opening 1211, the second opening 1211 is sealed.

At the same time, one end of the second cavity 122 is provided with a third opening 1221 for liquid discharge. When the puncture sheath is inserted into the body for surgery, liquid will be generated in the body at this time, and the liquid needs to be discharged in time, and the first cavity 121 penetrates into the body. The instrument has been installed, and the second opening 1211 has been sealed by the sealing sleeve 1212, so the suction device is installed on the third opening 1221, and the liquid produced in the body is sucked to the second cavity 122 in time, and the liquid is drawn from the third opening 1221 suck out.

In this embodiment, as shown in FIG. 3 , the expansion structure 2 includes an expansion tube 21 and an expansion tube joint 22, the expansion tube joint 22 is connected to the outer end of the expansion tube 21, and the expansion tube joint 22 is located outside the first cavity 121, The expansion tube 21 is hollow to allow the puncture needle to pass through.

As shown in Figure 4, the puncture structure 3 includes a puncture needle 31 and a puncture needle connector 32, the puncture needle connector 32 is connected to the outer end of the puncture needle 31, the puncture needle connector 32 is located outside the first cavity 121, and the puncture needle 31 is hollow .

In this embodiment, the puncture needle 31 is set in the expansion tube 21, and the puncture end of the puncture needle 31 protrudes from the expansion tube 21, so that the puncture needle 31 can penetrate into the patient's body, and guide the expansion tube 21 and other structures to penetrate into the patient. Inside the body, the puncture needle joint 32 is flexibly connected to the expansion tube joint 22, which makes the installation and disassembly of the puncture needle 31 and the expansion tube 21 more convenient.

The dilation tube 21 is pierced in the sheath tube 11, and the puncture end of the dilation tube 21 protrudes from the sheath tube 11, so that the dilation tube 21 can follow the puncture needle 31 to penetrate into the patient's body, expand the operation channel of the puncture sheath, and facilitate the subsequent operation process , The expansion tube joint 22 is flexibly connected with the sheath tube joint 12, so that the installation and disassembly of the expansion tube 21 and the sheath tube 11 are more convenient.

When using the puncture sheath for surgery, the puncture sheath of this embodiment is inserted into the body according to the conventional insertion operation method. The puncture needle 31 located at the front has a puncture function, and first penetrates into the patient's body, and the expansion tube 21 follows the puncture needle 31 to penetrate, and further expand the passage of penetration, and the sheath tube 11 at the rear end is penetrated into the body following the expansion tube 21, so far the puncture sheath completes the work of penetrating into the body, so as to carry out the next operation.

Then the puncture sheath is left in the body for a period of time to facilitate the subsequent operation, and the protective device 4 is sleeved on the sheath joint 12, the first cavity 121 and the puncture structure 3 outside the first cavity 121 before the preparation for indwelling And the expansion structure 2 and the second cavity 122 are exposed on the structures outside the body, so as to prevent the external environment from polluting the puncture sheath and causing harm to the patient.

Finally, the protective device 4 is removed, the puncture structure 3 and the expansion structure 2 are taken out, and the operation can be performed through the sheath structure 1 . The sealing sleeve 1212 is assembled at the port of the first cavity 121 of the sheath tube joint 12 to provide a closed environment for the negative pressure suction after the instrument enters the sheath tube 11, so as to facilitate suction from the second cavity 122 of the sheath tube joint 12 during operation. Fluid in the body cavity.

The puncture sheath of this embodiment adopts a multi-layered puncture structure, an expansion structure and a sheath structure. The puncture and expansion can be placed in place in one step, without the need for multi-step operations, which shortens the operation time, reduces the doctor’s operation intensity, and reduces the pain of the patient. In addition, the instrument penetration cavity and the liquid discharge cavity adopt a separate design, and the safety is also higher.

It can be understood that the above technical features can be used in any combination without limitation.

The above are only embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related Technical fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. A protective device for a puncture sheath, wherein the puncture sheath comprises a sheath structure (1), an expansion structure (2) and a puncture structure (3), and the sheath structure (1) comprises a sheath tube (11) and is connected to The sheath tube connector (12) at the tail end of the sheath tube (11), the sheath tube connector (12) includes a communicated first cavity (121) and a second cavity (122), the first cavity ( 121) is an instrument penetration channel for the expansion structure (2) and the puncture structure (3) to pass through, and the second cavity (122) is a negative pressure channel, characterized in that, The protective device (4) includes a first protective cover (41) and a second protective cover (42) sharing the first opening (411), so that the protective device (4) can be opened by the first opening (411) After being sleeved on the sheath joint (12), the first protective sleeve (41) can be sleeved to the first cavity (121) and all the parts outside the first cavity (121). The expansion structure (2), the puncture structure (3), and the second protective sheath (42) is sheathed in the second cavity (122). 2. A protection device for a puncture sheath according to claim 1, characterized in that the protection device (4) further comprises a sleeve (43) extending from the first opening (411). 3. The protective device for a puncture sheath according to claim 2, characterized in that, the first protective sheath (41) and the second protective sheath (42) are made of plastic material. 4. A puncture sheath, characterized in that it comprises the protective device (4) according to any one of claims 1 to 3, and a sheath structure (1), an expansion structure (2), and a puncture structure (3); The expansion structure (2) is punctured in the sheath structure (1), and the puncture structure (3) is punctured in the expansion structure (2); The first protective sheath (41) of the protective device (4) is sheathed in the first cavity (121) and the puncture structure (3) outside the first cavity (121) and the expansion structure (2), the second protective sheath (42) is sleeved on the second cavity (122), and the first opening (411) is sleeved on the sheath joint ( 12) to isolate from the outside. 5. A puncture sheath according to claim 4, characterized in that, the expansion structure (2) comprises an expansion tube (21) and an expansion tube joint (22), and the expansion tube joint (22) is connected to the expansion tube joint (22). The outer end of the expansion tube (21) is connected, the expansion tube joint (22) is located outside the first cavity (121), and the expansion tube (21) is hollow; The puncture structure (3) includes a puncture needle (31) and a puncture needle connector (32), the puncture needle connector (32) is connected to the outer end of the puncture needle (31), and the puncture needle connector (32) Located outside the first cavity (121), the puncture needle (31) is hollow. 6. A puncture sheath according to claim 5, characterized in that, the expansion tube (21) is pierced in the sheath tube (11), and the puncture end of the expansion tube (21) protrudes from the The sheath tube (11), the expansion tube joint (22) are flexibly connected with the sheath tube joint (12). 7. A puncture sheath according to claim 5, characterized in that, the puncture needle (31) is pierced in the expansion tube (21), and the puncture end of the puncture needle (31) protrudes from the The expansion tube (21), the puncture needle joint (32) are flexibly connected with the expansion tube joint (22). 8. A kind of puncture sheath according to claim 4, is characterized in that, one end of described first cavity (121) is also provided with the second opening (1211) that instrument is passed through, and described second opening ( 1211) is provided with a sealing sleeve (1212), so as to seal the second opening (1211) after the instrument passes through the second opening (1211). 9. The puncture sheath according to claim 4, characterized in that, one end of the second cavity (122) is provided with a third opening (1221) for liquid to flow out. 10. A puncture sheath according to claim 8 or 9, characterized in that, the outer surfaces of the first cavity (121) and the second cavity (122) are provided with anti-slip structures to prevent the The first protective cover (41) and the second protective cover (42) fall off.

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