CN214969866U - Large-cavity suction device - Google Patents

Abstract

The utility model discloses a large-cavity suction device, which comprises an outer sheath and an inner sheath, wherein the outer sheath comprises an outer sheath body and an outer sheath core, the outer sheath core is detachably inserted into the inner cavity of the outer sheath body, a first thread guide channel is arranged inside the outer sheath core, the first thread guide channel is arranged along the length direction of the outer sheath core, the outer sheath body is connected with an outer sheath three-way pipe, and the outer sheath three-way pipe is communicated with the inner cavity of the outer sheath body; the inner sheath comprises an inner sheath pipe and an inner sheath core, the inner sheath core is detachably inserted into the inner cavity of the inner sheath pipe, the inner sheath pipe is detachably inserted into the inner cavity of the outer sheath body, a second guide wire channel is arranged on the inner sheath pipe and arranged along the length direction of the inner sheath pipe, the inner sheath pipe is connected with an inner sheath three-way pipe, and the inner sheath three-way pipe is communicated with the inner cavity of the inner sheath pipe. The large-cavity suction device of the utility model can be used for sucking foreign matters in blood vessels of the whole body, and the guide wire is kept in the second guide wire channel in the suction process, so that the guide wire does not need to be repeatedly fed and discharged; during suction, the inner sheath tube and the outer sheath tube form a closed suction system, so that air is prevented from entering, and the surgical risk is reduced.

Description

Large-cavity suction device

Technical Field

The utility model relates to the technical field of medical equipment, more particularly, the utility model relates to a big chamber suction device.

Background

At present, what traditional thrombus suction adopted in the market is ordinary vascular sheath, and ordinary vascular sheath is the passageway of surgical equipment in the art, receives the restriction in operation and the effect when using the thrombus suction: 1. before suction, in order to prevent the guide wire from occupying the lumen space, the common vascular sheath reduces the thrombus suction efficiency, thrombus/foreign body suction is often required to be performed after the guide wire is withdrawn, if suction is required to be performed on a repeatedly diseased position, the guide wire needs to be reselected, the suction efficiency is influenced, and the operation risk and the complication incidence rate are increased. 2. The traditional vascular sheath is not special for suction, and suction of special parts such as blood vessels below the knee, blood vessels of the forearm and the like cannot be finished on the product model, so that the operation effect and the prognosis of a patient are influenced. 3. The traditional vascular sheath has poor tightness, and air is often pumped back into the sheath during the suction process to increase the operation risk.

Therefore, a suction device having a high suction effect and capable of being used for sucking various arteriovenous thrombi, intravascular foreign matter, and the like of the whole body is required.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the existing vascular sheath has low suction efficiency and can not meet the requirements of suction of special parts and air is sucked in the sheath to increase the risk of operation, the utility model innovatively provides a large-cavity suction device which can be used for suction of various arteriovenous thrombi, intravascular foreign matters and the like of the whole body, and a guide wire is always kept in a second guide wire channel of an inner sheath tube during suction without repeatedly entering and exiting the guide wire; in addition, the inner sheath tube and the outer sheath tube form a closed suction system during suction, so that air is prevented from entering, complications are reduced, and the operation risk is reduced. The utility model discloses a big chamber suction device can design into different length and diameter to the pathological change position of difference, satisfies different suction demands.

In order to achieve the technical purpose, the utility model discloses a large-cavity suction device, which comprises an outer sheath and an inner sheath,

the sheath comprises a sheath body and a sheath core, the sheath core is detachably inserted into the inner cavity of the sheath body, a first guide wire channel is arranged inside the sheath core, the first guide wire channel is arranged along the length direction of the sheath core, the sheath body is connected with a sheath three-way pipe, and the sheath three-way pipe is communicated with the inner cavity of the sheath body;

the inner sheath comprises an inner sheath pipe and an inner sheath core, the inner sheath core is detachably inserted into the inner cavity of the inner sheath pipe, the inner sheath pipe is detachably inserted into the inner cavity of the outer sheath body, a second guide wire channel is arranged on the inner sheath pipe and is arranged along the length direction of the inner sheath pipe, the inner sheath pipe is connected with an inner sheath three-way pipe, and the inner sheath three-way pipe is communicated with the inner cavity of the inner sheath pipe.

Further, the second wire guide channel is arranged on the tube body of the inner sheath tube.

Further, the length of the second guidewire channel is less than the length of the inner sheath.

Furthermore, a blocking groove is formed in the tube body of the inner sheath tube and communicated with the second guide wire channel, and the depth of the blocking groove is not lower than the diameter of the second guide wire channel.

Further, the length of the partition groove along the length direction of the inner sheath tube is 5 mm.

Furthermore, the outer sheath core comprises a first conical section, a first cylindrical section and a first cylindrical limiting section which are sequentially connected, the first wire guide channel penetrates through the first conical section, the first cylindrical section and the first cylindrical limiting section, the outer sheath body is sleeved on the first cylindrical section, and the first cylindrical limiting section is clamped outside the outer sheath body.

Furthermore, the inner sheath core comprises a second conical section, a second cylindrical section and a second cylindrical limiting section which are connected in sequence, the inner sheath tube is sleeved on the second cylindrical section, and the second cylindrical limiting section is clamped outside the inner sheath tube.

Furthermore, a first through hole is formed in the side wall of the outer sheath body, and the outer sheath three-way pipe is communicated with the inner cavity of the outer sheath body through the first through hole.

Furthermore, a second through hole is formed in the tube body of the inner sheath tube, and the inner sheath three-way tube is communicated with the inner cavity of the inner sheath tube through the second through hole.

The utility model has the advantages that:

the large-cavity suction device of the utility model can be used for sucking various artery and vein thrombi, foreign matters in blood vessels and the like all over the body, the guide wire is kept in the second guide wire channel of the inner sheath tube in the suction process, the guide wire does not pass through the inner cavity of the inner sheath tube, the guide wire does not need to be repeatedly fed and discharged in the suction process, and the suction efficiency is high; during suction, the inner sheath tube and the outer sheath form a closed suction system, so that air is prevented from entering the sheath, complications are reduced, and the operation risk is reduced. The utility model discloses a big chamber suction device can design into different length and diameter to the pathological change position of difference, satisfies different suction demands.

Drawings

FIG. 1 is a schematic structural view of an outer sheath according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an outer sheath core of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an outer sheath according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an inner sheath according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an inner sheath according to an embodiment of the present invention;

fig. 6 is a schematic end-face structure view of the inner sheath according to the embodiment of the present invention;

fig. 7 is a schematic structural view of an inner sheath core according to an embodiment of the present invention;

fig. 8 is a schematic view of an inner sheath tube inserted into an outer sheath body according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of the inner sheath tube inserted into the outer sheath body according to the embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. an outer sheath; 11. an outer sheath body; 12. an outer sheath core; 13. a first guidewire channel; 14. a sheath three-way pipe; 121. a first conical section; 122. a first cylindrical section; 123. a first cylindrical limiting section;

2. an inner sheath; 21. an inner sheath tube; 22. an inner sheath core; 23. a second guidewire channel; 24. an inner sheath three-way pipe; 25. a blocking groove; 221. a second conical section; 222. a second cylindrical section; 223. the second cylinder spacing section.

Detailed Description

The large-cavity suction device provided by the invention is explained and explained in detail below with reference to the attached drawings.

The embodiment specifically discloses a large-cavity suction device, which comprises an outer sheath 1 and an inner sheath 2, wherein the inner sheath 2 is used as a suction sheath and used for sucking foreign matters in a blood vessel, and the outer sheath 1 and the inner sheath 2 form a closed suction system, so that air suction in the suction process is avoided, complications are reduced, and the operation risk is reduced.

As shown in fig. 1, the sheath 1 includes a sheath body 11 and a sheath core 12, and the sheath core 12 is detachably inserted into an inner cavity of the sheath body 11. As shown in fig. 2, the inner portion of the outer sheath core 12 is provided with a first guide wire channel 13, and the first guide wire channel 13 is provided along the longitudinal direction of the outer sheath core 12. As shown in fig. 3, the sheath body 11 is connected with a sheath three-way tube 14, and the sheath three-way tube 14 is communicated with the inner cavity of the sheath body 11; after the sheath core 12 is inserted into the inner cavity of the sheath body 11, the guide wire passing through the lesion site penetrates into the first guide wire channel 13 to form a guide, and the sheath 1 can be delivered to the lesion proximal end.

As shown in fig. 2, the outer sheath core 12 includes a first conical section 121, a first cylindrical section 122 and a first cylindrical limiting section 123, which are connected in sequence, the first guide wire channel 13 penetrates through the first conical section 121, the first cylindrical section 122 and the first cylindrical limiting section 123, the outer sheath body 11 is sleeved on the first cylindrical section 122, and the first cylindrical limiting section 123 is clamped outside the outer sheath body 11. The first conical section 121, the first cylindrical section 122 and the first cylindrical limiting section 123 are integrally formed. The outer diameter of the first cylindrical section 122 is slightly smaller than the inner diameter of the outer sheath body 11, and the outer diameter of the first cylindrical limiting section 123 is larger than the inner diameter of the outer sheath body 11. The first tapered section 121 is arranged to facilitate the approaching of the sheath 1 to the lesion site, and the first tapered section 121 is relatively smooth to avoid scratching the skin tissue. The first cylindrical limiting section 123 is used for limiting, completing the connection between the outer sheath core 12 and the outer sheath body 11, and preventing the outer sheath core 12 from slipping from the outer sheath body 11 in the process of delivering the outer sheath 1 to the lesion site.

As shown in fig. 3, a first through hole is formed in a side wall of the outer sheath body 11, and the outer sheath three-way tube 14 is communicated with an inner cavity of the outer sheath body 11 through the first through hole. The sheath three-way tube 14 can be connected to a syringe, and can inject physiological saline and the like into the sheath body 11.

As shown in fig. 4, the inner sheath 2 includes an inner sheath 21 and an inner sheath core 22, the inner sheath core 22 is detachably inserted into the lumen of the inner sheath 21, and the inner sheath 21 is detachably inserted into the lumen of the outer sheath 11. As shown in fig. 5, the inner sheath 21 is provided with a second guide wire channel 23, the second guide wire channel 23 is arranged along the length direction of the inner sheath 21, the inner sheath 21 is connected with an inner sheath three-way pipe 24, and the inner sheath three-way pipe 24 is communicated with the inner cavity of the inner sheath 21. Specifically, a second through hole is formed in the body of the inner sheath tube 21, and the inner sheath three-way tube 24 is communicated with the inner cavity of the inner sheath tube 21 through the second through hole. After the sheath core 12 in the inner cavity of the sheath body 11 is withdrawn, the guide wire is retained in the inner cavity of the sheath body 11; the inner sheath core 22 is inserted into the inner cavity of the inner sheath 21, the guide wire passes through the second guide wire channel 23 on the inner sheath 21 to form a track, the inner sheath 2 is guided to be inserted into the inner cavity of the outer sheath body 11, then the inner sheath core 22 is withdrawn from the inner cavity of the inner sheath 21, the guide wire still remains in the second guide wire channel 23, the end part of the inner sheath three-way pipe 24 is connected with an injector and an infusion apparatus, and foreign matters in the blood vessel are extracted out through the inner sheath 21 by the suction of the injector.

As shown in fig. 6, the second guide wire passage 23 is opened in the body of the inner sheath 21. The length of the second guide wire channel 23 is smaller than that of the inner sheath tube 21, the guide wire can penetrate out from the other end of the second guide wire channel 23, the suction process does not enter the inner cavity of the inner sheath tube 21, the guide wire does not need to be repeatedly entered and exited, and the suction effect is not influenced.

The body of the inner sheath tube 21 is provided with a separation groove 25, the separation groove 25 is communicated with the second guide wire channel 23, and the depth of the separation groove 25 is not less than the diameter of the second guide wire channel 23. When suction is applied, the other end of the guide wire is placed in the partition groove 25. Preferably, the length of the blocking groove 25 in the length direction of the inner sheath 21 is 5 mm.

As shown in fig. 7, the inner sheath core 22 includes a second tapered section 221, a second cylindrical section 222 and a second cylindrical limiting section 223, which are connected in sequence, the inner sheath 21 is sleeved on the second cylindrical section 222, and the second cylindrical limiting section 223 is clamped outside the inner sheath 21. The second tapered section 221, the second cylindrical section 222 and the second cylindrical limiting section 223 are integrally formed. The outer diameter of the second cylindrical section 222 is slightly smaller than the inner diameter of the inner sheath 21, and the outer diameter of the second cylindrical limiting section 223 is larger than the inner diameter of the inner sheath 21. The second conical section 221 is arranged to facilitate the approach of the inner sheath 2 to the lesion position, and the second conical section 221 is smooth to avoid scratching the skin tissue. The second cylindrical limiting section 223 is used for limiting, so that the connection between the inner sheath core 22 and the inner sheath tube 21 is completed, and the inner sheath core 22 is prevented from slipping from the inner sheath tube 21 in the process that the inner sheath 2 is sent into the lesion position.

The utility model discloses a process that big chamber suction device carries out the suction as follows:

under the premise that the guide wire passes through a lesion in an operation, the sheath core 12 is inserted into the sheath body 11 to be connected into the sheath 1 (shown in figure 1), a 20ml screw injector is filled with saline and connected to one end of a sheath three-way pipe 14, the other end is sealed, the tail end of the guide wire penetrates into the first guide wire channel 13 to form a guide, the sheath body 11 and the sheath core 12 are sent to the proximal end of the lesion, then the sheath core 12 is withdrawn, and the guide wire is remained in the inner cavity of the sheath body 11. The inner sheath core 22 is inserted into the inner sheath tube 21 in vitro to complete the connection of the inner sheath 2 (as shown in fig. 4), the tail end of the guide wire penetrates out of the second guide wire channel 23 and remains in the partition groove 25, the guide wire establishes a track to guide the inner sheath 2 to a lesion position, at this time, the inner sheath 2 is inserted into the inner cavity of the outer sheath body 11, the inner sheath core 22 is withdrawn after the inner sheath 2 reaches the lesion (as shown in fig. 8 and 9), the 50ml syringe is connected to the inner sheath three-way tube 24, the 50ml syringe is at the bottom under negative pressure to perform suction treatment, the inner sheath tube 21 is withdrawn to the outside along the guide wire, and the suction is completed. When the inner sheath tube 21 is withdrawn, because the outer sheath body 11 is filled with negative pressure, saline water in a 20ml syringe can enter the inner cavity of the outer sheath body 11, so that air is prevented from entering, and a closed system is formed; after the inner sheath 21 is withdrawn to the outside of the body, the injector extracts liquid through the other end of the inner sheath three-way pipe 24 to wash the inner sheath 21 and push out foreign matters, and the operation is completed by repeated operation.

The utility model discloses when the suction, the seal wire does not need to pass in and out the seal wire repeatedly during the suction through the inner chamber of interior sheath pipe 21, and the seal wire position is unchangeable, does not occupy the inner chamber space of interior sheath pipe 21, and increase suction efficiency improves negative pressure stability, and interior sheath pipe 21 lasts powerful negative pressure effect and takes out the foreign matter. The utility model discloses can take the suction of the sheath pipe of different diameters, different length to different pathological change positions to guarantee effectively to take out the foreign matter, the seal wire does not occupy the inner chamber space of interior sheath pipe 21, increases suction efficiency, reduces the operation risk, shortens the operation time.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, and may be the communication of lumens or interaction of two elements, unless expressly limited otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A large-cavity suction device is characterized by comprising an outer sheath (1) and an inner sheath (2),

the sheath (1) comprises a sheath body (11) and a sheath core (12), the sheath core (12) is detachably inserted into the inner cavity of the sheath body (11), a first guide wire channel (13) is arranged inside the sheath core (12), the first guide wire channel (13) is arranged along the length direction of the sheath core (12), the sheath body (11) is connected with a sheath three-way pipe (14), and the sheath three-way pipe (14) is communicated with the inner cavity of the sheath body (11);

interior sheath (2) are including interior sheath pipe (21) and interior sheath core (22), interior sheath core (22) detachable inserts the inner chamber of interior sheath pipe (21), interior sheath pipe (21) detachable inserts the inner chamber of the outer sheath body (11), be equipped with second wire guide channel (23) on interior sheath pipe (21), second wire guide channel (23) are followed the length direction setting of interior sheath pipe (21), interior sheath pipe (21) are connected with interior sheath three-way pipe (24), interior sheath three-way pipe (24) with the inner chamber intercommunication of interior sheath pipe (21).

2. The large lumen aspiration device of claim 1, wherein the second guide wire channel (23) opens onto the body of the inner sheath (21).

3. The large lumen aspiration device of claim 2, wherein the length of the second guidewire channel (23) is less than the length of the inner sheath (21).

4. The large-cavity suction device according to claim 3, wherein a blocking groove (25) is formed in the body of the inner sheath (21), the blocking groove (25) is communicated with the second guide wire channel (23), and the groove depth of the blocking groove (25) is not lower than the diameter of the second guide wire channel (23).

5. The large-lumen suction device according to claim 4, wherein the length of the partition groove (25) in the length direction of the inner sheath (21) is 5 mm.

6. The large-cavity suction device according to claim 1, wherein the outer sheath core (12) comprises a first conical section (121), a first cylindrical section (122) and a first cylindrical limiting section (123) which are connected in sequence, the first guide wire channel (13) penetrates through the first conical section (121), the first cylindrical section (122) and the first cylindrical limiting section (123), the outer sheath body (11) is sleeved on the first cylindrical section (122), and the first cylindrical limiting section (123) is clamped outside the outer sheath body (11).

7. The large-cavity suction device according to claim 1 or 6, wherein the inner sheath core (22) comprises a second conical section (221), a second cylindrical section (222) and a second cylindrical limiting section (223) which are connected in sequence, the inner sheath tube (21) is sleeved on the second cylindrical section (222), and the second cylindrical limiting section (223) is clamped outside the inner sheath tube (21).

8. The large-cavity suction device according to claim 1, wherein a first through hole is opened on the side wall of the outer sheath body (11), and the outer sheath three-way pipe (14) is communicated with the inner cavity of the outer sheath body (11) through the first through hole.

9. The large-cavity suction device as claimed in claim 1, wherein the inner sheath tube (21) has a second through hole formed on the tube body, and the inner sheath three-way tube (24) is communicated with the inner cavity of the inner sheath tube (21) through the second through hole.

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