CN216294139U

CN216294139U - Novel sheath pipe with locking function

Info

Publication number: CN216294139U
Application number: CN202121959394.5U
Authority: CN
Inventors: 张晓�; 李天海; 罗超
Original assignee: Chengdu Xinjin Shifeng Medical Instrument Co Ltd
Current assignee: Chengdu Xinjin Shifeng Medical Instrument Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-04-15
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to the technical field of sheath pipes, and provides a novel sheath pipe with a locking function, which comprises a pipe body, wherein a conveying channel is formed in the pipe body; the locking part comprises a locking part, a second conical part matched with the first conical part is arranged in the locking part, and the locking part is sleeved on the outer wall of the pipe body and can reciprocate along the axis of the pipe body; at the time of fixation, the second tapered portion applies an external force to the first tapered portion so that the connection passage inside the first tapered portion becomes gradually smaller. The medical instrument fixing device has the advantages that the extrusion piece and the locking piece matched with the extrusion piece are arranged, other medical instruments penetrating through the conveying channel can be fixed, additional pain to a patient is avoided, the operation is simple and convenient, and the practicability is high.

Description

Novel sheath pipe with locking function

Technical Field

The utility model relates to the technical field of sheath tubes, in particular to a novel sheath tube with a locking function.

Background

The sheath tube is used as an auxiliary medical appliance, is mainly used for clinical introduction of interventional diagnosis and treatment, and is used in cooperation with interventional products to establish a temporary channel. After the sheath is fixed, for example, a contrast catheter, a microcatheter, a balloon catheter and other medical devices enter the blood vessel through the sheath, so as to complete subsequent diagnosis and treatment operations.

The conventional sheath is usually inserted into the blood vessel from the sheath, but the conventional sheath does not have a fixing device specially used for fixing other medical devices, and when the other medical devices for diagnosis and treatment are inserted into the blood vessel from the sheath, the other medical devices are easy to move, so that medical staff are influenced to implement corresponding treatment operation for patients, even extra pain is brought to the patients, and medical accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel sheath tube with a locking function, which can realize the fixation of other medical instruments penetrating through the sheath tube, is simple and convenient to operate and has strong practicability.

The embodiment of the utility model is realized by the following technical scheme:

a novel sheath tube with a locking function comprises a tube body, wherein a conveying channel is formed in the tube body, one end of the tube body is provided with a fixing assembly, the fixing assembly comprises an extrusion piece and a locking part, the extrusion piece is an elastic body, a connecting channel is formed in the extrusion piece, the connecting channel is communicated with the conveying channel, and the extrusion piece at least comprises a first conical part;

the locking part comprises a locking part, a second conical part matched with the first conical part is arranged in the locking part, and the locking part is sleeved on the outer wall of the pipe body and can reciprocate along the axis of the pipe body; when fixed, the second tapered portion applies an external force to the first tapered portion so that the connection passage inside the first tapered portion becomes gradually smaller.

Optionally, locking part is still located including the cover the mounting of body outer wall, the outer wall of mounting is equipped with the external screw thread, inside being equipped with of retaining member with the internal thread hole of external screw thread adaptation, the internal diameter in internal thread hole is greater than the external diameter of extruded piece, the extruded piece is located the retaining member with between the mounting, second toper portion is located the retaining member is kept away from one side of extruded piece.

Optionally, a plurality of groups of upper convex bodies and lower convex bodies which are matched with each other are arranged in the connecting channel corresponding to the first conical part; when secured, the upper and lower bosses approach each other.

Optionally, an exhaust assembly is arranged between the fixing assembly and the free end of the pipe body, and the exhaust assembly is used for exhausting gas in the pipe body.

Furthermore, the exhaust assembly comprises a connecting seat, a connecting pipe and a valve, the connecting seat is provided with an exhaust passage communicated with the conveying passage, one end of the connecting pipe is communicated with the exhaust passage, and the valve is arranged on the connecting pipe.

Further, the valve is a three-way valve.

Optionally, the outer wall of the locking part is provided with an anti-skid belt

Optionally, the extrusion piece is made of medical silica gel.

The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:

the medical instrument fixing device is reasonable in design, can realize the fixation of other medical instruments penetrating through the conveying channel by arranging the extrusion piece and the locking piece matched with the extrusion piece, is simple and convenient to operate, does not cause additional pain to patients, and is high in practicability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a sheath according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an extrusion provided by an embodiment of the present invention;

fig. 3 is a cross-sectional view of a retaining member according to an embodiment of the present invention.

Icon: 1-a pipe body, 101-a conveying channel, 2-an extrusion part, 201-a connecting channel, 202-a first conical part, 203-an upper convex body, 204-a lower convex body, 3-a locking part, 301-a second conical part, 302-an internal threaded hole, 4-a fixing part, 5-an anti-slip belt, 6-a connecting seat, 7-a connecting pipe and 8-a valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, fig. 2 and fig. 3, the present embodiment provides a novel sheath with a locking function, which includes a tube body 1 having a conveying channel 101 formed therein, wherein one end of the tube body 1 extending into a blood vessel is a free end, and one end of the tube body 1 away from the free end is provided with a fixing component for fixing other medical devices.

Considering that the prior sheath is not provided with a fixing device, when other medical instruments (such as a contrast catheter, a microcatheter, a balloon catheter and the like) are inserted into the sheath, the medical instruments are often difficult to fix, and certain safety risks exist in the actual treatment process. In order to realize the fixing of the therapeutic device inserted into the sheath, the fixing assembly of the present embodiment includes the pressing member 2 and the locking member, the pressing member 2 is an elastic body having a transverse connecting passage 201 provided therein, the connecting passage 201 communicates with the delivery passage 101 to realize other medical devices, and the pressing member 2 includes a first tapered portion 202 and a cylindrical portion. It can be understood that the extrusion member 2 can be made of medical silica gel, medical PVC, TPE and other elastic materials; preferably, the extrusion 2 of the present embodiment is made of medical grade silicone.

Locking part includes retaining member 3, retaining member 3 inside be equipped with the second toper portion 301 of first toper portion 202 adaptation, retaining member 3 cover is located body 1 outer wall and can be followed the axis reciprocating motion of body 1, when retaining member 3 moves along the axis of body 1, can apply an external force to first toper portion 202 through second toper portion 301 to make first toper portion 202 take place elastic deformation, the inside connecting channel 201 of first toper portion 202 diminishes gradually this moment.

In actual use, if the delivery channel 101 needs to be kept in a through state, the second tapered portion 301 of the locking member 3 is not in contact with the first tapered portion 202, that is, the second tapered portion 301 does not apply external force to the first tapered portion 202, and the connecting channel 201 inside the first tapered portion 202 is communicated with the delivery channel 101, so that other medical instruments can be conveniently inserted into the delivery channel 101; on the contrary, when other medical instruments passing through the delivery channel 101 need to be fixed, the retaining member 3 moves towards the extrusion member 2 along the axis of the tube body 1, and the second tapered portion 301 is made to contact with the first tapered portion 202, along with the continuous movement of the retaining member 3, the inner wall of the second tapered portion 301 continuously applies external force to the outer wall of the first tapered portion 202, so that the first tapered portion 202 is elastically deformed, and at the moment, the inner wall of the first tapered portion 202 continuously extrudes the outer wall of the medical instrument passing through the delivery channel 101, so as to fix the medical instrument.

Therefore, the sheath provided by the embodiment can realize the fixation of other medical instruments passing through the conveying channel 101 from the outside by arranging the extrusion part 2 and the locking part 3 matched with the extrusion part, is simple and convenient to operate, can not cause extra pain to a patient, and has strong practicability.

In this embodiment, in order to facilitate the movement of the retaining member 3 along the axis of the pipe body 1, and apply an external force to the first tapered portion 202 of the extrusion member 2 through the retaining member 3, please continue to refer to fig. 1 and fig. 3, the retaining member further includes a fixing member 4 covering the outer wall of the pipe body 1, the outer wall of the fixing member 4 is provided with an external thread, the retaining member 3 is internally provided with an internal thread hole 302 adapted to the external thread, the internal diameter of the internal thread hole 302 is greater than the external diameter of the extrusion member 2, the extrusion member 2 is located between the retaining member 3 and the fixing member 4, and the second tapered portion 301 is located on one side of the retaining member 3 away from the extrusion member 2.

It can be understood that the locking member 3 of the present embodiment is slidably disposed on the tube 1 to reduce the friction between the locking member 3 and the tube 1; simultaneously, for convenience of medical personnel hold retaining member 3 in order to implement corresponding operation, the outer wall of above-mentioned retaining member 3 is equipped with anti-skidding area 5 to increase medical personnel's hand and the frictional force between retaining member 3, make whole operation process more reliable and more stable.

When other medical instruments penetrating through the conveying channel 101 need to be fixed, the locking member 3 slides to the fixing member 4 along the pipe body 1, at the moment, the inner wall of the second conical part 301 in the locking member 3 is just contacted with the outer wall of the end part of the first conical part 202 of the extrusion member 2, and at the moment, the internal thread hole 302 of the locking member 3 is just in threaded connection and matching with the external thread of the fixing member 4; with the continuous rotation of the locking part 3, the locking part 3 slowly moves towards the fixing part 4, at the moment, the first conical part 202 is elastically deformed under the action of the second conical part 301, and finally, the connecting channel 201 in the first conical part 202 is gradually reduced, so that the medical instrument passing through the conveying channel 101 is fixed, and the whole process is stable and reliable; conversely, only the locking member 3 needs to be rotated reversely, at this time, the second tapered portion 301 gradually disengages from the first tapered portion 202, the first tapered portion 202 returns to the initial state under the action of its own elastic force, and the connecting channel 201 gradually becomes larger, so as to unlock the medical device passing through the conveying channel 101.

It should be noted that, in the stage of fixing other medical instruments, only the locking piece 3 needs to be rotated properly, so that the first tapered portion 202 is elastically deformed properly to press and fix other medical instruments, thereby avoiding that the deformation of the first tapered portion 202 is too large, which causes the inner channels of other medical instruments to be also pressed and reduced.

In the present embodiment, the use effect is further improved. With reference to fig. 2, a plurality of sets of upper protrusions 203 and lower protrusions 204 are disposed inside the connecting channel 201 corresponding to the first tapered portion 202, and the plurality of sets of protrusions are sequentially disposed along the axial direction of the connecting channel 201. At the time of fixing, the first tapered portion 202 is elastically deformed by the second tapered portion 301, and at this time, the upper convex body 203 and the lower convex body 204 are close to each other so that the connection passage 201 becomes gradually smaller. By providing a plurality of sets of protrusions, the protrusions can be abutted against the outer walls of other medical instruments at the stage of fixedly inserting other medical instruments in the conveying channel 101, thereby further improving the stability of the medical instruments. It can be understood that two sets of convex bodies are arranged in the connecting channel 201 corresponding to the first conical part 202 in the embodiment, the upper convex body 203 and the lower convex body 204 in each set of convex bodies are both in an arc-shaped structure, the material of the upper convex body 203 and the material of the lower convex body 204 are the same as that of the extrusion part 2, and in the actual manufacturing process, the upper convex body 203, the lower convex body 204 and the extrusion part 2 are manufactured in an integrated manner.

In this embodiment, with reference to fig. 1, an exhaust assembly for exhausting the gas inside the conveying channel 101 of the tube body 1 is disposed between the fixing assembly and the free end of the tube body 1, so as to prevent the residual gas in the conveying channel 101 of the tube body 1 from being conveyed to the blood vessel of the human body during the actual treatment process, thereby causing damage to the human body.

The exhaust assembly includes a connecting seat 6, a connecting pipe 7 and a valve 8, the connecting seat 6 is provided with an exhaust passage (not shown in the figure) communicated with the conveying passage 101, one end of the connecting pipe 7 is communicated with the exhaust passage, the valve 8 is arranged on the connecting pipe 7, and the valve 8 adopts a conventional three-way valve. In this embodiment, one end of the fixing member 4 sleeved on the outer wall of the pipe body 1 is connected to one side of the connecting seat 6, so as to improve the stability of the overall structure of the sheath pipe.

In the exhaust stage, after the valve 8 is opened, the normal saline is slowly injected into the conveying channel 101 through the connecting pipe 7, until the whole conveying channel 101 is filled with the normal saline, residual gas in the conveying channel 101 is exhausted, and after the gas is exhausted, the valve 8 is closed, so that the operation is simple and convenient.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The novel sheath tube with the locking function comprises a tube body, wherein a conveying channel is formed in the tube body, and the novel sheath tube is characterized in that one end of the tube body is provided with a fixing assembly, the fixing assembly comprises an extrusion piece and a locking part, the extrusion piece is an elastic body, a connecting channel is formed in the extrusion piece, the connecting channel is communicated with the conveying channel, and the extrusion piece at least comprises a first conical part;

2. The novel sheath with the deadlocking function as claimed in claim 1, wherein the locking member further comprises a fixing member sleeved on the outer wall of the tube body, the outer wall of the fixing member is provided with an external thread, an internal thread hole adapted to the external thread is formed inside the locking member, the inner diameter of the internal thread hole is larger than the outer diameter of the extrusion member, the extrusion member is located between the locking member and the fixing member, and the second tapered portion is located on one side of the locking member away from the extrusion member.

3. The novel sheath with the locking function as claimed in claim 1 or 2, wherein a plurality of sets of upper convex bodies and lower convex bodies which are matched with each other are arranged in the connecting channel corresponding to the first tapered part; when secured, the upper and lower bosses approach each other.

4. The novel sheath with locking function as claimed in claim 1, wherein an exhaust member is provided between the fixing member and the free end of the tube body, the exhaust member being configured to exhaust gas inside the tube body.

5. The novel sheath with locking function as claimed in claim 4, wherein the exhaust assembly comprises a connecting base, a connecting pipe and a valve, the connecting base is provided with an exhaust passage communicating with the delivery passage, one end of the connecting pipe communicates with the exhaust passage, and the valve is provided on the connecting pipe.

6. The novel sheath with locking function of claim 5, wherein the valve is a three-way valve.

7. The novel sheath with locking function as claimed in claim 1, wherein the outer wall of the locking part is provided with an anti-slip band.

8. The novel sheath with locking function as claimed in claim 1, wherein said extrusion is made of medical silica gel.