CN213077126U

CN213077126U - Catheter sheath

Info

Publication number: CN213077126U
Application number: CN202021041583.XU
Authority: CN
Inventors: 李峰
Original assignee: Fervid Medical Technology Co ltd
Current assignee: Fervid Medical Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-04-30
Anticipated expiration: 2030-06-08

Abstract

The utility model belongs to the technical field of medical instrument, a catheter sheath is disclosed, including the sheath tube socket, with first sheath pipe and the protective sheath of sheath tube socket bottom intercommunication, this protective sheath includes the boss, and this boss is outside protrusion extension in the one side of sheath tube socket back to and is the transition portion that the convergent form set up on the lateral wall in order to wrap up first sheath pipe one end to first sheath pipe direction. Like this, through the lateral wall of boss parcel sheath pipe seat one end, through the lateral wall of the first sheath pipe one end of transition portion parcel, and set up transition portion into convergent column structure, strengthened the pliability of protective sheath bottom, reduced the probability that first sheath pipe and sheath pipe seat were discounted effectively, improved the anti folding performance of first sheath pipe and sheath pipe seat.

Description

Catheter sheath

Technical Field

The utility model belongs to the technical field of medical instrument, more specifically say, relate to a catheter sheath.

Background

As an auxiliary guide instrument for arteriovenous interventional operations, the catheter sheath plays an important role in interventional therapy. The common catheter sheath clinically comprises a base and a sheath, a connecting pipe and a tee joint are arranged on the side face of the base, blood samples can be extracted, pressure monitoring and medicines or contrast agents can be injected in the operation, a valve is arranged on the base portion of the base, the sheath is in a hollow round tube shape, and when an operation channel is established between the sheath and the base, the connecting portion of the sheath and the base is easy to be broken due to poor bending resistance, so that the service life of the catheter sheath is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a catheter sheath aims at solving the catheter sheath among the prior art and influences its life's technical problem because of the bending resistance is relatively poor.

In order to realize the purpose, the utility model discloses a technical scheme is: catheter sheath, including the sheath tube socket, with first sheath pipe that sheath tube socket bottom communicates and be used for with the sheath tube socket with first sheath pipe transitional coupling's protective sheath, the protective sheath including wrap up in boss on the lateral wall of sheath tube socket one end, the boss is back to the outside protrusion of one side of sheath tube socket extends and to first sheath pipe direction is the setting of convergent form with the parcel transition portion on the lateral wall of first sheath pipe one end.

Further, the protective sleeve is a soft rubber piece.

Further, a sealing element is further arranged at the connecting position of the first sheath tube and the sheath tube seat.

Furthermore, a hemostatic valve with an opening is arranged in the sheath tube seat, and a hemostatic valve cover used for abutting against the hemostatic valve is arranged at the top of the sheath tube seat.

Furthermore, the middle part of one side of the hemostasis valve, which is opposite to the hemostasis valve cover, is in an inwards concave arc shape.

Furthermore, the middle position of the hemostasis valve, which is back to the hemostasis valve cover, is provided with an arc part in an outward protruding mode.

Further, the first sheath is a fluorine material.

Furthermore, the catheter sheath further comprises a second sheath tube movably inserted into the first sheath tube and a needle tube seat communicated with the second sheath tube, a first buckling position is arranged on the needle tube seat, a second buckling position is arranged on the hemostasis valve cover, and the first buckling position and the second buckling position are buckled.

The utility model provides a conduit sheath's beneficial effect lies in: compared with the prior art, the utility model discloses a conduit sheath is through setting up the protective sheath to can realize transitional coupling with first sheath pipe and sheath pipe seat, through the lateral wall of boss parcel sheath pipe seat one end in the protective sheath promptly, through the lateral wall of the first sheath pipe one end of transition portion parcel in the protective sheath, and set up transition portion into convergent column structure, strengthen the pliability of protective sheath bottom, reduced the probability that first sheath pipe and sheath pipe seat were discounted effectively, the anti folding performance of first sheath pipe and sheath pipe seat has been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the embodiments or the drawings needed in the prior art description, and obviously, the drawings in the following description are only some embodiments of the embodiments, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a partially exploded view of a catheter sheath according to an embodiment of the present invention;

fig. 3 is an exploded view of the sheath base, the first sheath and the protective sheath according to the embodiment of the present invention;

fig. 4 is a cross-sectional view of a hemostatic valve according to an embodiment of the present invention;

fig. 5 is a connection structure diagram of the needle tube seat and the hemostatic tube valve according to the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-sheath base;

2-a first sheath;

3-protecting the jacket; 31-a boss; 32-a transition;

4-a seal;

5-a hemostatic valve; 51-an arc;

6-hemostatic valve cover;

7-needle tube seat; 71-a first catch;

8-connecting pipe; 81-control switch; 82-three-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, it should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as restrictive, and the implementation of the present invention will be described in detail with reference to the specific embodiments below.

As shown in fig. 1 to 5, this embodiment provides a catheter sheath, including sheath tube seat 1 and first sheath pipe 2, first sheath pipe 2 communicates with the bottom of sheath tube seat 1, this catheter sheath still includes protective sheath 3, this protective sheath 3 can realize transitional coupling with sheath tube seat 1 and first sheath pipe 2, specifically, this protective sheath 3 includes boss 31, this boss 31 wraps up on the lateral wall of sheath tube seat 1 one end, this boss 31 is the outside protrusion extension of one side of sheath tube seat 1 and is the transition portion of convergent shape setting in order to wrap up the lateral wall of first sheath pipe 2 one end to first sheath pipe 2 direction. Like this, through setting up boss 31 and transition portion 32, thereby can realize transitional coupling with first sheath pipe 2 and sheath tube socket 1, the lateral wall through boss 31 parcel sheath tube socket 1 one end promptly, this transition portion 32 parcel is on the lateral wall of first sheath pipe 2 one end, in addition, through setting up transition portion 32 to convergent column structure, the pliability of protective sheath 3 bottom has been strengthened, the probability of first sheath pipe 2 and sheath tube socket 1 inflected has been reduced effectively, the anti folding performance of first sheath pipe 2 and sheath tube socket 1 has been improved.

Preferably, the protective sheath 3 is a soft plastic, so that the flexibility of the protective sheath 3 can be further enhanced, and the transition connection between the first sheath 2 and the sheath base 1 can be better realized. Of course, in this embodiment, the protective sleeve 3 may be made of other materials according to practical situations and specific requirements, and is not limited herein.

Further, please refer to fig. 2 and fig. 3, as an embodiment of the catheter sheath provided by the present invention, the catheter sheath further includes a sealing member 4, and the sealing member 4 is disposed at a connection position of the first sheath 2 and the sheath seat 1. Like this, through setting up sealing member 4 to realize first sheath pipe 2 and sheath tube socket 1's interference fit, guaranteed first sheath pipe 2 and sheath tube socket 1's good leakproofness. Preferably, the sealing element 4 is a metal element, which ensures that the sealing element 4 has a certain strength, so that it can achieve a better sealing. Of course, the sealing member 4 may be made of other materials, and is not limited herein.

Further, please refer to fig. 3 and fig. 4, as a specific embodiment of the catheter sheath of the present invention, a hemostatic valve 5 is disposed in the sheath tube seat 1, an opening is disposed on the hemostatic valve 5, a hemostatic valve cover 6 is disposed on the top of the hemostatic valve 5, and the hemostatic valve cover 6 can be used to press the hemostatic valve 5. Therefore, the hemostatic valve 5 can be tightly attached to the auxiliary instrument in the process of penetrating through the sheath tube seat 1, so that blood overflow is effectively avoided, and in addition, the opening is formed in the hemostatic valve 5, so that the resistance of the auxiliary instrument in penetrating is effectively reduced when the auxiliary instrument penetrates through the hemostatic valve 5, the auxiliary instrument can penetrate through the opening quickly, and the operation efficiency is improved.

Preferably, the opening is a triangular cut, so that the opening can be ensured to be opened and closed well, and the wrapping performance of the auxiliary instrument can be enhanced.

Further, please refer to fig. 4, as a specific embodiment of the sheath of the present invention, the middle position of the hemostatic valve cover 6 facing the hemostatic valve 5 is in an inward concave arc shape, so that the hemostatic valve cover 6 can be buckled therein, which improves the contact area between the hemostatic valve 5 and the hemostatic valve cover 6, so that the hemostatic valve cover 6 better presses the hemostatic valve 5, thereby effectively preventing the blood from overflowing during the operation.

Further, please refer to fig. 4, as a specific embodiment of the catheter sheath of the present invention, the hemostatic valve 5 is further provided with an arc portion 51, and a middle portion of the hemostatic valve 51 opposite to the hemostatic valve cover 6 is protruded and extended outwards. Through setting up arc portion 51 to can adapt sheath tube seat 1's shape, strengthen the compactness of being connected of hemostasis valve 5 and sheath tube seat 1, further prevented that the phenomenon of blood overflow from taking place in the operation process.

Preferably, in this embodiment, the radian of the concave arc on one surface of the hemostatic valve 5 is different from the radian of the arc part 51 on the other surface of the hemostatic valve 5, so as to better prevent the liquid from leaking and ensure the directional deformation of the hemostatic valve 5.

In this embodiment, have open-ended hemostasis valve 5 through the setting, and set the one side middle part position of hemostasis valve 5 into concave arc, be provided with arc 51 in the relative one side of hemostasis valve 5, and the radian of this hemostasis valve 5 one side concave arc's radian and the radian size of the arc 51 of hemostasis valve 5 another side are inequality. Thus, the wrapping performance of the auxiliary device is enhanced, and the blood is effectively prevented from overflowing during operation and use.

Further, as a specific embodiment of the catheter sheath provided by the present invention, the first sheath tube 2 is made of fluorine. Like this, showing the bending resistance ability that has improved first sheath pipe 2, guaranteeing simultaneously under the prerequisite of good bending resistance ability, having reduced the wall thickness of first sheath pipe 2 as far as possible, and then reduced the external diameter of other products under the same internal diameter size. Of course, in this embodiment, the first sheath 2 may be made of other materials, which is not limited herein.

Further, please refer to fig. 1 and 5, as a specific embodiment of the sheath of the present invention, the sheath further includes a second sheath (not shown in the drawings) and a needle tube seat 7, the second sheath is movably inserted into the first sheath 2, and the second sheath is communicated with the needle tube seat 7, in addition, a first buckling position 71 is provided on the needle tube seat 7, a second buckling position (not shown in the drawings) is provided on the hemostatic valve cover 6, and the first buckling position 71 is buckled with the second buckling position. Thus, the first buckling position 71 and the second buckling position are arranged, so that the needle tube seat 7 is matched and connected with the hemostatic valve cover 6, and the needle tube seat 7 is prevented from moving backwards in the puncture process.

Further, referring to fig. 1, as an embodiment of the catheter sheath provided by the present invention, the catheter sheath further includes a connecting pipe 8, a control switch 81 and a three-way valve 82, wherein the connecting pipe 8 is communicated with the sheath hub 1. Thus, the three-way valve 82 is controlled to open and close by the control switch 81, and the sheath base 1 is communicated with an external structural member.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Catheter sheath, its characterized in that, including the sheath tube socket, with first sheath pipe that sheath tube socket bottom communicates and be used for with the sheath tube socket with first sheath pipe transitional coupling's protective sheath, the protective sheath including wrap up in boss on the lateral wall of sheath tube socket one end, the boss is back to the outside protrusion of one side of sheath tube socket extends and to first sheath pipe direction is the setting of convergent form with the parcel transition portion on the lateral wall of first sheath pipe one end.

2. The catheter sheath of claim 1, wherein the protective sheath is a soft gel.

3. The catheter sheath of claim 1, wherein a seal is further provided at the junction of the first sheath and the sheath hub.

4. The catheter sheath of claim 1, wherein a hemostasis valve having an opening is provided in the sheath base, and a hemostasis valve cover for pressing the hemostasis valve is provided on the top of the sheath base.

5. The catheter sheath of claim 4, wherein the hemostatic valve is disposed in an inwardly concave arc shape at a central portion of a side of the hemostatic valve cover facing the hemostatic valve cover.

6. The catheter sheath of claim 4, wherein a central portion of a side of the hemostasis valve cover facing away from the hemostasis valve cover is provided with an outwardly convex curved portion.

7. The catheter sheath of any one of claims 1 to 6, wherein the first sheath is a fluorine material.

8. The catheter sheath of claim 4, further comprising a second sheath movably inserted into the first sheath, and a needle hub communicating with the second sheath, wherein the needle hub is provided with a first fastening position, the hemostatic valve cover is provided with a second fastening position, and the first fastening position is fastened with the second fastening position.