CN218484987U

CN218484987U - Sheath pipe with composite construction hemostasis valve

Info

Publication number: CN218484987U
Application number: CN202221501727.4U
Authority: CN
Inventors: 汪阮峰; 何健
Original assignee: Medco Medical Technology Shanghai Co ltd
Current assignee: Medco Medical Technology Shanghai Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-02-17
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a sheath tube with a hemostatic valve with a composite structure, which comprises a shell, wherein one end of the shell is connected with a hollow head end fixing piece, and one end of the head end fixing piece is fixedly connected with a sheath tube body; the inside of casing be provided with the inside fixed connection's of head end mounting infundibulate elastomer, just the outside of elastomer is provided with the spring part, through the rotation of spring part lower extreme fixed connection's rotating member, control the shrink and the expansion of spring part, in order to control the shrink and the expansion of elastomer. An instrument exchange area can be formed between the middle controllable sealing section and the near-end constant sealing section of the funnel-shaped elastic body of the device, when the middle controllable sealing section is closed, the catheter is inserted, pulled out or exchanged with other instruments and the like, and the operation can be finished in the exchange area without influencing the hemostasis sealing state of the sheath tube.

Description

Sheath pipe with composite construction hemostasis valve

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a sheath pipe with composite construction hemostasis valve.

Background

The sheath is a commonly used medical device, and is often used in conjunction with a catheter for various operations, the catheter reaching the tissue site in the body through the internal passage of the sheath, and then performing the operation, wherein the hemostatic valve is a key component of the sheath. During operation, the hemostatic valve keeps the proximal end of the internal channel of the sheath in contact and sealed with the outer surface of the catheter, and isolates the external environment. Due to factors such as matching of the sheath and the catheter, catheter operation and the like, the sheath tube can leak blood to a certain extent during operation, so that the market and clinicians have high requirements on the performance of the sheath tube blood stopping valve. According to hemostasis valve structural design's difference, the sealed effect of hemostasis also is different, and the hemostasis valve that the existing market is common has two kinds: rotary hemostasis valves and push-type hemostasis valves.

Wherein the rotary hemostasis valve has the following action modes: set up in the hemostasis valve and have opening passageway sealing elastomer, the pipe passes through from opening passageway, and twist grip extrusion part carries out the axial extrusion to sealing elastomer to make sealing elastomer opening passageway and the laminating of pipe surface, realize the sealed effect of stanching. The method has the following defects: during operation and movement of the catheter, the elastomer cannot be squeezed too tightly, and at the moment, a certain degree of blood leakage can occur in the sheath. In addition, upon insertion and removal of the catheter, the hemostatic valve and blood vessel are completely in the way, losing the sealing effect. The action mode of the pressing type hemostatic valve is as follows: the hemostatic valve is provided with a semi-sealed elastomer, and the elastomer is provided with a linear notch extending outwards from a central point, so that the elastomer allows the catheter to pass through and is attached to the outer surface of the catheter, and the sealing function is realized. The method has the following defects: the elastomer can not timely recover deformation at the moment that the catheter enters or withdraws from the linear incision of the elastomer, and a crack gap can be formed under the action of blood pressure, so that the condition of leaking blood to a certain degree occurs. The design improves the defects of the hemostatic valve, and the sheath tube with more excellent sealing performance and more flexible operation is obtained.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a sheath tube with a composite structure hemostasis valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a sheath tube with a composite structure hemostasis valve comprises a shell, wherein one end of the shell is connected with a hollow head end fixing piece, and one end of the head end fixing piece is fixedly connected with a sheath tube body;

the inside of casing be provided with the inside fixed connection's of head end mounting infundibulate elastomer, just the outside of elastomer is provided with the spring part, through the rotation of spring part lower extreme fixed connection's rotating member, control the shrink and the expansion of spring part, in order to control the shrink and the expansion of elastomer.

As a further description of the above technical solution: the below swing joint of casing has the base, one side of sheath pipe body is connected with the hose, the head end of hose is connected with the three-way valve.

As a further description of the above technical solution: the elastomer is a hollow part with two thick ends and a thin middle end.

As a further description of the above technical solution: one end of the elastic body is an opening end, the other end of the elastic body is a closed end, and two sides of the closed end are provided with linear notches which are perpendicular to each other.

As a further description of the above technical solution: the two sides of the shell are provided with openings through which the rotating piece is communicated with the outside.

As a further description of the above technical solution: the closed end of the elastic body is concave to form an arc top structure.

As a further description of the above technical solution: the base is of a hollow structure and is mechanically connected with the bottom of the shell through a threaded structure.

As a further description of the above technical solution: the spring piece is sleeved at the middle end of the elastic body.

As a further description of the above technical solution: the middle end and the lower end of the elastic body form an instrument exchange area.

As a further description of the above technical solution: one end of the spring piece is fixed in the groove at one end of the rotating piece.

The utility model discloses following beneficial effect has:

1. the utility model discloses a spring of screwing, the spring evenly tightens up to the circumferencial direction, extrudees the elastomer interlude, controls opening and shutting of interlude passageway, and traditional axial extrusion elastomer's mode relatively, this design more is favorable to elastomer and pipe laminating, is difficult to produce the crack.

2. The utility model discloses a can form an "apparatus exchange area" between the invariable sealed section of the middle controllable sealed section of elastomer of infundibulate and near-end, when middle controllable sealed section is closed, the pipe insert, extract or exchange operations such as other apparatus, can accomplish in the exchange area, do not influence the sheath pipe sealing state that stanchs.

3. The utility model discloses an adjusting spring part degree of screwing can control elastomer and pipe and paste tight degree to the pipe removes in the operation.

4. The utility model is beneficial to the lamination of the elastomer and the conduit through the positive and negative 'one' cuts at the closed end of the elastomer, and the crack is not easy to form; the inward concave arc top structure at the closed end is extruded towards the near end under the action of blood pressure, which is beneficial to the closure of a linear incision and improves the sealing property

Drawings

Fig. 1 is a perspective view of a sheath tube with a hemostatic valve of composite structure according to the present invention;

fig. 2 is a front view of a sheath tube with a hemostatic valve of composite structure according to the present invention;

fig. 3 is a cross-sectional view of a sheath tube with a hemostatic valve of composite structure according to the present invention;

fig. 4 is an exploded view of a sheath tube with a hemostatic valve of composite structure according to the present invention;

fig. 5 is an exploded cross-sectional view of a sheath with a hemostatic valve of composite structure according to the present invention;

fig. 6 is a perspective view of an elastic body of a sheath tube with a hemostatic valve of composite structure according to the present invention;

fig. 7 is a perspective view of another perspective view of the elastic body of the sheath tube with the hemostatic valve of composite structure according to the present invention;

fig. 8 is a sectional view of the elastic body of the sheath tube with the hemostatic valve of composite structure according to the present invention.

Illustration of the drawings:

1. a housing; 2. a head end fixing member; 3. a sheath tube body; 4. an elastomer; 5. a spring member; 6. a rotating member; 7. a base; 8. a hose; 9. and a three-way valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not 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; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-8, the present invention provides an embodiment: a sheath tube with a composite structure hemostasis valve comprises a shell 1, wherein one end of the shell 1 is connected with a hollow head end fixing piece 2, and one end of the head end fixing piece 2 is fixedly connected with a sheath tube body 3;

the inside of casing 1 is provided with the infundibulate elastomer 4 with the inside fixed connection of head end mounting 2, and the outside of elastomer 4 is provided with spring part 5, and through the rotation of 5 lower extreme fixed connection's of spring part rotating member 6, the shrink and the expansion of control spring part 5 to the shrink and the expansion of control elastomer 4.

According to the technical scheme, the internal sealing elastic body 4 of the hemostatic valve is in a funnel shape; the two ends are thick and the middle section is thin. The elastic body 4 is externally provided with a spring element 5 with matched size, the distal end of the spring element 5 is fixed on the shell 1 of the hemostatic valve, and the proximal end is fixed on a rotating element 6. When the rotating piece 6 is rotated, the spring is tightened, the diameter of the inner ring is reduced, so that the middle thin section of the elastic body 4 is uniformly extruded and contracted, the closing size of the middle section is controlled, the middle section is tightly attached to the outer surfaces of different catheters or instruments, the near-end constant sealing end is a thick-opening section of the elastic body 4 connected with the base, the far end of the elastic body 4 is an opening end, and the near end of the elastic body 4 is a closed end. Through rotating 6 movements of driving the spring part of rotating member, make the spring part evenly tighten up to the circumferencial direction, 4 interlude of extrusion elastomer, the opening and shutting of control interlude passageway, traditional axial extrusion elastomer's mode relatively, this device more is favorable to elastomer 4 and pipe laminating, be difficult to produce the crack, simultaneously through the elastomer 4 of infundibulate, the interlude can form "apparatus exchange area" for between controllable seal section and the invariable seal section of near-end, when controllable seal section in the middle of is closed, implement the pipe and insert, extract or exchange operations such as other apparatus and can accomplish in "apparatus exchange area", can not influence sheath pipe hemostasis encapsulated situation.

Further, the lower part of the shell 1 is movably connected with a base 7, one side of the sheath tube body 3 is connected with a hose 8, the head end of the hose 8 is connected with a three-way valve 9, an inner cavity opening of the sheath tube body 3 is connected with the hose 8, liquid can be conveyed to the inside of the sheath tube body 3 through the hose 8, and the three-way valve 9 is used for controlling the closing and opening of the passage.

Furthermore, the elastic body 4 is a hollow part with two thick ends and a thin middle end, when the rotating part 6 rotates towards one direction, the spring part 5 is driven to rotate, the spring ring is tightened, the diameter is reduced, the middle end of the spring extrudes the middle end of the internal funnel-shaped elastic body 4, and the middle channel of the elastic body is closed; when the rotary member 6 is rotated in the opposite direction, the middle passage of the elastic body 4 is opened.

Further, as shown in fig. 6-8, one end of the elastic body 4 is an open end, the other end is a closed end, and two sides of the closed end are provided with mutually perpendicular linear incisions, the linear incisions are in a shape of a straight line, and the two mutually perpendicular straight lines form a cross shape, so that the attachment of the elastic body 4 and the catheter is facilitated, and a crack is not easily formed. The closed end of the elastic body 4 is concave to form an arc top structure, the closed end is the concave arc top structure, and the closed end is extruded towards the direction close to the base 7 under the action of blood pressure, so that the linear incision is more favorably closed, and the whole sealing performance is improved.

Further, openings are formed through both sides of the housing 1, and the rotary member 6 is communicated with the outside through the openings.

Further, the base 7 is a hollow structure, and the base 7 is mechanically connected with the bottom of the shell 1 through a thread structure, and meanwhile, the inside of the base 7 and the outside of the shell 1 are provided with matched grooves, and the grooves formed by the two are consistent with the structure of the proximal end of the elastic body 4, so that the proximal end of the elastic body 4 can be fixed, and sealing is kept.

Further, the spring piece 5 is sleeved at the middle end of the elastic body 4, so that the elastic body 4 can be controlled more easily.

Further, the middle and lower ends of the elastic body 4 constitute an instrument exchange region.

Furthermore, one end of the spring element 5 is fixed in the groove at one end of the rotating element 6, the other end of the spring element 5 is fixed with the groove inside the shell 1 in a glue injection mode, and the outer part of the rotating element 6 is provided with a thread matched with the shell 1 and can rotate and move in the shell 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a sheath pipe with composite construction hemostasis valve which characterized in that: the sheath catheter comprises a shell (1), wherein one end of the shell (1) is connected with a hollow head end fixing piece (2), and one end of the head end fixing piece (2) is fixedly connected with a sheath catheter body (3);

the inside of casing (1) be provided with inside fixed connection's of head end mounting (2) infundibulate elastomer (4), just the outside of elastomer (4) is provided with spring part (5), through the rotation of spring part (5) lower extreme fixed connection's rotating member (6), control the shrink and the expansion of spring part (5), in order to control the shrink and the expansion of elastomer (4).

2. A sheath with a composite-structured hemostatic valve according to claim 1, wherein: the below swing joint of casing (1) has base (7), one side of sheath pipe body (3) is connected with hose (8), the head end of hose (8) is connected with three-way valve (9).

3. A sheath with a hemostatic valve of composite construction according to claim 1, wherein: the elastic body (4) is a hollow part with two thick ends and a thin middle end.

4. A sheath with a composite-structured hemostatic valve according to claim 1, wherein: one end of the elastic body (4) is an open end, the other end of the elastic body is a closed end, and linear notches which are perpendicular to each other are arranged on two sides of the closed end.

5. A sheath with a hemostatic valve of composite construction according to claim 1, wherein: the two sides of the shell (1) are provided with holes in a penetrating mode, and the rotating piece (6) is communicated with the outside through the holes.

6. A sheath with a composite-structured hemostatic valve according to claim 1, wherein: the closed end of the elastic body (4) is concave to form an arc top structure.

7. A sheath with a composite-structured hemostatic valve according to claim 2, wherein: the base (7) is of a hollow structure, and the base (7) is mechanically connected with the bottom of the shell (1) through a threaded structure.

8. A sheath with a hemostatic valve of composite construction according to claim 1, wherein: the spring piece (5) is sleeved at the middle end of the elastic body (4).

9. A sheath with a composite-structured hemostatic valve according to claim 1, wherein: the middle end and the lower end of the elastic body (4) form an instrument exchange area.

10. A sheath with a hemostatic valve of composite construction according to claim 1, wherein: one end of the spring piece (5) is fixed in a groove at one end of the rotating piece (6).