CN219090832U

CN219090832U - Hemostatic valve

Info

Publication number: CN219090832U
Application number: CN202221777592.4U
Authority: CN
Inventors: 李云云; 王于锋
Original assignee: Huanxin Medical Technology Suzhou Co ltd
Current assignee: Huanxin Medical Technology Suzhou Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2023-05-30
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a hemostatic valve, which adopts an insertion card reinforcing structure formed by single or multiple groups of convex blocks and grooves which are arranged in pairs and are matched for insertion, and reinforces an outer cavity block and an inner cavity membrane, wherein two ends of the outer cavity block and the inner cavity membrane respectively extend into a space between a proximal valve seat and an outer cavity block and a space between a distal valve seat and the outer cavity block, so that the resistance for resisting the axial stress of the outer cavity block and the inner cavity membrane from leaving the original position is increased, the stable work of an annular saccule structure formed between the outer cavity block and the inner cavity membrane is ensured, and the product stability of the hemostatic valve is improved.

Description

Hemostatic valve

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a hemostatic valve.

Background

Both a sealing structure as disclosed in CN114452049a and a valve assembly for medical procedures as disclosed in US20090306598A1 disclose a specific structure of a hemostatic valve at the proximal end on a hydrophilic coating introducer sheath as commercially available. The hemostatic valve forms an annular cavity through the outer cylindrical silica gel and the inner cylindrical film which are connected between the valve seats at the two ends, the annular cavity is filled with fluid to expand in volume to enable the elastic film to expand inwards and stack and squeeze to block the internal channel of the hemostatic valve, and the hemostatic valve always fits the shape of the outer edge of the medical instrument to keep blocking when the medical instrument enters and exits the channel, so that blood is prevented from overflowing. The two ends of the film are respectively sleeved with the valve seats at the two ends to be glued and pressed between the valve seats at the two ends and the silica gel, the two ends of the silica gel are respectively embedded and fixed between the valve seats at the two ends and the valve cover, and when the annular cavity is filled with fluid, the two ends of the film and the silica gel are subjected to pulling force towards the middle part of the film and the silica gel, but the film and the silica gel are kept stable under the action of the fixing structure. Thus, the structural stability of the film and the silicone determines the product stability of the hemostatic valve.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the hemostatic valve with better product stability.

In order to achieve the above purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a hemostasis valve, includes coaxial proximal valve seat, proximal valve gap, distal valve seat, distal valve gap, inner chamber membrane and outer chamber piece that sets up, proximal valve seat and proximal valve gap insert the fastening and form the ring cylindricality cavity towards distal end open-ended between the two, distal valve seat and distal valve gap insert the fastening and form the ring cylindricality cavity towards proximal end open-ended between the two, inner chamber membrane and outer chamber piece all are the ring cylindricality and constitute by elastic material, and both equal, interior cover closes and both ends are stretched into the ring cylindricality cavity respectively and fill in the fastening, proximal valve seat distal end opening and distal valve gap proximal end opening interval are just right, offer the valve port that supplies the fluid to come in and go out on the outer chamber piece, form the passageway that supplies medical instrument to come in and go out in proximal valve seat, inner chamber membrane and the distal valve seat, all be equipped with the plug reinforcement structure between proximal valve seat and the outer chamber piece.

Preferably, the card-inserting reinforcing structure is represented by a single group or a plurality of groups of protruding blocks and grooves which are arranged in pairs and matched and inserted.

Preferably, the longitudinal section of the bump is one or more of triangle, quadrangle, semicircle and semi-ellipse.

Preferably, the cross section of the bump is a ring shape which is continuous in the circumferential direction.

Preferably, the cross section of the lug is a multi-section arc shape discontinuous in the circumferential direction.

Preferably, the outer cavity block is formed by silica gel and is integrally formed between the proximal valve cover and the distal valve cover through a die, and the two ends of the outer cavity block are respectively nested with the proximal valve cover and the distal valve cover for fastening.

Preferably, positioning rings are bonded at two ends of the inner cavity membrane, and the two ends of the inner cavity membrane are bonded with the proximal valve seat and the distal valve seat respectively.

Preferably, the outer diameter of the proximal valve seat distal end and the proximal valve seat proximal end are both gradually narrowed and convergent in shape.

Preferably, the parts between the proximal valve seat and the distal valve cover on the outer cavity block and the inner cavity membrane are bent inwards and sunken in a natural state.

Due to the application of the technical proposal, compared with the prior art, the utility model has the following

The beneficial effects are that:

the utility model adopts the insertion card reinforcing structure formed by single or multiple groups of convex blocks and grooves which are arranged in pairs and matched for insertion, and reinforces the outer cavity block and the inner cavity film which are respectively stretched into the space between the near-end valve seat and the outer cavity block and the space between the far-end valve seat and the outer cavity block, thereby increasing the resistance for resisting the axial stress of the outer cavity block and the inner cavity film from leaving the original position, ensuring the stable work of the annular saccule structure formed between the outer cavity block and the inner cavity film and improving the product stability of the hemostatic valve.

Drawings

Fig. 1 is a perspective view of one embodiment of a hemostatic valve according to the present utility model.

Figure 2 is a cross-sectional view of one embodiment of a hemostatic valve according to the present utility model.

Figure 3 is a schematic illustration of the longitudinal cross-sectional shape of the nubs and grooves in various other embodiments of a hemostatic valve according to the present utility model.

Fig. 4 is a schematic illustration of the cross-sectional shape of a boss in various other embodiments of a hemostatic valve according to the present utility model.

In the figure: 1. a proximal valve seat; 2. a proximal valve cap; 3. a distal valve seat; 4. a distal valve cap; 5. an inner cavity membrane; 6. an outer cavity block; 7. a valve port; 8. a channel; 9. a bump; 10. a groove; 11. and a positioning ring.

Detailed Description

The present utility model will be described in further detail with reference to specific embodiments (in the field of medical devices, proximal refers to the end of the medical device that is manipulated by an operator or outside the body, distal refers to the other end of the medical device that performs diagnostic/therapeutic functions or is inside the body, thereby extending to define the distal-proximal direction, and designating the distal and proximal ends of the individual components accordingly for the detailed description):

with reference to fig. 1 and 2, the present embodiment is a hemostasis valve, and is also a main component of the proximal end on the hydrophilic coating guiding sheath, and includes a proximal valve seat 1, a proximal valve cover 2, a distal valve seat 3, a distal valve cover 4, an inner cavity membrane 5 and an outer cavity block 6 coaxially disposed, the proximal valve seat 1 and the proximal valve cover 2 are fastened by inserting and fastening the two, a circular cylindrical cavity facing the distal opening is formed between the two, the distal valve seat 3 and the distal valve cover 4 are fastened by inserting and fastening the two, the inner cavity membrane 5 and the outer cavity block 6 are both substantially in a circular cylindrical shape and are made of elastic materials, the lengths of the two are equal, the two ends of the two are respectively sleeved into the circular cylindrical cavity for filling and fastening, the distal opening of the proximal valve seat 1 and the proximal opening of the distal valve cover 4 are opposite to each other, a valve port 7 for fluid to come in and go out is formed on the outer cavity block 6, a channel 8 for medical instruments to come in and go out is formed in the proximal valve seat 1, a reinforced valve seat structure is formed between the proximal valve seat 1 and the distal cavity membrane 5 and the distal cavity 3, and the outer cavity block 6 are provided with a card valve seat structure.

In the above embodiments and other embodiments of the present utility model:

referring to fig. 2 to fig. 4, the card reinforcement structure is shown as a single group or multiple groups of protruding blocks 9 and grooves 10 which are arranged in pairs and matched and plugged, in the embodiment, the card reinforcement structure is shown as two groups of protruding blocks 9 and grooves 10 which are matched and plugged and have semicircular longitudinal section shapes, two adjacent discontinuous protruding blocks 9 are arranged at two ends of the outer cavity block 6, two grooves 10 are correspondingly arranged on the proximal valve seat 1 and the distal valve seat 3, the two adjacent protruding blocks 9 can be continuous or discontinuous (corresponding to ab in fig. 3), the protruding blocks 9 can be arranged on the outer cavity block 6 or the proximal valve seat 1 and the distal valve seat 3 (corresponding to BC in fig. 3), the longitudinal section shapes of the protruding blocks 9 comprise, but are not limited to, one or more of triangular (corresponding to abc in fig. 3), quadrilateral (corresponding to d in fig. 3), semicircular (corresponding to e) and semi-elliptic (corresponding to f in fig. 3) (corresponding to g in fig. 3), the protruding blocks 9 are circumferentially continuous annular (corresponding to BC in cross section) in the circumferential direction, the protruding blocks 9 can be arranged in a plurality of sections (corresponding to the arc-shaped protruding blocks 9) which are not continuous in the circumferential direction (corresponding to BC in the circumferential direction) in the cross section (corresponding to the arc-shaped protruding blocks 4) and are arranged in the arc-shaped shape;

the outer cavity block 6 is formed by silica gel and is integrally formed between the proximal valve cover 2 and the distal valve cover 4 through a die, the proximal valve cover 2 and the distal valve cover 4 are respectively nested at two ends of the outer cavity block 6 and are fastened, and the outer cavity block 6, the proximal valve cover 2 and the distal valve cover 4 are integrally involved in the assembling process of the hemostatic valve;

the outer diameters of the far end of the near-end valve seat 1 and the near end of the far-end valve seat 3 are gradually narrowed, the shape is convergent, and a valve port 7 is arranged on the outer cavity block 6 at the near end of the corresponding far-end valve seat 3 and is communicated with a cavity formed between the outer cavity block 6 and the inner cavity membrane 5;

the inner cavity membrane 5 is formed by compounding one or more of PTFE membrane, TPU membrane and PE membrane, the two ends of the inner cavity membrane are adhered with positioning rings 11, the two ends of the inner cavity membrane 5 are adhered with a proximal valve seat 1 and a distal valve seat 3 respectively, the two ends of the inner cavity membrane 5 and the upper positioning rings 11 are respectively pressed between an outer cavity block 6 and the proximal valve seat 1 and between the outer cavity block 6 and the distal valve seat 3, the parts between the outer cavity block 6 and the proximal valve seat 1 and the distal valve cover 4 on the inner cavity membrane 5 are bent inwards in a natural state, an annular balloon structure is formed between the outer cavity block 6 and the inner cavity membrane 5, fluid is filled into the balloon from a valve port 7, the balloon volume is expanded to enable the outer cavity block 6 with a certain elasticity to slightly deform outwards, the inner cavity membrane 5 with a certain elasticity is expanded inwards to stack and squeeze to block a channel 8, and the outer edge shape of the medical instrument is always attached to keep blocking when the medical instrument enters and exits the channel 8, so that blood is prevented from overflowing.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a hemostasis valve, includes proximal valve seat (1), proximal valve lid (2), distal valve seat (3), distal valve gap (4), inner chamber membrane (5) and outer chamber piece (6) of coaxial setting, proximal valve seat (1) and proximal valve lid (2) are inside and outside to insert and close fastening and form between the two towards distal end open-ended annular cylindricality cavity, distal valve seat (3) and distal valve lid (4) are inside and outside to insert and close fastening and form between the two towards proximal end open-ended annular cylindricality cavity, inner chamber membrane (5) and outer chamber piece (6) are all approximately in the annular cylindricality and constitute by elastic material, and both length equals, inside and outside cover and both ends are equallyd and are equally stretched into annular cylindricality cavity and fill in the fastening, proximal end opening of proximal end valve seat (1) and distal end valve lid (4) are closely open-ended at the interval just, offer valve port (7) that supplies the fluid to come in and go out on outer chamber piece (6), form in proximal valve seat (1), inner chamber membrane (5) and distal end (3) and the medical instrument passageway (8), its characterized in that: and inserting and clamping reinforcing structures are arranged between the proximal valve seat (1) and the outer cavity block (6) and between the distal valve seat (3) and the outer cavity block (6).

2. A haemostatic valve according to claim 1, wherein: the insertion card reinforcing structure is characterized by comprising a single group or a plurality of groups of protruding blocks (9) and grooves (10) which are arranged in pairs and matched and inserted.

3. A haemostatic valve according to claim 2, wherein: the longitudinal section of the lug (9) is one or a combination of more of triangle, quadrangle, semicircle and semi-ellipse.

4. A haemostatic valve according to claim 2, wherein: the cross section of the lug (9) is a ring shape which is continuous in the circumferential direction.

5. A haemostatic valve according to claim 2, wherein: the cross section of the lug (9) is a multi-section arc shape discontinuous in the circumferential direction.

6. A haemostatic valve according to claim 1, wherein: the outer cavity block (6) is formed by silica gel and is integrally formed between the proximal valve cover (2) and the distal valve cover (4) through a die, and the proximal valve cover (2) and the distal valve cover (4) are respectively nested at two ends of the outer cavity block (6) and are fastened.

7. A haemostatic valve according to claim 1, wherein: positioning rings (11) are adhered to two ends of the inner cavity membrane (5), and the two ends of the inner cavity membrane (5) are adhered to the proximal valve seat (1) and the distal valve seat (3) respectively.

8. A haemostatic valve according to claim 1, wherein: the outer diameters of the far end of the near-end valve seat (1) and the near end of the far-end valve seat (3) are gradually narrowed, and the shape is convergent.

9. A haemostatic valve according to claim 1, wherein: the parts between the proximal valve seat (1) and the distal valve cover (4) on the outer cavity block (6) and the inner cavity membrane (5) are bent inwards and sunken in a natural state.