CN111450406A

CN111450406A - Sealing sheet and hemostatic valve

Info

Publication number: CN111450406A
Application number: CN202010315700.5A
Authority: CN
Inventors: 黄旭明; 柯明武
Original assignee: Shenzhen Shenghao Technology Co ltd
Current assignee: Shenzhen Shenghao Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-07-28

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a sealing sheet and a hemostatic valve. The gasket is used for cooperating the structure, and the pipeline has been seted up to the structure, and the pipeline has the mouth of pipe that is located the structure surface. The sealing piece is made by elastic material and the gland mouth of pipe, the sealing piece has the first terminal surface that deviates from the structure setting and the second terminal surface of gland in the mouth of pipe, first joint-cutting has been seted up to first terminal surface, the degree of depth of first joint arbitrary point is less than the sealing piece in this department along the thickness of first joint-cutting degree of depth direction, the second joint-cutting has been seted up to the second terminal surface, the degree of depth of second joint arbitrary point is less than the sealing piece in this department along the thickness of second joint-cutting degree of depth direction, first joint-cutting and second joint-cutting cross arrangement, and first joint-cutting and second joint-cutting communicate in crossing department. The valve improves the sealing of instruments and also improves the sealing performance of the sealing sheet.

Description

Sealing sheet and hemostatic valve

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a sealing sheet and a hemostatic valve.

Background

At present, as an auxiliary access device for arteriovenous interventional operation, a catheter sheath plays an important role in interventional therapy, the catheter sheath device is mainly used as an auxiliary device for cardiovascular interventional diagnosis and treatment, and in PTCA and PCI forming operations, the catheter sheath guides a catheter sheath into a blood vessel by a guide wire through a blood vessel puncture technology, so that an in vitro-to-blood vessel access is established, and other devices can be used for intervention, medicine injection or hemodynamic monitoring and the like; the back end of the sheath usually contains an important anti-leakage device, the anti-leakage device is mainly used for preventing blood loss and providing insertion of the tube body after the sheath is inserted, the anti-leakage device is generally embodied in the form of a hemostatic valve, the hemostatic valve can meet the requirements of subsequent diagnosis and smooth entering of a treatment catheter on one hand and diagnose and treat a patient on the other hand, and has a good sealing effect on the other hand, so that the blood loss after the sheath is inserted is prevented, or air embolism caused by air entering in the process of inserting the catheter in a pumping way is prevented.

The existing hemostatic valve comprises a sealing sheet for inserting instruments, wherein a cutting slit is usually formed in the outer surface of the sealing sheet, and the cutting slit extends to the inner surface of the sealing sheet along the thickness direction of the sealing sheet, so that the instruments are inserted into the hemostatic valve from the cutting slit and are wrapped by the expansion elasticity of the sealing sheet. However, the whole cutting slit extends from the outer surface of the sealing sheet to the inner surface of the sealing sheet, so that the sealing effect on the instrument is not ideal when the instrument is inserted into the cutting slit, the sealing performance is easy to reduce after long-term use or when the sealing sheet is not inserted by the instrument, and the risk of an operation is increased to a certain extent.

Disclosure of Invention

An object of this application embodiment is to provide a sealing piece, aims at solving the problem that how to improve the sealing performance of sealing piece in the use of hemostasis valve.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the sealing sheet is matched with a structural part, the structural part is provided with a pipeline, the pipeline is provided with a pipe orifice positioned on the surface of the structural part, the sealing sheet is made of elastic materials and covers the pipe orifice, the sealing sheet is provided with a first end surface deviating from the structural part and a second end surface covering the pipe orifice, a first cutting seam is formed on the first end surface, the depth of any point of the first cutting seam is smaller than the thickness of the sealing sheet at the point along the depth direction of the first cutting seam, a second cutting seam is formed on the second end surface, the depth of any point of the second cutting seam is smaller than the thickness of the sealing sheet at the point along the depth direction of the second cutting seam, the first cutting seam and the second cutting seam are arranged in a crossed mode, and the first cutting seam is communicated with the second cutting seam at the crossed position.

In one embodiment, the first end face is provided with a first groove, the bottom of the first groove is cambered and is convexly arranged towards the pipe orifice, and the first slit is formed at the bottom of the first groove.

In one embodiment, the second end surface is provided with a second groove, the bottom of the second groove is an arc surface and protrudes towards the first end surface, and the second kerf is arranged at the bottom of the second groove.

In one embodiment, the edge of the pipe orifice is arranged in a plane, the position where the second end surface abuts against the edge of the pipe orifice is an arc surface and is arranged in a protruding mode towards the pipe orifice, two structural members are arranged, and the other structural member abuts against the first end surface and presses the first end surface towards the pipe orifice.

In one embodiment, the position where the second end surface abuts against the nozzle edge is a conical surface; and the first end surface is arranged in a plane, and the included angle range between any bus on the second end surface and the first end surface is as follows: 3 to 8 degrees.

In one embodiment, the depth direction of the first slits is the same as the depth direction of the second slits.

In one embodiment, the second end face is further provided with a third slit, the depth of any point of the third slit is smaller than the thickness of the sealing sheet at the point along the depth direction of the third slit, the third slit is intersected with the first slit, and the third slit passes through the intersection of the first slit and the second slit and is communicated with the second slit.

In one embodiment, the end surface is disposed in a plane, and the depth direction of the first slit, the depth direction of the second slit, and the depth direction of the third slit are perpendicular to the first end surface.

Another aim of this application still lies in providing a hemostasis valve, and it includes the gasket, hemostasis valve still includes sheath tube socket and sheath gland, the sheath tube socket has been seted up the pipeline, the constant head tank that is the loop configuration is seted up to orificial inner wall, the second end surface butt the tank bottom of constant head tank, the sheath gland in mouth of pipe department connects the sheath tube socket and court the tank bottom of constant head tank compresses tightly first terminal surface, the sheath gland corresponds the through-hole has been seted up to orificial position.

In one embodiment, the sheath gland is provided with a fixing groove, the extending path of the fixing groove is in an annular arrangement, and the edge of the pipe orifice is convexly provided with a fixing ring inwards the fixing groove, and the fixing ring is matched with the fixing groove.

The beneficial effect of this application lies in: the first cutting seam is arranged on the first end face and does not extend to the second end face, the second cutting seam is arranged on the second end face and does not extend to the first end face, the first cutting seam and the second cutting seam are arranged in a crossed mode and communicated at the crossed position, so that the first end face and the second end face of the sealing piece are communicated only at the crossed position of the first cutting seam and the second cutting seam, and the sealing performance of the sealing piece in the using process is improved; the instrument is inserted into the first cutting slit and the second cutting slit is inserted into the pipeline from the intersection of the first cutting slit and the second cutting slit, so that the instrument is sealed, and the sealing performance of the sealing sheet is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a hemostatic valve provided in an embodiment of the present application;

FIG. 2 is a cross-sectional view of the hemostatic valve of FIG. 1 taken along the depth of the first slit;

FIG. 3 is a schematic structural view of a sealing plate of the alternative embodiment of FIG. 2;

FIG. 4 is a schematic structural view of a sealing plate in yet another embodiment of FIG. 2;

figure 5 is a schematic cross-sectional view of the sealing disc of figure 2 in a natural state.

Wherein, in the figures, the respective reference numerals:

100. a hemostatic valve; 101. a sheath seat; 102. a sheath gland; 103. sealing the sheet; 21. a gland body; 22. pressing the sleeve; 24. a pipeline; 23. a through hole; 111. a first end face; 113. a first groove; 11. a first kerf; 13. a second kerf; 112. a second end face; 12. a second kerf; 114. a second groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application 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 present application and are not intended to limit the present application.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and 3, a sealing sheet 103 for use with a structural member is provided in accordance with an embodiment of the present invention. Wherein, pipeline 24 has seted up in the inside of structure, and pipeline 24 has the mouth of pipe that is located the structure surface. The sealing plate 103 is made of an elastic material and covers the spout, optionally the sealing plate 103 is cylindrical. Specifically, the sealing plate 103 is preferably a highly elastic polymer such as silicone rubber, or a thermoplastic elastomer such as TPU, TPE, or the like; i.e. with a certain elastic variation, to meet the sealing characteristics requirements. Referring to fig. 4 and 5, the sealing plate 103 has a first end surface 111 disposed away from the structural member and a second end surface 112 pressed at the tube opening and disposed toward the structural member. Optionally, the first end surface 111 is planar. The first end surface 111 is provided with a first slit 11, the depth of any point of the first slit 11 is smaller than the thickness of the sealing sheet 103 at the point along the depth direction of the first slit 11, that is, the first slit 11 does not extend to the second end surface 112 along the thickness direction of the sealing sheet 103, and a certain distance is provided between the bottom of the first slit 11 and the second end surface 112. The second end surface 112 is provided with a second slit 1213, the depth of any point of the second slit 1213 is less than the thickness of the sealing piece 103 at the point along the depth direction of the second slit 1213, i.e. the second slit 1213 does not extend to the first end surface 111 along the thickness direction of the sealing piece 103, and a certain distance is provided between the bottom of the second slit 1213 and the first end surface 111. The first slits 11 and the second slits 1213 are arranged to cross, that is, the depth of the first slits 11 and the depth of the second slits 1213 overlap, and the first slits 11 and the second slits 1213 are arranged to communicate with each other at the intersection. The included angle between the first slit 11 and the second slit 1213 is 45-75 °.

The first cutting slit 11 is formed on the first end face 111, the first cutting slit 11 does not extend to the second end face 112, the second cutting slit 1213 is formed on the second end face 112, the second cutting slit 1213 does not extend to the first end face 111, and the first cutting slit 11 and the second cutting slit 1213 are arranged in a crossed manner and communicated at the crossed position, so that the first end face 111 and the second end face 112 of the sealing piece 103 are communicated only at the crossed position of the first cutting slit 11 and the second cutting slit 1213, and the sealing performance of the sealing piece 103 in the using process is improved; insertion of the tool into the first slit 11 and the second slit 1213 from the intersection of the first slit 11 and the second slit 1213 into the interior of the tubing 24 improves the seal against the tool and improves the sealing performance of the sealing disc 103. Moreover, when the sealing disc 103 is not inserted by an instrument, the sealing of the inside of the duct 24 is improved, since the first 111 and second 112 end faces communicate only at the intersection of the first 11 and second 1213 slits.

Optionally, the first slit 11 and the second slit 1213 have a length range of: 3.2-4.4 mm.

In one embodiment, the first end surface 111 defines a first groove 113, a bottom of the first groove 113 is an arc surface and protrudes toward the nozzle, and the first slit 11 is defined at the bottom of the first groove 113. Specifically, the depth range of any point of the bottom of the first groove 113 is as follows: 0.4-0.6 mm, preferably 0.5 mm.

In one embodiment, the second end surface 112 defines a second groove 114, a bottom of the second groove 114 is curved and protrudes toward the first end surface 111, and the second slit 1213 defines a bottom of the second groove 114. Specifically, the groove depth range at any point of the groove bottom of the second groove 114 is: 0.15 to 0.3mm, preferably 0.2 mm.

Referring to fig. 3 and 5, alternatively, the cross-sectional shapes of the pipe 24, the first groove 113 and the second groove 114 are all circular, and the diameters of the first groove 113 and the second groove 114 are not larger than the diameter of the pipe 24.

In one embodiment, the edge of the nozzle is flat, and the second end surface 112 abuts the edge of the nozzle and is curved and convex toward the nozzle. When the first end surface 111 is horizontally disposed, the edge of the second end surface 112 is tilted upward, and the edge of the second end surface 112 is closer to the first end surface 111 than the center position of the second end surface 112. That is, the intersection of the cross section of the central position of the second end surface 112 and the second end surface 112 is a parabola. The structure is provided with two, two structures butt first terminal surface 111 and second terminal surface 112 respectively, and the gasket 103 compresses tightly between two structures, make second terminal surface 112 laminate mouth of pipe edge through deformation by original curved surface, because the mouth of pipe edge is the plane setting, thereby also be the plane setting after making second terminal surface 112 take place to deform, and then pull first terminal surface 111 and take place to deform to second terminal surface 112, first terminal surface 111 takes place to expand outward and increase the surface area promptly, thereby make the seam mouth of first seam 11 expanded slightly, thereby be favorable to the apparatus to insert first seam 11, and the plug-in nature of first seam 11 has been improved, make things convenient for not unidimensional apparatus to insert first seam 11 promptly.

Further, since the edge of the second end surface 112 is pressed on the edge of the nozzle, and the center position of the second end surface 112 is retracted toward the first end surface 111 by an upward force with the nozzle as a supporting point, the slit of the second slit 1213 is slightly retracted, so that the closing force of the slit of the second slit 1213 is improved, and the sealing performance is further improved. The arrangement that the first end surface 111 expands outwards and the second end surface 112 contracts inwards is not only beneficial to the insertion of long bodies such as catheters and guide wires into the first cutting seam 11 and improves the insertion performance, but also beneficial to the closer closing of the seam opening of the second cutting seam 1213 and the improvement of the sealing performance after the second end surface 112 is extruded by upward force and contracts inwards. Specifically, on one hand, in the process that the long bodies such as the guide tube and the guide wire are pulled out of the second cutting slit 1213, the seam opening of the second cutting slit 1213 is prevented from turning up towards the inside of the second cutting slit 1213, so that leakage or air enters the pipeline 24 is avoided, and on the other hand, after the long bodies such as the guide tube and the guide wire are finally pulled out, the second cutting slit 1213 is tightly closed, so that the sealing of the sealing piece 103 in the pipeline 24 can be ensured, the sealing performance of the final sealing piece 103 is improved, and the service life of the sealing piece 103 is prolonged.

In one embodiment, the position where the second end face 112 abuts the edge of the nozzle is a conical surface; and the first end face 111 is arranged in a plane, and the included angle range between any generatrix on the second end face 112 and the first end face 111 is as follows: 3 to 8 degrees. That is, the cross section of the central position of the second end surface 112 and the intersection line of the second end surface 112 are in a V shape.

Referring to fig. 2 and 4, in an embodiment, the second end surface 112 further has a third slit, a depth of any point of the third slit is smaller than a thickness of the sealing piece 103 at the point along a depth direction of the third slit, the third slit intersects with the first slit 11, and the third slit passes through an intersection of the first slit 11 and the second slit 1213 and is communicated with the second slit 1213. The length direction of the third cutting seam and the length direction of the first cutting seam 11 are arranged in an X shape, and the included angle range of the first cutting seam 11 and the third cutting seam is as follows: 30 to 90 degrees, preferably 60 degrees. The included angle between the third cutting slit and the second cutting slit 1213 is 45-75 deg.

Alternatively, the angle between the first slits 11 and the second slits 1213, the angle between the first slits 11 and the third slits, and the angle between the second slits 1213 and the third slits are all 60 °.

It will be appreciated that as the first end surface 111 flares, the slit opening of the second slits 1213 also increases slightly, further improving the penetration of the sealing disc 103. Optionally, the length range of the third slit is: 3.2-4.4 mm.

Optionally, the depth of the first slit 11 and the third slit ranges from 0.7 to 1.4mm, preferably 1mm, and the depth of the second slit 1213 ranges from 0.5 to 1.2mm, preferably 1 mm.

In one embodiment, the depth direction of the first slits 11 is arranged the same as the depth direction of the second slits 1213. Optionally, the first end surface 111 is disposed in a plane, and the included angle between the depth direction of the first slit 11 or the depth direction of the second slit 1213 and the first end surface 111 is greater than zero and less than ninety degrees.

In one embodiment, the first end surface 111 is planar, and the depth direction of the first slit 11, the depth direction of the second slit 1213, and the depth direction of the third slit are perpendicular to the first end surface 111.

The application also provides a hemostatic valve 100, the hemostatic valve 100 includes a sealing sheet 103, and the specific structure of the sealing sheet 103 refers to the above-mentioned embodiments, and since the hemostatic valve 100 adopts all technical solutions of all the above-mentioned embodiments, all beneficial effects brought by the technical solutions of the above-mentioned embodiments are also achieved, and are not repeated herein.

Referring to fig. 2 and 4, in an embodiment, the hemostatic valve 100 further includes a sheath tube seat 101 and a sheath pressing cover 102, the sheath tube seat 101 defines a conduit 24, the inner wall of the nozzle defines a positioning groove having a ring shape, the second end surface 112 abuts against a bottom of the positioning groove, the sheath pressing cover 102 is connected to the sheath tube seat 101 at the nozzle and presses the first end surface 111 toward the bottom of the positioning groove, and the sheath pressing cover 102 defines a through hole 23 at a position corresponding to the nozzle. Alternatively, the sheath pressing cover 102 and the sheath tube seat 101 may be connected by welding or gluing, the sealing sheet 103 may have an excessive pressing amount when not compressed, and after the sheath pressing cover 102 and the sheath tube seat 101 are pressed, the peripheral edge of the sealing sheet 103 deforms and is compressed toward the sheath tube seat 101.

In one embodiment, the sheath pressing cover 102 defines a fixing groove, the extending path of the fixing groove is in a ring shape, and the edge of the nozzle is provided with a fixing ring protruding inwards the fixing groove, and the fixing ring is matched with the fixing groove.

In one embodiment, the sheath pressing cover 102 includes a pressing cover body 21 defining the fixing groove and the through hole 23, and a pressing sleeve 22 connecting the pressing cover body 21 and communicating the through hole 23, wherein the pressing sleeve 22 abuts against the end surface of the first end surface 111 and is arranged in a conical shape and protrudes toward the first end surface 111, so that when the pressing sleeve 22 presses the first end surface 111, the edge of the first end surface 111 can be better driven to expand outwards, and the first end surface 111 is integrally expanded outwards, thereby facilitating the insertion of an instrument into the first incision 11. The inner wall of the collet 22 is angled to guide the instrument through the sheath gland 102.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A sealing sheet is used for being matched with a structural part, the structural part is provided with a pipeline, the pipeline is provided with a pipe orifice positioned on the surface of the structural part, the sealing sheet is made of elastic materials and covers the pipe orifice, the sealing sheet is provided with a first end face deviating from the structural part and a second end face covering the pipe orifice, a first cutting seam is formed in the first end face, the depth of any point of the first cutting seam is smaller than the thickness of the sealing sheet at the point along the depth direction of the first cutting seam, a second cutting seam is formed in the second end face, the depth of any point of the second cutting seam is smaller than the thickness of the sealing sheet at the point along the depth direction of the second cutting seam, the first cutting seam and the second cutting seam are arranged in a crossed mode, and the first cutting seam and the second cutting seam are communicated at the crossed position.

2. The sealing sheet of claim 1 wherein: first recess has been seted up to first terminal surface, the tank bottom of first recess is the cambered surface and towards the mouth of pipe is protruding to be set up, first slot is seted up in the tank bottom of first recess.

3. The sealing sheet of claim 1 wherein: the second end surface is provided with a second groove, the bottom of the second groove is an arc surface and is arranged in a protruding mode towards the first end surface, and the second cutting seam is arranged at the bottom of the second groove.

4. The sealing sheet of claim 1 wherein: the mouth of pipe edge is the plane setting, the second terminal surface butt the position at mouth of pipe edge is the cambered surface and court the mouth of pipe is protruding to be set up, the structure is provided with two, another the structure butt first terminal surface and court the mouth of pipe compresses tightly first terminal surface.

5. The sealing sheet of claim 4 wherein: the position of the second end surface, which is abutted against the edge of the pipe orifice, is a conical surface; and the first end surface is arranged in a plane, and the included angle range between any bus on the second end surface and the first end surface is as follows: 3 to 8 degrees.

6. The sealing sheet of claim 1 wherein: the depth direction of the first slits is the same as the depth direction of the second slits.

7. The sealing sheet of claim 1 wherein: the second end face is further provided with a third cutting slit, the depth of any point of the third cutting slit is smaller than the thickness of the sealing sheet at the point along the depth direction of the third cutting slit, the third cutting slit and the first cutting slit are arranged in a crossed mode, and the third cutting slit passes through the intersection of the first cutting slit and the second cutting slit and is communicated with the second cutting slit.

8. The sealing sheet of claim 7 wherein: the first end surface is arranged in a plane, and the depth direction of the first cutting seam, the depth direction of the second cutting seam and the depth direction of the third cutting seam are all perpendicular to the first end surface.

9. A hemostatic valve, comprising: the sealing disc of any one of claims 1 to 8, wherein the hemostatic valve further comprises a sheath tube seat and a sheath pressing cover, the sheath tube seat is provided with the pipeline, the inner wall of the tube opening is provided with a positioning groove in an annular structure, the second end surface abuts against the bottom of the positioning groove, the sheath pressing cover is connected with the sheath tube seat at the tube opening and presses the first end surface towards the bottom of the positioning groove, and the sheath pressing cover is provided with a through hole corresponding to the tube opening.

10. The hemostatic valve according to claim 9, wherein: the sheath gland is provided with a fixing groove, the extending path of the fixing groove is annularly arranged, the edge of the pipe orifice is convexly provided with a fixing ring towards the inside of the fixing groove, and the fixing ring is matched with the fixing groove.