CN211512862U

CN211512862U - Adsorber casing

Info

Publication number: CN211512862U
Application number: CN201921723346.9U
Authority: CN
Inventors: 高光勇; 秦继忠; 唐金龙; 王松; 蒋申勇
Original assignee: Chongqing Tianwaitian Biotechnology Co Ltd
Current assignee: Chongqing Tianwaitian Biotechnology Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-09-18
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses an adsorber shell, including the tube-shape casing, the entrance connection of tube-shape casing has spherical cap, and the import department spiro union of this spherical cap has the shell cap, and it is sealed through the sealing plug between spherical cap and the shell cap the tube-shape casing with the junction of spherical cap still is provided with sealed pad and filter screen rack. The utility model discloses a structural design of spherical cap has changed blood or plasma at the inside hydrodynamics of adsorber, makes blood or plasma flow evenly, no vortex, no mobile dead angle inside the adsorber, the availability factor of adsorbent has been improved, the probability that adverse reactions such as blood coagulation took place when having reduced the treatment, blood cell damage and hemolysis that blood and the striking of filter screen rack lead to when having avoided the treatment of whole blood perfusion ware to the safety in utilization and the validity of product have been improved.

Description

Adsorber casing

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to adsorber shell.

Background

In recent years, with the progress of material science, blood purification technology has been rapidly developed, and particularly, in the field of blood adsorption, the blood purification technology has been widely applied to a plurality of fields such as kidney diseases, poisoning, liver diseases, sepsis, immune diseases and the like. Blood adsorption refers to a treatment method for purifying blood and treating diseases by taking human blood out of the body, passing through an adsorber filled with an adsorbent, adsorbing and removing pathogenic substances in the blood through the contact of the blood and the adsorbent in the adsorber, and circulating the purified blood back to the human body.

The blood adsorber comprises a blood perfusion device and a plasma adsorber, the shell of the existing blood/plasma adsorber is formed by assembling multiple components and consists of a cylindrical shell, filter screen racks, a shell cover, a shell cap, a sealing gasket and a sealing plug, the cylindrical shell and the two filter screen racks form a cylindrical cavity as a space for filling an adsorbent, and the filter screens can prevent granular adsorbent from flowing out. There is sealed the pad in the middle of tube-shape casing and the cap, and tube-shape casing and cap pass through screw thread or ultrasonic bonding's mode and are connected, have the sealing plug in the middle of cap and the cap, and cap pass through the mode of screw thread and connect to form an overall inclosed adsorber shell, fill adsorbent and save liquid, ensure the sealed and aseptic condition of adsorber inner chamber.

When the blood adsorber is used, the shell cap is firstly unscrewed, the blood adsorber is connected with an extracorporeal blood circulation pipeline, the product is pre-flushed by using normal saline, then blood of a patient is led out through the puncture needle, the blood enters from a small blood nozzle opening on the inlet end cover, passes through the filter screen rack, reaches the inside of the blood adsorber, is in direct contact with the adsorbent, generates an adsorption effect, and finally flows out from a small blood opening on the outlet end cover of the adsorber, passes through the extracorporeal blood circulation pipeline and flows back to the body of the patient.

As shown in the attached figure 1, the shell cover in the prior art is a flat shell cover 1, the specific structural design is a sharp turning structure with a vertical angle or a nearly vertical angle, the filter screen 6 is very close to the shell cover 1, and the structure has the following problems:

(1) the flow velocity and the flow of the blood are unstable, the blood enters the cylindrical shell in a gushing shape, the flow velocity of the liquid close to the center of the cylindrical shell is higher, and the flow velocity of the liquid close to the cylindrical wall is lower, so that the blood is easy to generate vortex, the blood is not beneficial to fully contacting with the adsorbent in the adsorber, the use efficiency of the adsorbent is reduced, and the expected treatment effect cannot be achieved;

(2) when whole blood perfusion treatment is carried out, blood cells can violently collide with the filter screen frame, so that the blood cells are damaged, and adverse reactions of hemolysis and blood cell reduction are brought;

(3) during treatment, the fluid mechanics in the absorber of the blood is unstable, so that vortex and turbulent flow are formed, blood flowing dead angles are caused, and the risk of coagulation of the product during treatment is increased.

Disclosure of Invention

To the technical problem that exists at present, the utility model provides an adsorber shell to solve among the prior art because the various use problems that cap structure restriction leads to.

In order to achieve the purpose of the invention, the utility model provides the following technical scheme:

an adsorber shell comprises a cylindrical shell body, wherein a spherical shell cover is connected to the inlet end of the cylindrical shell body, a shell cap is screwed at the inlet of the spherical shell cover, the spherical shell cover and the shell cap are sealed through a sealing plug, and a sealing gasket and a filter screen frame are further arranged at the connection position of the cylindrical shell body and the spherical shell cover.

This scheme designs the entrance end cover of tube-shape casing into spherical cap structure, avoids adopting current flat cap structure, has avoided being the form of gushing when blood or plasma from the cap gets into and has got into in the tube-shape casing, makes the inside production that flows more even, no vortex and flow dead angle of blood or plasma at the adsorber.

Further, the spherical shell cover comprises a spherical arc surface, the spherical arc surface is connected with the circumference wall through a transition platform, the inner side of the circumference wall is connected with the cylindrical shell, a blood nozzle small opening is arranged on the spherical arc surface, the blood nozzle small opening is in threaded connection with the shell cap, the sealing plug is positioned in the shell cap, and the end part of the blood nozzle small opening abuts against the sealing plug.

Further, the inboard of transition platform is provided with the mounting groove, sealed the pad is installed in this mounting groove, the screen frame inlays and establishes sealed pad and tube-shape casing are last.

Furthermore, 8-36 wavy bulges are uniformly distributed on the outer side of the peripheral wall, and the thickness of each wavy bulge is 0.5-10 mm.

Furthermore, strip-shaped bulges are uniformly distributed on the outer side of the transition platform.

Further, the ratio of the distance H from the highest point of the arc of the spherical cambered surface to the arc starting surface to the diameter D of the arc starting surface of the spherical cambered surface is 1/5-1/2.

Further, the sealing plug is of a spherical structure.

The spherical sealing plug is adopted to solve the problems that the T-shaped seal or the cylindrical seal in the prior art needs to be assembled with the sealing piece in a specific direction and the sealing failure is caused by easy generation of permanent deformation, the spherical sealing piece can be assembled from any angle, the automatic assembly production can be effectively realized, the product quality can be effectively controlled, the production cost of the product is reduced, and the stability of the product quality is improved.

Further, a convex edge is arranged on the periphery of the cylindrical shell, and the end part of the peripheral wall abuts against the convex edge.

Furthermore, the inlet end and the outlet end of the cylindrical shell are respectively screwed with the spherical shell cover, the small blood nozzle opening of the spherical shell cover is screwed with the shell cap, and the shell cap and the small blood nozzle opening of the spherical shell cover are sealed through a sealing plug.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a structural design of spherical cap, the inside hydrodynamics state of blood or plasma entering adsorber has been changed, it is even to make blood or plasma flow in adsorber inside, no vortex, no mobile dead angle, the availability factor of adsorbent has been improved, the probability that adverse reaction such as coagulation takes place has been reduced in the treatment process, blood cell damage that blood and the striking of filter screen rack lead to when having avoided the treatment of whole blood perfusion ware, the hemolysis has been avoided, the emergence of bad phenomena such as hematocyte reduction, thereby the safety in utilization and the validity of product have been improved.

Description of the drawings:

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 3 is a front view of the spherical housing cover of FIG. 2;

FIG. 4 is an internal cross-sectional view of FIG. 3;

fig. 5 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of 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 therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The structure of the prior art is shown in the attached figure 1, wherein the end part of a cylindrical shell 2 is in threaded connection with a flat shell cover 1, a blood nozzle small opening of the flat shell cover 4 is sealed with a shell cap 3 through a T-shaped sealing plug 4, and a sealing gasket 5 is directly abutted against the inner side of the flat shell cover 1, so that the problems in the background art are very easy to occur in the using process.

The first embodiment as shown in fig. 2-4 comprises a cylindrical shell 2, an inner cavity of the cylindrical shell 2 is filled with an adsorbent, both an inlet end and an outlet end of the cylindrical shell 2 are provided with screw threads, the inlet end of the cylindrical shell 2 is screwed with a spherical shell cover 7, the outlet end of the cylindrical shell 2 is screwed with a flat shell cover 1, a blood nozzle small opening 72 of the spherical shell cover 7 is screwed with a shell cap 3, the spherical shell cover 7 and the shell cap 3 are sealed by a sealing plug 8, and a sealing gasket 5 and a filter screen frame 6 are further arranged at the joint of the cylindrical shell 2 and the spherical shell cover 7.

The cylindrical housing 2 may not have threads, and in this case, the cylindrical housing 2 is welded or otherwise connected to the spherical housing cover 7 and the flat housing cover 1.

As can be seen from fig. 3 and 4 in conjunction with fig. 2, the spherical shell cover 7 includes a spherical arc 71, the spherical arc 71 is connected to a peripheral wall 74 through a transition platform 73, convex edges 21 are respectively disposed on the outer periphery of the cylindrical shell 2 near the screw threads at both ends, and the end of the peripheral wall 74 abuts against the convex edges 21. Evenly distributed has strip protruding 77 in the outside of transition platform 73, and this strip protruding 77 is 4 ~ 36, and its thickness is 0.1 ~ 2mm, is provided with mounting groove 75 in the inboard of transition platform 73, and sealed 5 installs in this mounting groove 75, and filter screen rack 6 inlays to be established in the sealed position department that is connected with tubular casing 2 of filling up 5. The peripheral wall 74 is in threaded connection with the external threads on the cylindrical shell 2 through the threads arranged on the inner side of the peripheral wall, 8-36 wavy bulges 76 are uniformly distributed on the outer side of the peripheral wall 74, and the thickness of the wavy bulges 76 protruding out of the peripheral wall 74 is 0.5-10 mm, so that on one hand, force application is facilitated, and on the other hand, the appearance is attractive. Be provided with blood mouth osculum 72 on the spherical cambered surface 71, sealed pad 5 is close to one side of this blood mouth osculum 72, this blood mouth osculum 72 and shell cap 3 spiro union to sealing plug 8 is located this shell cap 3, and the tip of blood mouth osculum 72 supports on this sealing plug 8, and sealing plug 8 is spherical structure in this embodiment.

In order to improve the fluidity and the flow stability of blood or plasma, the ratio of the distance H from the highest point of the arc of the spherical arc surface 71 to the arc starting surface to the diameter D of the arc starting surface of the spherical arc surface 71 is designed to be 1/5-1/2.

Fig. 5 shows a second embodiment of the present invention, which is different from the previous embodiment in that a spherical shell cover 7 is connected to the inlet end and the outlet end of the cylindrical shell 2, a blood nozzle small opening 72 of the spherical shell cover 7 is screwed with a shell cap 3, the shell cap 3 and the blood nozzle small opening 72 of the spherical shell cover 7 are sealed by a sealing plug 8, and the structures of the spherical shell cover 7, the sealing plug 8 and the shell cap 3 in the present embodiment are the same as the previous embodiment, so detailed description is omitted here, and specific reference may be made to the description of the previous embodiment.

The foregoing describes preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. An adsorber housing comprising a cylindrical housing (2), characterized in that: the inlet end of the cylindrical shell (2) is connected with a spherical shell cover (7), the inlet of the spherical shell cover (7) is connected with a shell cap (3) in a threaded mode, the spherical shell cover (7) and the shell cap (3) are sealed through a sealing plug (8), and a sealing gasket (5) and a filter screen rack (6) are further arranged at the connecting position of the cylindrical shell (2) and the spherical shell cover (7).

2. The adsorber housing of claim 1, wherein: spherical cap (7) include spherical cambered surface (71), and this spherical cambered surface (71) is connected with week bi (74) through transition platform (73), the inboard of this week bi (74) with tube-shape casing (2) are connected, be provided with blood mouth osculum (72) on spherical cambered surface (71), this blood mouth osculum (72) with shell cap (3) spiro union, and sealing plug (8) are located this shell cap (3), the tip of blood mouth osculum (72) is supported on this sealing plug (8).

3. The adsorber housing of claim 2, wherein: the inboard of transition platform (73) is provided with mounting groove (75), sealed pad (5) are installed in this mounting groove (75), screen net rack (6) are inlayed and are established sealed pad (5) and tube-shape casing (2) are last.

4. The adsorber housing of claim 3, wherein: 8-36 wavy bulges (76) are uniformly distributed on the outer side of the peripheral wall (74), and the thickness of each wavy bulge (76) is 0.5-10 mm.

5. The adsorber housing of claim 4, wherein: strip-shaped bulges (77) are uniformly distributed on the outer side of the transition platform (73).

6. The adsorber housing of claim 3, wherein: the ratio of the distance H from the highest point of the arc of the spherical arc surface (71) to the arc starting surface to the diameter D of the arc starting surface of the spherical arc surface (71) is 1/5-1/2.

7. The adsorber housing of claim 1, wherein: the sealing plug (8) is of a spherical structure.

8. The adsorber housing of any of claims 2 to 6, wherein: a convex edge (21) is arranged on the periphery of the cylindrical shell (2), and the end part of the peripheral wall (74) is abutted against the convex edge (21).

9. The adsorber housing of any of claims 2 to 6, wherein: the inlet end and the outlet end of the cylindrical shell (2) are respectively connected with the spherical shell cover (7), a blood nozzle small opening (72) of the spherical shell cover (7) is in threaded connection with the shell cap (3), and the shell cap (3) and the blood nozzle small opening (72) of the spherical shell cover (7) are sealed through a sealing plug (8).