CN213312286U

CN213312286U - Blood perfusion device

Info

Publication number: CN213312286U
Application number: CN202020650886.5U
Authority: CN
Inventors: 郑飞; 陈荣胜; 王为超; 邢雪奎
Original assignee: Suzhou Tongkang Medical Technology Co ltd
Current assignee: Suzhou Tongkang Medical Technology Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-06-01
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a blood perfusion ware, include: the barrel is equipped with the adsorption chamber in the barrel, and barrel axial both ends all are equipped with the opening, and the opening is sealed by detachable end cover device, and end cover device includes: the end cover nut is in threaded connection with the end part of the cylinder body, and a through hole is formed in the end cover nut in a penetrating mode; the end cover body is positioned between the end cover nut and the adsorption chamber, and a blood nozzle is arranged on one end face of the end cover body; wherein, the blood mouth corresponds the setting with the through-hole to with adsorption chamber and outside intercommunication, so that in the blood inflow barrel of following one end, through the adsorption chamber, and flow out from another end blood mouth as blood. The utility model discloses simple structure, the good product rate is high.

Description

Blood perfusion device

Technical Field

The utility model belongs to the field of medical equipment, in particular to blood perfusion device.

Background

Hemoperfusion (HP) is a treatment technology for removing endogenous or exogenous toxicants and pathogenic substances in the blood of a patient by means of extracorporeal circulation and an adsorbent with a special adsorption function in a hemoperfusion device so as to achieve blood purification, and is a very effective blood purification treatment means in clinic at present.

In the prior art, only fastening threads matched with the end cover are arranged on the outer walls of the two ends of the cylinder body of the hemoperfusion apparatus, or a limiting lug or a check buckle is arranged to realize positioning with the end cover, and the end cover and the cylinder body are only sealed by one elastic sealing ring. The prior art has the defects that in the clinical pre-flushing or using process of the blood perfusion device, due to the fact that the pressure in the perfusion device is increased, the elastic sealing ring cannot keep sealing continuously, and pre-flushing liquid or blood leaks along threads.

The existing blood perfusion device has poor sealing effect, so that the perfusion device leaks in the clinical pre-flushing process, a series of complicated operations such as pipeline disassembly and perfusion device replacement need to be added when necessary, and the pre-flushing workload and treatment cost of medical institutions are increased; more importantly, the risk of blood loss and bacterial invasion of the patient due to leakage of the perfusion device during perfusion is increased, and the pain of the patient is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the deficiency in the above prior art, a blood perfusion device is provided.

In order to solve the technical problem, the utility model discloses a technical scheme is: a hemoperfusion cartridge comprising: including the barrel, be equipped with the adsorption chamber in the barrel, the axial both ends of barrel all are equipped with the opening, just the opening is sealed by detachable end cover device, its characterized in that, end cover device includes:

the end cover nut is in threaded connection with the end part of the cylinder body, and a through hole is formed in the end cover nut in a penetrating mode;

the end cover body is positioned between the end cover nut and the adsorption chamber, and a blood nozzle is arranged on one end face of the end cover body;

the blood nozzle is arranged corresponding to the through hole, the adsorption chamber is communicated with the outside, and the adsorption chamber is filled with a honeycomb adsorbent, so that blood flows into the cylinder from the blood nozzle at one end and flows out from the blood nozzle at the other end after passing through the adsorbent.

Preferably, the two end parts of the cylinder body are respectively provided with a filter screen, and the filter screens are positioned between the blood nozzle and the adsorption chamber; wherein, the filter screen includes the filter screen frame and locates filter screen piece in the filter screen frame, the filter screen frame with the barrel inner wall is connected.

Preferably, the end cover body is a circular piece, a blood nozzle is arranged on one end face of the end cover body, and an annular bulge surrounding the center of the end cover body is axially arranged on the other end face of the end cover body; the bottom end of the annular bulge is connected with the filter screen frame, and the side wall of the annular bulge is connected with the inner wall of the cylinder.

Preferably, a first sealing ring is arranged at the bottom end of the annular bulge, and a second sealing ring is arranged on the side wall of the annular bulge; wherein the first and second sealing rings are of an i-shaped cross-section.

Preferably, a first sealing groove is formed at the bottom end of the annular bulge, and a second sealing groove is formed in the side wall of the annular bulge; the first sealing groove and the second sealing groove are T-shaped grooves, the first sealing groove and the second sealing groove are perpendicular to each other, the first sealing ring is arranged in the first sealing groove, and the second sealing ring is arranged in the second sealing groove.

Preferably, the blood nozzle extends axially outward along the barrel to form a connecting tube.

Preferably, the radial outer ring of the connecting pipe is provided with a fixed pipe surrounding the connecting pipe, and the inner wall of the fixed pipe is provided with an internal thread.

Preferably, the device also comprises a protective cap, wherein an opening is formed in the middle of the protective cap, and a sealing column which is in threaded connection with the inner wall of the fixed pipe is arranged in the opening.

Preferably, the adsorbent is an adsorbent resin.

The utility model has the advantages that: the filter screen is used for blocking adsorption resin, the adsorption resin is placed into a human body, and adsorption resin particles are prevented from entering a blood nozzle along the side wall of the filter screen through the mutual matching of the first sealing ring and the first sealing groove; the sealing effect of the blood perfusion device is improved through the mutual matching of the second sealing ring and the second sealing groove, so that the perfusion device can be prevented from leaking in the clinical pre-flushing process, and the pre-flushing workload of medical institutions is reduced; more importantly, the risk that the blood of a patient is lost and the bacteria invade the blood due to leakage of the perfusion device in the perfusion process can be reduced, a series of complicated operations such as replacing the perfusion device by detaching a pipeline and the like are avoided, and the pain of the patient is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic cross-sectional view of the barrel of the present invention;

fig. 4 is a schematic structural view of the middle end cap nut of the present invention;

fig. 5 is a schematic structural view of the middle end cap body of the present invention;

fig. 6 is a schematic cross-sectional view of the middle cap nut of the present invention;

FIG. 7 is a schematic cross-sectional view of the middle protective cap of the present invention;

fig. 8 is an enlarged schematic view of a portion a of fig. 2.

Description of reference numerals:

1, a cylinder body; 2-end cover device; 3, protecting the cap; 4, filtering a screen; 5-a first sealing ring; 11-an adsorption chamber; 12-an opening; 21-end cap nut; 22 — an end cap body; 211-a through hole; 212-a groove; 221-blood mouth; 222-a connecting tube; 223-fixing the tube; 224-an annular projection; 225 — a first seal groove; 226 — a second seal groove; 31-sealing the column.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.

Referring to fig. 1-8, this embodiment provides a blood perfusion device, including barrel 1, is equipped with adsorption chamber 11 in the barrel 1, and barrel 1 axial both ends all are equipped with opening 12, and opening 12 is sealed by detachable end cover device 2, and end cover device 2 includes:

the end cover nut 21 is in threaded connection with the end part of the cylinder body 1, and a through hole 211 penetrates through the end cover nut 21;

the end cover body 22, the end cover body 22 is positioned between the end cover nut 21 and the adsorption chamber 11, and a blood nozzle 221 is arranged on one end face of the end cover body 22;

wherein, the blood nozzle 221 is arranged corresponding to the through hole 211, and connects the adsorption chamber 11 with the outside, and the adsorption chamber 11 is filled with honeycomb adsorbent, so that when blood flows into the cylinder 1 from the blood nozzle 221 at one end, it flows to the adsorption resin, and flows out from the blood nozzle 221 at the other end.

In the above-mentioned structure, the adsorbent is adsorption resin, and the inside hole of adsorption resin is cellular, sets up like this when the adsorption resin of blood flow through, can make blood circulation speed accelerate, and blood and adsorption resin can fully contact, and then adsorption resin can be more high-efficient, adsorbs the harmful substance in the blood more fast, shortens treatment time.

Referring to fig. 2-3, both ends of the cylinder 1 are provided with filter screens 4, and the filter screens 4 are located between the blood nozzle 221 and the adsorption chamber 11; wherein, filter screen 4 includes filter screen frame and locates the filter screen piece in the filter screen frame, and filter screen frame and 1 inner wall connection of barrel. Step structures are arranged at two ends of the barrel body 1, the filter screen 4 is placed in the step structures, and the outer wall of the filter screen frame in the filter screen 4 is in contact with the inner wall of the barrel body 1.

Referring to fig. 4, the end cap nut 21 is a cap having a cylindrical skirt, and a circular through hole 211 penetrating the end cap nut 21 is provided at a radially intermediate position thereof. A plurality of independent grooves 212 are formed at the periphery of the through hole 211, on one side of the end cap nut 21. These grooves 212 form an annular ring surrounding the through hole 211 and coaxial with the end cap nut 21. The groove 212 is beneficial to effectively releasing internal stress generated in the injection molding process after the product is molded, and the reduction of the sealing effect of the hemoperfusion apparatus caused by the deformation of the end cap nut 21 is avoided. An internal thread 305 is provided on the inner wall of the end cap nut 21 in order to achieve a threaded connection with the external thread of the cylinder 1.

Referring to fig. 5-6, the end cap body 22 is a circular piece, one end surface of which is provided with a blood nozzle 221, and the other end surface of which is axially provided with an annular bulge 224 around the center of the end cap body 22; the blood nozzle 221 of the end cover body 22 passes through the through hole 211 of the end cover nut 21 to be exposed out of the cylinder body 1, and the annular bulge 224 is positioned in the cylinder body 1. Wherein, the bottom of annular arch 224 meets with the screen frame, and the lateral wall of annular arch 224 meets with the inner wall of barrel 1. That is, the end cap body 22 is fixed between the end cap nut 21 and the adsorption chamber 11. The blood nozzle 221 extends axially outward along the barrel 1 to form a connection tube 222 for connection to an external infusion tube. The radial outer ring of connecting pipe 222 is equipped with fixed pipe 223 around connecting pipe 222, and the inner column wall of fixed pipe 223 is the cylinder chamber, and is equipped with the internal thread on the cylinder chamber inner wall.

Further, a first sealing ring 5 is arranged at the bottom end of the annular protrusion 224, and a second sealing ring is arranged on the side wall of the annular protrusion 224; wherein the first sealing ring 5 and the second sealing ring are both of an i-shaped cross section.

Referring to fig. 7, the hemoperfusion apparatus further comprises a protective cap 3, one end of the protective cap 3 is in an open state, and accordingly, an open port is formed, and a sealing column 31 is arranged at the center of the inner part of the protective cap 3 along the height direction of the protective cap. The outside external screw thread that is equipped with of sealed post 31, be equipped with female screw-thread fit connection on external screw thread and the cylinder chamber inner wall through sealed post 31 promptly for protective cap 3 lock joint is to fixed pipe 223 on, thereby covers blood mouth 221, provides good sealed for blood mouth 221.

Referring to fig. 8, a first sealing groove 225 is formed at the bottom end of the annular protrusion 224, and a second sealing groove 226 is formed on the sidewall of the annular protrusion 224; the first seal groove 225 and the second seal groove 226 are T-shaped grooves, the first seal groove 225 and the second seal groove 226 are perpendicular to each other, the first seal ring 5 is disposed in the first seal groove 225, and the second seal ring is disposed in the second seal groove 226. Set up like this for first sealing washer 5 one end is fixed in first seal groove 225, and will be a T type end cooperation card of I-shaped first sealing washer 5 and go into in the first seal groove 225 of T type, guarantee that first sealing washer 5 is difficult for dropping, and the other end and the filter screen of first sealing washer 5 contact closely under the effect of pressure, and the leakproofness is better. The second sealing ring has the same structure as the first sealing ring 5, and is not described again. In the structure, the first sealing ring 5 is matched with the first sealing groove 225, so that the sealing performance between the adsorption chamber 11 and the blood nozzle 221 is better, and adsorption resin particles are prevented from entering the blood nozzle 221 along the side wall of the filter screen 4; through the mutual matching of the second sealing ring and the second sealing groove 226, the sealing performance between the inside and the outside of the cylinder body 1 is better, namely the sealing effect of the blood perfusion device is improved, the leakage of the perfusion device in the clinical pre-flushing process can be avoided, and the pre-flushing workload of medical institutions is reduced; more importantly, the risk that the blood of a patient is lost and the bacteria invade the blood due to leakage of the perfusion device in the perfusion process can be reduced, a series of complicated operations such as replacing the perfusion device by detaching a pipeline and the like are avoided, and the pain of the patient is reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims

1. The utility model provides a hemoperfusion ware, includes the barrel, be equipped with the adsorption chamber in the barrel, the axial both ends of barrel all are equipped with the opening, just the opening is sealed by detachable end cover device, its characterized in that, end cover device includes:

2. The hemoperfusion apparatus according to claim 1, wherein both ends of the cylinder are provided with filter screens, and the filter screens are located between the blood nozzle and the adsorption chamber; wherein, the filter screen includes the filter screen frame and locates filter screen piece in the filter screen frame, the filter screen frame with the barrel inner wall is connected.

3. The hemoperfusion device according to claim 2, wherein the end cap body is a circular piece, a blood nozzle is arranged on one end face of the end cap body, and an annular bulge around the center of the end cap body is axially arranged on the other end face of the end cap body; the bottom end of the annular bulge is connected with the filter screen frame, and the side wall of the annular bulge is connected with the inner wall of the cylinder.

4. The hemoperfusion apparatus according to claim 3, wherein a first sealing ring is provided at the bottom end of the annular protrusion, and a second sealing ring is provided at the side wall of the annular protrusion; wherein the first and second sealing rings are of an i-shaped cross-section.

5. The hemoperfusion apparatus according to claim 4, wherein a first sealing groove is formed at the bottom end of the annular protrusion, and a second sealing groove is formed in the side wall of the annular protrusion; the first sealing groove and the second sealing groove are T-shaped grooves, the first sealing groove and the second sealing groove are perpendicular to each other, the first sealing ring is arranged in the first sealing groove, and the second sealing ring is arranged in the second sealing groove.

6. The hemoperfusion cartridge of claim 1 wherein said blood spout extends axially outwardly along said barrel to form a connecting tube.

7. The hemoperfusion cartridge of claim 6, wherein the radially outer circumference of the connection tube is provided with a fixed tube around the connection tube, and the inner wall of the fixed tube is provided with internal threads.

8. The hemoperfusion apparatus according to claim 7, further comprising a protective cap, wherein an opening is formed in the middle of the protective cap, and a sealing column for threaded connection with the inner wall of the fixing tube is arranged in the opening.

9. The hemoperfusion cartridge of claim 1 wherein the adsorbent is an adsorbent resin.