CN111317668A

CN111317668A - Integral hemodialysis bung

Info

Publication number: CN111317668A
Application number: CN202010202051.8A
Authority: CN
Inventors: 危金兰
Original assignee: Jiangshan Xianjin Electromechanical Technology Service Co Ltd
Current assignee: Jiangshan Xianjin Electromechanical Technology Service Co Ltd
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2020-06-23
Also published as: CN105362072B; CN105362072A

Abstract

The invention relates to the technical field of hemodialysis equipment. An integral hemodialysis barrel cover comprises a cover body, wherein the cover body comprises a top wall and a cylindrical side wall, the top wall comprises a fixing portion and an opening portion, the fixing portion is connected with the side wall, the opening portion is connected with the fixing portion in a sealing mode through a tearing line arranged on the inner surface of the top wall, the portion, corresponding to the tearing line, of the outer surface of the top wall is a convex surface, the fixing portion, the opening portion and the tearing line are connected together in an integrated structure mode, a connecting block is arranged at one end of the opening portion, and the connecting block is connected with a pull ring which can stand relative to the opening portion by taking the connecting block as a fulcrum and is in a flat state. The invention provides an integral hemodialysis barrel cover with a convenient opening cover and a good compression-resistant effect, and solves the problem that the existing integral hemodialysis barrel cover with an inlet and an outlet is inconvenient to open the opening cover.

Description

Integral hemodialysis bung

The present application is a divisional application of application No. 2015107021183, filed 2015, 10, 27, entitled "integral hemodialysis cartridge cover".

Technical Field

The invention relates to the technical field of hemodialysis equipment, in particular to an integral hemodialysis barrel cover.

Background

Hemodialysis is one of the kidney replacement treatment modes of patients with acute and chronic renal failure. The blood and electrolyte solution (dialysate) with similar concentration of organism are arranged inside and outside one hollow fiber by draining the blood in vivo to the outside of the body through a dialyzer consisting of a plurality of hollow fibers, and the material exchange is carried out by dispersion/convection, thereby removing the metabolic waste in the body and maintaining the balance of electrolyte and acid-base; at the same time, the excess water in the body is removed, and the whole process of purified blood reinfusion is called hemodialysis. During hemodialysis, concentrated solution needs to be delivered to a hemodialysis machine. The concentrate is stored in a hemodialysis cartridge for delivery. A conventional hemodialysis cartridge is disclosed in a patent document entitled "a hemodialysis concentrate cartridge" with chinese patent No. 201420778811x and granted announcement date of 29/4/2015. The hemodialysis bucket in this patent document includes bucket and the bung that covers on the bucket, through opening the bung during use, then with hemodialysis machine's concentrate input tube through the bung hole input to the hemodialysis bucket in and through pump connection in the input tube realize the output, and leave the space so that the concentrate can be exported in the confession air admission between the bung hole and the concentrate input tube of hemodialysis machine.

The existing hemodialysis concentrated solution barrel has the following defects: during the use process, dust enters the concentrated solution through the barrel opening to cause the concentrated solution to be polluted and affect the health; the concentrated solution is easy to be polluted after long-term exposure; the barrel body has the risk of cross contamination when being reused; air bubbles present in the concentrate during delivery may be generated and may migrate into the patient causing an embolism. Therefore, the barrel cover with the access hole is designed, and the access hole on the existing barrel cover with the access hole is still covered by the cover which is connected in a plugging way or in a rotating way, so that the existing barrel cover still has the defect of inconvenient opening of the hole cover.

Disclosure of Invention

The invention provides an integral hemodialysis barrel cover with a convenient opening cover and a good compression-resistant effect, and solves the problem that the existing integral hemodialysis barrel cover with an inlet and an outlet is inconvenient to open the opening cover.

The technical problem is solved by the following technical scheme: an integral hemodialysis barrel cover comprises a cover body, wherein the cover body comprises a top wall and a cylindrical side wall, the top wall comprises a fixing portion and an opening portion, the fixing portion is connected with the side wall, the opening portion is connected with the fixing portion in a sealing mode through a tearing line arranged on the inner surface of the top wall, the portion, corresponding to the tearing line, of the outer surface of the top wall is a convex surface, the fixing portion, the opening portion and the tearing line are connected together in an integrated structure mode, a connecting block is arranged at one end of the opening portion, and the connecting block is connected with a pull ring which can stand relative to the opening portion by taking the connecting block as a fulcrum and is in a flat state. When the tube is inserted into the hemodialysis barrel, the pull ring is erected to a required angle relative to the top wall by taking the connecting block as a fulcrum, then the opening part is pulled by the pull ring to tear the tear line so as to separate the opening part from the fixing part, an access hole is formed at the position of the top wall corresponding to the opening part, and the tube is inserted into the hemodialysis barrel through the access hole. The opening part of the access hole cover is connected with the fixing part in an integrated structure, namely the opening part and the fixing part are manufactured together, so that the access hole cover is convenient to manufacture and has good sealing performance. Can be opened by pulling and is provided with a pull ring, so the opening is convenient. Tear line department not only is difficult to laying dust so as to keep the clean nature of roof surface to thereby be difficult to lead to the production of pollution when making open the opening portion, the epirelief design can improve the compressive capacity of opening portion moreover, play and prevent to store in-process opening portion and receive the probability that extrudees downwards and be opened.

Preferably, the tear line is a groove formed by recessing an inner surface of the top wall. The tearing can be reliably performed along the tearing line when the opening part is opened. The connecting strength of the tearing part can be reduced by pressing the opening part downwards during opening, so that the force required during opening is reduced, and the phenomenon that the connecting part of the pull ring and the connecting block is broken in the opening process to cause incapability of opening through the pull ring is not easily caused due to the reduction of the opening force.

Preferably, the groove constituting the tear line is a sharp-bottomed groove. The effect of reducing the connection strength at the tear by pressing down the opening portion can be further improved.

Preferably, a prying gap is formed between the pull ring and the top wall. The pressing down of the opening part to reduce the strength of the tear line can be achieved by pressing down the tab.

Preferably, the lower end face of the pull ring is provided with a first cutting edge, and a cutting edge line of the first cutting edge is positioned right above the tearing line. The first cutting edge can produce the downcut effect to the tear line through the in-process that the pull ring is pushed down and realize pushing down to opening the portion for the intensity decline range of tear line is bigger, thereby can open opening the portion more laborsavingly.

Preferably, the tearing line is provided with an initial tearing section, the connecting block is of an elastic structure, an air cavity is arranged in the connecting block, and the air cavity is provided with an air outlet blowing air towards the initial tearing section. The "initial tear portion" refers to a portion where the tear line is first torn during opening of the opening portion by the tab, which is located beside the joint block. Before opening, press the pull ring from top to bottom and squeeze the opening part to reduce the tearing strength of the tearing line, the air cavity generates an outward blowing action to blow away the initial tearing section and dirt such as dust at the periphery of the initial tearing section, so that the pollution caused by the dirt falling into the barrel in the opening process is avoided. In the tearing process, the tearing line may generate a pressing action towards the inside of the barrel at the initial tearing section and generate a large vibration at the moment of being torn, and if dust exists at the initial tearing section and the periphery of the initial tearing section, the dust enters the barrel.

Preferably, the air outlet is provided with a sealing film, the connecting block is provided with a cutter holder which rotates along with the pull ring, and the cutter holder is provided with a second cutting edge which rotates along with the pull ring to puncture the sealing film when the pull ring is erected by rotation; the second cutting edge punctures the sealing film earlier than the tearing line breaks during the process of turning to erect the pull ring. The design seal membrane can prevent to deposit in-process dust and get into the air cavity, if have in the air cavity then blow off the gas in just contain the dust, can lead to being difficult to will initiate when blowing to tear the section and blow totally. Set up the second blade, convenience when can improve and open the seal membrane.

Preferably, the knife holder is further provided with a third cutting edge which rotates along with the pull ring to puncture the tearing line when the pull ring is erected by rotating; the second cutting edge pierces the sealing film earlier than the third cutting edge pierces the tear line during rotation to erect the tab. In the opening process, the tearing line can be punctured or punctured through the third cutting edge, so that the tearing line can be torn by pulling the pull ring with small force.

Preferably, the air pressure in the air chamber is 1.5 standard atmospheres or more. After the pull ring is rotated to puncture the sealing membrane, the air cavity can be blown out to clean the initial tearing section without additionally extruding the connecting block to deform the air cavity. The convenience is good when in use.

Preferably, the sidewall includes a metal core layer and a rubber layer included outside the metal core layer. Can guarantee the intensity, have can be in the same place with bottle sealing connection through the mode of close fit.

Preferably, the pull ring is fixedly connected with a hinge shaft, the pull ring is hinged with the connecting block through the hinge shaft, and the cutter holder is fixedly connected with the hinge shaft. The reliability of the tool apron in rotation driven by the pull ring can be improved.

The invention has the following advantages: the sealing performance is good; the opening is convenient; dust is not easy to accumulate at the tearing line; the opening part is not easy to be separated from the fixing part when being extruded.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 4 is an enlarged partial schematic view at A of FIG. 3;

fig. 5 is a partial schematic view of a fourth embodiment of the invention.

In the figure: the cap comprises a cap body 1, a top wall 11, a fixing part 111, an opening part 112, a side wall 12, a tearing line 13, a prying gap 14, a part 15 of the outer surface of the top wall corresponding to the tearing line, a connecting block 2, an air cavity 21, an air outlet 211, a tool apron 22, a second cutting edge 221, a third cutting edge 222, a sealing film 23, a pull ring 3, a first cutting edge 31 and a hinge shaft 32.

The invention is further described with reference to the following figures and examples.

First embodiment, referring to fig. 1, an integrated hemodialysis cartridge cover includes a cap body 1. The cap body 1 includes a top wall 11 and a cylindrical side wall 12. The side wall 12 includes a metal core layer 121 and a rubber layer 122 included outside the metal core layer. The top wall 11 includes a fixing portion 111 and an opening portion 112. The fixing portion 111 is connected to the sidewall 12. The wall thickness of the opening portion 112 is smaller than that of the fixing portion 111. The opening portion 112 is connected to the fixing portion 111 by the tear line 13. The fixing portion 111, the opening portion 112 and the tear line 13 are connected together in an integrated structure. The tear line 13 is provided on the inner surface of the top wall 11. The outer surface of the top wall is convex at the location 15 corresponding to the tear line. The tear line 13 is formed by a groove formed by recessing the inner surface of the top wall 11, and the groove constituting the tear line 13 is a sharp-bottomed groove. One end of the opening part 112 is provided with a connection block 2. The connecting block 2 is coupled to the opening portion 112 by welding or an integral structure. The connecting block 2 is connected with a pull ring 3 in a flat state. The connecting block is connected to the opening portion so as to be able to stand up with respect to the opening portion with the connecting block as a fulcrum. A prying gap 14 is arranged between the pull ring 3 and the top wall 11. The lower end surface of the pull ring 3 is provided with a first cutting edge 31. The edge line of the first cutting edge 31 is located right above the tear line 13, i.e. when the tab 13 is pressed down, the first cutting edge 31 can cut the tear line 13.

When the tube is inserted into the hemodialysis barrel, the right end of the pull ring 3, namely one end far away from the connecting block 2, is pressed downwards to enable the first cutting edge 31 to generate an undercut action on the tear line 13 to destroy the strength of the tear line 13, then the pull ring 3 is rotated anticlockwise by taking the connecting block 2 as a fulcrum until the pull ring stands up to a required angle relative to the top wall 11, the pull ring 3 is pulled to pull the opening part 112 upwards to enable the tear line 13 to be torn to separate the opening part 112 from the fixing part 111, at the moment, an access hole is formed at the part of the top wall 11 corresponding to the opening part, and the tube is inserted into the hemodialysis barrel through the access hole.

The second embodiment is different from the first embodiment in that:

referring to fig. 2, the joint block 2 is of an elastic structure. An air cavity 21 is arranged in the connecting block 2. The air chamber 21 is provided with an air outlet 211 for blowing air towards the initial tearing section of the tear line 13.

When the opening part 112 is opened, the connecting block 2 is repeatedly pressed, so that the first cutting edge 31 cuts the tear line 13 downward, and simultaneously, the gas in the gas cavity 21 is blown out through the gas outlet 211 to clean the initial tear section of the tear line 13.

The third embodiment is different from the second embodiment in that:

referring to fig. 3, the connecting block 2 is also connected with a tool holder 22. The air outlet 211 is provided with a sealing film 23, i.e. the air outlet is closed. The air chamber 21 is filled with inert gas or nitrogen. The air pressure in the air chamber 21 is 1.5 standard atmospheres or more.

Referring to fig. 4, the tool holder 22 is provided with a second cutting edge 221 and a third cutting edge 222.

In the using process, when the pull ring 3 is rotated to erect the pull ring 3, the connecting block 2 is deformed and rotated, when the connecting block 2 is rotated, the cutter holder 22 is also rotated counterclockwise, and the cutter holder 22 drives the second cutting edge 221 and the third cutting edge 222 to rotate together. During the rotation process, the second cutting edge 221 firstly punctures the sealing film 23, so that the gas in the gas cavity 21 is released to clean the initial tearing section of the tearing line 13, then the third cutting edge 222 punctures or punctures the initial tearing section of the tearing line 13, and the opening part 112 is completely torn by the pull ring 3 to be removed.

The fourth embodiment is different from the third embodiment in that:

referring to fig. 5, the pull ring 3 is fixed with a hinge shaft 32. The pull ring 3 is hinged with the connecting block 2 through a hinge shaft 32. The holder 22 is fixed to the hinge shaft 32.

Claims

1. An integral hemodialysis barrel cover comprises a cover body, the cover body comprises a top wall and a cylindrical side wall, and is characterized in that the top wall comprises a fixing part and an opening part, the fixing part is connected with the side wall, the opening part is hermetically connected with the fixing part through a tearing line arranged on the inner surface of the top wall, the part of the outer surface of the top wall corresponding to the tearing line is a convex surface, the fixing part, the opening part and the tearing line are connected together in an integrated structure mode, one end of the opening part is provided with a connecting block, the connecting block is connected with a pull ring which can stand relative to the opening part by taking the connecting block as a fulcrum and is in a flat state, the tearing line is provided with an initial tearing section, the connecting block is in an elastic structure, an air cavity is arranged in the connecting block, and the air cavity is provided with an air outlet blowing air, the air outlet is provided with a sealing film, the connecting block is provided with a cutter holder which rotates along with the pull ring, and the cutter holder is provided with a second cutting edge which rotates along with the pull ring to puncture the sealing film when the pull ring is erected; in the process of rotating and erecting the pull ring, the moment when the second cutting edge punctures the sealing membrane is earlier than the moment when the tearing line is broken, the pull ring is fixedly connected with a hinge shaft, the pull ring is hinged with the connecting block through the hinge shaft, and the cutter holder is fixedly connected with the hinge shaft.

2. The unitary hemodialysis cartridge cover of claim 1, wherein the tear line is formed by a groove recessed from an inner surface of the top wall.

3. The integrated hemodialysis cartridge cover of claim 2, wherein the groove constituting the tear line is a sharp-bottomed groove.

4. The integrated hemodialysis cartridge cover of claim 1, 2 or 3, wherein a prying gap is provided between the pull ring and the top wall.

5. The integrated hemodialysis barrel cover of claim 4, wherein the lower end surface of the pull ring is provided with a first cutting edge, and a cutting edge line of the first cutting edge is positioned right above the tearing line.

6. The cover for integral hemodialysis barrel according to claim 1, 2 or 3, wherein the knife holder further comprises a third cutting edge rotating along with the pull ring to puncture the tear line when the pull ring is rotated to erect the pull ring; the second cutting edge pierces the sealing film earlier than the third cutting edge pierces the tear line during rotation to erect the tab.

7. The integrated hemodialysis cartridge cover of claim 1, 2 or 3, wherein the air pressure in the air chamber is 1.5 atm or more.

8. The integrated hemodialysis cartridge cover of claim 1, 2 or 3, wherein the sidewall comprises a metal core layer and a rubber layer included outside the metal core layer.