CN204275133U - Locking nut and blood perfusion device - Google Patents
Locking nut and blood perfusion device Download PDFInfo
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- CN204275133U CN204275133U CN201420719890.7U CN201420719890U CN204275133U CN 204275133 U CN204275133 U CN 204275133U CN 201420719890 U CN201420719890 U CN 201420719890U CN 204275133 U CN204275133 U CN 204275133U
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- locking nut
- annular
- perfusion device
- blood perfusion
- end cap
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Abstract
The utility model discloses a kind of locking nut and the blood perfusion device with this locking nut, described locking nut comprises annular sidewall and is formed in the end wall of the axial one end of this annular sidewall, this end wall is provided with the manhole coaxial with annular sidewall, the inner peripheral surface of annular sidewall is provided with female thread, the axial medial surface of end wall is formed with the annular boss for compressing blood perfusion device end cap, this annular boss is around manhole, the annular end face of annular boss is the contact surface of locking nut and blood perfusion device end cap, annular groove is formed between annular boss and the inner peripheral surface of annular sidewall.The locking nut of this utility model blood perfusion device is provided with annular boss, and contacted with blood perfusion device end cap by its annular end face, make locking nut can compress end cap better, be not easy to occur because of seal face systolic pressure not Flat Lid thus cause the problems such as seepage.
Description
Technical field
This utility model relates to blood purification technology field, specifically, relates to a kind of locking nut for blood perfusion device, also relates to a kind of blood perfusion device adopting this locking nut simultaneously.
Background technology
Hemoperfusion is the blood purification technology that rapid of emerging is new clinically in recent years, and treatment category has related to nephropathy, acute poisoning, hepatopathy, critical illness, dermatosis and immune disease etc.As the medical apparatus and instruments being exclusively used in blood purification, the adsorbent purified the blood is placed in blood perfusion device, be arranged on during use in the bloody path of extracorporeal circulation, blood passes through wherein, and target substance is trapped in perfusion device by adsorbent and blood is purified.
Chinese utility model patent CN200820047979 discloses a kind of single use blood perfusion device, and as Fig. 1, the component parts of this perfusion device comprises an adsorption column 7 and the two cover closing devices 8 for sealing the axial two-port of adsorption column 7 respectively.In adsorption column 7 in pipe, various types of adsorbent can be installed according to different therapeutic purposes, such as immunoadsorbent, acticarbon, resin sorbent etc.As Fig. 2 and Fig. 3, often overlap closing device 8 and be made up of filter screen 6, sealing plain cushion 5, end cap 4, locking nut 3 and block 1 etc.Wherein, adsorption column 7, end cap 4, locking nut 3 and block 1 all adopt medical Merlon (PC) to produce with Shooting Technique as raw material; Sealing plain cushion 5 and the sealed bolster 2 be fixed on block 1 all adopt silicone rubber to produce with Shooting Technique as raw material; Filter screen 6 is normally produced with weaving manner as raw material with nylon yarn.
As Fig. 2 and Fig. 3, the adsorption column 7 of perfusion device has the form of cylinder 701, the interior pipe hollow of this cylinder 701, and this hollow space forms the filter chamber 705 for holding granular adsorbent and so on material.A column butt joint ring radially expanded 702,703 is respectively arranged with at the axial both ends of cylinder 701.The outer peripheral face of column butt joint ring 702,703 is respectively arranged with external screw thread 704 outstanding outwardly.Filter screen 6 obtains by fix nylon knitmesh 602 with chemical adhesive, melting or ultra-sonic welded mode in annular framework 601 after.Sealing plain cushion 5 is the annular cushion rubbers adopting silicone rubber to prepare.
As Fig. 2 and Fig. 3, end cap 4 is disk and thin plates 401 that shape corresponds to one of the axial both ends of adsorption column 7.On disk and thin plate 401 sidewall 408 vertically, extend the column circular orientation circle 402 coaxial with disk and thin plate 401.In the radial middle position of disk and thin plate 401, be provided with the blood mouth 403 for blood plasma flowing running through disk and thin plate 401.In the radial outer periphery of blood mouth 403, around a locating dowel 404 coaxial with disk and thin plate 401.The inner cylindrical wall of locating dowel 404 is provided with female thread.
As Fig. 2 and Fig. 3, locking nut 3 is the lids with annular sidewall 303, is used on the end wall 302 of closed corresponding container at it, is provided with runs through end wall 302 and the manhole 304 coaxial with annular sidewall 303 in its radial medium position.At the periphery of manhole 304, there is the groove 301 of several recessed end walls 302 in the axial arranged outside of end wall 302.These grooves 301 are formed around manhole 304 and the annular ring coaxial with annular sidewall 303.Groove 301 is conducive to after formed product, be effectively released in the internal stress produced in injection moulding process, avoids causing locking nut 3 be out of shape and cause perfusion device sealing effect to decline.On the inner peripheral surface of annular sidewall 303, be provided with female thread 305, so that the knob docking between realizing with the external screw thread 704 of aforementioned adsorption column 7.
As shown in Figure 4, in the blood perfusion device of said structure, end wall 302 medial surface 306 contact area for compressing end cap 4 on locking nut 3 is larger, when locking nut 3 shrinks distortion, easily there is seal face systolic pressure not Flat Lid 4, thus cause seepage or local pressure excessive and the angle position of locking nut 3 is ftractureed.
Utility model content
A technical problem to be solved in the utility model is the above-mentioned defect for prior art, provides a kind of locking nut that can compress blood perfusion device end cap better.
Another technical problem to be solved in the utility model is to provide a kind of blood perfusion device with above-mentioned locking nut, can compress blood perfusion device end cap better.
For solving above-mentioned first technical problem, this utility model have employed following technical scheme: design a kind of locking nut for blood perfusion device, comprise annular sidewall and the end wall being formed in the axial one end of this annular sidewall, this end wall is provided with the manhole coaxial with described annular sidewall, the inner peripheral surface of described annular sidewall is provided with female thread, the axial medial surface of described end wall is formed with the annular boss for compressing blood perfusion device end cap, this annular boss is around described manhole, the annular end face of described annular boss is the contact surface of described locking nut and described blood perfusion device end cap, annular groove is formed between the inner peripheral surface of described annular boss and described annular sidewall.
From such scheme, locking nut of the present utility model is provided with annular boss, and contacted with blood perfusion device end cap by its annular end face, make locking nut can compress end cap better, be not easy to occur because of seal face systolic pressure not Flat Lid thus cause the problems such as seepage.
Preferably, the neighboring of described annular end face is rounded edges, to cause fracture when contacting pressing end cap to avoid annular boss due to unbalance stress, forms powder or chip and contaminated blood perfusion device adsorption column is inner.
Preferably, adjoining edge between described annular sidewall and described end wall is rounded edges, such as be arranged to the R angle of 7 fonts, to increase the intensity of locking nut, reduce the risk that cracking occurs locking nut, thus avoid locking nut to damage and affect blood perfusion device internal medium or increase product bad product rate.
Further, described locking nut also comprise described annular sidewall surrounded the inner chamber that formed is connected with locking nut outside osculum, thus inner chamber annular sidewall being surrounded formation is connected with the outside of locking nut.Blood perfusion device in process of production, need to clean locking nut and end cap, after blood perfusion device assembling, the inner chamber formed between end cap and nut annular sidewall and end wall easily remains moisture, and when blood perfusion device carries out radiation sterilization, temperature raises, residue in the steam volatilization between nut and end cap, by arranging described osculum, can discharge from osculum in time during steam volatilization, thus avoid end cap and locking nut affects product quality because of stress deformation.
Preferably, described osculum is arranged on described end wall.
Wherein, described osculum can arrange one, also can arrange multiple.
Further, the axial lateral surface of described end wall is provided with several grooves arranged around described manhole, described osculum is communicated with described annular groove and described groove.
Preferably, the U-shaped profile of described annular groove, is beneficial to process the demoulding.
For solving above-mentioned second technical problem, this utility model have employed following technical scheme: design a kind of blood perfusion device, comprise adsorption column and seal the closing device of the axial two-port of this adsorption column respectively, there is in described adsorption column the adsorption chamber holding adsorbent, described closing device comprises end cap, locking nut, filter screen and sealing gasket, described end cap is fixed on the end of described adsorption column by described locking nut, described filter screen and sealing gasket are located between described end cap and described adsorption column end, described locking nut comprises annular sidewall and is formed in the end wall of the axial one end of this annular sidewall, this end wall is provided with the manhole coaxial with described annular sidewall, the inner peripheral surface of described annular sidewall is provided with female thread, the axial medial surface of described end wall is formed with the annular boss for compressing blood perfusion device end cap, this annular boss is around described manhole, the annular end face of described annular boss is the contact surface of described locking nut and described blood perfusion device end cap, annular groove is formed between the inner peripheral surface of described annular boss and described annular sidewall.
From such scheme, the locking nut of this utility model blood perfusion device is provided with annular boss, and contacted with blood perfusion device end cap by its annular end face, make locking nut can compress end cap better, be not easy to occur because of seal face systolic pressure not Flat Lid thus cause the problems such as seepage.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of existing a kind of blood perfusion device.
Fig. 2 is the STRUCTURE DECOMPOSITION axonometric chart one of blood perfusion device shown in Fig. 1.
Fig. 3 is the STRUCTURE DECOMPOSITION axonometric chart two of blood perfusion device shown in Fig. 1.
Fig. 4 is the sectional view of the locking nut in the middle of blood perfusion device shown in Fig. 1.
Fig. 5 is the sectional view of the locking nut in the middle of a kind of blood perfusion device of the present utility model.
Detailed description of the invention
To describe various embodiment of the present utility model below in detail, embodiment wherein in conjunction with the accompanying drawings and describe hereinafter.Although this utility model will be described in conjunction with illustrative embodiments, be to be understood that this utility model is not limited to these illustrative embodiments.On the contrary, this utility model not only comprises these embodiments, but also comprises various distortion, improvement.
Blood perfusion device shown in blood perfusion device of the present utility model and Fig. 1 to Fig. 3 substantially similar, include adsorption column and seal the closing device of the axial two-port of this adsorption column respectively, there is in adsorption column the adsorption chamber holding adsorbent, closing device comprises end cap, locking nut 10, filter screen and sealing gasket, end cap is fixed on the end of described adsorption column by locking nut 10, and filter screen and sealing gasket are located between end cap and adsorption column end.
Fig. 5 shows the locking nut 10 in the middle of this utility model blood perfusion device, it end wall 12 comprising annular sidewall 11 and be formed in this axial one end of annular sidewall 11, this end wall 12 is provided with the manhole 13 coaxial with annular sidewall 11, the inner peripheral surface of annular sidewall 11 is provided with female thread 14, so that the knob docking between the external screw thread realizing same blood perfusion device adsorption column.The axial medial surface of end wall 12 is formed with annular boss 15, to compress blood perfusion device end cap (end cap 4 as shown in Figure 2 or Figure 3) better, this annular boss 15 is around manhole 13, the annular end face 16 of this annular boss 15 is as the contact surface of locking nut 10 with blood perfusion device end cap, annular groove 18 is formed between the inner peripheral surface 17 of annular boss 15 and annular sidewall 11, the U-shaped profile of this annular groove 18, is beneficial to process the demoulding.The neighboring 23 of annular end face 16 is designed to rounded edges, when contacting pressing end cap to avoid annular boss 15, because stress is concentrated, unbalance stress causes fracture, form powder or chip, avoid annular boss 15 to scratch end cap upper surface simultaneously, affect attractive in appearance.
The axial lateral surface 19 of described end wall 12 is provided with several grooves 20 arranged around manhole 13, groove 20 is conducive to effectively being released in the internal stress produced in injection moulding process after locking nut 10 formed product, avoids causing locking nut 10 be out of shape and cause perfusion device sealing property to decline.Adjoining edge 24 between annular sidewall 11 and end wall 12 is rounded edges, such as be arranged to the R angle of 7 fonts, to increase the intensity of locking nut 10, reduce the risk that cracking occurs locking nut 10, thus avoid locking nut 10 to damage and affect blood perfusion device internal medium or increase product bad product rate.
Described end wall 12 is provided with the osculum 22 of one or more connection annular groove 18 and groove 20, thus the inner chamber 21 annular sidewall 11 being surrounded formation is connected with the outside of locking nut 10.Blood perfusion device in process of production, need to clean locking nut 10 and end cap, after blood perfusion device assembling, the inner chamber formed between end cap and nut annular sidewall 11 and end wall 12 easily remains moisture, when blood perfusion device carries out radiation sterilization, temperature raises, the steam residued between nut 10 and end cap volatilizees, but because the contact sealing between end cap and nut annular sidewall 11 and end wall 12 is relatively good, if do not arrange osculum, along with steam volatilization, pressure between locking nut 10 and end cap increases, locking nut 10 and end cap is easily caused to deform or damage, sealing property is caused to be deteriorated, or cause other quality problems.This utility model, by arranging described osculum 22, can be discharged during the volatilization of steam between locking nut 10 and end cap in time from osculum 22, thus avoids end cap and locking nut 10 affects product quality because of stress deformation.Described osculum 22 also can be arranged on annular sidewall 11.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the present utility model design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (9)
1. for the locking nut of blood perfusion device, comprise annular sidewall and the end wall being formed in the axial one end of this annular sidewall, this end wall is provided with the manhole coaxial with described annular sidewall, the inner peripheral surface of described annular sidewall is provided with female thread, it is characterized in that: the axial medial surface of described end wall is formed with the annular boss for compressing blood perfusion device end cap, this annular boss is around described manhole, the annular end face of described annular boss is the contact surface of described locking nut and described blood perfusion device end cap, annular groove is formed between the inner peripheral surface of described annular boss and described annular sidewall.
2. locking nut according to claim 1, is characterized in that: the neighboring of described annular end face is rounded edges.
3. locking nut according to claim 1, is characterized in that: the adjoining edge between described annular sidewall and described end wall is rounded edges.
4. the locking nut according to any one of claims 1 to 3, is characterized in that: also comprise described annular sidewall surrounded the inner chamber that formed and described locking nut outside be connected osculum.
5. locking nut according to claim 4, is characterized in that: described osculum is arranged on described end wall.
6. locking nut according to claim 4, is characterized in that: described osculum has one or more.
7. locking nut according to claim 4, is characterized in that: the axial lateral surface of described end wall is provided with several grooves arranged around described manhole, and described osculum is communicated with described annular groove and described groove.
8. locking nut according to claim 7, is characterized in that: the U-shaped profile of described annular groove.
9. blood perfusion device, comprise adsorption column and seal the closing device of the axial two-port of this adsorption column respectively, there is in described adsorption column the adsorption chamber holding adsorbent, described closing device comprises end cap, locking nut, filter screen and sealing gasket, described end cap is fixed on the end of described adsorption column by described locking nut, described filter screen and sealing gasket are located between described end cap and described adsorption column end, it is characterized in that, described locking nut is the locking nut according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719890.7U CN204275133U (en) | 2014-11-25 | 2014-11-25 | Locking nut and blood perfusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719890.7U CN204275133U (en) | 2014-11-25 | 2014-11-25 | Locking nut and blood perfusion device |
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| CN204275133U true CN204275133U (en) | 2015-04-22 |
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| CN201420719890.7U Active CN204275133U (en) | 2014-11-25 | 2014-11-25 | Locking nut and blood perfusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251074A (en) * | 2015-11-06 | 2016-01-20 | 珠海健帆生物科技股份有限公司 | Blood purifier |
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2014
- 2014-11-25 CN CN201420719890.7U patent/CN204275133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251074A (en) * | 2015-11-06 | 2016-01-20 | 珠海健帆生物科技股份有限公司 | Blood purifier |
| CN105251074B (en) * | 2015-11-06 | 2018-06-29 | 珠海健帆生物科技股份有限公司 | Blood purification |
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Address after: 519080 Zhuhai hi tech Zone No. six road, Guangdong Province, 98 Patentee after: Jianfan Biotechnology Group Co., Ltd. Address before: 519080 Zhuhai hi tech Zone No. six road, Guangdong Province, 98 Patentee before: Jafron Biomedical Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |