GB2200848A
Expired / Lapsed
GB
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Intravenous filter, and apparatus and method for pre-operative preparation thereof
Assignee: MO MED INST PIROGOVA
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Filing: 1987-02-10
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Granted: —
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Expires: 2007-02-10
Abstract
Abstract An intravenous filter comprises a cylindrical holder (1) and a thromboembolus-trapping device in the form of a set of resilient pins (4) secured in the holder. Each pin has an L-shaped grip (5) on its free end. An apparatus for preoperative preparation of the filter comprises an applicator capsule (9) attached to a catheter (11), a guide element (8) comprising conical (20) and a cylindrical (19) portions, a threaded stylet (21) and a collet clamp (17, 18). Preoperative preparation of the filter comprises matching the cylindrical portion of the guide element with the capsule bringing the stylet up through the guide element capsule, catheter and collet, screwing the filter on to the thread, retracting the filter through the guide element into the capsule and removing the guide element. The tightened collet prevents unwanted rotation/unscrewing of the filter. <IMAGE>
Inventors
- 👤 Viktor Sergeevich Saveliev
- 👤 Evgeny Georgievich Yablokov
- 👤 Vladimir Iliich Prokubovsky
- 👤 Stepan Mikhailovich Kolody
- 👤 Sergei Viktorovich Saveliev
- 👤 Ary Alexeevich Smirnov
- 👤 Alexandr Ivanovich Krasnov
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-22 23:06
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/011; A61F2002/016; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0063; A61F2230/0073; A61F2230/0078
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
102 words
An intravenous riiter tor the therapy and/or prevention of thromboembolism of the pulmonary artery, comprising a-cJlindrical holder which carries a thromboembolus-trapping device made with a provision for being rastened in the walls of the inferior vena cava and comprising a set of resiLient pins, one end of each pin being secured in the cylindrical molder so that the resilient pins form a cylindrical surface gradually transforming towards the free ends of the resilient pins into a conical surfacevand the free end of- each resilient pin having an t-shaped grip facing the cylind rical holder outwardly in yin relation to the conical surface.
Claim 2
Dependent Claim
102 words
An intravenous riiter tor the therapy and/or prevention of thromboembolism of the pulmonary artery, comprising a-cJlindrical holder which carries a thromboembolus-trapping device made with a provision for being rastened in the walls of the inferior vena cava and comprising a set of resiLient pins, one end of each pin being secured in the cylindrical molder so that the resilient pins form a cylindrical surface gradually transforming towards the free ends of the resilient pins into a conical surfacevand the free end of- each resilient pin having an t-shaped grip facing the cylind rical holder outwardly in yin relation to the conical surface.
Claim 3
Dependent Claim
23 words
An intravenous filter according to Claim 1, wherein each of the Gshaped grips is turned relative to the axis of tue intravenous filter.
Claim 4
Dependent Claim
16 words
An intravenous filter according to Claim1 or 2, wherein the resilient pins are of different length.
Claim 5
Dependent Claim
62 words
An intravenous filter according to any of
Claims 1 to 3, wherein each ol the resilient pins has a variable cross-section lengtilwise,this cross-section being circular where the pin is secured in the cylindrical holder and flat at the portion adjoining the Shaped grip, the cross-section of the intermediate portion being of the shape whicn joins toge ther the circular and flat forms.
Claim 6
Dependent Claim
26 words
An intravenous rilter according to any of
Claims 1 to 4, wherein theresilient pins and the cylindrical holder are made of the same biologically inert material.
Claim 7
Dependent Claim
57 words
An intravenous filter according to any of
Claims 1 to 5, wherein the number of resilient pins is selected so as to suit the inside diameter of the inferior vena cava and to enable the intravenous filter to trap the smallest permissible thromboembolus dangerous to the life of the patient, said number ranging from 10 to 16.
Claim 8
Independent Claim
103 words
An apparatus for preoperative preparation of the intravenous philter, comprising a guide element having a cylindrical portion and u conical portion and an applicator having a capsule to accommodate the intravenous filter, a catheter connected to the capsule and a stylet accommodated inside the catheter and capsule and having a tread for holding the intravenous rilter, a collet clamp interacting with the stylet, and a guide element interacting with said applicator, said guide element forming a detachable joint with the applicator capsule and having a conical portion and a cylindrical portion which has the same inside diameter and matches with the applicator capsule.
Claim 9
Independent Claim
103 words
An apparatus for preoperative preparation of the intravenous philter, comprising a guide element having a cylindrical portion and u conical portion and an applicator having a capsule to accommodate the intravenous filter, a catheter connected to the capsule and a stylet accommodated inside the catheter and capsule and having a tread for holding the intravenous rilter, a collet clamp interacting with the stylet, and a guide element interacting with said applicator, said guide element forming a detachable joint with the applicator capsule and having a conical portion and a cylindrical portion which has the same inside diameter and matches with the applicator capsule.
Claim 10
Independent Claim
75 words
A method for preoperative preparation of the intravenous rilter comprising the insertion of the stylet through the catheter and capsule, aligning the cylindrical portion of the guide element with the applicator capsule, bringing out the stylet thread through the guide element and screwing the intravenous filter on said thread, inserting the intravenous filter through the conical and cylindrical portions of the guide element into the applicator capsule, and taking the guide element off the capsule.
Claim 11
Independent Claim
75 words
A method for preoperative preparation of the intravenous rilter comprising the insertion of the stylet through the catheter and capsule, aligning the cylindrical portion of the guide element with the applicator capsule, bringing out the stylet thread through the guide element and screwing the intravenous filter on said thread, inserting the intravenous filter through the conical and cylindrical portions of the guide element into the applicator capsule, and taking the guide element off the capsule.
Claim 12
Dependent Claim
33 words
An intravenous filter for the therapy and/or prevention of thromboembolism of the pulmonary artery constructed as described above with reference to, and as shown in, Figs. 1 to 5 of the accompanying drawings.
Claim 13
Dependent Claim
33 words
An intravenous filter for the therapy and/or prevention of thromboembolism of the pulmonary artery constructed as described above with reference to, and as shown in, Figs. 1 to 5 of the accompanying drawings.
Claim 14
Independent Claim
29 words
An apparatus for preoperative preparation of the intravenous filter construoted suåstantiWally as above described with reference to, and as shown in, Figs. 6 and 7 of the acompanying drawings.
Claim 15
Independent Claim
29 words
An apparatus for preoperative preparation of the intravenous filter construoted suåstantiWally as above described with reference to, and as shown in, Figs. 6 and 7 of the acompanying drawings.
Claim 16
Independent Claim
13 words
A method for preoperative preparation of the intravenous filter i1ters*sçantially as hereinbefore described.
Claim 17
Independent Claim
13 words
A method for preoperative preparation of the intravenous filter i1ters*sçantially as hereinbefore described.
References Cited (Backward Citations)
US3952747A
Cited
EP0188927A2
Cited
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