CN109363809B - Adjusting device of filament control type medical instrument - Google Patents
Adjusting device of filament control type medical instrument Download PDFInfo
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- CN109363809B CN109363809B CN201811395131.9A CN201811395131A CN109363809B CN 109363809 B CN109363809 B CN 109363809B CN 201811395131 A CN201811395131 A CN 201811395131A CN 109363809 B CN109363809 B CN 109363809B
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- central hole
- screw
- pusher
- hole
- medical instrument
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides an adjusting device of a filament control type medical instrument, which comprises a long tube, a spiral device and a pusher, wherein the long tube is provided with a long hole; the right end of the long pipe is provided with a fixed head which is provided with a first central hole; the pusher is provided with a connector and a rotating handle, and the connector is rotationally connected with the left end of the long tube; the pusher is provided with a second central hole; the screw device comprises a screw rod, the end part of the right end of the screw rod penetrates into the long pipe from the second central hole and is provided with a sliding piston, and the end part of the left end of the screw rod is positioned outside the pusher; the inner wall of the second central hole is provided with a first thread which is screwed with the screw rod; the screw device is provided with a third central hole; the outer wall of the end part of the left end of the screw rod is provided with a fixing hole which is screwed with a fixing screw; the first center hole, the second center hole and the third center hole are coaxially arranged. The invention is matched with a thread control medical instrument for use, and can randomly adjust the stepping or withdrawing distance of the thread control medical instrument or adjust the diameter of the instrument through controlling the thread, thereby realizing the operation of the instrument at a random bent vascular lesion position.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an adjusting device of a filament control type medical instrument.
Background
In recent years, the number of patients with stenosis or embolism in cardiac vessels, cerebral vessels, and peripheral vessels has been increasing. Stenosis or embolism of blood vessels seriously affects life and work of people, and even threatens life when serious. At present, products such as a mesh stent and the like are mainly applied to treat vascular stenosis or embolism diseases in clinic. Before using, the mesh-shaped stent and the delivery system thereof are all required to be preset with a filament in a blood vessel, and then the mesh-shaped stent and the delivery system thereof are sleeved on the filament and advance from the outside to the part of the blood vessel stenosis or embolism along a filament track along the inner cavity of the blood vessel. After the treatment is completed, the mesh stent and the delivery system thereof are withdrawn to the outside of the body along the filament track. The mesh stent has a small diameter when it is advanced or withdrawn along the filament track to facilitate its removal, but when treating stenosis or embolism, the mesh stent needs to be enlarged in diameter to compress the wall of the vessel lumen. The accuracy of the advancing or withdrawing position along the filament track and the controllability of the diameter enlargement are one of the keys to the success of the treatment and even to the prognosis of the patient.
The prior mesh stent and the delivery system thereof in the market are pushed and pulled to adjust by the force of the operator by hand feeling when the mesh stent advances or retracts along the filament. The mode of adjusting by the hand feeling of the operator is influenced by various uncertain factors such as individual difference of the operator, operation state of the operator and uncontrollable force application, and the position matching of the mesh-shaped support and the position of a lesion is often not accurate enough. The mesh stents and their delivery systems currently available in the market generally use an external pressurizing device to pressurize the delivery system of the mesh stent, indirectly enlarge the diameter of the mesh stent, or utilize the shape memory of the mesh stent to enlarge the diameter. The former method of enlarging the diameter of the net-shaped bracket is an indirect effect and is greatly influenced by a pressurizing device and a conveying system; the latter method of expanding the diameter of the mesh stent is a passive action, can be adapted to a predetermined diameter only by using shape memory ability, and cannot be adjusted according to the disease condition. Therefore, the mesh-shaped stent and the conveying system thereof on the market at present have poor effects on the accuracy of the position when the mesh-shaped stent advances or retracts along the filament track and the controllability of the diameter expansion.
Therefore, designing an adjusting device of a filament control type medical instrument, realizing the forward or backward movement of the filament regulated by using the adjusting device, and efficiently, accurately and freely moving the position of the instrument or adjusting the diameter of the instrument becomes a problem to be solved urgently in the industry.
Disclosure of Invention
The invention provides an adjusting device of a filament control type medical instrument, which solves the problem that the position accuracy and diameter enlarging controllability of the filament control type medical instrument in advancing or withdrawing along a filament track are poor in the prior art.
The technical scheme of the invention is realized as follows:
an adjusting device of a filament control medical instrument comprises a long tube, a spiral device and a pusher;
the long pipe is a hollow pipe body, the left end of the long pipe is an open end, the right end of the long pipe is provided with a fixed head, the fixed head is provided with a horizontal first central hole, and the first central hole penetrates through the fixed head and is communicated with the inside of the long pipe;
the pusher is provided with a connector and a rotating handle connected with the connector, and the connector is rotationally connected with the left end of the long pipe; the pusher is provided with a horizontal second central hole which penetrates through the pusher and is communicated with the inside of the long pipe;
the screw device comprises a screw rod, the right end part of the screw rod penetrates into the long pipe from the second central hole, and a sliding piston capable of sliding in the long pipe in a reciprocating manner is arranged at the right end part of the screw rod; the left end part of the lead screw is positioned on the outer side of the pusher; a first thread is arranged on the inner wall of the second center hole and is screwed with the lead screw;
the screw has a horizontal third central bore through the screw; a fixing hole is formed in the outer wall of the end part of the left end of the lead screw and communicated with the third central hole; a fixing screw is screwed in the fixing hole;
the first center hole, the second center hole and the third center hole are coaxially arranged.
Further, the screw pitch of the lead screw is 0.01mm-3.50 mm.
Further, the diameters of the first central hole and the third central hole are both 0.1mm-5 mm.
Further, the long tube is made of one or more of plastic, metal and polymer.
Further, a second thread or a buckle is arranged on the fixing head.
The invention has the beneficial effects that:
the invention has simple structure and convenient use: the device is matched with a filament control type medical instrument for use, the stepping or withdrawing distance of the filament control type medical instrument can be adjusted randomly or the diameter of the device can be adjusted through controlling the filaments, the device work under the position of the vascular lesion can be bent randomly, a more accurate and convenient operation basis is provided for an operator, the treatment means of the operator is increased, an accurate and rapid operation process is provided for vascular disease patients, and the pain of the patients in the operation process is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Wherein:
1. a long tube; 2. a fixed head; 3. a second thread; 4. a first central aperture; 5. a connector; 6. a rotation handle; 7. a second central aperture; 8. a lead screw; 9. a sliding piston; 10. a third central aperture; 11. a fixing hole; 12. and fixing the screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the adjusting device of the filament control type medical device in the present embodiment includes a long tube 1, a spiral device and a pusher.
The long tube 1 is a hollow tube body, the left end of the long tube 1 is an open end, in this embodiment, the long tube 1 is a cylindrical polycarbonate long tube, in practical application, in order to meet the holding requirements of an operator, the shape of the long tube 1 can be designed into a shape more suitable for holding, and the long tube 1 can be made of one or more materials selected from plastic, metal and polymer.
A fixing head 2 for connecting with a filament control medical instrument is arranged at the right end of the long tube 1, and in the embodiment, a second thread 3 is arranged on the fixing head 2 and used for fixing with the filament control medical instrument; in practical application, the fixing head 2 can be provided with a buckle for fixing with a filament control type medical instrument, and specific setting can be carried out according to requirements. The fixed head 2 has a horizontal first central hole 4, and the first central hole 4 penetrates through the fixed head 2 and communicates with the inside of the elongated tube 1.
The pusher is provided with a connector 5 and a rotating handle 6 connected with the connector 5, and the connector 5 is rotatably connected with the left end of the long tube 1; the pusher is provided with a horizontal second central hole 7, and the second central hole 7 penetrates through the pusher and is communicated with the inside of the long pipe 1.
The screw device comprises a screw rod 8, in the embodiment, the screw pitch of the screw rod 8 is 2mm, and in actual use, the screw pitch of the screw rod 8 can be set to be 0.01mm-3.50mm according to requirements. The right end part of the screw rod 8 penetrates into the long pipe 1 through the second central hole 7, and the right end part of the screw rod 8 is provided with a sliding piston 9 capable of sliding in the long pipe 1 in a reciprocating manner; the left end part of the lead screw 8 is positioned on the outer side of the pusher; and a first thread is arranged on the inner wall of the second central hole 7 and is screwed with the screw rod 8.
The screw has a horizontal third central bore 10, said third central bore 10 passing through the screw; a fixing hole 11 is formed in the outer wall of the end part of the left end of the lead screw 8, and the fixing hole 11 is communicated with the third central hole 10; a fixing screw 12 is screwed in the fixing hole 11, and the fixing screw 12 is used for fastening the filament.
The first central hole 4, the second central hole 7 and the third central hole 10 are coaxially arranged, so that the penetration of a filament and the rotating matching of all parts are facilitated. In this embodiment, the diameters of the first central hole 4 and the third central hole 10 are both 2mm, and in practical application, the diameters of the first central hole 4 and the third central hole 10 may be set to 0.1mm to 5mm according to requirements.
When the fixing head 2 is used, the fixing head is connected with a filament control type medical device, a filament of the filament control type medical device penetrates from the right end to the left end of the fixing head through the first center hole 4 and the third center hole 10, the fixing screw 12 is screwed downwards, and the filament is tightly pressed on the inner wall of the second center hole 7, so that the filament is fixed. When adjusting filament control type medical instrument, rotatory rotation handle 6, make the pusher rotate, and the pusher is screwed with lead screw 8, then lead screw 8 can realize the removal left or right along second centre bore 7, and then realize the regulation to the tensile length of filament, and the other end of filament is connected with filament control type medical instrument, consequently can adjust the step-by-step or the back withdrawal distance of filament control type medical instrument, or the diameter of adjusting device, realize the instrument work under the arbitrary crooked vascular pathological change position, provide more accurate convenient operation basis for the art person, the treatment means of art person has been increased, provide accurate swift operation process for the vascular disease patient, reduce the misery in the patient art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An adjusting device of a filament control medical instrument is characterized by comprising a long tube, a spiral device and a pusher;
the long pipe is a hollow pipe body, the left end of the long pipe is an open end, the right end of the long pipe is provided with a fixed head, the fixed head is provided with a horizontal first central hole, and the first central hole penetrates through the fixed head and is communicated with the inside of the long pipe;
the pusher is provided with a connector and a rotating handle connected with the connector, and the connector is rotationally connected with the left end of the long pipe; the pusher is provided with a horizontal second central hole which penetrates through the pusher and is communicated with the inside of the long pipe;
the screw device comprises a screw rod, the right end part of the screw rod penetrates into the long pipe from the second central hole, and a sliding piston capable of sliding in the long pipe in a reciprocating manner is arranged at the right end part of the screw rod; the left end part of the lead screw is positioned on the outer side of the pusher; a first thread is arranged on the inner wall of the second center hole and is screwed with the lead screw;
the screw has a horizontal third central bore through the screw;
a fixing hole is formed in the outer wall of the end part of the left end of the lead screw and communicated with the third central hole;
a fixing screw is screwed in the fixing hole;
the first central hole, the second central hole and the third central hole are coaxially arranged;
the fixing head is fixed with the filament control medical instrument.
2. The adjustment device of a filament control-type medical instrument according to claim 1, wherein the pitch of the lead screw is 0.0lmm-3.50 mm.
3. The adjustment device of a filament control-type medical instrument according to claim 2, wherein the first central hole and the third central hole each have a diameter of 0.lmm-5 mm.
4. The adjustment device of claim 3, wherein the elongated tube is made of metal or polymer.
5. The adjustment device of claim 4, wherein the fixing head is provided with a second thread or a buckle.
6. The device of claim 4, wherein the polymer is a plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395131.9A CN109363809B (en) | 2018-11-21 | 2018-11-21 | Adjusting device of filament control type medical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395131.9A CN109363809B (en) | 2018-11-21 | 2018-11-21 | Adjusting device of filament control type medical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109363809A CN109363809A (en) | 2019-02-22 |
| CN109363809B true CN109363809B (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811395131.9A Active CN109363809B (en) | 2018-11-21 | 2018-11-21 | Adjusting device of filament control type medical instrument |
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| Country | Link |
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| CN (1) | CN109363809B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120109172A1 (en) * | 2008-06-23 | 2012-05-03 | Schmitz Gregory P | Selective tissue removal tool for use in medical applications and methods for making and using |
| CN202314864U (en) * | 2011-11-03 | 2012-07-11 | 中国人民解放军第四军医大学 | Push-pull type guide wire operating device |
| CN202654461U (en) * | 2012-04-28 | 2013-01-09 | 钟慧 | Positioner of peritoneal dialysis catheter |
| CN104968390A (en) * | 2012-12-06 | 2015-10-07 | 印第安维尔斯医疗公司 | Steerable guidewire and method of use |
| CN106580375A (en) * | 2016-12-15 | 2017-04-26 | 杭州启明医疗器械有限公司 | Guide wire regulator and delivery system control handle |
| CN108837280A (en) * | 2017-04-25 | 2018-11-20 | 韦伯斯特生物官能(以色列)有限公司 | Seal wire executor |
-
2018
- 2018-11-21 CN CN201811395131.9A patent/CN109363809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120109172A1 (en) * | 2008-06-23 | 2012-05-03 | Schmitz Gregory P | Selective tissue removal tool for use in medical applications and methods for making and using |
| CN202314864U (en) * | 2011-11-03 | 2012-07-11 | 中国人民解放军第四军医大学 | Push-pull type guide wire operating device |
| CN202654461U (en) * | 2012-04-28 | 2013-01-09 | 钟慧 | Positioner of peritoneal dialysis catheter |
| CN104968390A (en) * | 2012-12-06 | 2015-10-07 | 印第安维尔斯医疗公司 | Steerable guidewire and method of use |
| CN106580375A (en) * | 2016-12-15 | 2017-04-26 | 杭州启明医疗器械有限公司 | Guide wire regulator and delivery system control handle |
| CN108837280A (en) * | 2017-04-25 | 2018-11-20 | 韦伯斯特生物官能(以色列)有限公司 | Seal wire executor |
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| Publication number | Publication date |
|---|---|
| CN109363809A (en) | 2019-02-22 |
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