CN109106425B - Forceps for taking out articles from blood vessel - Google Patents
Forceps for taking out articles from blood vessel Download PDFInfo
- Publication number
- CN109106425B CN109106425B CN201811079166.1A CN201811079166A CN109106425B CN 109106425 B CN109106425 B CN 109106425B CN 201811079166 A CN201811079166 A CN 201811079166A CN 109106425 B CN109106425 B CN 109106425B
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- rod
- handle
- catheter
- forceps
- bending part
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
- A61B2017/2943—Toothed members, e.g. rack and pinion
Abstract
The invention relates to the technical field of machinery, in particular to an intravascular object taking clamp which comprises a catheter, wherein one end of the catheter is connected with a control rod, a first handle and a second handle are sequentially arranged on the control rod, one end of the catheter, which is far away from the control rod, is provided with an adjustable bending part, one end of the adjustable bending part, which is far away from the catheter, is provided with a serrated forceps, the middle surface of the catheter is provided with a first wire guide hole, the surface of the adjustable bending part is provided with a second wire guide hole, the interior of the adjustable bending part is provided with a telescopic rod, the inner wall of the adjustable bending part is provided with a slide rail, and the surface of the slide rail is provided with a plurality of fixing nails.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to an intravascular object taking clamp.
Background
At present, the following problems often occur in the coronary intervention operation process, and the defects are quite numerous in the solution process: 1. and (3) guide wire breakage: a. if the PTCA guide wire is broken in the coronary artery, the PTCA guide wire is tightly attached to the vascular intima after the common coronary stent is released, and the defects are that: increase the surgical costs for the patient, increase the risk of thrombosis and vessel occlusion within the stent; b. if the PTCA guide wire is broken in the aorta or subclavian artery or radial and brachial arteries, the guide wire needs to be caught and supplemented by a heart basket guide wire or an En snare catcher and then taken out, and the defects are as follows: the operation cost of a patient is increased, the difficulty of capturing the PTCA guide wire is high, and the PTCA guide wire needs to be taken out through a surgical operation if the PTCA guide wire fails;
2. unloading the bracket: once the stent is unloaded, the stent needs to be taken out after being grabbed and supplemented by a heart-first basket guide wire or an En snare catcher, and the defects are that: the operation cost of a patient is increased, thrombus is easily formed by the unloaded stent, the difficulty of capturing the stent is high, and the stent needs to be taken out through a surgical operation if the stent fails;
3. unloading or taking out the position of the embolic coil undesirably: need to take out after the heart basket seal wire or the En snare catcher catches the compensation with the hitch ring, the shortcoming: the operation cost of a patient is increased, the catching difficulty is higher, and the embolism spring ring is easy to form thrombus quickly;
4. the catheter can not be folded and withdrawn: another blood vessel needs to be punctured, the catheter needs to be caught and supplemented from the catheter head end by a heart basket guide wire or an En snare catcher, and then the catheter needs to be pulled and matched with the rotation of the catheter tail end to break the catheter, so that the defect that: the pain and the operation cost of a patient are increased, thrombus is easily formed, the difficulty of capturing the catheter is high, the supporting force provided after capturing is limited, and the catheter needs to be taken out through a surgical operation if the catheter fails.
In view of this, we propose an endovascular forceps.
Disclosure of Invention
The invention aims to provide a pair of endovascular fetching forceps to solve the problems of guide wire fracture or slippage, stent unloading, embolic coil unloading or undesirable position needing to be taken out, catheter folding and withdrawing, difficult capture of the catheter and the guide wire under the three-dimensional condition in a heart cavity and the like in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intravascular object taking clamp comprises a catheter, wherein one end of the catheter is connected with a control rod, a first handle and a second handle are sequentially arranged on the control rod, one end, far away from the control rod, of the second handle is tightly bonded with a handle, one end, far away from the control rod, of the catheter is provided with an adjustable bending part, one end, far away from the catheter, of the adjustable bending part is provided with a serrated clamp, the surface of the middle of the catheter is provided with a first wire guide hole, and the surface of the adjustable bending part is provided with a second wire guide hole;
the surface of the serrated clamp is provided with meshing teeth, a telescopic rod is arranged inside the adjustable bending part, the inner wall of the adjustable bending part is provided with a sliding rail, the surface of the sliding rail is provided with a plurality of fixing nails, the sliding rail is connected with the telescopic rod in a sliding manner, and a sliding groove connected with the fixing nails in a sliding manner is formed in the position, close to the fixing nails, of the telescopic rod;
the first handle comprises an outer shell, an inner disc is arranged in the outer shell, a plurality of first saw teeth are arranged on the inner surface of the outer shell, a plurality of second saw teeth are arranged on the outer surface of the inner disc, gears are arranged on the upper side and the lower side between the inner part of the outer shell and the outer wall of the inner disc, and a threaded hole is formed in the middle surface of the inner disc;
the inside of control lever is provided with the dwang, dwang and control lever sliding connection, the dwang is through first screw thread and first handle threaded connection, the structure of second handle is the same with first handle, the one end of control lever is through second screw thread and second handle threaded connection.
Preferably, both sides of the gear are engaged with the first saw teeth and the second saw teeth, respectively.
Preferably, the control rod has a hollow structure inside.
Preferably, the conduit is a hollow tubular structure.
Preferably, one end of the rotating rod penetrates into the interior of the catheter.
Preferably, one end of the adjustable bending part close to the guide pipe is provided with a guide rod.
Preferably, a torsion spring is closely bonded to the upper surface of one end, close to the guide rod, of the telescopic rod, the other end of the torsion spring is closely bonded to the guide rod, and the lower surface of one end, close to the guide rod, of the telescopic rod is rotatably connected with the guide rod through a hinge.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure and convenient use, can adjust the extension and the caliber of the serrated forceps by the fixing nail and the sliding track, and conveniently and quickly clamp the guide wire, the unloading bracket, the spring ring and other apparatus articles in the blood vessel and the heart cavity; the first handle can control the stretching of the serrated clamp, and the second handle can enable the serrated clamp to change the angle, so that the serrated clamp can be conveniently grabbed; the first guide wire hole and the second guide wire hole can penetrate into the PTCA guide wire, so that the intravascular object taking clamp can smoothly enter and exit the blood vessel to a target position along the PTCA guide wire, and the damage of the intravascular object taking clamp to the blood vessel wall is reduced. The invention has great use value and is convenient for popularization.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of an adjustable bending portion according to the present invention;
FIG. 3 is an internal structural view of the first handle of the present invention;
FIG. 4 is a schematic view of the construction of the control lever, first handle and second handle of the present invention;
FIG. 5 is a schematic view of the combination of the control lever, the first handle and the second handle of the present invention;
fig. 6 is a second schematic structural view of the adjustable bending portion of the present invention.
In the figure: 1. a conduit; 11. a first wire guide hole; 12. rotating the rod; 121. a first thread; 2. a control lever; 21. a second thread; 3. a first handle; 31. a housing; 311. a first saw tooth; 32. an inner disc; 321. a second saw tooth; 322. an internally threaded bore; 33. a gear; 4. a second handle; 5. a handle; 6. an adjustable bending portion; 61. a serrated clamp; 611. engaging teeth; 62. a second wire guide hole; 63. a telescopic rod; 631. a slide rail; 632. fixing nails; 64. a guide bar; 641. a torsion spring.
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.
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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example 1
The utility model provides an endovascular fetching forceps, as shown in fig. 1, including pipe 1, pipe 1 is the hollow tubular structure, the one end of pipe 1 is connected with control lever 2, the inside of control lever 2 is hollow structure, first handle 3 and second handle 4 have set gradually on the control lever 2, the one end that control lever 2 was kept away from to second handle 4 closely bonds has handle 5, the one end that control lever 2 was kept away from to pipe 1 is provided with adjustable curved part 6, the one end that pipe 1 was kept away from to adjustable curved part 6 is provided with sawtooth forceps 61, first guide wire hole 11 has been seted up on the middle part surface of pipe 1, second guide wire hole 62 has been seted up on the surface of adjustable curved part 6.
In this embodiment, the surfaces of the catheter 1 and the serrated forceps 61 are coated with a polyurethane resin coating, and the hydrophilic polymer is coated on the surfaces of the catheter 1 and the serrated forceps 61, so that the polyurethane resin coating has the superior performances of low film forming temperature, strong adhesion, good abrasion resistance, high hardness, good chemical resistance and good weather resistance, and can effectively prevent the catheter 1 and the serrated forceps 61 from damaging the vessel wall when entering and exiting the blood vessel.
As shown in fig. 2, the surface of the serrated forceps 61 is provided with engaging teeth 611, the inside of the adjustable bending portion 6 is provided with an expansion link 63, the inner wall of the adjustable bending portion 6 is provided with a slide rail 631, the surface of the slide rail 631 is provided with a plurality of fixing nails 632, the slide rail 631 is slidably connected with the expansion link 63, and a sliding slot slidably connected with the fixing nails 632 is formed at a position of the expansion link 63 close to the fixing nails 632.
As shown in fig. 3, the first handle 3 includes a housing 31, an inner disc 32 is disposed inside the housing 31, a plurality of first saw teeth 311 are disposed on an inner surface of the housing 31, a plurality of second saw teeth 321 are disposed on an outer surface of the inner disc 32, gears 33 are disposed on upper and lower sides between the inside of the housing 31 and an outer wall of the inner disc 32, two sides of each gear 33 are respectively engaged with the first saw teeth 311 and the second saw teeth 321, and a threaded hole 322 is formed in a middle surface of the inner disc 32.
As shown in fig. 4 and 5, a rotating rod 12 is disposed inside the control rod 2, one end of the rotating rod 12 penetrates into the catheter 1 and is connected with the telescopic rod 63, the rotating rod 12 is slidably connected with the control rod 2, the rotating rod 12 is in threaded connection with the first handle 3 through a first thread 121, the second handle 4 has the same structure as the first handle 3, and one end of the control rod 2 is in threaded connection with the second handle 4 through a second thread 21.
In addition, the rotating rod 12 is made of elastic rubber, and can have good bending performance.
In this embodiment, when the first handle 3 is rotated, the gear 33 can be driven to rotate, so that the inner disc 32 rotates, the internal thread hole on the inner disc 32 rotates, the rotating rod 12 can move forward through the threads, and the rotating rod 12 can be controlled to stretch and retract inside the catheter 1, so that the serrated clamp 61 is ejected out of the catheter 1, and the serrated clamp 61 is clamped; can rotate the control lever 2 through rotating second handle 4 to make sawtooth forceps 61 rotate, thereby make sawtooth forceps 61 change angle position, penetrate the seal wire from first seal wire hole 11, wear out from second seal wire hole 62, make operating personnel can conveniently carry out sawtooth forceps 61's business turn over, can avoid pipe 1 to bend simultaneously and cause the damage.
Example 2
When the adjustable bending part is used specifically, the rotation angle of the serrated forceps 61 is small, the movement is not flexible enough, and the use is inconvenient, so that the adjustable bending part 6 is improved on the basis of embodiment 1, as shown in fig. 6, a guide rod 64 is arranged at one end of the adjustable bending part 6 close to the guide pipe 1, a torsion spring 641 is closely adhered to the upper surface of one end of the telescopic rod 63 close to the guide rod 64, the other end of the torsion spring 641 is closely adhered to the guide rod 64, and the lower surface of one end of the telescopic rod 63 close to the guide rod 64 is rotationally connected with the guide rod 64 through a hinge.
In this embodiment, the connection between the guide rod 64 and the telescopic rod 63 enables the serrated clamp 61 to be turned over by the hinge when extending out, and the range of turning over can be controlled by the torsion spring 641, so that the serrated clamp can move freely to clamp in a larger range, and is convenient for an operator to use flexibly.
The working principle of the invention is as follows: when the device is used, the length of the serrated forceps 61 entering and exiting the catheter 1 can be controlled by rotating the first handle 3, the gear 33 rotates with the first handle 3 when the first handle 3 rotates, the serrated forceps 61 slowly extends out from the catheter 1 along the fixed nail 632 and the sliding rail 631, the jaw is gradually enlarged, the first handle 3 is rotated in the opposite direction, the jaw is slowly closed, the serrated forceps 61 slowly retracts from the catheter 1 along the fixed nail 632 and the sliding rail 631, and the maximum extension length of the serrated forceps 61 is 1 cm.
The angle of the adjustable bent part 6 at the front end of the catheter 1 and the catheter 1 can be controlled by over-rotating the second handle 4, and when the second handle 4 is rotated, the gear 33 rotates along with the second handle, so that the angle of the serrated forceps 61 is changed, after the adjustable bent part 6 forms a certain angle, the biting force of the forceps jaws is stronger through the change of the angle, the caught objects are not easy to fall off, the device can be also suitable for catching the hydrophilic guide wire of the heart-first interventional operation, and the establishment of the artery and vein tracks is convenient.
The PTCA guide wire can enter and exit along the two holes, the endovascular fetching clamp can be implanted into a guide catheter (or an angiography catheter) along the PCTA guide wire and then is sent to a required operation part, the extending length of the serrated clamp 61 and the size and the angle of the jaw are adjusted by rotating the first handle 3 and the second handle 4, after the serrated clamp 61 is retracted into the catheter 1 after clamping an article to be fetched, the endovascular fetching clamp is combined with the endovascular fetching clamp to withdraw from the guide catheter (or the angiography catheter).
Wherein the length of the catheter of the intravascular fetching clamp is 1.3m, the outer diameter is 2.0mm, and the outer diameter of the head end of the catheter, which is 10cm, is 1.5 mm; before the brand-new intravascular forceps is not used, the serrated forceps 61 is furthest separated from the catheter 1, the forceps jaws are opened maximally, the angle between the adjustable bending part 6 and the catheter 1 is 45 degrees, before the forceps are used, the first handle 3 and the second handle 4 are rotated anticlockwise, the serrated forceps 61 is retracted into the catheter 1, and the angle is adjusted to 0 degree.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An endovascular forceps comprising a catheter (1), characterized in that: one end of the guide pipe (1) is connected with a control rod (2), a first handle (3) and a second handle (4) are sequentially arranged on the control rod (2), one end, far away from the control rod (2), of the second handle (4) is tightly bonded with a handle (5), one end, far away from the control rod (2), of the guide pipe (1) is provided with an adjustable bending part (6), one end, far away from the guide pipe (1), of the adjustable bending part (6) is provided with a serrated clamp (61), a first guide wire hole (11) is formed in the surface of the middle of the guide pipe (1), and a second guide wire hole (62) is formed in the surface of the adjustable bending part (6);
the surface of the sawtooth forceps (61) is provided with meshing teeth (611), an expansion rod (63) is arranged inside the adjustable bending part (6), the inner wall of the adjustable bending part (6) is provided with a sliding rail (631), the surface of the sliding rail (631) is provided with a plurality of fixing nails (632), the sliding rail (631) is in sliding connection with the expansion rod (63), and a sliding groove in sliding connection with the fixing nails (632) is formed in the position, close to the fixing nails (632), of the expansion rod (63);
the first handle (3) comprises an outer shell (31), an inner disc (32) is arranged inside the outer shell (31), a plurality of first saw teeth (311) are arranged on the inner surface of the outer shell (31), a plurality of second saw teeth (321) are arranged on the outer surface of the inner disc (32), gears (33) are arranged on the upper side and the lower side between the inside of the outer shell (31) and the outer wall of the inner disc (32), and a threaded hole (322) is formed in the middle surface of the inner disc (32);
a rotating rod (12) is arranged in the control rod (2), the rotating rod (12) is in sliding connection with the control rod (2), the rotating rod (12) is in threaded connection with the first handle (3) through a first thread (121), the second handle (4) is identical in structure to the first handle (3), and one end of the control rod (2) is in threaded connection with the second handle (4) through a second thread (21); two sides of the gear (33) are respectively meshed with the first saw teeth (311) and the second saw teeth (321); the control rod (2) is of a hollow structure.
2. The endovascular forceps of claim 1, wherein: the catheter (1) is of a hollow tubular structure.
3. The endovascular forceps of claim 1, wherein: one end of the rotating rod (12) penetrates into the catheter (1).
4. The endovascular forceps of claim 1, wherein: one end of the adjustable bending part (6) close to the guide pipe (1) is provided with a guide rod (64).
5. The endovascular forceps of claim 4, wherein: the upper surface of one end, close to the guide rod (64), of the telescopic rod (63) is closely adhered with a torsion spring (641), the other end of the torsion spring (641) is closely adhered with the guide rod (64), and the lower surface of one end, close to the guide rod (64), of the telescopic rod (63) is rotatably connected with the guide rod (64) through a hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079166.1A CN109106425B (en) | 2018-09-17 | 2018-09-17 | Forceps for taking out articles from blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811079166.1A CN109106425B (en) | 2018-09-17 | 2018-09-17 | Forceps for taking out articles from blood vessel |
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| Publication Number | Publication Date |
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| CN109106425A CN109106425A (en) | 2019-01-01 |
| CN109106425B true CN109106425B (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811079166.1A Active CN109106425B (en) | 2018-09-17 | 2018-09-17 | Forceps for taking out articles from blood vessel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112754547B (en) * | 2021-01-18 | 2022-03-25 | 中南大学湘雅医院 | Multi-degree-of-freedom laparoscopic surgical instrument |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986825A (en) * | 1988-10-11 | 1991-01-22 | Concept, Inc. | Surgical cutting instrument |
| ES2443015T3 (en) * | 1995-06-07 | 2014-02-17 | Sri International | Surgical manipulator for a telerobotic system |
| US7331968B2 (en) * | 2004-06-14 | 2008-02-19 | Ethicon Endo-Surgery, Inc. | Endoscopic clip applier with threaded clip |
| WO2008045333A2 (en) * | 2006-10-05 | 2008-04-17 | Tyco Healthcare Group Lp | Flexible endoscopic stitching devices |
| CN101317777B (en) * | 2007-06-05 | 2012-01-04 | 伊西康内外科公司 | Medical instrument with needle and knife |
| AU2010249437B2 (en) * | 2009-05-22 | 2015-01-22 | Slatr Surgical Holdings Llc | Endoscopic instrument |
| HU229773B1 (en) * | 2009-09-02 | 2014-06-30 | A tool for surgical intervention | |
| US8968359B2 (en) * | 2010-05-04 | 2015-03-03 | Covidien Lp | Surgical forceps |
| CN103027830B (en) * | 2011-09-29 | 2014-09-24 | 厦门兴翔天电子有限公司 | Displacement massager |
| CN104523309B (en) * | 2015-01-23 | 2017-01-18 | 哈尔滨工业大学 | Intraperitoneal traction surgical robot for minimally invasive surgery |
| TW201709866A (en) * | 2015-09-11 | 2017-03-16 | 合新生物科技股份有限公司 | Steerable endoscopic instrument |
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